BLOVAC DRUM
INSTRUCTION MANUALThis manual is the explanation booklet for the safe and proper use of BLOVAC DRUM. Be sure to read throughthis manual before using. Keep this manual carefully at the convenient place to read whenever you need.
※Specifications are subject to change for improvement without prior notice.

SYMBOL MARK, SIGNAL WORD and ITS MEANINGIn the paragraph with these indications, the very important caution that might cause the injury to the human life ordamage to property is mentioned. Fully realize these indication and meaning and then read the text.
"FORCIBLE WARNING" you must do without fall.

警告"ROUSE CAUTION" you must give attention.

注意BLOVAC CO., LTD.
TOKYO, JAPAN1.SUMMARYBLOVAC DRUM is the pump of exclusive use for the drum, which makes use of the compressed air. It has three types. One is Q
TYPE that is only for suction, second is TO TYPE that is only for discharge and the last is QTO TYPE that is for both suction
and discharge. Also, besides the general type, there are three special types such as G・S・N. , according to the liquid to behandled. Any type of them has rather simple structure and can be easily handled. In addition, each type is equipped with
distinguished efficiency.

2.MODEL and SPECIFICATION
Q ・ TO ・ QTO

MODEL
OBJECTIVE
LIQUID

GENERAL USE

G

WATER・OILGASOLINE・LIGHT OIL
ALOCOHOLE

OIL RESISTANT
VINYL CHLORIDE
φ32 x 3m

NITRILE RUBBERWITH EARTH
φ25 x 3m

SN

THINNER

GENERALSOLVENTALUMINUM ALLOY

MAIN BODY
HOSE

SPECIAL RUBBER
φ25 x 3mSUS
φ25 x 2m

NYLON

FLOAT BALLFLEXIBLE TUBE

ALUMINUM ALLOYNITRILE RUBBERO-RINGFLUORINE
RUBBERTEFLON* The O-ring for the air system of all the models is of Nitrile Rubber.
* The length of nozzle is 30cm.
* The air volume adjustment screws are supplied with Q and QTO type as the standard accessories.
Please refer their usage to［4 . CAUTION ON HANDLING］.

3.PART NAME and FUNCTION

Q TYPESUCTION USE ONLY
EJECTOR
Inside air of drum is sucked out by compressed air to make the inside vacuum.

JOINT(NITTO 30PF)HOSE JOINT

Strainer is inside to preventfrom dust's coming in.

AIR VALVEKNURLED CLASPFLOAT BALL
When the drum is filled up ,the ball chokes the hole of ejector
not to make the inside vacuum.

QTO TYPE
HOSE

BOTH SUCTION / DISCHARGE USE
SAFETY VALVENOZZLEFOR Q TYPEJOINT(NITTO 30PF)
Strainer is inside to preventfrom dust's coming in.

AIR VALVETO TYPEEJECTORDISCHARGE USE ONLYCAPREDUCING VALVE AIR
RELEASING VALVE
Compressed air is reduced her
to 0.5 - 0.6 kgf / cm2 and fed tothe drum. Air valve releases
the inside air of drum tomake it the ordinary pressure.

JOINT(NITTO 30PF)
Strainer is inside to preventfrom dust's coming in.

AIR VALVESAFETY VALVEKNURLED CLASP

HOSE
JOINT

For suction , turn to theright end.
For discharge, turn tothe left end.

REDUCING VALVE
Compressed air is reduced
here to 0.5 - 0.6 kgf / cm2
and fed to the drum.

This is flexible and sticks tothe bottom of drum so thatthe rest of liquid after
discharge becomes a little.

HOSE
JOINT
HOSE

FLOAT BALLHOSEWhen the drum is filled up ,the ball chokes the hole ofejector not to make the insidevacuum.

BALL VALVENOZZLEFOR QTO TYPE

BALL
VALVE
FLEXIBLE RUBBER

Inside air of drum
is sucked out bycompressed air tomake the insidevacuum.

SWITCH LEVERNOZZLEFOR QTO TYPE

FLEXIBLE RUBBERThis is flexible and sticks tothe bottom of drum so thatthe rest of liquid after
discharge becomes a little.

