•
Risk of serious personal injury from exposure to hazardous or toxic liquids. A small
amount of liquid will be present in certain areas like the seal chamber upon disassembly.
•
The pump can handle hazardous and toxic fluids. Identify the contents of the pump and
observe proper decontamination procedures in order to eliminate the possible exposure
to any hazardous or toxic fluids, which may cause injury and/or illness. Wear the proper
personal protective equipment. Potential hazards include, but are not limited to, high tem-
perature, flammable, acidic, caustic, explosive, and other risks. You must handle and dis-
pose of pumped fluid in compliance with the applicable environmental regulations. The
pump must also be decontaminated if it will return to ITT. Refer to the ITT return goods
policy.
CAUTION:
•
Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves
while handling these parts.
6.3.2 Disassemble the head and column
WARNING:
Safe lifting points are specifically identified in the general arrangement drawing. It is critical to
lift the equipment only at these points. Integral lifting eyes or swivel hoist rings on pump and
motor components are intended for use in lifting the individual components only. Never try to lift
the entire pump assembly by the lifting points furnished for the driver only.
1.
Loosen the setscrews that fasten the mechanical seal to the pump shaft. Disconnect the seal and
seal housing from all auxiliary piping.
2.
Remove the necessary components:
If the pump is...
Then remove...
Gear-driven
The driveshaft between the gear and the prime mover.
Electric-motor driven
The electrical connections at the conduit box and label the
electrical leads so they can be reassembled correctly.
3.
Uncouple the driver, or gear box, from the pump shaft and mounting flanges, and then lift off by the
lifting lugs or swivel hoist rings as furnished.
4.
Remove all hold-down bolts and integral piping.
5.
Remove the coupling, mechanical seal and seal housing.
6.
Continue with disassembly down to the bowls as described in the next section.
6.3.3 Bowl disassembly
The bowl assembly is composed of these parts:
•
Suction bell
•
Intermediate bowls
•
Top bowl
•
Impellers and securing hardware
•
Bearings
•
Tie rods
•
Pump shaft
Impellers are secured to the shaft by a key and split-thrust ring and/or retaining ring. Follow only the pro-
cedures that apply to your particular construction.
6.3 Disassembly
52
Model VICR Installation, Operation, and Maintenance Manual
