2

Plate Heat Exchanger
Operation and Maintenance Manual

Thank you for purchasing a Hisaka Plate Heat Exchanger.
 Manuals for the HISAKA Plate Heat Exchanger consist of the following seven related documents.
1. Installation Manual, 2. Operation and Maintenance Manual, 3. Gasketting Manual (Total 10 Models), 4. Plate
Cleaning Manual, 5. "Slit-In" Type Gasketting Manual, 6. Mixed Gasket Materials Manual, and 7. Strainer
Maintenance Manual.
These documents are available at our website (https://www.hisaka.co.jp/english/).
 Drawings (Plate Arrangement Drawing and Assembly Drawing) of supplied model are to be supplied with theequipment.
 Use as directed in these Manuals for safe and proper operation and maintenance.
 Keep these Manuals in hand.
 All description details, including appearance and specifications, presented in this manual are subject to change for
improvement without prior notice. For the latest information, please refer to our website, if necessary.

Introduction<Plate Heat Exchanger>

Plate Heat Exchanger (hereinafter “PHE”) performs heat exchanging by transferring heat between hot and cold fluids flowing
alternately through heat transfer plates, which are thin metal sheets having fine corrugated patterns.

<Use of Equipment>

To prevent injury to persons, do not use the equipment for anything other than its intended purpose and specification. Also,
installation and maintenance shall be carried out according to these Manuals.

<Trained Operators>Operation, maintenance/inspection, or installation of the equipment shall be performed by personnel/operators who haveundergone training regarding safety and danger prevention drills.

Work in high places shall be performed by personnel/operators who have undergone training regarding safety and danger
prevention drills.

<Export Regulations on the Equipment>

According to the Export Control released by Japanese Government (METI), export of the equipment may be subject to export
regulation under the Foreign Exchange and Foreign Trade Act. In case of exporting the equipment or component parts ofequipment from Japan, reselling, relocating or re-exporting from an original installation site out of Japan, please comply withthe relevant local regulations.

<Disposal of the Equipment>At the end of use, the equipment shall be disposed or recycled according to relevant, local regulations. Besides theequipment itself, any hazardous residues from the process liquid must be considered and dealt with in a proper manner.

<Use of this Installation Manual>

Read this manual thoroughly and understand the precautions regarding the safety of the equipment and its functions before
handling the equipment.

This manual is created for a person who fully understands the language it is written in. If a person, who is not able tounderstand the language written herein, will handle the equipment, please provide safety instructions to thepersonnel/operators.

PHE supplied may differ from the drawings and pictures in these Manuals depending on the optional parts if any. Also, forthe purpose of explanation, the drawings and pictures in these Manuals may omit the details, accessories, or the like.



Changing the contents of these Manuals, in part or in whole, or using them for anything other than its intended purpose isprohibited.

<Disclaimer>

HISAKA accepts no liability for any failures in the function or performance of the equipment caused by use of any other thangenuine parts.



HISAKA accepts no liability for any injuries or damage borne by the user, caused by use of any other than genuine parts..

HISAKA Plate Heat Exchanger
Operation and Maintenance Manual
Table of Contents
1

Safety Precautions

P1, 2

2

Names of Components

P3

3

Components Details

P4

4

NameplateP5

5

Accessories

P5

6

Consumables

P5

7

Model Description

P5

8

Tests Before Commissioning Operation

P6

9

Operation

P7

10

Shutdown

P7

11Long-term Storage/Preservation

P8

12

MaintenanceP8 to 15

13

Troubleshooting

P15, 16

14

Plate Arrangement Drawing

P18

15

Assembly Drawing

P19

16

Exploded View

P20 to 23

17

Inquiries

P24, 25

1

Safety Precautions
Read through this manual carefully before use, and use PHE properly.
If you have any questions, please inquire with our company.

Precautions are categorized using the following symbols.

WARNING

This symbol indicates content where mishandling could result in death or severe injury.

CAUTION

This symbol indicates content where mishandling could result in injury or property damage.

NOTEThis symbol indicates important matters and/or useful information.

Meanings of Symbols
Indicates items that are "prohibited (something that you must

Indicates items that are "mandatory (something that you must

NOT do)".

do)".

WARNINGDo NOT use a piping gasket to the rubber covering nozzle of PHE.

Keep fire-fighting equipment when handling flammable media.

Sealing performance could be decreased and it could be a cause of

If the flammable media ignites during operation or maintenance, it canleaking. In case of metal covering nozzle, piping gasket is required.

lead to a major accident.

In general, do NOT perform pneumatic test for medium and large

Install a protective cover on PHE when handling dangerous media,

size PHE.

which is high temperature, high pressure, strong acid, or a strong

For small size PHE, do not perform pneumatic test at thesame pressure as hydrostatic test pressure.

alkaline.

When compressed air or nitrogen for pneumatic test is leaked, it is very

If a dangerous media leaks and is splashed, it may lead to a serious

dangerous since there would be an impact caused by volume expansion

accident.

in addition to such test pressure.
In general, do NOT perform pneumatic test in excess of 0.75 MPaG.
Do NOT loosen the thermometer, pressure gauge, tightening bolts

Make sure that the operation is stopped, the internal pressure is "0",and nuts, and/or any other accessories during operation and/or PHE

and the fluid temperature has sufficiently dropped before

pressurized.

disassembling the PHE

It may cause burns or injury if fluid is blown out from PHE/pipes.

If fluid splashes from the PHE during disassembly, it may cause burns orlacerations.

Do NOT use damaged tightening bolts, such as improper rust or

When removing gasket, carry out in proper location with good

cracks.

ventilation.

When the tightening bolts breaks during operation or disassembly, it is

The gasket should be adhered with Hisaka’s “S-1" contain an organic

dangerous not only broken pieces are scattered, but also fluid may splash

solvent. Breathing the volatile ingredients for a long time may causefrom PHE.

symptoms such as headache, dizziness, and nausea. If these symptoms

Do NOT use tightening bolts with loosed bolt head.

occur, remove person to fresh air. If signs/symptoms develop, get

If the swaged bolt head loosens and comes off the bolt, it could burst at

medical attention.

high speed. It may cause a serious accident for any person or property.