KNURLED
CLASP

4.CAUTION ON HANDLING"WARNING"
警告① Becaue of the material, any type cannnot handle the corrosive acid and the alkalies.
② The applicable air pressure to all the models is below 7kg/cm2.
When the air pressure is higher than it , reduce the pressure to below 7kg/cm2.
③ For Q and QTO type, the air adjustment screw (hereinafter called ADJUSTMENT SCREW) #7 for the air pressure below
7kg/cm2 is set on delivery from the factory. When your air pressure is lower than it, replace it with the proper Adjusment
Screw according to Table 1. But, in case the drum is damaged, use the adjustment screw for one-step higher pressure.
To replace the adjustment screws, remove the joint of the air valve and then a adjustment screw with slotted head canbe seen on the valve side. (Use the minus screw driver. )Table 1APPLICABLE AIR PRESSURE
AIR ADJUSTMENT SCREW
Below 7kg/cm2#7 ( 7 is marked )#6 ( 6 is marked )Below 6kg/cm2#5 ( 5 is marked )Below 5kg/cm2
NO MARKING
Below 4kg/cm2"CAUTION"
注意④ The drum to be used must be in accordance with JIS Standard 1 kind M class, 2 kind H class ( plate thickness 1.2 mm )or more. But, when both operation of suction and discharge are repeatedly done in the same drum, the drum of 1 kind
H class ( plate thickness 1.6 mm ) or more and of no damage must be used.
⑤ When the special type (G・S・N) is used, the earth wire must be surely grounded.
⑥ The temperature of the object to be handled is ; General type -- below 60℃ / Special type -- below 110℃
⑦ The reducing valve and the safety valve are already adjusted. Do not break up nor adjust them.
⑧ In the case of suction, pay attention that the ejector might spout out the liquid due to the soiled float ball when the liquid
fills the drum. When the volatile liquid is handled, pay enough attention to ventilation.
⑨ Do not put the goods on the drum. It may leap up when the valve is opened or closed.
⑩ In the case of discharge, do not put the end of nozzle into the liquid. It is because the liquid in the drum is blown up by
the air after finishing discharge of the liquid.
⑪ In the case of the liquid that dislikes moisture, remove moisture in the compressed air by a air drier or the like.
⑫ In the case of handling the liquid that contains the foreign matters like the sludge, the metal cutting chips or the like, themaximum limit of the size of such foreign matters is 7 - 8 mm that is possible to pass through the hose and the body.
⑬ When disconnecting the body from the hose, do not separate the clasp from the hose.
⑭ After finishing the operation, shut the air valve without fail.

5.HOW TO HANDLE
1) Q TYPE① Set the BLOVAC DRUM onto the filling opening of the drum firmly not to leak the air. Shut the ventilation hole (thesmaller hole on the lid.)② Shut the air valve. (＝ set the lever horizontally.)③ Connect the joint with the compressed air.
④ Open the air valve. (＝ set the lever vertically.) Then, suction of the liquid starts.
⑤ When the drum is filled up, the float ball works to stop suction automatically.
⑥ Shut the air valve.
At this time, pay attention that if the end of the hose is located lower than the drum, the liquid in the hose flows
backward.

