Dover Blackmer TLGLF3C Kurulum, Çalıştırma ve Bakım Talimatları - Sayfa 10
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following the appropriate procedures and warnings as presented in this manual.
SYMPTOM
Pump Not Priming
Reduced Capacity
Noise
Damaged Vanes
Broken Shaft
Mechanical Seal Leakage
TROUBLESHOOTING
Maintenance shall be performed by qualified technicians only,
PROBABLE CAUSE
1. Pump not wetted.
2. Worn vanes.
3. Internal control valve closed.
4. Strainer clogged.
5. Inlet line or valves clogged or too restrictive.
6. Pump vapor-locked.
7. Pump speed too low for priming.
8. Relief valve partially open, worn or not seating properly.
1.
Pump speed too low.
2.
Internal control valve not fully open.
3.
Excessive restriction in the inlet line (i.e.: undersized piping, too many elbows & fittings,
clogged strainer, etc.).
4.
Damaged or worn parts (vanes, cylinder, or rotor).
5.
Excessive restriction in discharge line causing partial flow through the relief valve.
6.
Relief Valve worn, set too low, or not seating properly.
7.
External Bypass Valve set too low.
8.
Operating without a vapor return line.
9.
Vanes installed incorrectly (see "Vane Replacement").
10. Liner installed backwards.
1. Excessive pressure drop on the pump due to:
a.
Undersized or restricted fittings in the inlet line.
b.
Pump speed too fast.
c.
Pump too far from fluid source.
2. Running the pump for extended periods with a closed discharge line.
3. Pump not securely mounted.
4. Improper drive line – truck mounted pumps (See "Pump Drive").
5. Misalignment of pump, reducer, or motor - base mounted pumps.
6. Bearings worn or damaged.
7. Vibration from improperly anchored piping.
8. Bent shaft, or drive coupling misaligned.
9. Excessively worn rotor.
10. Malfunctioning valve in the system.
11. Relief valve setting too low.
12. Liner installed backwards.
13. Damaged vanes (see following category).
1. Foreign objects entering the pump.
2. Running the pump dry for extended periods of time.
3. Cavitation.
4. Excessive heat.
5. Worn or bent push rods, or worn push rod holes.
6. Hydraulic hammer - pressure spikes.
7. Vanes installed incorrectly (see "Vane Replacement").
8. Incompatibility with the liquids pumped.
1. Foreign objects entering the pump.
2. Relief valve not opening.
3. Hydraulic hammer - pressure spikes.
4. Pump/driver, driveline/drive shaft misalignment.
5. Excessively worn vanes or vane slots.
1. O-rings not compatible with the liquids pumped.
2. O-rings nicked, cut or twisted.
3. Shaft at seal area damaged, worn or dirty.
4. Bearings overgreased.
5. Excessive cavitation.
6. Mechanical seal faces cracked, scratched, pitted or dirty.
501-D00
NOTICE:
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