CompAir 5280D.1.IAC Operator's Handbook Manual page 37

CompAir UK Ltd
5280D Compressor Publication 98407.1440
Page 34
FAULT
11.13
Low oil pressure
11.14
High Air or Gas
temperature.
11.15
High oil consumption
11.16
Compressor "knocks"
11.17
Vibration
1440.doc
POSSIBLE CAUSE
Low oil level
Loose suction pipework
Oil filter blocked
Worn bearings
Incorrectly fitted small-end bearing
Insufficient cooling water flow.
Poor compressor location
Operating duty exceeds
recommended limits.
Broken cooling air fan blades.
Cooler tubes fouled.
Incorrect rotation.
Oil level too high
Incorrect lubricating oil
Entrained air when unloaded.
Loose flywheel or pulley
Broken valve plates
Insufficient piston "top-dead-centre"
clearance.
Loose first stage piston rod or
crosshead locknut.
Piston or crosshead seizure
Loose big-end bolts or small end
bearing
Loose foundation bolts
Anti-vibration mounts incorrectly set
up
Compressor not level.
Delivery flange not aligned with
users pipework
Crankshaft balance weights loose
Main end bearing caps loose
Piston and crosshead nuts loose.
RECOMMENDATION
Fill to maximum level
Check and tighten
Replace as necessary
Check and replace
Check and replace as necessary
Check for closed isolating valves.
Check operation of pneumatic water
valve and thermostatic water valve.
Check power supply to water pump
and drive.
Air lock in water system.
Restriction of air flow to radiator cooled
units. Recirculation of cooling air flow
with radiator units. Too high ambient
temperature for radiator cooler.
Correct as 'leading particulars' section.
Replace
Check, clean, replace as necessary.
Check and reverse as necessary.
Correct level to maximum only.
Check oil grade and renew with
CompAir recommended oil.
Check piston rod gland wear.
Check by manually operating
interstage safety valves.
Check key seats for belt drive pulleys.
Check all valves-interstage safety
valve immediately after problem valve
may be blowing.
Check piston clearance is within limits.
Remove cylinder head and check
security.
Check for free movement of pistons. If
seizure then replace.
Check security of bolts and clearance
in small end bearing.
Check security and tighten.
Check and adjust
Check and rectify, using packing
pieces as necessary.
Check and rectify
Check and rectify, tighten securing
bolts to correct torque loading
Check and rectify, tighten securing
bolts to correct torque loading
Check and rectify, tighten securing
bolts to correct torque loading