Wear protective equipment such as protective goggles, a mask,

Do NOT incinerate the gasket.
Incinerating gaskets releases a toxic gas and is very dangerous.
Any unnecessary gaskets should be disposed as industrial waste inaccordance with international, national, prefectural, and municipal
regulations.
Also, gaskets should be disposed under the local jurisdiction.
Do NOT use PHE for lethal service.

rubber gloves, and protective clothing if handling a dangerous fluid
such as a strong acid or strong alkaline.
Eye Contact: Flush eyes with large amounts of water. If signs/symptoms
persist, get medical attention.
Skin Contact: Remove contaminated clothing and shoes. Immediately
flush skin with large amounts of water. Get medical
attention. Wash contaminated clothing and clean shoes before reuse.
Inhalation: Remove person to fresh air. If signs/symptoms develop, getmedical attention.

Do NOT handle the heat transfer plates in any place with strong
wind.
Under strong wind, the heat transfer plates it could fly, cut, injury, andbruise.

P1

If Swallowed: Do not induce vomiting unless instructed to do so by
medical personnel. Give victim two glasses of water. Nevergive anything by mouth to an unconscious person. Get medical attention.

CAUTIONDo NOT touch the side of plate pack and heat transfer plate edge.

Do not operation under the abnormal vibration (resonance).

The edge of a heat transfer plate is very sharp and may cut you.

When abnormal vibration (resonance) or abnormal sound occurs during

Be sure to wear cut-resistant gloves whenever touching heat transfer

the operation, stop operation immediately and recheck the installation orplate.

operation condition.
It may cause of breakage.

Do NOT place objects on plate pack.

Do NOT freeze.

It may cause deformation of heat transfer plate.

If freezing occurs in PHE, the heat transfer plates may be damaged.

Falling object may cause injury during operation.

Drain out completely to avoid freezing in case of preservation in cold
areas. In warm areas, if storing the equipment for a long time, store it withliquid at full capacity.

Do NOT make heat transfer plate edge deform by contacting withDo NOT apply any treatment to the fluid that could cause corrosion.

surrounding object.

It may cause corrosion or damage to heat transfer plates and wetted

Deformation of the heat transfer plate may cause damage on plate gasket

parts.

and result in leakage.

Perform treatment suitable for the material of the heat transfer plate andwetted parts.

Do NOT shorten guide bar by cutting.

In case of inner strainer is inserted PHE, remove it at the time of theIt makes disassembling of the PHE impossible.

back wash.
It may cause damage on the inner strainer.

In general, do NOT remove stud bolt of connection.

If using a pump with specifications in excess of the PHE's design

It may cause damage on the threads.

pressure, install a safety device on the pump's delivery side or theStud bolt is to be removed very carefully not to make any damage on the

PHE's inlet or outlet.

threads of both stud bolt and its hole at your own risk, only when it isEven if not required by applicable code and regulation, a safety device isabsolutely necessary.

necessary to protect the equipment.

Do NOT weld or attach any piping support onto the frame, guide bar,

Secure working space around PHE.

and/or guide bar support.

Adequate piping design is required, taking into account the working

Welding causes thermal damage on plate gaskets and attached parts

space for disassembly and tightening device.

may interrupt handling when disassembling.
Do NOT enter debris or foreign materials into PHE.

Perform maintenance of PHE that handle dangerous fluids, such as

Install a strainer on upstream to prevent clogging in PHE.

a strong acid or strong alkaline, in an environment that has drain

When flushing pipes for commissioning operation, install a temporary

water treatment equipment.

strainer or provide bypass on upstream PHE in order to prevent debris or

Waste media in accordance with laws, codes and regulations. Be careful

foreign materials into PHE.

not to drain liquid into a river or ocean area.
If untreated liquid leaks, take measures in accordance with the "Safety
Data Sheet (SDS)" for the treatment liquid you used.

Do NOT start and stop the pump frequently (in a short time).

Remove the smell of gaskets and/or adhesive by hot water cleaning

During commissioning, pay attention to time duration of pump start/stop,

inner of PHE in order to prevent the fluid from absorbing theseor there would be leakage due to difficulty of gasket restoration caused

smells.

by temperature and pressure variation. After stopping, min. 3 minutes is

Fluid may absorb the smell of plate gaskets and/or adhesive when PHE

recommended to restart.

is newly installed or plate gaskets are replaced.

Open and close the valve slowly so as not to create a sudden pressure

To avoid above, clean the inner of PHE using hot water and remove thefluctuation.

smell.

Do NOT operate in excess of the design conditions (fluid,
temperature, flow rate, pressure, tightening length, etc.).
It may cause deformation of the heat transfer plates or leakage. Also, therequired performance may not be achieved.
Do NOT apply impact pressure and instantaneous pressure
fluctuation.
Do not apply impact pressure and instantaneous pressure fluctuation to
PHE, such as from starting-up of pump, sudden close of valve, or bysteam hammer occurred. Deformation, cracks, or leaks in the heattransfer plates are possible if long time repeated pressure pulsation
within few seconds
Do NOT apply instantaneous negative pressure.
Drawdown may occur if instantaneous negative pressure is applied to thePHE by pump stop or valve closing, or heat transfer plates deformation
may also.

P2

2

Names of Components
PHE consists of the following parts.
[NOTE]


Refer to the "Plate Arrangement Drawing" for equipment specifications.

Upper guide bar
Tightening bolts and nuts
E-FrameUpper guide bar
E-Frame

S-Frame

S-FrameStud bolt and nut

Stud bolt and nut

S-nozzle
S-nozzle

S-nozzle

S-nozzle
Tightening bolts
and nuts

Name plate
Name plate
Lower guide bar
S-nozzle

Frame support

S-nozzle

Heat transfer plates
S-nozzle
Guide bar support

S-nozzle

Lower guide bar
Heat transfer plates

Fig. 2-1 J Type Heat Exchanger

Fig. 2-2 P Type Heat Exchanger

Upper guide bar
E-nozzle
E-FrameC-nozzle
Guide bar support
L-Frame
S-FrameTightening bolts and nuts
S-nozzle
S-nozzle<SectionⅠ><SectionⅣ>●●<SectionⅢ>●

Nameplate<SectionⅡ>

S-nozzle●

Lower guide bar
E-nozzle

S-nozzle

C-FrameC-nozzle
Heat transfer plates

Fig. 2-3 BP2CL Type Heat Exchanger
P3

3

Components Details

3-1

Heat Transfer Plate

A-Plate

B-Plate

E-Plate (Last heat transfer plate between the S, L, C, and E-Frames)

Channel plates (Heat transfer plates except for the D-Plate and E-Plate between
the S, L, C, and E-Frames)

Flow

D-Plate (First heat transfer plate between the S, L, C, and E-Frames)

Flow



Trapezoidal flow

The heat transfer plates comprise of the following three types.

