Pump Solutions Group PZiG Series - Manual (Page 14)

13
Operation
Operation
¡When handling liquid-end sections, be sure to wear
protective coverings (rubber gloves, mask, protec-
tive goggles, chemical-resistant overalls, etc.)
appropriate for the chemicals be using used.
¡If you forget to open the discharge-side valve or if
foreign matter clogs the discharge-side piping, the
pressure in the pump and pump head may increase
beyond the range indicated in the pump specifica-
tions. This may result in the chemical leaking or
spurting out, or in damage to the pump or piping.
Check valves before starting pump operation.
! WARNING
Check the following:
Before Operation
Check Point Details to Check Remarks
Chemical
tank
Make sure that there are sufficient chemicals
in the chemical tank. Replenish the chemical
tank if necessary. Pay particular attention when handling chemicals or
performing processes that are adversely affected by
contact with air.
Piping
Check the piping for any disconnections, liq-
uid leaks caused by damage to piping.
Reconnect or repair damage if necessary.
Valves
(suction side and
discharge side)
Make sure that valves on the suction side
and discharge side are open. Open any
closed valves.
Closed valves may cause pressure to build up, chemi-
cals to spurt out or damage piping.
Power supply
Make sure that the pump is connected cor-
rectly to the specified power supply.
The electronic circuit or solenoid may seize.
Electrical
wiring - signal
Check for wrong connections.
Wrong connections may cause short circuits or electri-
cal leakage.
During Operation
Check Point Details to Check Remarks
Pump head
Check for chemical leaks from the hole at the
bottom of the auxiliary ring on the rear of the
pump head.
If a chemical leaks, the diaphragm may be damaged.
So, inspect the diaphragm.
Joints - hoses Check for liquid leakage or looseness.
If there are chemical leaks, re-tighten joints.
If this does not correct the chemical leaks, inspect
each of the O-rings.
Discharge-
side pressure Check the needle of the pressure gage on
the pump discharge side.
If an abnormal numerical value is indicated, the piping
may be clogged or valves may be blocked.
Inspect the piping also.
¡When using the pump for the first time
¡When restarting the pump after prolonged downtime
¡When gas lock is occurring on the pump
¡When the chemical tank is empty, for example, when the
chemical tank is replaced
Release air (page 14)
¡When using the pump for the first time
¡When changing the discharge volume
Adjust the discharge
volume (page 14)
¡When stopping operation for a long time
¡When restarting the pump after prolonged downtime
When stopping operation
for a long time (page 25)
05-45_PZiG Series(2)English 06.8.4 9:39 AM y [ W 13