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Section 6.....................................................Commissioning and Operation
f) Check drive coupling for
i. Correct Alignment
ii. The presence of preload caused by misalignment
iii. All fasteners are tight
iv. Coupling has been fitted correctly
v. Coupling guard is correctly fitted and firm.
vi. Check that keys are secured in the correct position and locked down
vii. Turn shaft by hand and check for running clearance
g) For oil lubricated Pumps, fill the bearing housing with the appropriate oil to the correct level.
Bearings must receive a small amount of oil prior to starting to ensure adequate lubrication at start
up. See section 3 for details.
h) For Grease lubricated pumps, fill about 15 gms for grease to ensure adequate lubrication at start
up. See section 3 for details.
i) Install suction strainer if required.
j) Check that the Electrical connection is completed and signed off
i. Have the safety lock out device removed.
ii. Bump start pump to check for correct orientation. If rotation is not correct refer to motor manual for
appropriate connections to change rotation. Take appropriate precaution before working on the
motor.
k) If a Mechanical Seal is fitted, check
i. Quench or Flush is operational before startup
ii. Check that seal is located correctly
iii. Check that seal is locked to the shaft
iv. Remove setting Tabs
The unit must not be operated unless coupling guard is securely and completely bolted
in place. Failure to observe the warning could result in injury to operating personnel
3. PRIMING
No pumping action occurs unless the pump casing is filled with liquid. Pump casing and suction pipe
must therefore be completely filled with the liquid and thus all air removed before the pump is started.
Several different priming methods can be used depending on the kind of installation and
service involved.
(a) Liquid level above pump level Pump is set below liquid level of source of supply so that liquid
always flows to pump under positive head.
(b) Priming with foot valve
i. When pump is installed on suction lift with foot valve at the end of suction line, fill pump with
water from some outside source till all air is expelled and water flows through air vent.
ISO PRO Centrifugal Pump
25
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