A-Plates are fliped upside down to be used as B-Plates.



3-2

Stainless steel, Titanium, Titanium alloy, Nickel alloy, and so on

Flow

Flow

We have a lineup of the following materials for heat transfer plates.

Diagonal flow

The opposite is the same.(Excluding some models)Plate Gasket

The plate gaskets comprise of the following four types.


D-Gasket (Installed to the D-Plate port hole)E-Gasket (Installed to the E-Plate port hole)

B-PlategasketA-PlategasketChannel gaskets (Gaskets installed to the front surfaces of heat transfer plates[NOTE]


These are not mounted on some types depending on the heat transfer platemodel and whether the plate is with or without passage holes.

Flow

Distance (String gasket that fills the gasket groove on the D-Plate or E-Plate)

Flow



Trapezoidal flow

other than the D-Plate)"A-Plate channel gaskets" are fliped upside down for Trapezoidal flow or fliped

We have a lineup of the following materials for gaskets.


NBR, EPDM, Silicon, FPM, PTFE encapsulated, and so on

Flow

Flow

The opposite is the same.

Diagonal flow

horizontal and upside down for Diagonal flow to be used as "B-Plate channel gaskets".

"A-", "AG-", or "AN-" in front of the gasket material indicates "Slit-In" type.
3-3

Connection

Following figures are standard products for connection.
Other types of connections are available as you want.

4

N

TN

KN

Fig. 3-1. Rubber covering typeFig. 3-2. Metal covering type
(Bended product)

Fig. 3-3. Metal covering type
(Welded product)

Nameplate
P4

The figure on the right is manufacturer’s standard nameplate installed on a
Hisaka PHE.
When inquiring, notify us of the "MFG. NO." and "MODEL (TYPE)"
described on the nameplate.
TIGHTENING LENGTH Max. on the nameplate may differ from that ofAssembly Drawing. The former is the actual dimension at delivery, while
the later is only the design dimension. When reassembling after replacing
plate gaskets or cleaning, follow the values on the nameplate.
Fig. 4-1. Nameplate (sample)

5

Accessories
Any accessories, like a ratchet spanner, anchor bolt, thermometer, pressure gauge, etc., for HISAKA PHE are to be supplied as
option upon request.

6 Consumables
Not all heat transfer plates are durable parts. Heat transfer plates to be used under corrosive and/or erosive environment

shall be considered as consumables. (Refer to: "12-3-1. Heat Transfer Plate Replacement")
Plate gaskets are consumables. Replace them periodically. (Refer to: "12-3-2. Replacement of Plate Gasket")7Model Description
The model description for HISAKA PHE indicates the following details.
-

RX

1

4

6

A

-

Heat transfer plate model
- UX
- LX
- SX
- RX
Etc.

J

R

-

24

Indicates special
specifications.
- R: Saturated steam
heating- L: With a divider- C: With a channel frame
Etc.

Chevron angle of heat transfer
pattern- 1 to 6: Mono arrangement- 7 to 9: Mixed arrangement
Plate thickness- 5: 0.5mm- 6: 0.6mm- 8: 0.8mm- 0: 1.0mm

Ｂ

H

Indicates the number ofheat transfer plates.

Size of heat transfer plate- 0 (small) to 16 (large)

無
None

TN

Ａ

Plate type
- None: Glued- A: Slit-in (Glueless)- B: Slit-in with gasket glued* Either of the left figures is applicable
except for some models.
- D: Diagonal flow plate (Refer to P4)- S,M,L: Class number

Indicates the frame model.
- J: Exclusive for small size / lessplates- P: Universal except for the above
Indicates the class of the frame's
resistance to pressure- None or E: For low pressure- U: For high pressure- H: For middle pressure- S: For ultra-high pressure
Etc.
Connection- None: Projected nozzle with flange, ferrule,etc.
- N: Rubber covering- TN: Bended metal covering- KN: Welded metal covering
Stainless steel covers- B: Exclusive for food machinery use

P5

8

Tests Before Commissioning Operation
After installation, commissioning operation of the PHE is to follow the conditions below.

8-1

System Test, Piping Test, Equipment Test

Check the following nine items.
If all of the items are not satisfied, do not operate the equipment and inform your supervisor or safety manager.


Install safety apparatus compliant with various standards or regulations to the PHE installed line.

Confirm that the nozzle orientation in the "Plate Arrangement Drawing" and "Assembly Drawing".

Provide venting on both side of the PHE to facilitate the removal of air from the system.



Do not apply valve and piping loads to the nozzles. Use pipe supports not to load on the S-, C-, and E-Frames.
However, support structures are not installed in the maintenance space, or a removable support structure is used.



Ensure that flushing is completed in order to prevent welding spatter, debris and/or foreign materials into PHE.
Confirm that the tightening length is correct.
Tightening length on the Assembly Drawing may differ from actual length. Refer the tightening length in the nameplate which
describes the actual dimension at the delivery and after maintenance.

Confirm that all nuts for tightening bolt are not loose. Confirm that all nuts for S-,E-nozzle are not loose.
Fulfill the fluid for both hot and cold side. Confirm all air is out and liquid will flow out of the vent.

Ensure that start theoperation with fulfilled condition, when non-fulfilled condition of PHE, it may result the following;



8-2

-

pump overload-

heat transfer plates may be deformed and cracked, leaked due to impact pressure

There is no leak between the heat transfer plates, piping connections, or other locations.
Pressure/Leak Test for PHE and System Pressure Test

PHE has been performed pressure-leak test before delivery. In case of retest at site, follow below instructions.
Also, in case of pressure /leak test for whole system including up/down stream equipment, follow below instructions.
In case of hydrostatic testPressurize hot and cold side independently and/or both sides at the same time. Actual test pressure shall not exceed thespecified test pressure. Over test pressure could result in heat transfer plate/frame deformation and/or leaking. The test
pressure is referred to Plate Arrangement Drawing.
In case of pneumatic testPressurize hot and cold side independently and/or both sides at the same time. Keep distance from PHE during the test.
When compressed air or nitrogen for pneumatic test is leaked, it is very dangerous since there would be an impact caused
by volume expansion in addition to such test pressure. The test pressure is referred to Plate Arrangement Drawing.
8-3

Initial Flushing for Piping

Initial flushing for piping shall be performed after piping before operation in order to prevent welding slag and/or leavings, suchas tool or dust cloth, come into PHE chamber. Generally, the methods of flushing are;
- Removing PHE from the piping- Applying the temporary strainer for the upstream piping
In case of removing PHE from the piping, do not remove studded bolt on PHE frame. In case of applying temporary straighter,refer to “1 Installation Manual, Table 8-1 Recommended strainer hole size” and select the adequate strainer hole size. Apply thestrainer with external reinforcement such as punching metal because screen without reinforcement can be damaged easily.

