Oil Fill - Pentair MYERS MSKHS Serie Installation Et Manuel De L'opérateur

Maintenance
11. Turn impeller (16). It should turn freely with no drag.
12. Secure motor housing to volute case with three hex
head screws (18).
13. Reach in the eye of the volute (11) and turn impeller
(16) again. It should turn freely with no drag.
14. If it is necessary to replace the power cord
assembly (1) on a 3ø pump, obtain a new power
cord assembly. Referring to wiring diagrams in
this manual, secure wires together with wire nuts
(2) only.
Do not tape connections as the hot oil will
deteriorate the tape and cause motor failure.
Tuck wires up into the housing to prevent rubbing
on the rotor and secure power cord assembly to the
motor housing (3).
To replace the power cord (1) on a 1ø pump, coat
the cord grip threads with PTFE thread sealant tape
and screw the new power cord assembly (1) into the
motor housing (3). Place the ground screw through
the terminal of the green ground wire and tighten
into the top of the motor housing (4). Tighten the
knurled nut with pliers or a pipe wrench.
Do not tape connections as the hot oil will
deteriorate the tape and cause motor failure.
15. Before filling the motor housing with oil, a seal leak
test should be performed. Apply 7 to 8 pounds of air
pressure in the 1/4" NPT tap (24) on the top of the
motor cover and seal chamber.
NOTICE Too much pressure will damage the seal.
Seal would have to be replaced.
Then submerge the pump in water and check for
leaks. If a leak occurs, isolate where it is coming
from and correct the problem by replacing the
failed part.
Hydromatic pumps have a small air vent hole in
the impeller cavity to let out trapped air. If this hole
becomes plugged, pump may air lock. To break the
air lock, use a small screwdriver to clear hole in the
impeller cavity.
As a secondary precaution in installations of
this type, an 1⁄8" hole should be drilled in the
discharge pipe just above the volute. The check
valve should be at least 12 inches above pump
discharge. Do not put check valve directly into pump
discharge opening.
NOTICE In sumps where the pump is operating
daily, air locking rarely occurs.

Oil fill

1. After seal leak test is satisfactory, remove unit from
water and wipe or blow off any excess water.
2. Do not put oil in motor with any water present in
motor cavity.
3. Use refined paraffinic transformer oil, Shellflex™
2210 or equivalent.
4. Slowly fill oil to 1/8" over windings in motor housing
through opening (24). Use an oil fill tube that will go
into holes so that air can escape. Replace plug (24).
NOTICE Do not fill the motor housing completely –
allow air space for expansion.
5. Connect power cord wires to terminals in panel, or
connect power source, and check pump running.
Motor should run smoothly and be free of vibration.
Pump is ready for operation.
8