Plate Heat Exchanger
5 “Slit-In” Type Gasketting Manual
Introduction
About this document
 In addition to this document, the Manuals for HISAKA PHEs consist of the following six documents. Read them thoroughly andunderstand the precautions regarding the safety of the equipment and its functions before handling the equipment.

1 Installation Manual, 2 Operation and Maintenance Manual, 3 Gasketting Manual, 4 Plate Cleaning Manual,
6 Mixed Gasket Materials Manual, 7 Strainer Maintenance Manual.
You can also download these documents on our company website. https://www.hisaka.co.jp/english/ This document is the operation and maintenance manual for “Slit-in” type plates of plate heat exchangers (PHE) to which gaskets
are installed without adhesives. Refer to the separate operation and maintenance manual for food product PHE(FX-A Series).
 This document is created for a person who fully understands the language it is written in. If a person, who is not able to understandthe language written herein, will handle the equipment, please provide safety instructions to the personnel/operators.
 The PHE supplied may differ from the drawings and pictures in this document depending on the optional parts if any. Also, for thepurpose of explanation, the drawings and pictures in this document may omit the details, accessories, or the like.
 Changing the contents of this document, in part or in whole, or using this document for anything other than its intended purpose is prohibited.
About gasket use
 To prevent injury and damages, do not use the gaskets other than for their intended purpose and specifications. Also, during
maintenance, follow the instructions of related documents.
About worker limitations
 PHE maintenance should be carried out by a worker who has received training in safety and danger prevention.
 Work in high places should be carried out by a worker who fully understands the danger of the work and has received training insafety and danger prevention.
Export Regulations on the Equipment
 In case of export of HISAKA PHE and its component parts such as plate, gasket and so on, please follow the local law andregulations.
Disposal of the Equipment
 Do not incinerate gaskets. Incinerating gaskets releases toxic gas and is extremely dangerous.
 Any unnecessary gasket should be disposed as industrial waste in accordance with international, national, prefectural, andmunicipal regulations.
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 accepts no liability for any failures in the function or performance of the equipment caused by use of this equipment in amanner that does not adhere to the procedures indicated in this manual.

“Slit-in” Manual
Table of Contents
1

Safety Precautions

P1

2“Slit-in” Plates and Gaskets

P2

3“Slit-in” Gasketting Procedures

P2 to 4

4

“Slit-in” Gasket Removal Procedures

P4

5

Plate Disassembly and Assembly

P4

6

D-Plate Gasket Installation Procedures

P4

7

Other Precautions

P4

8Inquiries

P5

1

Safety Precautions

Read through this manual carefully before use and use the PHE properly as indicated.
If you have any questions, please inquire with our company.
Precautions are categorized using the following symbols.

WARNINGCAUTIONNOTEThis symbol indicates content where mishandling could result in death or severe injury.
This symbol indicates content where mishandling could result in injury or property damage.
This symbol indicates important matters and/or useful information.

Meanings of Symbols
Indicates items that are

Indicates items that are"prohibited (something that you must NOT do)".

"mandatory (something that you must do)".

WARNINGDo NOT loosen PHE's tightening bolts/nuts except for maintenance work.

Do NOT use tightening bolts with loosened bolt heads.

The PHE could come apart if tightening bolts/nuts are loosened before installation.

If the bolt head loosens and the bolt head (nut) comes off the bolt, it could fly off at highspeed. This is dangerous and contact could cause serious injury or property damage.

Do NOT use a flange gasket for the nozzle of heat exchangers with synthetic

Do NOT incinerate gaskets.

rubber covering.
(Flange gaskets are required for nozzles with metal covering.)

Incinerating gaskets releases a toxic gas and is very dangerous.
Any unnecessary gaskets should be disposed as industrial waste in accordancewith international, national, prefectural, and municipal regulations.

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

Install a protective cover on heat exchangers that handle high temperatures,

For small size PHE, do NOT perform pneumatic test at the same pressure ashigh pressure, or dangerous fluids such as strong acids or strong alkalies.

hydrostatic test pressure.

If a dangerous fluid leaks, it could cause a serious accident.

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

For the industrial waste treatment company, use a company that has received
permission from the prefectural governor.

If a leak occurs during a pneumatic test using compressed air or nitrogen, it is extremely
dangerous as, in addition to the test pressure, volume expansion causes an impact.

Make sure that the operation is stopped, the internal pressure is "0", and theIn general, do NOT perform a pneumatic test in excess of 0.75 MPaG.

fluid temperature has sufficiently dropped before disassembling the PHE.