P6

9

Operation
The procedure for start-up depends on your use. Reconfirm your use and follow its procedure.


General Starting Operation (No burnt or No frozen fluid)- Fullfill PHE chamber with media after all air isexpelled for both sides.

- Flow heating side
media.

 Starting operation in case of possibility of burn by using hot water- Fullfill PHE chamber with media after all air is- Flow heated side
expelled for both sides.
media.

- Flow heated side media.

- Flow heating side media.

 Starting operation in case of possibility of burn by using saturation vapor.
- Fullfill PHE chamber with media after all air is- Flow heated side
expelled for heated sides.
media.
- Drain media from heating side.

- Flow heating side media.

 Starting operation in case of freezing by using chilled water- Fullfill PHE chamber with media after all air is- Flow cooled side
expelled for both sides.
media.

- Flow cooling side media.

[CAUTION]: Do NOT apply impact pressure and operation under the abnormal vibration (resonance).
 Do not apply impact pressure to PHE, such as from starting-up of pump, sudden close of valve, or by steam
hammer occurred. Deformation, cracks, or leaks in the heat transfer plates are possible if long time repeatedpressure pulsation within few seconds.
 When abnormal vibration (resonance) or abnormal sound occurs during the operation, stop operation immediately
and recheck the installation or operation condition. It may cause of breakage.

10

Shutdown

The procedure for shutdown depends on your use. Reconfirm your use and follow its procedure.
 General shutting down (No burnt or No frozen fluid)- Shut off heated side
- Shut off heating side media.
media.

- Hold until next start-up.

Shutting down in case of possibility of burn by using hot water- Shut off heated side media after- Shut off heating
being less than burning
side media.
temperature of the media.

- Hold until next start-up.

 Shutting down in case of possibility of burn by using saturation vapor.
- Shut off heating- Shut off heated side media.
side media.

- Discharge drain steam completely after
shutting down.

[CAUTION]: Check the NO steam leaking.
 Surely check that NO steam is leaking after shutdown of PHE.
Steam might leaks slightly, even if steam valve may seem to be firmly closed.


Shutting down in case of freezing by using chilled water- Shut off coolingside media.

- Shut off cooled side
media.

- Control the system to prevent freezing at shutting
down.
- Drain at least one medium if there is a risk of freezing
after shutting down.

[CAUTION]: Do NOT operate vacuum pressure to PHE.
 Provide safety device such as vacuum breaker to prevent deformation/cracking/leaking of heat transfer plate.
Media could contract the volume due to temperature decrease of media as a result PHE chamber could work into
vacuum pressure after shutting down of high temperature operation.

P7

11

Long-term Storage/Preservation

If the unit has been used and long-term storage is required, PHE is to be placed in storage as below table. The storage conditions
are depending on your application and the environment.
Environment/Application
Storage Procedure
General use
It must be completely drained and storage with empty condition to avoid failures such asalteration of any remaining liquid, corrosion in heat transfer plates, and damage tocomponents from freezing.
It must be completely fulfilled and storage.
It is recommended to replace the seawater with clean water to prevent decay.
Seawater use
In case of long term storage with empty and dry condition, dried scale on the heat transfer
plates might not be able to cleaned.
Cold area use
It must be completely drained and storage with empty condition If freezing occurs in PHE,
the heat transfer plates may be damaged.
Low temperature media use
Take care following four items when storing a spare gasket long term.


Do not place any items on it to avoid gasket deformation.

Store it in a black plastic bag or cardboard box to avoid ultraviolet exposure.

Store in a cool place avoiding direct sunlight and high temperature, high humidity.



Storage lifetime of new plate gasket is 3 years after the purchase. .

Take care following six items when storing a spare adhesive and double-sided tape long term.
Store in a cool place avoiding direct sunlight and high temperature, high humidity, flammable condition.



In case of food application “F-3”, keep refrigerated once opened (5 – 10℃).



Storage lifetime of new adhesive is 2 years after the purchase in case of general application “S-1” and double-sided tape.

In case of food application “F-3” or silicon adhesive, use before expire date.

In case of food application “F-3”, use within 1 month or before expire date which is earlier once opened.

Mix it well before use because the solvent and solids may separate due to long-term storage.

12

Maintenance

Periodic maintenance is recommended for long life use of PHE.
[NOTE]
The maintenance cycle is depending on your usage conditions. It is recommended to perform maintenance once per
year for brand-new PHE and estimate appropriate maintenance cycle based on the result thereof.

Do not hesitate to contact us for PHE total support, the "MARUGOTO PACK" maintenance.
Our excellent staffs, well-trained, carry out maintenance with their professional skills and techniques.
If the customer carries out maintenance by yourself, the below explanations: "12-1. Disassembly", "12-2. Cleaning", "12-3.
Maintenance", "12-4. Inspection", "12-5. Assembly", and "12-6. Leakage Detection" to be followed.
12-1

Disassembly

Disassembly preparation(1)

Record the tightening dimensions before disassembly in case of reusing plate gaskets.
Record of the tightening length is not required when using brand-new plate gaskets.

(2)

Drain out media completely and make sure that no media and pressure is remaining fromthe both chambers.

(3)

For PHE with E-Nozzle and/or C-Nozzle, remove the primary and secondary connectionand ensure to keep maintenance space and moving space for E-Frame, C-Frame, andheat transfer plates.

Maintenance space
Maintenance
space

Maintenance space

P8

(4)

Apply lubricant the tightening bolts after cleaning all tightening bolt threads.

(5)

Prepare the ratchet spanner or the automatic tightening device.

Disassembly work
Remove the tightening bolts and nuts as following steps by using a ratchet spanner or automatic tightening device.
The following procedures shows an example of PHE with 14 tightening bolts and nuts.
(6)

Slowly loosen the tightening bolts in order from 1-2 to 13-14.
[NOTE]


If you have two sets of ratchet spanners and/or automatic tightening device,slowly loosen two tightening bolts that are located diagonal, in order, 1 and
2, 3 and 4, to 11 and 12, 13 and 14,simultaneously.

