Paramina MISTRAL M6-EM - Page 21

User Manual - Mistral M6&M8 - 06-2015 edition
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PARAMINA SA – Byway Evaggelistrias str. 19300 Aspropirgos, Greece, Tel: 0030 210 5575860-1
Fax: 0030 210 5575868, email: service@paramina.gr - website: www.paramina-compressors.com 21
Trouble Shooting 
CAUTION
Maintenance work on the compressor must always be done with the compressor stopped and
disconnected from the mains supply. Never forget to open the manual drains, after stopping the
compressor
Especially when you are planning to clean the electromagnetic valves (auto drains version),
always turn off the main electrical supply.
You must always have in mind, if you disconnect the coil of the electromagnetic valves, without
turning off the electrical supply, it will be destroyed immediately!!!
Trouble
Cause
Remedy
Motor does not start
Electric circuitry faulty
Check the fuse, terminal connections,
wire leads.
Decreased
performance of the
compressor
1.Blocked air filter
1.Clean - Replace
2.1
st
stage, 2
nd
stage, 3
rd
stage valves, are
not properly closed
2.Check the intermediate pressures
3.Piston rings worn
3.Replace
4.Wasted cylinders
4.Replace
5.Pipes leaking
5.Tighten and reseal
Compressor does not
attain final pressure
1.Condensate drain Valve and / or fittings
leaking
1.Tighten and reseal
2.Premature opening of final safety valve
2.Clean final safety valve and readjust
3. Excessive piston clearance
3. Replace and regulate again
4. The safety lock opens prematurely
4. Check the intermediate pressures,
regulate or replace valves
Safety valves between
individual stages
releasing pressure
1.If the 1
st
stage safety valve is released,
the 2
nd
stage valves do not close properly
1.Check – replace valves
2.If the 2
nd
stage safety is released, the 3
rd
stage valves do not close properly
2.Check – replace valves
3.Stacked 3
rd
stage piston
3.Replace
Compressor runs too
hot
1.Insufficient supply of fresh cooling air
1.Check location. Max Ambient
temperature under 40 ºC
2.Intake or outlet valves are not closing
properly
2.Check and clean valves, Replace if
necessary
3.Wrong direction of rotation
3.See arrow on the compressor and
remedy accordingly
4.Low oil level
4.Check oil level
Oil residue in delivered
air
1.Improper maintenance of filter
1.Service filter
Renew filter cartridge
2.Wrong type of oil
2.Use right type of oil
3.Activated carbon saturated
3.Renew filter cartridge