Ingersoll-Rand P237A1-EU, Maintenance Information

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Form 16575458-Edition 1 3
3. Using a water seal cap spanner wrench, install the Water Seal Cap
Assembly (37). Tighten the Water Seal Cap 20 to 25 ft-lb
(27 to 34 Nm) torque.
4. Grasp the large diameter end of the Rotor Shaft (32) in leather-covered
or copper-covered vise jaws so that the small diameter end is upward.
5. Slide the Front End Plate (30), bearing recess first, down over the
Rotor Shaft.
6. Place the Rotor Key (28) in the keyslot in the Rotor Shaft.
7. Slide the Rotor (27) down over the Rotor Shaft, engaging the Rotor Key.
8. Place a Vane (29) in each vane slot.
9. Place the Cylinder (24), small dowel first, down over the Rotor so that
the small dowel engages the alignment hole in the Front End Plate.
10. Place the Rear End Plate (23) over the Rotor Shaft and against the
Cylinder, so that it engages the Cylinder Dowel (26).
11. Check the outside diameter and large inside diameter of the Rotor
Bearing Seal (19) for wear. If the outside diameter of the hub is worn to
1.76" (29.881 mm) or smaller, and/or the large inside diameter is worn
to 0.910" (23.122 mm) or larger, install a new Rotor Bearing Seal.
NOTICE
Take all measurements 90° to the left of the dowel hole when
facing the hub side of the Seal.
Install the Rotor Bearing Seal (19), flat side first, so that the Cylinder
Dowel engages the alignment hole in Bearing Seal.
12. Press the Rear Rotor Bearing (19) onto the hub of the Controller (18).
13. Press the Controller Assembly into the hub side of the Rotor Bearing
Cage (21) until it is within 1/8" (3 mm) of seating.
NOTICE
The Rotor Shaft has a left-hand thread; turn counterclockwise to
install.
14. Using the No. 99V60-950 Controller Wrench, install the assembled
Controller, Bearing and Cage on the Rotor Shaft.
NOTICE
Tighten the Controller to 8 to 10 ft-lb (10.8 to 13.5 Nm) torque. Do
not exceed 10 ft-lb (13.5 Nm) torque. The Controller may be
damaged if this torque is exceeded.
NOTICE
The Controller Retaining Nut has a right-hand thread.
15. Install the Controller Retaining Nut (20). Tighten the Nut to 6 to 9 in-lb
(0.67 to 1.07 Nm) torque.
16. Remove the assembled motor from the vise.
17. Slide the upper Rotor Shaft Bearing (33) on the large diameter end of
the Rotor Shaft until it seats against the shoulder on the Shaft.
18. Slide the Bearing Spacer (34) on the Rotor Shaft until it contacts the
Bearing.
19. Stand the Housing (14) upright on the workbench.
20. Place the two Motor Clamp Washers (31), concave side first, in the
bottom of the housing bore, so that the outer rim of the leading
Washer contacts the Housing.
21. Install the assembled motor shaft end first into the Housing until the
Front end Plate seats against the Motor Clamp Washers.
22. Place the Rear End Plate Gasket (22) on the face of the Rear Rotor
Bearing Cage, aligning the dowel hole in the Gasket with the Cylinder
Dowel.
23. If the Oiler Body Assembly (2) was disassembled, install two new
Oiler Felts (4) in the Oiler Body, and retain them with the Oiler
Adjusting Screw (5). Run the Screw in until its trailing face is flush
with the face of the Oiler Body.
24. Install the Oiler Body O-Rings (3) and (6) in their respective grooves
on the Oiler Body.
25. Install the Oiler Body Assembly in the Backhead and retain it with the
Oiler Body Retainer (7).
26. Place the Housing Seal (17) on the rim of the Housing.
27. Place the Backhead (1) on the Housing, making certain the Cylinder
Dowel engages the dowel hole in the Backhead. Install the Backhead
Cap Screws (13) and Lock Washers (12). Tighten them to 20 ft-lb
(27 Nm) torque.
28. Lay the Pump on its side and slide the Impeller (41), hub side first, on
the splined end of the Rotor Shaft. Manually rotate the Impeller. If it rubs
against the Housing, install an Impeller Shim (40) or Shims as required
to provide running clearance between the Impeller and Housing.
29. Install the Impeller Retaining Washer (42) and Screw (43). Tighten the
Impeller Retaining Screw to 12 to 15 ft-lb (16.2 to 20.3 Nm) torque.
30. For the most efficient operation of the Pump, particularly against high
heads, it is necessary that the clearance between the Impeller and
Impeller Cover (45) be regulated at .010". Place the Impeller Cover
on the base of the Housing, using the required Impeller Cover
Shim (44) or Shims to obtain the desired clearance.
31. Place the Inlet (46) against the Impeller Cover and install the Impeller
Cover Cap Screws (48) and Lock Washers (47). Tighten the Cap
Screws to 9 to 12 ft-lb (12.2 to 16.2 Nm) torque.
32. Inject 10 or 15 strokes of Ingersoll-Rand No. 80 Water Pump
Grease into the Grease Fitting (15) on the Motor Housing (14). Use
the No. P25-228 Grease Gun.
Troubleshooting Guide
Related Documentation
For additional information refer to:
Sump Pumps Product Safety Information Manual Form 16576597,
Sump Pumps Product Information Manual Form 04585154,
Sump Pumps Parts List Manual Form 16574832.
Manuals can be downloaded from www.irtools.com
Trouble Probable Cause Solution
Low power or low free
speed Low air pressure at the Inlet Check the air pressure at the Inlet. The Pressure must not exceed 90 psig (6.2 bar/620 kPa).
Plugged Inlet Bushing Screen or
Air Strainer Screen Clean the Screen in a clean, suitable, cleaning solution. If it cannot be cleaned, replace it.
WARNING
Never operate a Sump Pump without an Inlet Screen. Ingestion of dirt into the
Sump Pump can, in some cases, cause an unsafe condition.
Worn or broken Vanes Replace the complete set of Vanes.
Worn or broken Cylinder Replace the Cylinder if it is worn or broken or if the bore is scored or wavy.
Improper lubrication or dirt
build-up in the motor. Lubricate the Sump Pump as instructed in LUBRICATION . If lubrication does not result in
satisfactory operation, disassemble the motor inspect and clean all parts.
Rough operation Worn or broken Rear Rotor
Bearing or Front Rotor Bearing Examine each Bearing. Replace the Rear Rotor Bearing Seal Assembly if worn or damaged
or replace the Front Rotor Bearing.
Worn Rotor Key Replace the Key. Check the Arbor and Rotor for keyslot wear and replace if necessary.
Bent Arbor Mount the Arbor on centers. Check the bearing diameter runout with an indicator. Replace the
Arbor if runout exceeds .002" Total Indicator Reading.
Scoring of end Plates
or Cylinder Improper assembly Make certain that all motor parts are properly aligned prior to clamping the motor assembly.
Rotor Bearing Seal
misalignment Loosen the Cylinder Case Screws. Rotate the spindle by hand to align the seal. Re-tighten
the Screws to 14 ft-lb (19 Nm) torque. The Spindle must rotate freely.
High free speed Worn Rotor Bearing Seal Replace the Rotor Bearing Seal if the outside high diameter of the hub is worn to 1.76" or
smaller and/or the large inside diameter is worn 0.910" or larger.