[CAUTION]Take care not to fall down the tightening bolts during disassembly andassembly the PHE, as it may cause injury.

(7)

After loosing tightening bolts/nuts, where the tightening bolt/nut can easily loose by usingbolts only 3,4,11 and 12, then remove all tightening bolts and nuts except for 3, 4, 11 and
12.
[NOTE]


Generally leave four tightening bolts and nuts, below the upper nozzles andabove the lower nozzles.
(These four tightening bolts generally are longer than the other tightening
bolts.)(8)

Slowly loosen the tightening bolts in order from 3 - 4 - 11 - 12 - 3 and so on.
[NOTE]


If you have two sets of ratchet spanners and/or automatic tightening device,slowly loosen two tightening bolts that are located diagonal, in order, 3 and4, 11 and 12, simultaneously.

(9)

After loosening the 3, 4, 11, 12 tightening bolts, remove them.

(10) Move the E-Frame to the guide bar support.
[NOTE]


If the E-Plate and E-Frame are sticking each other, move back the E-Frameslightly to separate E-Plate and E-Frame, and then move E-Frame to theback end.

P9

12-2
12-2-1

Cleaning
Manual Cleaning

Cleaning preparationPrepare a high-pressure washer or a soft brush, cleaning water, and dust cloths before cleaning the heat transfer plates.
Prepare a work/step platform for large PHE because heat transfer plate can clean with suspending on the upper guide bar.



Cover PHE with protective sheet to prevent the scattering of cleaning water.



Install a dust filter on the drain port to prevent clogging of the port by scale or dirt from heat transfer plates.

Cleaning method
Two method of cleaning the heat transfer plates are available.
Select a cleaning method depending on the PHE's installation condition and the capacity of effluent disposal.


Cleaning by heat transfer plates Removed
Remove the heat transfer plates from the PHE frame to clean. Place or pilethe heat transfer plates and clean both the front and back surfaces using ahigh pressure washer or a soft brush, such as nylon.

Fig. 12-1 Removal cleaning

Cleaning by heat transfer plates Suspended
Clean the heat transfer plates while they are still suspended from the upper
guide bar. Move the heat transfer plates one at a time to the S-Frame or EFrame direction and clean both the front and back surfaces of the heat transfer
plates using a high pressure washer or a soft brush, such as nylon.

Fig. 12-2 Suspended cleaning[CAUTION] Do NOT use the heat transfer plates with a steel brush or steel wool.


If heat transfer plates are damaged by using a steel brush or steel wool, sealing performance could be decreased
and it could cause corrosion. Therefore, use a soft brush, such as nylon, so as not to damage the heat transfer
plates.

[CAUTION] Do NOT have the nozzle of the high pressure washer close to the PHE components.
High pressure water may peel the frame's coating or damage the heat transfer plate and plate gasket surfaces.
Therefore, keep the nozzle of the high pressure washer at least 100 mm away from the object being cleaned.

[CAUTION] Precaution for using a high pressure washerDischarge pressure is 1 to 15 MPaG for the cleaning. Use water and a soft brush, such as nylon, for the scale
which is difficult to remove.

12-2-2

CIP - Cleaning In Place

Cleaning in place is the preferred cleaning method when especially cleaning liquid are processed in PHE unit. Appropriate
cleaning liquid could achieve a sufficient cleaning effect.
Please refer to "Plate Cleaning Manual" to select cleaning liquids and agents for PHE.

P10

12-3

Maintenance12-3-1Heat Transfer Plate Replacement(1)

Removing heat transfer plates
Replace any heat transfer plate with deformation, corrosion, or erosion to a brand-new one.
Please refer to “Plate Arrangement Drawing” and “Gasketting Manual” for heat transfer plate arrangement.
Rail type of upper guide bar (not round type)- Slightly bend the bottom of the heat transfer plate.
- Slightly turn the heat transfer plate to the removing direction.
- Remove the lower hanger from the lower guide bar.
- Lift the heat transfer plate.
- Turn the heat transfer plate to the removing direction with a pivot point of upper hanger.
- Remove the heat transfer plate from the upper guide bar rail.
Round type of upper guide bar (not rail type)- Lift the heat transfer plate.

2- Remove the hanger from the heat transfer plate.
- Turn the heat transfer plate to removing direction with a pivot point of upper guide bar
and remove.
1[NOTE]
(2)

3

Following PHE models use round type guide bar and don’t have hangers. Thosemodels are held by upper and lower guide bars; UX-005, UX-01, RX-00, andCX(W)-01,CX-10.

Hanging heat transfer platesRail type of upper guide bar (not round type)- Hang the heat transfer plate's upper hanger on the upper guide bar rail.
- Turn the heat transfer plate to the inside direction with a pivot point of upper hanger
and install the lower hanger to the lower guide bar.



Round type of upper guide bar (not rail type)- Install the upper hanger of the heat transfer plate on the upper guide bar.
- Turn the heat transfer plate to the inside direction with a pivot point of upper hanger

3

and install the lower hanger to the lower guide bar.
2

- Lift the heat transfer plate and hook the hanger.
- Hang the heat transfer plate on the upper guide bar.

4

1

[NOTE]


P11

Following PHE models use round type guide bar and don’t have hangers. Thosemodels are held by upper and lower guide bars; UX-005, UX-01, RX-00, andCX(W)-01,CX-10.

This type of hanger is set

This type of hanger is set

on front (gasketted) side.

on back (non-gasketted)(Except for YX mode)side.

12-3-2

Replacement of Plate Gasket
Replace a plate gasket if it has any wearing, cracks, swelling, carbonization, adhesion, or foaming.
For types of plate gaskets, refer to each model's "Gasketting Manual".
(1)

Removing the plate gasket
1) Remove the used gasket.
Remove the used gasket with moderate force not to deform the heat transfer plate.
At this time, do not use sharp tools to remove the gasket to avoid damaging the heat transfer plate.

2) Clean the plate gasket groove of heat transfer plate.

(2)

Use solvent on the market to wipe away any adhesive remaining in the heat transfer plate's gasket groove.

Remove dirt, dust, which is stuck on the heat transfer plate's gasket groove.

