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6190755 (Rev A) 86/87R Compressor System User Guide
© 2015, JUN-AIR
We reserve the right to make any alterations which may be due to any technical improvements
Printed in the USA
Preventive maintenance
Weekly
Drain condensate from air receiver. If
equipped with autodrain, this will take
place automatically, however, drain
bottle has to be emptied.
If compressor is fitted with outlet filter,
check and empty for water by pressing
the black button at the bottom. If fitted
with autodrain, this will take place
automatically.
Check motor, air tubes, hoses and
equipment for leaks, and check the
pumping time.
Clean unit or wipe with a soft, damp
cloth. If necessary, use paraffin on rag
to remove sticky adhesions. Dust and
dirt prevent cooling.
Check intake filter. Clean or replace if
necessary. Minimum every 2000 hours
Replace silencer (intake filter), if
necessary
Check the O-ring in the non-return
valve and replace, if necessary.
Note! Empty receiver of air before
dismounting.
Check filter regulator, clean or replace
as neccessary
Test the safety valve by gently pulling
the ring with pressure in the receiver.
4. Loud noise from system:
a) Dirt or failure in non-return valve. Clean or replace.
5. System gets very hot:
a) Leaks. See above
b) Too high ambient temperature. Ensure adequate ventilation if the
vacuum pump is installed in a cabinet.
c) Overloaded. Ensure system is correct model for work load.
6. System starts when no air is being tapped:
a) Leaks. Step 3 - b
7. System does not switch on against pressure or does not switch
off at max. pressure:
a) Defective pressure switch. Replace.
Non-return valve Maintenance (NRV)
· Once a year.
· Switch off system on the main switch and pull out the plug.
· Pull the ring at the end of the safety valve (see back of manual).
Warning:
Loud noise!
· Let pressure fall to 0 bar. The pressure is to be read on the pressure
gauge for receiver pressure (see back of manual).
· If the system is mounted with a TÜV-approved safety valve, the receiver is
emptied by loosening the screw at the end of the safety valve
· Dismount non-return valve from receiver
· Disassemble non-return valve and remove O-ring from piston
· Clean non-return valve.
· Mount new O-rings and re-assemble non-return valve (Two O-rings in non-
return valve)
Monthly Annually 2000 Hours
Filters and non-return valves should be serviced every 2000 hours. The JUN-AIR basic service kit (identified in the accessories
portion of this manual) can be purchased to accommodate.
The comprehensive service kit includes components to maintain the system’s compressor (cups, valves, o-rings, cylinders) as well as
the systems filter elements, unloader valve, silencer, & NRV.
Comprehensive service kits should be utilized every 8000 hours.
Any solenoid accessories on the system should be serviced every 12000 hours.
Check the Pumping Time
The pumping time indicates the condition of the compressor provided that
there are no leaks in the system where the compressed air may leak. Test the
compressor as follows:
1. Empty the air receiver of compressed air ( the pressure gauge shows 0 Bar)
2. Close the outlet on the air receiver and check that the drain cock is closed.
3. Start the compressor and note how long it takes until it switches off.
Ensure that the pressure in the air receiver is 8bar/120 psi as deviations may
indicate the wrong results (see technical Specifications for pumping time)
Important!
Always test the compressor when cold as the time indicated
refers to the pumping time of a cold compressor. The pumping
time of a warm compressor is much longer and consequently,
the result would be misleading.
WARNING: To Avoid Serious Burns:
Do not touch surface during
operation.
Indicates package should be handled with
these symbols pointing up.
FRAGILE: Handle package with care.
Indicates this package must be kept dry.
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