Rotech ANSI LTR, Инструкция по установке, эксплуатации и обслуживанию

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16
WEAR EYE PROTECTION
Failure to do so can result in serious personal injury.
! WARNING !
Before attempting to service the pump:
1. Follow the shut down procedures.
2. Lock out the power source.
3. Allow the pump to cool.
4. Close the suction and discharge valves.
5. Drain the pump.
! WARNING !
APPENDIX
APPENDIX 1
Centrifugal pump troubleshooting
The following table provides possible solutions for symptoms that you may encounter with your centrifugal pump.
TABLE 5: CENTRIFUGAL PUMP TROUBLESHOOTING
MAINTENANCE AND REPAIR
Disassembly Procedures
1. Lock out power supply at the motor starter.
2. Close off discharge, suction, sealing fluid, and cooling fluid.
3. Drain casing and flush, if needed.
Symptom Cause Solution
Pump not delivering
liquid
Low flow and low
head
Pump loses prime
Bearings are
running hot
Motor requires
excessive amperage
• Re-prime pump
• Install shorter suction pipe
• Change motor wiring
• Back-flush pump
• Remove debris
• Replace or adjust packing
• Replace defective part
• Inspect and replace impeller, if needed
• Replace gasket
• Back-flush pump
• Change motor wiring
• Re-prime pump
• Replace gasket or pipe plug
• Repack moving lantern ring to correctly align
with flush hole
• Realign drive coupling
• Check oil level and or grease
• Readjust or replace packing
• Install throttle or reduce impeller diameter
• Adjust part or replace parts
• Check specific gravity of liquid
• Pump not primed
• Suction lift too high
• Wrong direction of rotation
• Impeller clogged
• Suction line plugged
• Pump not primed correctly
• Air leak in suction line
• Lantern ring in wrong location
• Misalignment
• Low or insufficient lubricant
• Stuffing box gland is too tight
• Total dynamic head is too low
• Rotary part rubbing stationary part
• Liquid is heavier than specified
• Air leak in stuffing box
• Worn suction side plate
• Impeller worn or damaged
• Air leak in suction line
• Impeller clogged
• Wrong direction of rotation