Flowserve MSP - Manual (Page 18)

MSP USER INSTRUCTIONS ENGLISH - 07/14
Page 18 of 35
5.3 Impeller clearance
No axial adjustment of the rotor is necessary.
5.4 Direction of rotation
The sense of rotation of the
pump is clockwise (CW); looking from the coupling to
the shaft end of the pump.
The rotation of the driver shall be checked at
minimum speed.
5.5 Guarding
Be sure that all guards are mounted correctly prior to
start up.
5.6 Priming and auxiliary supplies
The pump must be completely primed prior to start
up.
a) The pump casing must be vented via the vent
connection [V] in the seal gland.
b) Auxiliary systems, e.g. barrier /buffer fluid
systems, cooling circuits, shall be filled according
to the user instructions.
5.7 Starting the pump
a) Start the driver according to the specification.
(Refer to driver and VFD IOM).
Usually the initial start up is done by
"hand". Control via the VFD panel or remote
control. It is good practice to program a time ramp
for soft start. (Use 10s to speed up the unit
completely) After checking the sense of rotation
and several operation parameters like suction and
discharge pressure, speed, mechanical seal
operation, temperatures, the unit can be switched
to automatic mode (if a pump control system is
installed).
b) Check the discharge and suction pressure gauge
to verify the pumps delivered head. Open the
discharge valve slowly, until the pump reaches the
specified operation point. The pump must operate
smoothly, and the vibration must be below 5 mm/s
(0.2 in./sec) (API 610 vibration limits).
The discharge valve must be opened
within 30 sec. after start up. Longer operation
against closed discharge valve will damage the
pump. If a minimum flow valve is installed, take
pressure gauge readings to verify the correct
operation.
If the backpressure of the discharge
pipe is sufficient, pumps can be started against
open valve.
Ensure that your driver is capable deliver
the higher torque required by starting against
open valve.
To prevent the pump from reverse rotation
after shut down, the installation of a check valve
is recommended.
Although the pump is not affected by reverse
rotation because of spezial couppling design , it
can be an issue with the driver.
Check the discharge and suction pressure gauge
to verify the pumps delivered head.
The pump must operate smoothly, and the
vibration must be below 5 mm/s (0.2 in./sec) (API
610 vibration limits).
If a minimum flow valve is installed, take pressure
gauge readings to verify the correct operation.
c) Check the pipe system against any leakage.
d) Check the mechanical seal against any leakage.
Right after start up a minor leakage
of the mechanical seal is quite normal. Normally
this leakage disappears after few minutes of
operation.
Due to the coupling design, motor solo run
test is strictly forbidden.
5.8 Operation
a) Verify that the pump is operating within the
specified limits, min/max flow, pressure,
temperature, vibration, power
b) The bearing housing temperature shall not exceed
105 °C (221 °F) and is observed by an integrated
PT100. If the bearing temperatures reaches 105 °C
(221 °F) the VFD control gives an alarm and shuts
down the unit.
Alarm or shut down are
selectable options and must be verified.
c) From time to time check the pump shaft seal.
Leakage of 10 - 20 drops per hour is also with a
mechanical shaft seal unavoidable.
d) Observe the power consumption of the pump to
detect excessive wear.
5.9 Stopping and Shutdown
a) Close the outlet valve, but ensure that the pump
runs in this condition for no more than a few
seconds.