MNL-126509
3.1.10 Troubleshooting and Repair
3.1.10.1 Troubleshooting Table
Trouble
No oil pressure
Oil foam in crankcase
Compressor output insufficient
Safety valves between stages
releasing pressure
Compressor running too hot.
Oil residue in delivered air
Compressor rotates in the
wrong direction
April 4, 2013
Cause
Low oil level
1. Last stage piston worn
2. Last stage pressure valve
defective
1. Condensate drain valves or
fittings leaking.
2. Premature opening of final
safety valve.
3. Piston rings worn
4. Excessive piston clearance
5. Pipes leaking
1. inter-stage pressure too
high
2. Valves not closing properly
1. Insufficient supply of cool-
ing air
2. Intake or outlet valve not
closing properly
3. Wrong direction of rotation.
1. Improper maintenance of
filters, purifier cartridge
saturated.
2. Wrong oil type
Electrical phases not connected
properly
Remedy
Check oil level
1. Operate compressor with
final stage valve head
removed. If oil flows con-
tinuously out of cylinder,
replace piston and sleeve.
2. Replace last stage valves.
1. Tighten and reseal.
2. Clean and adjust final
safety valve.
3. Replace
4. Replace
5. Tighten
1. Service and clean valves.
2. Service and clean valves.
1. Check location for adequate
ventilation
2. Check and clean valves,
replace as necessary
3. Check arrow on compressor
and correct accordingly.
1. Service filters, change puri-
fier cartridge.
2. Change to proper oil and
clean valves.
Reverse two of the three phase
leads at the switch box. Do NOT
change the leads at the motor ter-
minal.
Page 47
Need help?
Do you have a question about the Mini Verticus and is the answer not in the manual?
Questions and answers