Gorman-Rupp Pumps SE1 1/2A3 115V 1P 1483930 and up User Manual

Page 37

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SE SERIES

OM−06488

MAINTENANCE AND REPAIR

PAGE E − 13

When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.

Rotor Installation

With the stator (53) installed and the motor housing
(10) upright, carefully ease the rotor, switch actua-
tor and assembled bearings (44 and 55) into the
motor housing and through the stator until the
bearing (55) seats squarely into the motor housing
bore.

Wrap the impeller end of the shaft in a clean cloth to
protect it during installation of the head and power
cable.

Head And Power Cable Installation

The electrical power used to operate
this pump is high enough to cause inju-
ry or death. If the pump power cable is
wired into an optional control box make
certain the switch is in the OFF or STOP
position and locked out, or that the pow-
er supply to the control box has been
otherwise cut off and locked out. Tag
electrical circuits to prevent accidental
start-up.

Clean the exterior of the power cable with warm
water and mild detergent. Check for obvious physi-
cal damage. Check the cable for continuity and in-
sulation resistance (see Electrical Testing in
TROUBLESHOOTING). Do not attempt repairs
except to cut off either end of the cable; splicing is
not recommended. Reinstall any wire tags or ter-
minals which may have been removed.

Never attempt to alter the length or re-
pair any power cable with a splice. The
pump motor and cable must be com-
pletely waterproof. Injury or death may
result from alterations.

Inspect the mounting plate grommet (21) and re-
place as required. Press the grommet into the
mounting plate (18). Be sure that it seats on both
sides of the plate.

Install the centrifugal switch contact (14) on the
mounting plate with the hardware (15, 16 and 17).

Secure the blue stator wire terminals to the centrif-
ugal switch contact with the hardware (12 and 13)
as shown in the wiring diagram, Figure B-6.

Secure the overload protector (45) to the mounting
plate with the hardware (46 and 47).

Feed the white and red stator leads through the
grommet.

Position the bearing shim (43) on the upper bear-
ing (44). Carefully press the mounting plate bore
over the bearing shim and upper bearing. Make
certain that the bearing seats squarely into the
bore.

As shown in the wiring diagram, Figure B-6, secure
the white stator lead to the overload protector.

Install the cable lock (28) and lock plate (30) on the
power cable (29). Lubricate the bore of the head
(27) and install the power cable through the bore.
Secure the lock plate to the head (27) using the
hardware (36 and 37).

Using the hardware (31 and 32) secure the handle
(34) to the head.

Replace the head gasket (48).

Connect the male and female sleeves (38 and 40)
over the plugs and receptacles. Install the plugs
(39) in the receptacles (41) as shown in the wiring
diagram, Figure B−6.

Connect the green ground wire (22) to the mount-
ing plate using the hardware (24, 25 and 26). Make

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