Teikoku USA | Chempump
Instruction Manual HE-10677-P (1018)
10
3.3 Starting Procedure
Caution!
Do not start or operate pump unless fully primed and
liquid full.
Caution!
Do not continuously cavitate the pump.
Attention!
The pump should not be allowed to run for more than one
minute with the discharge valve fully closed.
Attention!
Wait a minimum of five minutes between starts.
After priming, venting, and checking the direction of rotation, put
the pump in operation as follows:
1. Set the valve in the suction line to 100% open.
2. Set the valve in the discharge line to 20% open.
3. Set the valve in the reverse circulation line valve to 100% open.
4. Set the valve in the discharge vent line to 100% open.
5. Set the valve in the by-pass line at required percent. To accu-
rately set the valve position in the by-pass line for the correct
minimum flow amount, the valve in the discharge line must
be fully closed.
6. Start the pump. Pump should operate with very low noise and
vibrations. Excessive or abnormal noise or vibrations should
be corrected immediately.
7. When the pump is running at full speed, slowly open the
valve in the discharge line to the desired setting.
8. Once pump is operational, check the reading of the TRG me-
ter. Record initial reading for comparison to future readings.
Check indication of TRG meter. See
9. If the suction and discharge lines are completely filled with
system liquid and adequate suction head is available, the
pump can be started without closing the discharge valve.
During any start up sequence, caution must be exercised not
to exceed full load ampere rating indicated on the nameplate.
10. If the unit has not been run for a period of two weeks or
more, the following inspections should precede its operation:
A. Check terminal box for moisture.
B. Upon starting, check for excessive noise, vibration, erratic
speeds or excessive amp draw.
Caution!
If the pump appears to be air bound as a result of the
unit not being properly primed, do not continue opera-
tion. Locate and correct the conditions that prevent proper
priming before attempting to start the unit.
3.4 Operation Details
TRG meter should be checked periodically during operation. If
the initial reading (TRG) was not recorded, then the color coding
system shown in
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 op-
eration. Pressure should be stable in a non-variable closed loop
although 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
capacity. The discharge pressure gauge will show large fluctua-
tions if this occurs.
If any abnormal noise or vibration is observed, stop the pump and
check for possible causes, see
3.5 Shutdown Procedure
Shutdown as follows:
1. Close the valve in the discharge line.
Attention!
The pump should not be allowed to run for more than
one minute with the discharge valve fully closed.
2. Stop the pump (de-energize the motor).
3. Close reverse circulation, by-pass and suction valves if pump is
to be removed from service.
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.