Preparing to replace the plate gasket
1) If replacing plate gaskets, check and prepare the number of required gasket.
Visually check that there is no dirt, dust, which is stuck on the plate gasket's front and back surfaces. If there is any
visible scale on the front or back surface of the plate gasket, wipe it off using a clean dust cloth.
2) Prepare appropriate adhesive for the plate gasket material.
There are the following four types of adhesive. Use the adhesive HISAKA specified.

(3)

Types of adhesive

Purpose of use

S-1

General use

F-3

For food products

Silicon typeFor silicon gaskets

Double-sided tape

PTFE encapsulated gaskets, food products, etc.

Gasket adhesion.....Glued gaskets
1) Applying adhesiveUniformly apply the specified adhesive to heat transfer plate's gasket groove.
Adhesion work should be done at a well-ventilated location because "S-1"adhesive contain organic solvents. Work in improperly vented room is prohibited.



Adjust the quantity of adhesive applied not to overflow the adhesive from the heattransfer surface when the plate gasket is set on heat transfer plate.

2) Gasketting on heat transfer plateSet plate gasket on heat transfer plate gasket groove.

NG

At this time, be careful to prevent the gasket from run on to gasket groove wall.


The gasket expands during hot season and shrinks during cold season. Whengasketting, put the gasket in tight and or extend it.

3) Curing and pressing (Refer to P5 only if the plate gasket is type "B" or "None".)

Pile up gasketted heat transfer plate, place a weight (approx. 5kg) and a board forcuring. Perform curing time is 15 minutes and over.



5kg

Be careful not to fall over piled plates.
As recommendation, piled height is up to max. 1,000 mm.

P12

(4)

Gasketting....."Slit-In" type plate gasket
1) Gasketting

Attach the plugging part of the gasket into the slit on the outside of plate gasket groove.

Be careful not to run on to gasket groove wall.

2) Gasket BondingGaskets of D-Plate front side and E-Plate back side are not “slit-in” type. Apply adhesive to the gasket groove
and set D-Gasket(s) or E-Gasket(s).
Note: For only models which require gaskets of E-plate back side

[CAUTION]


Plate gasket has two sides. It is correct when stamp and color marking can be seen. (Some models are exception.)
Before gasketting, fix any twisting of gasket and check the front and back surfaces.

12-4

Inspection

Be sure to perform the following inspections before assembling a Hisaka PHE.


Checking of heat transfer plate arrangement

GOOD

NG

or

or

– While moving all the heat transfer plates toward the S-Frame side or E-Frameside one by one, check the heat transfer plate arrangement.
– For heat transfer plate arrangement, refer to the "Plate Arrangement Drawing”
and each model's "Gasketting Manual".
Furthermore, look at the arranged heat transfer plates from the side of PHE. If
the arrangement is incorrect, heat transfer plates with the same configuration will
be lined up.

Heat transfer plate patterns

Inspection of defects on the heat transfer plate two sides and plate gasket surface– While moving the heat transfer plates toward the S-Frame side or E-Frame side one by one, visually check for foreignmaterial on the two sides of the heat transfer plate gasket groove and the plate gasket surface, and for defects such as
damage and/or corrosion.
If there is any foreign material on the two sides of the heat transfer plate gasket groove and/or the plate gasket surface,remove it using a soft cloth such as a dust cloth.
If there is any visible damage, corrosion on the two sides of heat transfer plate or the plate gasket surface, replace it witha brand-new one.
– At the same time, check that the plate gasket is free from peeling off the heat transfer plate.
If the gasket is peeling from plate groove, re-bonding only the peeling part.
– In case of “slit-in” type (plate gasket type "A"), only D-Plate front side and E-Plate back side are to be adhered. Use
Hisaka specified adhesive.

Damage inspection for the tightening bolts and nuts
– Visually inspect the surface of tightening bolts and nuts, and if there is any damage that may interfere with tightening,such as scratches, dents, or rust, replace it with a brand-new one.

P13

12-5

Assembly

Assembly preparation(1)

Prepare the ratchet spanner or the automatic tightening device.

(2)

Grease up the tightening bolts after cleaning all tightening bolt threads.

Assembly work
(1)

Move all heat transfer plates that have been checked/inspected plate arrangement to
the S-Frame side, and move the E-Frame to the S-Frame side.

(2)

Place the tightening bolts for position 3, 4, 11, and 12.
[NOTE]


Place the tightening bolts and nuts in four positions, below the upper nozzles
and above the lower nozzles. (If there are long bolts and short bolts, place thelong bolts first.)[CAUTION]Take care not to fall down the tightening bolts during disassembly andassembly the PHE, as it may cause injury.

(3)

Tighten the bolts to ensure the dimension in position 3, 4, 11 and 12 should be equal.

(4)

Slowly tighten the bolts in order of 3411123 and so on.
[NOTE]


If you have two sets of ratchet spanners and/or automatic tightening device,slowly tighten two tightening bolts that are located diagonal, in order, 3 and 4,
11 and 12, simultaneously.

(5)

Where 3, 4, 11, and 12 become hard to tight, place all tightening bolts and nuts inposition 1 to 14.

(6)

Tightening length of 1 to 14 should be equal.

(7)

Slowly tighten the tightening bolts in order of 1, 2, to 13, 14, to 1.
[NOTE]


If you have two sets of ratchet spanners and/or automatic tightening device,slowly tighten two tightening bolts that are located diagonal, in order, 1 and 2 > 13 and 14 -> 3 and 4 -> 11 and 12 -> … -> 5 and 6 -> 7 and 8, simultaneously.
The difference between each tightening length shall be within 10mm. Further,
the difference shall decrease to 5mm, 3mm and 1mm from 10mm when it getsharder to tighten up in order to prevent galling of the tightening bolts and nuts.

(8)

Repeat step (7) until the tightening below-specified lengths.
Tightening
lengthTightening
lengthIn case that plate gaskets are not to be replaced: Tightening lengths recorded

Tightening
lengthbefore disassembly

Tightening
lengthIn case that plate gaskets are to be replaced: Tightening Length Max. on theTightening
lengthnameplate

Tightening
lengthTightening
length[NOTE]


Tightening for the HISAKA PHE shall be managed by tightening lengths but not by torque counting by millimeters.
It is not a problem if there might be some different tightening torque between each tightening bolt position.
P14

12-6

Leakage Detection(1)

Leakage detection shall be performed once assembly of PHE has been completed.
Check if any leakages appear at top, bottom and both sides of plate pack by carrying out hydrostatic test.
Testing pressure shall not exceed the design pressure.