2) TO TYPE①②③ are same as Q TYPE.
④ Shut the ball valve. (＝ set it perpendicularly to the nozzle.)⑤ Check the air release valve. If it is open, push it down and turn it to the right after moving the cap up and down sometimes.
⑥ Open the air valve.
⑦ Open the ball valve. (＝ set it parallel to the nozzle) and then the liquid is discharged. When the drum becomes empty,
the air come out with the liquid.
⑧ Shut the ball valev and then discharge of the liquid stops.
⑨ Shut the air valev.
⑩ Open the air release valve. (＝ turn the cap to the left so that the inside air of the drum pushes up the cap and isreleased to make the air pressure of the drum inside the ordinary pressure.)⑪ Shut the air release valve in the same procedure as 5) immediately after releasing the air. (Excepting the time torelease the air, always keep the air release valve shut.)3) QTO TYPE①②③ are same as Q TYPE.
④ Shut the ball valve. (Perpendicular to the nozzle.)⑤ Set the switch lever to the purpose. (Refer to the figure in right.)
Turn the lever to IN (suction) or to OUT (discharge) till it stops firmly. If the lever stopped
halfway, it will cause the abnormal pressure.
⑥ Open the air valve.
⑦ When the ball valve is opened. In the case of IN (suction) : The liquid is sucked. When the drum becomes empty, thefloat ball works to stop suction. In the case of OUT (discharge) : The liquid is discharged. When the drum becomes
empty, the air comes out with the liquid.
⑧ Shut the ball valve. In the case of IN, it prevents the liquid from flowing backward.
⑨ Shut the air valev.
⑩ In the case of OUT, the air release of the drum inside after operation must be done with the switch lever surely after
shutting the air valve. (When the change lever is set to "IN" position, the inside air is released and the inside of thedrum turns to be the ordinary pressure.)6.MAINTENANCE
1) STRAINER
If the strainer of the joint gathers the dust too much, it may cause the trouble to the flow of the compressed air or affect thefunction of other parts. So, clean it with the soapy water without taking out the strainer from the joint.
2) FLOAT BALL and GROOVE
Always keep the float ball and its groove clean to move smoothly. If its movement is not smooth, it becomes the cause of theleakage of liquid from the ejector.

7.REFERENCE
1) VACUUM DEGREE and AIR CONSUMPTION of EACH AIR ADJUSTMENT SCREW (In the case of SUCTION)
NO MARKING#6#5#74000
3000300
NO MARKING #52000#6#710002001000

CONSUMPTION (L/min)

VACUUM DEGREE (mmH2 0)500001Vacuum Degree : Solid Line
Air Consumption Volunme : Broken Line234567APPLIED AIR PRESSURE (kgf / cm2)2) Max. Discharge Pressure and Air Consumption Volume (In the case of DISCHARGE)
Max. Air Consumption Volume
Max. Discharge Pressure 0.5 - 0.6 kgf / cm2

100 L/ min.

8.TROUBLE AND TROUBLESHOOTING
When anything abnormal occurs, stop operation immediately and check the trouble according to the following tables.

In the case of Suction (IN)
TROUBLENo Suction
At AllSunction Is
Weak

MODEL
Q・QTO

Q・QTO

QTO
Drum isdeformed
hollowly

Q・QTO

INSPECTION AND TREATMENT
Compressed air is firmly connected ?
Drum is shut tightly ?
The float ball and its groove are clean ?
Air adjustment screw is correct ?
Drum or Hose has no damaged part ?
Hose or Nozzle is not choked ?
Strainer is not soiled ?
Viscosity of liquid isn't high ?
Switch Lever is fully turned to the stop position on IN side ?
Air Pressure isn't high ?
Air adjustment screw is correct ?
How is the strength of drum ?

(Reference)(5-1-①)
(6-②)
(4-③)

(6-①)
(5-3-⑤)
(4-②)
(4-③)
(4-④)

In the case of Discharge (OUT)
TROUBLENo Discharge
At AllMODEL
TO・QTOTO

Discharge
Is WeakDrum Is Swelled

TO・QTOQTO
TO・QTOQTO

INSPECTION AND TREATMENT(Reference)
Compressed air is firmly connected ?
Drum is shut tightly ?
(5-1-①)
Drum or Hose has no damaged part ?
Air Release Valve is shut ?
(5-2-⑤)Hose or Nozzle is not choked ?
Viscosity of liquid isn't high ?
Switch Lever is fully turned to the stop position on OUT side ? (5-3-⑤)
How is the strength of drum ?
(4-④)
Switch Lever is fully turned to the stop position on OUT side ? (5-3-⑤)

Manufacturer

BLOVAC CO., LTD.
1-20-107 1-Chome Azabudai, Minato-Ku, Tokyo 106-0041, Japan
TEL : +81-03-3586-6341 FAX : +81-03-3582-4463

122606.N.5000 Printed in Japan