Do NOT operate in excess of the design conditions

If a fluid sprays out from the heat exchanger interior during disassembly, it could(temperature, flow rate, pressure, etc.).

cause burns or lacerations.

It may cause deformation of the heat transfer plates or leakage. Also, the required
performance may not be achieved.
Do NOT loosen the thermometer, pressure gauge, tightening bolts and nuts, orPerform gasket replacement in a well-ventilated area or area with ventilation

any other accessories during operation and when the PHE are pressurized.

equipment.

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

The gasket dedicated adhesives "S-1" contain organic solvents. Breathing the volatile

Do NOT use tightening bolts with damage such as significant rust or cracks.

ingredients for a long time may cause symptoms such as headache, dizziness, andIf a tightening bolt breaks during operation or during disassembly, not only will thenausea. Should these symptoms occur, move somewhere with fresh air and rest, stayfragments fly off, but there is also danger of the fluid in the heat exchanger interiorcalm and warm, and seek medical attention.

spraying out.

CAUTIONDo NOT touch the side of the heat exchanger element (edge of the heat

Request an expert to perform piping work, and review the assembly drawings

transfer plates).

with them beforehand to ensure that connections are properly made.

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

Work performed by inexperienced personnel can result in a faulty or improperBe sure to wear cut-resistant gloves whenever touching the heat transfer plates.

connection. An improper connection can result in failure to provide the specified

Do NOT place objects on the heat exchanger.

performance or an equipment malfunction.

Doing so may cause deformation of heat transfer plate or a falling object may
cause injury during operation.
Do NOT touch anything the side of the heat exchanger element (edge of theSecure working space around the PHE.

heat transfer plates).

Installation and piping design must take into account the working space required

Deformation of the heat transfer plate may cause damage to the plate gasket andfor using disassembly and installation tools.

result in leakage.
In general, do NOT remove the stud bolts on the heat exchanger nozzles.

Clean the piping interior before connecting.

Removing the stud bolts may cause damage on the threads.

Clean piping thoroughly so that no debris enters the PHE.

If it is absolutely necessary to remove them, remove them carefully so as not todamage the screw threading on the stud bolt and the frame. Also, stud bolt removal
shall be done at the customer's liability.

Select flange gasket material that is suitable for the fluid specifications.
Flange gaskets are required for tube flange and metal boot types.

Do NOT weld or attach any piping support to the frame, guide bar, or guideInstall sufficient support for piping connected to the PHE.

bar support.

A large piping load to the PHE may cause the frame to become deformed or

Such welding may cause thermal damage to gaskets, or the attached part mayleakage.

cause interference that prevents parts from fulfilling their function. Furthermore, theinstalled part will be an obstacle and will prevent disassembly.
Do NOT allow debris or foreign material to get inside the PHE.

Perform maintenance of PHE that handle dangerous fluids, such as a strong

The clearance of the PHE is quite narrow, such that it can be easily clogged byacids or alkalies, in an environment that has wastewater treatment equipment.

debris or foreign material. When flushing the piping, take measures such as

Process waste fluid in accordance with the law and regulations. Be careful not to drain

installing a temporary strainer at the inlet piping or bypassing the PHE in order toliquid into a river or ocean area. If untreated liquid leaks, take measures in accordance

prevent debris or foreign materials from entering the PHE.

with the "Safety Data Sheet (SDS)" for the treatment liquid you used.

Do NOT allow the fluid to freeze.
In cold areas, remove the fluid inside the heat exchanger and empty the equipment
before storing it.

P1

2“Slit-in” Plates and Gaskets

2-1Plates
“Slit-in” plates are indicated by the letter "A" at the end of the model number indication. (Examples: UX-016A and UX-216A)

“Slit-in” plates have slits (holes) that are used for fixing gaskets to the plate.

These slits (holes) are located on the outside of the plate gasket groove and in the port holes (excluding UX-005A andUX-01A).

2-2Gaskets
“Slit-in” gaskets are indicated by the letter "A" in front of the material indication. (Examples: A-NBR and A-EPDM)“Slit-in” gaskets have protrusions for fixing the gasket to a plate.

Handle gaskets with care because a protrusion can be cut easily.

3“Slit-in” Gasketting Procedures

3-1

Type of “Slit-in” Gasket Protrusions
There are four type of protrusions depending on each PHE model (Fig.1).

