Flowserve APKD - Manual (Page 31)

APKD DOUBLE-CASE, DOUBLE-SUCTION USER INSTRUCTIONS 26999903 07-13
Page 31 of 55 flowserve.com
Machinery to be protected at all times by Flowserve
provided safety guards or per applicable local or
national standard. Compliance is mandatory for
some regions of the world and in explosive
environments.
5.6 Priming and auxiliary supplies
Ensure electrical, hydraulic,
pneumatic, sealant and lubrication systems (as
applicable) are connected and operational.
Ensure the inlet pipe and pump
casing are completely full of liquid before starting
continuous duty operation.
5.7 Starting the pump
Ensure flushing and/or cooling/
heating liquid supplies are turned ON before
starting the pump.
a) CLOSE the outlet valve (or partially open in
some cases).
b) OPEN all inlet valve.
c) Prime the pump & check lubrication system in
operation (check the liquid level).
d) Ensure all vent connections are closed
before starting.
e) Check the motor connections.
f) Do not run the pump with the
outlet valve closed for a period longer than 30
seconds.
5.7.1 Pre-starting
checks
Before starting the pump the following checks
should be made.
a) Rotate the pump shaft by hand to make sure
the pump rotates freely and the impellers are
correctly positioned.
b) Has the electric motor been properly lubricated
in accordance with the instructions furnished
with the driver?
c) Has the electric motor been checked for proper
rotation? If not, the pump must be
disconnected from the driver at the coupling
before checking. The electric motor must rotate
counter-clockwise when looking down on the
top of the driver.
d) Check all connections to the driver and control.
Do not overfill the grease cavity. Over greasing
can lead to failure of the thrust bearing.
e) Check that all piping connections are tight.
f) Check all foundation bolts for tightness.
g) Check all bolting connections for tightness
(coupling bolts, mechanical seal gland bolts,
driver bolts etc).
h) Make sure the mechanical seal is properly
adjusted and locked into place. Ensure that all
seal spacers are in the running position prior to
operation.
i) All guards must be secured in position prior to
pump startup to prevent possible contact with
rotating parts.
To ensure proper alignment three items are
very important during installation and they are:

All machined mating surfaces (such as the
mating faces of the pump and motor) must
be clean and free from burrs and nicks.These
surfaces should be cleaned thoroughly with a
scraper, wire brush and emery cloth if
necessary and all nicks or burrs removed
with a fine file

Exterior strain must not be transmitted to the
pump. The most common cause of trouble in
this respect is forcing the piping to mate with
the pump. It is recommended that flexible
connectors be installed in the piping adjacent
to the pump.

All threads should be checked for damage
and repaired if necessary. If filing is
necessary, remove the part from the pump if
possible, or arrange to catch all the filings so
they do not fall onto other parts of the pump.
Clean all threads with a wire brush and
approved cleaning solvent, ends of shafts
must be cleaned and any burrs removed
since alignment depends on the shaft ends
butting squarely. Lubricate all threaded
connections with a suitable approved thread
lubricant (an approved anti-galling compound
should be used on stainless mating threads)
j) On pumps equipped with mechanical seals,
clean fluid should be put into the seal chamber.
With pumps under suction pressure, this can be
accomplished by bleeding all air and vapor out
of the seal chamber and allowing the fluid to
enter. With pumps not under suction pressure,
the seal chamber should be flushed liberally with
clean fluid to provide initial lubrication. Make
sure the mechanical seal is properly adjusted
and locked into place. Insure that all seal
spacers are removed prior to operation.
5.7.1.1
Typical safety guards