(2)

Maintain pressure for 10 minutes or longer. All works can be completed if no leakage.
In case of any leakage detected, mark on the leaking part and disassemble PHE again for visual check on the heattransfer plate and gasket surface.

13

Troubleshooting
SymptomHeat transfer performance has
decreased.

The differential pressure increases
or the flow rate decreases.

Possible cause(s)Remedy/ Solution

The heat transfer surfaces get fouled.
Fouling on the heat transfer surface ismaking the plate gap narrow.

Disassemble the Heat Exchanger and makethe heat transfer plates clean.
Be sure to check if any pipes connected tothe inlet and outlet of PHE are clean.

The port holes and/or the heattransfer surfaces are clogging.
After PHE internal pressure shall be
Sealing performance has decreased
due to insufficient tightening.

Fluid is leaking to the outside frombetween heat transfer plates.

atmospheric pressure and tighten the plate
pack sufficiently.
However, do not tight shorter than theminimum length.

Sealing performance has decreased
due to plate gasket deterioration.

Disassemble PHE and replace any damaged
plate gaskets to brand-new one.

Foreign material exists on the sealing
surface of plate gasket.

Disassemble PHE and wipe off the foreignmaterials on the sealing surface of plategasket by using a dust cloth.

Gasket runs on to gasket groove wall.

Disassemble PHE and reset the plategasket.

The heat transfer plate arrangement
is incorrect.

Disassemble PHE and heat transfer platearrangement shall be corrected.

Heat transfer plate has crack and/or
pin-hole due to corrosion etc.

Disassemble PHE and replace any damaged
heat transfer plate to brand-new one.

Heat transfer plate deforms.
After PHE internal pressure shall be
Sealing performance has decreased
due to insufficient tightening.

Fluid is leaking to the outside frombetween S-Frame and the D-Plate.

P15

atmospheric pressure and tighten the plate
pack sufficiently.
However, do not tight shorter than theminimum length.

Sealing performance has decreased
due to D-plate gasket deterioration.

Disassemble PHE and replace any damaged
D-plate gaskets to brand-new one.

Foreign material exists on the sealing
surface of D-plate gasket.

Disassemble PHE and wipe off the foreignmaterials on the sealing surface of D-plategasket by using a dust cloth.

D-plate gasket runs on to gasket
groove wall.

Disassemble PHE and reset the D-plategasket.

Heat transfer plate has crack and/or
pin-hole due to corrosion etc.

Disassemble PHE and replace damaged Dplate to brand-new one.

SymptomPossible cause(s)Remedy/ Solution

Metal covering nozzle has crack and/or
pin-hole due to corrosion etc.
(Continued from the previous page)
Fluid is leaking to the outside frombetween S-Frame and the D-Plate.

Welding part of metal covering nozzle
has crack and/or pin-hole.
Rubber covering nozzle has crack.

Replace a set of the S-Frames with abrand-new one.
Inquire with our company whether thewelding part can be repaired/changed
or not.

Sealing performance has decreased

After PHE internal pressure shall be
atmospheric pressure and tighten theplate pack sufficiently.

due to insufficient tightening.

However, do not tight shorter than theminimum length.

Sealing performance has decreased

Disassemble PHE and replace any

due to E-plate gasket deterioration. (Ifdamaged E-plate gaskets to brand-new

equipment has E-Nozzle)

one.

Foreign material exists on the sealing

Disassemble PHE and wipe off thesurface of E-plate gasket. (If equipment

foreign materials on the sealing surface

has E-Nozzle)of E-plate gasket by using a dust cloth.

Fluid is leaking to the outside fromE-plate gasket runs on to gasket

Disassemble PHE and reset the E-plate

between E-Frame and the E-Plate.

groove wall. (If equipment has E-Nozzle)

gasket.

Heat transfer plate has crack and/or

Disassemble PHE and replacedamaged E-plate to brand-new one.

pin-hole due to corrosion etc.
Metal covering nozzle has crack and/or
pin-hole due to corrosion etc. (Ifequipment has E-Nozzle)

Welding part of metal covering nozzle
has crack and/or pin-hole. (If equipment
has E-Nozzle)

Rubber covering nozzle has crack. (If

Replace a set of the E-Frames with abrand-new one.
Inquire with our company whether thewelding part can be repaired/changed
or not.

equipment has E-Nozzle)

The mixture of hot side media and cold

Heat transfer plate has crack and/orside media has occurred.

pin-hole due to corrosion etc.

Disassemble PHE and replace any
damaged heat transfer plate to brandnew one.

P16

MEMO

P17

14

Plate Arrangement Drawing<Sample>- The equipment number, applicablecode etc. are indicated.

- Equipment specification isindicated. such as:- Plate arrangement of

Operating conditions, design

heat transfer plates ispressure, test pressure, designindicated.

temperatureetc.

- Plate arrangement andnozzle connection size are- Material components and painting- Summary for platecolor.

arrangement of heattransfer plateincluding plate holespecification / numberof plates is indicated.

- Customer information.

- MFG number, Model, and- Revision history.
-

The hole symbols and names for heat transfer plates are indicated.

P18

15

Assembly Drawing

This is one example of the Assembly Drawing of a Hisaka Plate Heat Exchanger. The following information is described in the Assembly Drawing.

- Describes the position,
standard, and diameter for
piping to be mounted.
- Describes this equipment's
weight.
- Describes accessories.

- Tightening length for theheat transfer plates andfull length of the PHE are
illustrated.

- Describes the equipment
number, applicableregulations, and the like.

- The PHE’s external
dimensions andconnect position of
piping are illustrated.
- Describes the names,
materials, required quantity,and specifications ofcomponents in simple terms.

- Describes customer
information.

- Describes the serial
number, model, andnumber of equipment units.

- This is the a drawing of theequipment's foundation dimensions.
- Some also include a detailed drawing of the nozzle.

P19- Describes this drawing's revision history.

16

Exploded View [e.g.: J-Type Heat Exchanger]

２

３－３－１
３－２－２
３－２－１
３－２－２
３－２－１
３－２－２
３－２－１

Back
７

３－２－２
３－１－１
４
１

３－３－２

１－１
８

１０
１２
５
９

３－１－２

６

１１

*1. Note: D/E plate gasket types with holes are different from the one without holes.

