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Maintenance
Rotating
Seal
Stationary
Seat
1419 1294
Figure 1
Rotating Seat will
If Gear Puller is used,
come off with
place jackscrew here.
Rotating Seat will come off
adapter/sealplate
with adapter/sealplate.
1420 1294
Figure 2
MAINTENANCE
Little or no maintenance to pump is required other than possible replace-
ment of shaft seal after a reasonable period of operation (see below).
Lubricate motor according to motor manufacturer's instructions. Periodic
greasing is required for most motors.
PUMP STORAGE
Drain pump to prevent freezing.
Keep motor dry and loosely covered. Do not wrap with plastic sheeting;
trapped moisture could cause corrosion or insulation deterioration.
NOTICE: A good rust inhibitor in the liquid end of cast iron pumps is rec-
ommended to prevent excessive corrosion.
PUMP START-UP AFTER STORAGE
Replace all drain plugs and close all drain valves in system.
Be sure all connections are tightly sealed.
After inital check is made, fill pump according to "Priming the Pump"
above.
SHAFT SEAL REPLACEMENT
NOTICE: The highly polished and lapped faces of the seal are easily
damaged. Follow instructions and handle the seal with care.
Spring
Hazardous
voltage
REMOVAL OF OLD SEAL
Refer to Figure 1 for Mechanical Seal parts identification.
1. Remove motor hold down bolts and bolts holding adapter/seal plate to
volute. Slide motor, adapter/seal plate and impeller backward to clear
volute.
2. Remove impeller screw and washer from end of shaft and slide
impeller off of shaft.
3. Unbolt adapter/seal plate from motor.
If Gear Puller is used,
place jackscrew here.
4. Use two screwdrivers (Figure 2) or bearing puller to carefully separate
motor from adapter/seal plate, bringing rotating half of seal off with
adapter/seal plate. Shaft sleeve may come off with seal.
5. Use hammer, if necessary, to drive shaft sleeve out of seal. Clean up
shaft sleeve with emery paper if necessary.
6. Place adapter/seal plate face down on bench and drive old stationary
half of seal out of adapter/seal plate by carefully tapping with screw-
driver and hammer (Figure 3).
7. Use a wire brush to thoroughly clean adapter/seal plate cavity. Be sure
all dust and grime are out of seal cavity before installing new seal.
Be sure unit is grounded and power
disconnected before attempting any
work on pump or motor.
6
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