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WARNING
●
Wear protectors
When piping is removed or pump is disassembled/assembled, wear protective gear
such as safety goggles and protective gloves etc.
●
Release pressure inside piping
If pressure is not released from piping, liquid may be splashed. Release residual pres-
sure before maintenance works start.
●
Interruption of supplied air
Interrupt air supply to dampener before maintenance works start.
●
Power off
Always turn off power supply prior to maintenance works. Display a sign near power
supply switch to notify other person that someone is "WORKING".
Turned on, by mistake, power supply during maintenance works may lead to personal
injury. Each operator must pay special attention.
■
Routine inspection
a. Confirm if the liquid is discharged normally from dampener (pump).
b. Confirm the vibration width of pressure gauge to see no change in discharge capacity and pressure.
c. Confirm if pipe does not vibrate abnormally.
■
Periodical inspection (Make the inspection once a month or more.)
If the air leakage through cylinder part is confirmed, stop the pump after pump discharge side pressure is released
to leave it until it is cooled down. And then, securely tighten the cap nuts of dampener.
Tightening torque
PDA-20W
PDA-40W
6.4 N m
6.4 N m
12.7 N m
PDA-80W
No.
Q'ty/unit
1
1
One year (Continuous operation)
Time to be replaced
Parts
Bellows unit
Note1: The quantity shows the number of the parts which required to a dampener.
Note2: Time to be replaced is just for your reference. It is not guaranteed.
Note3: The durability of consumable parts depends on pressure, temperature and characteristics of liquid.
Repair is done by IWAKI.
2. Maintenance & inspection
3. Consumable parts
15
2
Valve seat