12

Nameplate

11

S4-Nozzle

10

S2-Nozzle

9

S3-Nozzle

8

S1-Nozzle

7

Tightening bolt and nut

6

Frame support

5

Lower guide bar (Square pipe)

4Upper guide bar (Rail)

3-3-2

E-Plate gasket

*1

3-3-1

E-Plate

3-2-2Channel gasket

3-2-1

Channel plate

3-1-2

D-Plate gasket

3-1-1

D-Plate*1

3

Heat transfer plates with plate gaskets

2

E-Frame1-1Stud bolt and nut

1

S-FramePart number

Part name
P20

16

Exploded View [e.g.: P-Type Heat Exchanger]

６

１２
２
１４

４

３－３－１
３－２－２
３－２－１

３－２－２
３－２－１
３－２－２
３－２－１
３－２－２

Back

３－１－１

７
１３

１
１５
１－１
８
３－３－２
１０

１６

９

３－１－２

５

１１

*1. Note: D/E plate gasket types with holes are different from the one without holes.

16

Nameplate

15

E4-Nozzle

14

E2-Nozzle

13

E3-Nozzle

12

E1-Nozzle

11

S4-Nozzle

10

S2-Nozzle

9

S3-Nozzle

8

S1-Nozzle

7

Tightening bolt and nut

6

Guide bar support

5

Lower guide bar

4Upper guide bar

3-3-2

E-Plate gasket

3-3-1

E-Plate

3-2-2Channel gasket

3-2-1

Channel plate

3-1-2

D-Plate gasket

3-1-1

D-Plate*1

3

Heat transfer plates with plate gaskets

2

E-Frame1-1Stud bolt and nut

1

S-FramePart number
P21*1

Part name16

Exploded View [e.g.: Welded P-Type Heat Exchanger]

６

１２
２

１４
４
３－３－１
３－２－２
３－２－１
３－２－２
３－２－１
３－２－２
３－２－１
７

３－２－２
３－１－１

Back

１３

１

１５

３－３－２

１－１
８
１０

１６

３－１－２
９
１１

５

*2. When number of plates is an odd, the end of the heat transfer plate is a single plate, not a cassette.
*1. Note: D/E plate gasket types with holes are different from the one without holes.

16

Nameplate

15

E4-Nozzle

14

E2-Nozzle

13

E3-Nozzle

12

E1-Nozzle

11

S4-Nozzle

10

S2-Nozzle

9

S3-Nozzle

8

S1-Nozzle

7

Tightening bolt and nut

6

Guide bar support

5

Lower guide bar

4Upper guide bar

3-3-2

E-Plate gasket

*1

3-3-1

E-Plate (Cassette)

*2

3-2-2

Channel gasket

3-2-1

Channel plate (Cassette)

3-1-2

D-Plate gasket

3-1-1

D-Plate (Cassette)*1

3Heat transfer plates with plate gaskets

2

E-Frame1-1Stud bolt and nut

1

S-FramePart number

Part name
P22

16

Exploded View [e.g.: BP2CL Type Heat Exchanger]

７

６

１２ ２

３－１－１
３－２－２
３－２－１
３－２－２
３－３－１

１４

２５
２３
２２

Back

３－１－１
３－２－２
３－２－１
３－２－２
３－３－１

４

１３

１８
１７

１６
２６

２１

２７

１１

３－３－２

９

３－１－２

１

３－１－２

１０

３－３－２

３－３－２

Back

８

１９

３－１－２

Back

２４

３－３－２

Back

１５

３－１－２

３－１－１
３－２－２
３－２－１
３－２－２
３－３－１

３－１－１
３－２－２
３－２－１
３－２－２
３－３－１

２０

５

*2. S, E, and C nozzle arrangements will be changed depending on heat transfer plate hole types.
*1. Note: D/E plate gasket types with holes are different from the one without holes.

27

Nameplate

26

C24-Nozzle*2

25

C22-Nozzle*2

24

C23-Nozzle*2

23

C21-Nozzle*2

22

C2-Frame

21

C14-Nozzle*2

20

C12-Nozzle*2

19

C13-Nozzle*2

18

C11-Nozzle*2

17

C1-Frame

16

L-Frame15

E4-Nozzle*2

14

E2-Nozzle*2

13

E3-Nozzle*2

12

E1-Nozzle*2

11

S4-Nozzle*210

S2-Nozzle*2

9

S3-Nozzle*2

8

S1-Nozzle*2

7

Tightening bolt and nut

6

Guide bar support

5

Lower guide bar

4Upper guide bar

3-3-2

E-Plate gasket

3-3-1

E-Plate

3-2-2Channel gasket

3-2-1

Channel plate

3-1-2

D-Plate gasket

3-1-1

D-Plate*1

3

Heat transfer plates with plate gaskets

2

E-Frame1

S-FramePart number
P23*1

Part name17

Inquiries

Contact info for inquiries
HISAKA WORKS, LTD., Heat Exchanger Div., Sales Department *17-1
Head office: 2-12-7, Sonezaki, Kita-ku, Osaka City, Osaka 530-0057

Tel : +81-6-6363-0020

Japan

Fax : +81-6-6363-0161

Konoike Plant: 2-1-48, Higashi-konoike-cho, Higashi-osaka City,

Tel : +81-6-6363-0020

Osaka 578-0973 JapanFax : +81-6-6363-0161

Tokyo Branch office: 1-19-8, Kyobashi, Chuo-ku, Tokyo 104-0031

Tel : +81-3-5250-0760

Japan

Fax : +81-3-3562-2760

Japan locations*17-1. Other Japan locations can be referred QR code.
URL： https://www.hisaka.co.jp/english/company_info/access.html
Global Network
Overseas locations can be referred QR code.
URL： https://www.hisaka.co.jp/english/company_info/access_world.html

Overseas locations[NOTE]


Please inform us the "MFG. Number" and "Model" described on the nameplate or Plate Arrangement Drawing andAssembly Drawing.

For more information
Hisaka Works, Ltd. official homepage (https://www.hisaka.co.jp/english/).



Customer's memo
Please fill in the table below with PHE information.
Company nameContact personnel
Post code
Address
Contact
Information
Tel/Fax
e-mailItem Number
MFG. Number
Model
Date MFG.
Maintenance
Records
P24



Inquiry Details
Please describe the symptoms of your PHE to lead the better solution.
Location(s) of failure

Symptom(s)P25Hisaka Works, Ltd., Heat Exchanger Division acquires both ISO9001 and ISO14001 certification.

HE-ME0013R28