Product Manual

Operating Instructions
18
Mechanical Components (Continued)
7. Exhaust Probe (Continued)
It is important to keep the circulating fan and
cooler fins clean to prevent the compressor
from shutting down. Low air pressure can be
used to blow them off or if needed, use water-
based solvent to clean.
8. Oil Cooler
The oil cooler function is to cool the hot oil
from compressor pump and return oil to the air
oil separator tank. It is important to keep the
cooler fins clean to prevent the compressor
from high temperature shut down. Low air
pressure can be used to blow them off or if
needed, use water-based solvent to clean.
9. Oil Filter
The oil filter is a paper filter with a
filtration of 10 PPM. It removes
impurities and protects the bearings
and rotors. Replace the filter core every 4000
hours or annually, whichever comes first.
Replace oil and filter after first 600 hours of
operation. Refer to the computer controls of
the compressor to monitor operating time and
remember to reset maintenance timer when
filter is replaced. An automatic alarm can be
set to remind operator of service times.
10. Air/Oil Separator Tank
This is a steel pressure vessel used to store
lubricating oil and to separate the compressed
air and the lubricating oil. An oil sight gauge is
installed on one end of the air/oil separator
tank. Make sure oil level is at high oil level
indicator when unit is shut down. During
operation, the oil level should stay between the
high oil level line and the lowest oil level line.
After the machine has been shut down for an
hour, open the drain valve slightly, that’s under
the air/oil separator tank, to drain condensed
water in the tank. This drain valve can also be
used to gather oil for oil analysis. Refer to
warranty statement for analysis requirements.
Replace lubricating oil after first 600 hours of
operation, then every 4000 hours or more often
if needed. Refer to the computer controls of the
compressor to monitor operating time and to
reset maintenance timer when filter is replaced.
An automatic alarm can be set to remind
operator of service times.
Use only Polar Air oil, model no.
Oil003. For food manufacturing applications, use
model no. Oil001. Use of any other product
causes product damage and voids the warranty.
Refer to warranty statement for oil requirements.
11. Air/Oil Separator Filter
During the process of air compression
from pump, air and oil are mixed
together to lubricate, seal and cool
compressor rotors. This air and oil is
transferred to air/oil separator tank
and then the air/oil separator filter removes
oil mist from the compressed air. The filter
core is made of multiple-layer fine glass
fibers. The filter reduces the oil particle size
and can lower content to less than 3 PPM.
During normal operation, the air/oil separator
filter can be used for about 4000 hours or
annually, whichever comes first. Refer to the
computer controls of the compressor to
monitor operating time and remember to reset
maintenance timer when filter is replaced.
There is an automatic alarm that can be set to
remind operator of service times
12. Safety Valve
The ASME certified safety valve on the air/oil
separator tank is set to open when the pressure
exceeds 175 PSI (12.1 bar). NEVER attempt
to operate machine without ASME safety
valve.
13. Blow Down Valve
The blow down valve is a two-way valve
normally open. When the machine is shut
down or the compressor is unloaded, the vent
valve opens and relieves pressure in the air/oil
separator tank to ensure the compressor will
not be started under load.
14. Check Valve
A minimum pressure check valve is installed
after the air oil separator filter. The starting
pressure is set at over 43.5 PSI (3 bar). The
functions of the minimum pressure valve are
as follows: