19 OPM-171/B
NOTE: The Rotorcomp oil level can only be checked at the
oil filler opening. The screw cap has a safety hole on the
side, oil or air escapes if there is any residual pressure in the
tank.
NOTE: The CAS R3 should be filled until the oil covers no
more than 3/4 of the sight glass. Wait until the compressor
has been off for several minutes to allow the oil in the
system to drain back into the case. Overfilling to the neck
will cause the system to burp oil.
1. Switch off the compressor and disconnect the battery
to prevent the engine from starting.
2. Wait one minute at standstill.
3. Screw off plug of the filler neck by hand with the oil
level depressurized.
4. Check the oil level. Reference the previous diagram.
5. If necessary, top off oil to the maximum level.
6. Screw on the plug firmly by hand.
7. Switch on the system.
8. Check the plug for any leaks, replace the o-ring if
necessary.
9. Carefully remove escaped, excess oil.
CHANGING THE COMPRESSOR OIL
Refer to the maintenance schedule chart for required oil
change intervals.
WINCO recommends our compressor maintenance kits.
WARNING: PERSONAL INJURY
Rotating, pressurized, and hot components. The oil
change can only be changed at a standstill and with the
compressor system completely discharged.
NOTE: Dispose of the used oil according to applicable
regulations.
1. Switch off the compressor and disconnect the battery
to prevent the engine from starting.
2. Completely release the pressure
in the system.
3. Slowly screw off the screw plug
on the oil filler neck.
4. Unscrew the oil drain screw
(ref. 1) and drain the used
oil into an approved container.
5. Clean the oil drain screw and screw back in.
6. Replace the oil filter if necessary. See Changing Oil
Filter of the Air Compressor section of this manual.
7.3
[en] 02/2014
Installation and operating manual - NK 31
Note
The oil filler neck is positioned so that overfilling
of the screw compressor system is not possible.
Excess oil runs out of the filler neck again.
• Screw on the screw plug 1 firmly by hand.
• Switch on the system.
• Check the oil filler plug for leaks and replace
the O-ring if necessary.
• Carefully remove escaped, excess oil.
7.3 Oil change
Warning
Rotating, pressurized and hot components,
DANGER OF INJURY
The oil change may only be carried out at a
standstill and with the screw compressor system
completely discharged.
7.3.1 Oil change intervals
According to the specifications of the system
manufacturer.
For the reference values for the screw compres-
sor compact module, see chapter 7.8 “Mainte-
nance intervals”.
7.3.2 Oil drain points
The system should be at operating temperature
in this case.
Figure 7-2
Note
Dispose of the used oil according to the appli-
cable regulations.
• Switch off the screw compressor and then
secure it against being switched on again by
removing the main switch.
• Completely release the pressure in the screw
compressor system.
• Slowly screw off the screw plug on the oil filler
neck.
• Carefully unscrew the oil drain screw 1 and
catch the used oil in a suitable container.
• Clean the oil drain screw 1 and screw in again.
1
ADJUSTING AIR PRESSURE
A pressure switch controls the air pressure to maintain100
PSI, it will turn off at 125 PSI. Manual adjustments are not
necessary.
If your application requires higher pressure contact Winco
Service. A pressure switch of 120-150 PSI is available and
compatible with this system.
AIR COMPRESSOR MAINTENANCE
All maintenance, assembly, and repair work should be
carried out by an authorized, qualified, specially trained
personnel. These precautions must be followed:
1. Only use suitable tools for maintenance and repair
parts.
2. Only use genuine parts.
3. All maintenance and repair work must only be carried
out with the complete unit shut down and the power
supply switched off. Ensure the machine is secured
against accidental switch-on.
WARNING: PERSONAL INJURY
Before removing plugs, filters, and other pressurized parts,
the compressor must be cut off from all pressure sources
and a pressure relief of the entire system must be carried
out.
4. Never use flammable solvents or carbon tetrachloride
to clean parts.
5. Always ensure the area is clean and free from dirt
when conducting maintenance or repair work. Cover
parts and exposed openings with a clean cloth, paper,
or adhesive tape.
6. Do not conduct any welding or other heat producing
work around the oil system.
7. Ensure no tools, loose parts, or cloths are left on or on
the system.
8. Prior to using the unit, check whether the operating
pressure, temperatures, time settings, and the oil levels
are correct. Also check that the control and switch-off
devices function properly.
CHECKING THE COMPRESSOR OIL
LEVEL
Sight Glass
CAS
1/4
1/2
3/4
Fill To
COMPRESSOR MAINTENANCE
7.2
[en] 02/2014
Installation and operating manual - NK 31ROTORCOMP VERDICHTER
7.2 Oil level
An important factor for the operating safety of the
system is the oil level in the oil reservoir.
The oil level check must be carried out before
commissioning the screw compressor module
and then repeated every 100 operating hours..
The exact oil level check can only be carried out
via the oil filler opening.
Warning
Rotating, pressurized and hot components,
DANGER OF INJURY!
7.2.1 Oil level check via oil filler opening
Warning
– The unit parts, oil and oil filler plug 1 may be
over 80°C/176°F; danger of burns!
Wear personal safety equipment!
– With hot oil, the oil level can be approx. 10 mm
higher than with cold oil shortly after discharg-
ing.
As a result, oil may escape when the oil filler
plug is opened at the maximum oil level. In
this case, close the oil filler plug again imme-
diately and carefully remove the oil which has
escaped.
Figure 7-1
Note
The screw cap of the oil filler neck is provided
with a safety hole on the side from which oil or air
escapes if there is any residual pressure in the
separating tank. Wait briefly in this case.
• Switch off the system and secure it against
unauthorized switch-on.
• Wait for one minute at standstill.
• Screw off the screw plug 1 of the filler neck by
hand with the oil level depressurized.
• Check the oil level.
• If necessary, top up oil of the same oil type and
the same brand up to the maximum level.
MAX
MIN
1
Rotorcomp
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