Teikoku USA | Chempump
Instruction Manual HE-12270 (1219)
14
3.4 Operation Details
The TRG meter should be checked periodically during operation.
If the initial reading (TRG) was not recorded, then the color cod-
ing system shown in
Figure 2-1
may be used to determine bearing
changing intervals.
Hazard!
Do not operate if TRG meter condition is RED.
Discharge pressure should be checked frequently during opera-
tion. Pressure should be stable in a non-variable closed loop al-
though the discharge pressure gauge needle may show small
fluctuations.
Check motor amps at normal operations. Verify motor amps
are within the expected range. Pump should never be operating
above the rated full load amps listed on the name tag.
In some cases, the liquid supply may contain an excessive amount
of air or gas, which will tend to separate from the liquid and re-
main in the passages of the pump. This results in the pump losing
its prime and becoming air bound with a marked reduction in ca-
pacity. The discharge pressure gauge will show large fluctuations
if this occurs. Stop the pump and vent per
Section 3.2.3.
If any abnormal noise or vibration is observed, stop the pump and
check for possible causes, see
Appx. E. Troubleshooting
3.5 Shutdown Procedure
Shutdown as follows:
1. Stop the pump (de-energize the motor).
2. Open start vent valve.
3. If pump is to be removed from service shut discharge, suction,
and start vent valves. Immediately remove refrigerant from
pump.
Attention!
If the pump is to be shut down for a long period of
time or if there is danger of freezing, after stopping
the pump, shut all valves, and drain the entire pump
and connected piping.
