Goulds Pumps 3498 - IOM - Manual (Page 34)

OPERATIONAL CHECKLIST
1. Driver/Pump Rotation
Check rotation each time the motor leads have been
disconnected. Be sure that the driver operates in the
direction indicated by the arrow on the pump casing.
Rough operation and extreme vibration can result if the
pump is operated in the wrong direction.
2. Stuffing Box Adjustment
Make stuffing box packing gland and lubrication
adjustments.
3. Flow
An accurate measurement of flow rate (volume/time) is
difficult in the field. Venturi meters, flow nozzles,
orifice plates, or timing the draw down in the wet well
are all possible methods. Record any reading for future
reference.
4. Pressure
Check and record both suction and discharge pressure
gauge readings for future reference. Also, record
voltage, amperage per phase, kilowatts if an indicating
watt meter is available, and pump speed.
5. Temperature
!
Do not insulate bearing housings as this can result
in excess heat generation, sparks, and premature
failure.
Check and record bearing temperatures using a
thermometer. Temperature should not exceed 180° F.
NOTE: Just because bearing housings are too hot to
touch does not mean that they are running too hot
for proper operation.
6. Vibration and Sound
The acceptable vibration level of a centrifugal pump
depends on the rigidity of the pump and the supporting
structure. Recommended values for vibration can vary
depending on the operating characteristics and the
structure. Refer to the Centrifugal Pump section of the
Hydraulic Institute Standards for a complete
description and charts on various pumps.
Field sound levels are difficult to measure because of
background noise from piping, valves, drivers, gears,
etc. Follow recommendations in the Hydraulic
Institute Standards.
SHUTDOWN
The following steps will take care of most normal
shutdowns of the pump, i.e. maintenance. Make any further
adjustments of process piping, valves, etc., as required. If
the pump is to be removed from service for an extended
period of time, refer to the sections on storage and freeze
protection.
1. Shut down the driver. (Consult manufacturer’s
instructions for special operations.)
2. Close suction and discharge valves.
3. Close seal liquid valves. (If pumped liquid is dirty, or
if leakage is to be prevented, these lines should always
be left open, except when the pump is completely
drained.)
4. Open drain valves as required.
FREEZE PROTECTION
Pumps that are shut down during freezing conditions
should be protected by one of the following methods.
1. Drain the pump; remove all liquid from the casing.
2. Keep fluid moving in the pump and insulate or heat the
pump to prevent freezing.
$
CAUTION
If heat is used to keep the pump from freezing, do not
let the temperature rise above 150° F.
3498 IOM 12/04
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