TROUBLESHOOTING
CB9A-030 page 25/28
PROBLEM
STEP
PROBABLE CAUSE
WHAT TO CHECK
IF PROBLEM
STILL EXISTS
GO TO STEP ...
1
4-Way Valve Leaking
(when equipped)
Lubricate with a stick lubricant compatible with
material being transferred.
2
2
Worn or Broken Piston Rings
Check condition of rings by restricting discharge
line. If pressure increases slowly, rings are
probably faulty.
3
3
Plugged Strainer
Clean screen as necessary.
4
4 Compressor
Valve
Faulty
Remove and inspect for broken or worn springs,
discs, or bodies.
5
5 Compressor
Drive
Slipping
Tighten belts, check for sheared keys, loose keys
or loose flywheel.
6
Low
Transfer
Rate
6
Piping Improperly Designed or
Installed
Use proper pipe sizes.
7
No
Flow
7
Excess Flow Valves Slugged
Stop the compressor to let the excess flow open.
Installation of a valved bypass line between the
suction and discharge lines my be necessary.
3& 4
8
Loose Valves
Tighten valve hold-down screws.
9
Knocks or
Other
Noises
9
Worn Internal Parts
Inspect through inspection plates and repair as
necessary.
4
10
Oil Pump Relief Valve Not Properly
Set.
Set oil pump relief valve.
11
11
Oil Pump Not Working
Check the Oil Pump drive tab or stop pin for
damage.
12
12
Low Oil Level
Check and fill as necessary
13
No Oil
Pressure
13
Dirty Oil Inlet Strainer
Clean Inlet Strainer
14 Faulty/Worn
Packing
Replace
Packing.
15
15
Piston Rod Scored
Replace crosshead assemblies and packing.
16
Gas
Leaking
from
Crankcase
Breather
16
Improper Seal Arrangement
See "Seal Arrangements."
---
17
Valve Closed Downstream of the
Compressor
Open Valve
18
Relief
Valve
Actuates
18
Line Blockage Downstream of the
Compressor
Locate Blockage and Correct
---
19
Loose/Broken Mounting or Anchor
Bolts
See “Mounting the Compressor Unit“
20
20 Improper
Mounting
Ensure base is supported full length. See
"Mounting the Compressor."
21
21
Improperly Aligned V-belt Sheaves
See "V-Belt Drives"
22
22
Improperly Installed Flywheel
See "Compressor Flywheel"
23
Shake
or Vibration
23
Nonfunctioning Valves
Replace or repair valves.
---
Содержание HD942A
Страница 21: ...SEAL PACKING REPLACEMENT CB9A 030 page 21 28 Figure 19 Type D Packing Detail Figure 17 Type B Packing Detail...
Страница 26: ...NOTES CB9A 030 page 26 28...
Страница 28: ...1528 3 e 5...