Item
Action
Frequency
Packing, packing
box
Inspect for
excessive leakage
First 150 hours of
operation, then
every 2000 hours of
operation or
quarterly
Packing, packing
box
Adjust gland and
replace packing
As necessary
Vibration
Check for change in
vibration
Annually
Bearings
Lubricate (grease)
•
Light Duty,
approximately
10 hour/week
•
Normal Duty,
approximately 8
hour/day
•
Severe Duty,
approximately
24 hour/day
•
Every 2000
hours or at least
once a year
•
Every 2000
hours or at least
every six
months
•
Monthly
Fasteners
Check for loose
fasteners
Annually
6
.3
Recommended spare parts
The list of recommended spare parts will depend on the following
factors:
•
supplier lead time
•
if the pump is used for normal or severe duty operation, and if a
backup pump is available for use.
A suggested list of spare parts for intermittent or no-critical
operation:
•
stuffing box packing (13)
•
set of shaft sleeves (14)
•
set of sleeve o-rings (14B)
•
set of casing rings (7)
•
set of adapter rings
•
gasket, casing (73A)
•
packing gland
•
studs or gland bolts.
6
.4
Consumables
The following items are normally used in the maintenance of
pumping equipment:
•
cleaning materials
•
touch-up coating
•
hand tools
•
measuring equipment (feeler gauges, dial indicator, etc.).
Some items may vary depending on the type of unit.
6
.5
Tightening torques
Proper tightening of fasteners is very important. The torque values
depend on the size and grade of the fasteners used. The values in
the table below apply to non-lubricated parts:
Fastener size
Torque
3/8
30 ft-lbs
7/16
50 ft-lbs
1/2
75 ft-lbs
5/8
155 ft-lbs
When assembling a pump, cross-tighten the screws in order to
avoid misalignment, binding and leakage. The torque values shown
are for clean lubricated threads and gasket joints.
6
.6
Dismantling the pump
WARNING
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product. Starting the motor during pump
removal could damage pump and may cause personal
injury.
Drain the pump and isolate pipes before dismantling the
pump.
WARNING
Chemical hazard
Death or serious personal injury
‐
There may be occasions when a part, such as the
impeller, has either been shrunk-fit onto the pump shaft
or has become difficult to remove due to products that
are corrosive in nature. If you must heat to remove the
part, it must be applied with great care. Before
applying heat, ensure that any residual hazardous
liquids trapped between the two parts are completely
drained out to prevent an explosion or emission of
toxic vapor. The impeller design varies and so does the
amount of heat and the duration of heat applied
required to loosen the impeller. Contact Peerless
Pump for help with the removal of impellers.
DANGER
Electric shock
Death or serious personal injury
‐
Before opening conduit box of electric motor, make
sure that the current to the motor is shut off. An
electrical shock from contact with live motor leads can
be fatal.
Before starting disassembly of the pump, we recommend obtaining
a set of spare parts as shown in section 8.2 Recommended spare
parts. Peerless Pump does not recommend the reuse of gaskets,
O-rings, and packing rings.
DANGER
Electric shock
Death or serious personal injury
‐
Disconnect power to the pump driver before starting
any repairs.
1.
Shut down the pump.
2.
Clear a large area adjacent to the pump as a storage space for
pump parts as they are dismantled.
3.
Open the disconnect switch to cut off power to the motor.
Temporarily tie switch open and attach note: DO NOT CLOSE
SWITCH - PUMP REPAIR IN PROCESS.
4.
Close valves in inlet and outlet lines.
5.
Disconnect the motor leads and carefully mark them so they
can be reconnected in the exact same order.
1
6
English (US)