Goulds Pumps JC - IOM - Manual (Page 21)

3. Variable speed drivers should be brought to rated
speed as quickly as possible
4. Variable speed drivers should not be adjusted or
checked for speed governor or over speed trip settings
while coupled to the pump at initial start up. If settings
have not been verified, uncouple the unit and refer to
driver manufacturer's instructions for assistance.
Pumpage temperatures in excess of 200°F will require
warmup of pump prior to operation. Circulate a small
amount of pumpage through the pump until the casing
temperature is within 100°F of the pumpage temperature
and evenly heated.
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CAUTION
When starting the pump, immediately observe pressure
gauges. If discharge pressure is not quickly attained,
stop driver, reprime and attempt to restart.
BEARING LUBRICATION
Bearings must have adequate lubrication. Engage external
lubrication system. Consult “BEARING SECTION” of
these instructions for specific information.
SHAFT ROTATION
The pump shaft must turn without any binding or rubbing.
By manually turning the rotating element, only the uniform
frictional drag of the bearings and the stuffing box should
be sensed.
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CAUTION
Serious damage may result if the pump is run in the
wrong direction
CORRECT ROTATION OF THE
DRIVER
The direction of rotation of the driver must be checked
before it can be coupled with the pump. The direction of
rotation of the pump is indicated in a prominent location.
For pumps with impellers threaded on the shaft, reverse
rotation would back the shaft from the impeller thread.
Considerable damage may occur.
"
Lock out driver power to prevent electric shock,
accidental start-up and physical injury.
!
When installing in a potentially explosive
environment, ensure that the motor is properly
certified.
LUBRICATING LINES TO STUFFING
BOX
Lubricating liquid must be flowing to the stuffing box
before the pump is started. Both mechanical seals and
packing require lubrication for continuous service.
PRIMING
The pump must be completely primed before operation.
!
Pumps must be fully primed at all times during
operation.
WATER HAMMER
Water hammer is a high pressure surge within a closed pipe
system, created by rapid change in the flow rate. Changes
in the flow rate occur when there are sudden changes in
pump speed. The most common cause is the sudden
opening or closing of a valve or flow control device.
Extensive damage to the pump and pipeline is a result of
water hammer.
FREEZING
If the pump is exposed to below freezing temperatures, the
liquid should be drained during idle periods.
JC IOM 5/08
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