Product Manual

7Rev. D 921422-18
FIGURE 16
NOTE: Switch shown is for models M-150S and M-180S.
Model M-240S switch does not require a jumper wire
and circuit breaker.
• Remove the red wires from the terminals on the back
of the switch.
• Remove the remaining wire on motor protector then
remove the motor protector from switch cavity.
• Install new motor protector by reversing above pro-
cedure.
NOTE: Make sure the O-ring is seated properly before
tightening the switch coverplate.
Replace Switch Lever or
Switch Lever Shaft O-Ring
• Turn off the pump and disconnect from power.
• Remove the switch coverplate from the pump hous-
ing.
• Remove the screw connecting the switch cam to the
coverplate.
• Remove the cam and switch lever.
• Replace the switch lever or switch lever shaft O-ring
as needed.
• Reassemble by reversing the above procedure. Make
sure the O-ring is seated properly before tightening
the coverplate.
Replace Motor Shaft Seal
• Turn the pump OFF and disconnect from power.
• Remove the gear coverplate, gears, and drive key
as described in Gear Replacement instructions.
• Remove the motor from the pump housing.
• Remove the motor shaft seal by prying out with a
small screwdriver. (Figure 17)
Back of Pump
FIGURE 17
• Lubricate the gear shaft with WD-40
®
or a similar
penetrating oil.
• Press a new motor shaft seal evenly in the pump hous-
ing until seated. Lubricate the seal with a lightweight
motor oil.
• Gently slide the shaft through the seal until the motor
is ush against the pump housing.
• Tighten the motor to the pump housing. Check for
proper installation by working a .0015 feeler gauge
around the motor ange. The gauge should not t
between the ange and the housing.
• Install the gears and drive key as described in Gear
Replacement instructions.
Replace Motor
In order to preserve the UL Listing or CSA Certication
for pump safety, return the entire pump to the factory
for motor repair or replacement. For products serviced
outside the factory, the UL and CSA nameplates must be
defaced to indicate the equipment may no longer meet
the requirements for UL Listing or CSA Certication.
This does not apply to products serviced outside the
factory under the UL program for Rebuilt Motors for Use
in Hazardous Locations and the CSA rebuild program.