Flowserve MPT - Manual (Page 19)

MPT USER INSTRUCTIONS ENGLISH 85392699 06-09
19 of 41
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5.2 Starting the pump
5.2.1 Start-up
Before initial start-up or start-up after a
prolonged period without operation, the rotating
element should be turned by hand to ensure it
rotates freely.
5.2.2 Priming plug
Remove priming plug [4610-3] from casing and
completely fill with water.
This operation is only necessary for the
initial start up. Pump will then remain primed.
5.2.3 Discharge line
When starting the pump, ensure that the discharge
line is empty. The use of valves in the discharge
line must be avoided to achieve correct priming.
If valves are to be fitted to the discharge
line, the specialized automatic air venting
equipment must be fitted to pump. Refer to
Flowserve.
5.2.4 Correct rotation
Priming accomplished, correct rotation established,
and with suction valve wide open, start the pump.
5.2.5 Check outlet pressure and flow.
5.2.6 Pressure
If NO pressure, or LOW pressure, STOP the pump.
Refer to Faults; Causes and Remedies chart
(Section 7) for fault diagnosis.
5.2.7 Outlet valve
Do not run the pump with the outlet valve (if
fitted) closed for a period longer than 30 seconds.
5.2.8 Check the pump unit for vibration or
overheating.
If the vibration and/or temperature are excessive,
STOP the pump. Refer to Faults; Causes and
Remedies chart (Section 7) for fault diagnosis.
5.3 Running
Vent the pump to enable all trapped air to
escape, taking due care with hot or hazardous
liquids. Under normal operating conditions, after
the pump has been fully primed and vented, it will
be unnecessary to re-vent or prime the pump.
5.3.1 Mechanical seals
5.3.1.1 Mechanical seals require no adjustment
5.3.1.2 Safeguard the inboard seal face
Before pumping dirty liquids, it is advisable, if
possible, to run the pump in using clean liquid to
safeguard the inboard seal face.
5.3.2 Stop/start frequency
Consult driver manual for maximum number of
starts per hour. STANDBY PUMPS SHOULD BE
RUN ALTERNATELY.
Any slight initial leakage will appear to stop when
the seal is run in. Seals will always have a slight
leakage in operation to lubricate the seal faces.
5.4 Stopping and shutdown
5.4.1 Close the outlet valve
If fitted, close the outlet valve but ensure that the
pump runs in this condition for no more than a few
seconds.
5.4.2 Stop the pump
5.4.3 Prolonged shutdowns
For prolonged shutdowns and especially
when ambient temperatures are likely to drop
below freezing point, close the suction valve and
drain the pump.