Table of Contents
Advertisement
6. - TROUBLE SHOOTING GUIDE
•
•
• • • •
•
• • •
•
• • •
•
•
• • •
•
• • •
•
•
• • •
•
• • • • • •
•
•
•
• •
•
•
•
• • • •
•
• • • •
•
• • •
• • •
•
• •
•
• •
•
•
•
• • •
•
•
•
• •
•
•
•
• • •
•
•
•
• • •
•
•
• •
•
•
•
• • •
•
•
•
•
•
•
•
•
•
•
INCONVENIENCES
CAUSES
Wrong rotation direction
Unprimed pump
Not enough flushed
Product evaporates at inlet
Air enters inlet
Air is in suction
piping
Not enough flushed in
suction container
Dirty or blocked valve or
suction filter
Excessive product viscosity
Insufficient product viscosity
•
Excessive product temperature
Insufficient product temperature
Suspended particles in
product
•
Excessive back pressure
•
•
Too tight packing
Too loose packing
•
Insufficient seal liquid
Excessive pump speed
Insufficient pump speed
Press on rotor
•
case
Belt slips
Not alined joint
Pump or drive device not
fixed on base
•
Worn out bearings
Worn out or unsynchronized
•
gears
Wrong quantity or quality
•
of gear oil
•
Parts in touch rotor case
Worn out rotors
Check valve leaks
Check valve vibrates
Check valve is bad adjusted
1. Invert it
2. Fill pumping chamber and feeding piping with liquid, expelling
air
3. Increase flushing height, enlarge suction piping diam, reduce
suction piping lenght and bends, reduce pump speed and medium
temperature, check the viscosity increase is suitable to motor
power
4. Remedies as per par. 3
5. Check and tighten suction piping connections, tighten the packing
gland, if necessary replace it
6. Remedies as per par. 2
7. Increase product level, lower suction opening position
8. Clean them
9. Reduce pump speed, increase product temperature
10. Increase pump speed, decrease product temperature
11. Decrease product temperature, cool pumping chamber
12. Increase product temperature, heat pumping chamber (within the
limits given by manufacturer)
13. Clean suction pipe, arrange on inlet a filter
14. Remove possible obstructions in outlet piping, clean it,
enlarge its diam., reduce lenghts and bends of outlet
piping
15. Loosen packing gland and tighten it rightly (see instructions)
16. Tighten packing gland rightly (see instructions)
17. Check liquid flow and if necessary increase it
18. Decrease pump speed
19. Increase pump speed
20. Check piping alignment, insert flexible joints, sustain piping
21. Strech it
22. Adjust alignment between pump and drive device
23. Tighten anchor bolts, re-checking alignment
24. Have them replaced by manufacturer
25. Replace them or adjust them according to manufacturer's
instructions
26. Act according to manufacturer's instructions
27. Check plan pressure and duty pressure, contact manufacturer
28. Replace them
29. Check valve adjustment, check and clean sealing devices, if
necessary replace parts
30. Check valve adjustment (see instructions), check and clean valve
31. Adjust spring compression, so that valve opens with a pressure
over 10% of duty pressure.
13
R E M E D I E S
Hide quick links:
Advertisement
Table of Contents