L-typeO-type

Hook-lock typeI-typeFig. 1 Type of Gasket-Fixing Protrusions
Table 1 Type of Gasket-Fixing Protrusions by Model
ModelL-typeO-typeI-typeHook-lock type---



--

-

EX-11A, 15A---CX-01A---

UX-005A
RX-01A
WX-10A
CX-10A
FX-01A, 03A, 10A, 30A
UX-01A, 20A, 40A
UX-10A, 30A, 30LA
RX-10A, 30A, 50A
SX-10A, 30A, 30SA, 40A, 70A
LX-00A, 10A, 20A, 30A, 40A, 50A, 50SA
GX-20A, 50A
FX-05A

3-2

Procedures for Setting L-type Protrusions
1) Press the gasket protrusion at point A by hand for inserting into the slit (hole) on the plate as shown in Fig. 2.
2) Keep pressing at point A by hand, press point B to the plate surface.
It is more effective and secure to use a flat-blade screwdriver or similar tool than by hand.

P2

Gasket Body

AaL-type Protrusion

aPlateL-typeProtrusion
ASlit

B

a-a Cross-section

PlateFig. 2 Procedures for Setting L-type Protrusions
3-3

Procedures for Setting O-type/ I-type Protrusions
Set the gasket body into the plate groove properly. Press the gasket in point C as shown in Fig. 3 and 4 with pressing theprotrusion in point A and B for O-type / point A for I-type.
CO-type Protrusion

BI-type Protrusion

CAA

Fig. 3 O-type Protrusion Setting Procedures
3-4Fig. 4 I-type Protrusion Setting Procedures

Procedures for Setting Hook-Lock Type Protrusions
Set the gasket body into the plate groove properly. Press the gasket in point C as shown in Fig. 5 with pressing the protrusion inpoint A and B.
BCA

Fig. 5 Procedures for Setting Hook-Lock Type Protrusions
3-5

Procedures for Setting Gaskets without Port Hole (Excluding UX-005A and UX-01A)
1) In case of no slit on plate, cut the protrusion of Gasket (* part in Fig.6) with scissors as below Fig.6 and 7.
Double-Seal Side
Plate
Hole

No HoleBefore Cutting

GasketProtrusion*
Double Seal Connection
Double Seal of Transfer Surface Side

Fig. 6 Part Names

After Cutting

Fig. 7 Cutting Procedures

P32) After cutting the protrusion of the port hole, Fix double seal connection to the plate by adhesives "S-1" in case of generic. In
case of food applications, Peel back one side only of Double-Faced Tape. Fix double seal connection to the plate by the tape.
Refer to below Fig. 8.
Gasket (Port Hole Side)
Double Seal Connection

Gasket (Heat Transfer Side)
Fixed by Tape

Fig. 8 Procedures for fixing by Tape
3-6

Set Checking
Check the setting of all gasket protrusions properly.

4“Slit-in” Gasket Removal Procedures
Push up gasket protrusion from the backside of the plate. Pay attention not to cut protrusions. Wear cut-resistant gloves whileworking this procedure to prevent injury.

5Plate Disassembly and Assembly
When disassembling plates, some gasket protrusions might slip out of the slits. Reset the slipped out protrusions into their slits
before assembly and tighten frame.

6D-Plate Gasketting Procedures
Each model has different gasketting procedures. Refer to "3. Gasketting Manual" of your PHE model for gasket names andinstallation positions.
This section indicates the gasketting procedures for D-gasket, “Slit-in” type. Models not indicated in table-2 are regardless of“Slit-in” type, adhesive is necessary for D-gasket setting. Refer to "3. Gasketting Manual" for gasketting by adhesive.
Table 2 D-Plate Gasketting Procedures for “Slit-in” type
Models: UX-005A, UX-30A, SX-40A and SX-70A[NOTE]
SlitAdhesive The figure shows model UX-005A. Plate type andprotrusion position are different depending PHE model.

 Refer to "3. Gasketting Manual" of your PHE for gasket

names and type.

7

Other Precautions
1) Wash and remove solid scales and/or other foreign material before assembly.
2) Long period use make double seal of transfer surface side (refer to Fig. 6) insufficient fit to plate groove.
Existing gasket still can be re-used. Fix it as same procedure as 3-5 2)

P4

8Inquiries
Contact info for inquiries
HISAKA WORKS, LTD., Heat Exchanger Div., Sales Department *8-1
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*8-1. 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 and Assembly 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.
Item Number
MFG. Number
Model
Qty
Date MFG.
Maintenancerecords
MemoP5

Hisaka Works, Ltd., Heat Exchanger Division acquires both ISO9001 and ISO14001 certification.

HE-ME0037R7
2023.05.HSK