Flowserve ME - Manual (Page 22)

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13
Page 22 of 36 flowserve.com
5.3.1 Priming of a flooded pump
a) Close the discharge valve; fill the pump by
opening the suction valve. Let air escape by
removing the plug located on the piping.
b) The discharge pipe is headed and there is a by-
pass valve on the check valve, open slightly the
discharge valve and the by-pass of the check
valve.
c) When the pump is totally free of air bubbles,
replace the plugs.
Air escape
Priming of a flooded suction pump
5.3.2 Priming of a sump suction pump
* With foot valve:
a) Fill suction pipe and casing with liquid from an
independent source (pressure 1 to 2 bars or 15
to 30 psi).
b) Let air escape by removing the plugs located on
the piping.
c) When the pump is totally free of air bubbles,
replace the plugs.
E X TE RN A L S O U R CE
A ir escape
Priming of a sump suction
configuration with foot valve
*Without foot valve:
Priming may be accomplished by means of venting
system.
Foot valves are not recommended when
the pumped liquid has suspended solid particles.
They may lodge between foot valve seat and
shutter.
5.4 Starting the pump
5.4.1 Bring controls and preparation before the
first starting and after each service call
Necessarily:
a) Check the tightening of the different plugs.
b) Check that the gland lightly tightens the packing
rings.
c) Risk of seal ring overheating.
d) Check the direction of rotation of the motor.
Refer to the rotation arrow of the pump.
e) Install all protection systems and more
particularly the coupling guard and the shield
grid (reference [9331]) of the bearing.
f) Open all suction valves (if existing).
g) Close the outlet valve and the bypass valve.
h) Ensure inlet pipe and pump casing are
completely full of liquid.
5.4.2 First pump start-up
Suction valves must be fully open
when pump is running. Never run the pump dry, it
will cause damage.
a) Start motor and check outlet pressure.If
pressure is satisfactory, slowly OPEN outlet
valve.
c) Do not run the pump with the outlet valve closed
for a period longer than 30 seconds.
d) If NO pressure, or LOW pressure, STOP the
pump. Refer to faultfinding chart for fault
diagnosis.
The pump should run smoothly and without
vibration.
The pump must never run at a capacity of less than
40 % of that at the best efficiency.
Never remove a plug when the pump is
running.