ITT ICS manual Reassembly, Troubleshooting Guide, Symptom, Probable Cause

•To remove the shaft sleeve (126) it is necessary to evenly heat the outside of the sleeve, with a hand propane torch, while prying between the shaft shoulder and the sleeve.

NOTICE: EXERCISE CARE HANDLING THE HOT SHAFT SLEEVE.

•Removal of the 4 motor adapter screws (371) and motor adapter (108) from the motor completes the close coupled unit disassembly.

•Disassembly of the bearing frame assembly is accomplished by removing the 4 frame adapter screws (371) and remov- ing the frame adapter (108) from the bearing frame (228).

•Remove the 4 bearing cover (370C) screws, being careful not to damage the lip seal (139). Inspect lip seal for damage and replace as required.

•Remove the shaft assembly from the bearing frame, by pull- ing the motor end of shaft out of the housing.

•Being careful not to damage the shaft, remove the snap ring

(361)and outer bearings (112) from the shaft. If required remove the inner bearing (168). Inspect the bearings for wear or damage and replace as necessary.

•Inspect the inner lip seal (138) and replace as required.

•Disassembly is complete.

Reassembly

•Reassemble the bearing frame assembly in reverse order

of disassembly. Use appropriate tools for bearing installa- tion and press ONLY on inner bearing race. Press bearings squarely and completely onto the shaft.

•If the shaft sleeve was replaced, it is required that the new sleeve be bonded to the shaft using LoctiteTM #243 or equivalent. Following the manufacturer’s instructions in the preparation of the sleeve and shaft, apply bonding agent to the surfaces then slide the sleeve over the shaft. Remove all excess bonding agent.

•Install the shaft assembly into bearing frame. DO NOT damage the inner lip seal.

•Insert and tighten the 4 bearing cover screws.

•Install the bearing adapter, nameplate towards the TOP, using the 4 screws.

•Inspect and remove any debris from the seal housing sta- tionary seat bore. Lubricate the outside diameter of the new stationary seat with a good quality O-ring lubricant and press seat squarely and completely into the seal housing. With a clean, lint free cloth remove any debris or lubricant from the seat face. DO NOT scratch the face.

•Install a new seal housing O-ring on housing, then care- fully slide seal housing over shaft and attach housing to the motor adapter with the 4 screws. DO NOT damage the mechanical seal stationary seat.

•Install the new shaft sleeve O-ring.

•Slide the new mechanical seal rotary assembly over shaft sleeve. Apply Loctite™ 7649 and allow to dry. Apply Loctite™ #243 to the motor shaft thread and then screw on the impeller by turning impeller CLOCKWISE. Torque the impeller to 12 ft lbs (1.7 kg/m).

•Shim pack (330) permits renewal of impeller clearance to compensate for impeller or casing wear. The shim thick- nesses, in the shim pack, range from 0.003" to 0.025"

(0.08 mm to 0.64 mm). The factory shim pack thickness is approximately 0.060" (1.52 mm). To set the suggested nominal impeller clearance of 0.020" (0.51 mm) proceed as follows:

•Establish a shim pack thickness that allows for the impel- ler to just touch the inside of the casing surface, when pump is assembled.

•Add an additional 0.020" (0.51 mm) thickness of shims.

•When the proper impeller clearance has been achieved, install and tighten the 4 casing screws.

•Install the 4 bearing frame holddown bolts for the frame mounted units or the 4 motor holddown bolts for the close coupled units.

•On frame mounted units, check the coupling alignment as specified in the “MOTOR TO PUMP – SHAFT ALIGNMENT” section of this manual.

•Inspect unit rotation for binding and correct as required.

•Reinstall the safety guard.

•Reassembly is complete.

Troubleshooting Guide

WARNING	DISCONNECT AND LOCKOUT
	ELECTRICAL POWER BEFORE
Hazardous
	ATTEMPTING ANY MAINTENANCE.
voltage
	FAILURE TO DO SO CAN CAUSE A
	SHOCK, BURN OR DEATH.

SYMPTOM

MOTOR NOT RUNNING

See Probable Cause – 1 through 5

LITTLE OR NO LIQUID DELIVERED BY PUMP See Probable Cause – 6 through 13

POWER CONSUMPTION TOO HIGH

See Probable Cause – 3, 13, 14, 15, 18

EXCESSIVE NOISE and VIBRATION

See Probable Cause – 3, 6, 7, 8, 10, 12, 14, 16, 17, 18

PROBABLE CAUSE

1.Motor thermal protector tripped

2.Open circuit breaker or blown fuse

3.Impeller binding

4.Motor improperly wired

5.Defective motor

6.Pump is not primed, air or gases in pumpage

7.Discharge, suction plugged or valve closed

8.Incorrect rotation (3 phase only)

9.Low voltage or phase loss

10.Impeller worn or plugged

11.System head too high

12.NPSHA too low – Suction lift or suction losses excessive

13.Incorrect impeller diameter

14.Discharge head too low – excessive flow rate

15.Fluid viscosity, specific gravity too high

16.Worn bearing

17.Pump, motor or piping loose

18.Pump and motor shafts misaligned

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