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MAINTENANCE
SHAFT SEAL REPLACEMENT
1.
Remove plugs in motor housing and in seal housing (for
double seal units) and drain oil.
2.
Remove four bolts holding the volute case and bump with a
plastic hammer to loosen and remove case.
3.
Hold impeller and unscrew impeller locking screw. Turn
counterclockwise to loosen.
4.
Pry off seal bellows and ceramic seat. Break seats if
necessary to get out since they must be replaced with new
parts.
5.
NEVER USE OLD SEAL PARTS - USE ONLY COMPLETELY
NEW SEALS. (Do not use seal spring retainer plate on single
seal pump or lower seal of double seal pump.)
6.
For single seal pumps or if only replacing the lower seal
of a double seal pump, it is not necessary to disassemble
further. On a double seal pump, it is not necessary to drain
oil out of the motor housing, just the seal housing.
7.
On a double seal pump, to remove the upper seal, remove
four bolts holding the bottom plate and remove bottom
plate.
8.
Remove snap ring with snap ring pliers. Pry off upper seal
bellows and ceramic seat.
9.
If no water has entered motor housing (check winding with
ohmmeter or megger) wipe seal chambers thoroughly and
replace seals. (Use seal retainer plate on upper seal only; do
not use on lower seal.) Clean seal faces and use light on face
before installing bellows part of seal.
GREEN
115V ., 208V. OR 230 V.
1 PHASE, P .S.C .
GREEN
GROUND
10
208/230V. - 3 PHAS E
GREEN
BLACK
WHITE
RED
GREEN
BLACK
BLACK
WHITE
BLACK
BLACK
WHITE
YELLOW
575V. - 3 PHASE
BROWN
SEAL LEA K
DETECTOR
TYP. FOR 1 & 3Ø
(DOUBLE SEAL ON LY)
BLACK
BLACK
WHITE
WHITE
GREEN
RED
RED
BLACK
WHITE
GROUND
GREEN
RED
BLACK
460V. - 3 PHAS E
BLACK
WHITE
10. Check HUVA cup seal in volute case inlet. If worn, replace.
11.
Be sure tetraseal gasket is in position (replace if worn) and
reassemble.
12. Replace oil in motor housing and seal chamber. Use only
Myers submersible oil.
13. Be sure pump turns freely before connecting to power. After
connecting, check for proper rotation noted under
Stator Replacement.
WIRING DIAGRAM
GREEN
BLACK
WHITE
GREEN
BLACK
WHITE
BROWN
115V ., 208V. OR 230 V.
1 PHASE, P .S.C .
BLACK
WHITE
GREEN
RED
GROUND
GROUND
208/230V. - 3 PHAS E
3 PHASE DUAL VOLTAGE WINDING
Voltage
Black
White
208 & 230
1 & 7
2 & 8
460
1
BLACK
WHITE
RED
BLACK
BLACK
YELLOW
575V. - 3 PHASE
SEAL LEA K
DETECTOR
TYP. FOR 1 & 3Ø
(DOUBLE SEAL ON LY)
BLACK
WHITE
GREEN
RED
460V. - 3 PHAS E
Leads
Red
Together
3 & 9
4 & 5 & 6
2
3
4 & 7, 5 & 8, 6 & 9
23822A278 (02-13-20)
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