Troubleshooting Guide - Ingersoll Rand 251A1 Manual Del Usuario

Trouble
Low power or low free speed
Erratic speed
Rough operation
Scoring of End Plates and
Cylinder
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.
MAINTENANCE SECTION

TROUBLESHOOTING GUIDE

Probable Cause
Dirty Air Strainer Screen
Worn or broken Vanes
Worn or broken Cylinder
Improper lubrication or dirt
build–up in the motor
Sticking Governor Valve
Worn or broken Rear Rotor Bear-
ing or Front Rotor Bearing
Worn Rotor Key
Improper assembly
Arbor Packing misalignment
18
Solution
Using a clean, suitable, cleaning solution in a well–
ventilated area, clean the Air Strainer Screen.
Allow to air dry.
Replace complete set of Vanes.
Examine Cylinder and replace it if it is worn or bro-
ken or if bore is scored or wavy.
Lubricate the pump as instructed in
LUBRICATION. If lubrication does not result in
satisfactory operation, disassemble the pump,
inspect and clean all parts.
Replace Governor Valve and/or Governor Valve
Bushing.
Examine each Bearing. Replace if worn or
damaged.
Replace the Key. Check the Rotor Shaft and Rotor
for keyslot wear and replace if necessary.
Make certain that all motor parts are properly
aligned prior to clamping the motor assembly.
Remove the Backhead. Rotate the motor by hand to
align the Seal.