10
Maintenance and
cleaning
●
Condensation water
Let out the condensation water
daily by opening the drain valve
(bottom of the pressure
vessel).
●
Safety valve
The safety valve is set to the
maximum pressure of the
pressure vessel. It is prohibited
to adjust the safety valve or to
remove its lead seal.
●
Regular oil level checks
The level of oil has to be visible
in the sight-glass between the
red check-point mark and the
upper edge of the sight-glass.
Changing the oil:
Recommended grade SAE
15W/40 or equivalent.
The first oil change should be
carried out after 100 operating
hours. Thereafter you should
drain the oil and replace it with
new oil at intervals of 500
operating hours.
●
Changing the oil
Switch off the motor and pull
the power plug out of the
socket-outlet. After letting off
any air pressure you can
remove the oil drain plug from
the compressor pump by un-
screwing. To prevent the oil
escaping out of control, hold a
small piece of metal guttering
underneath the drain plug to
direct the oil into a container.
If any oil still remains inside, tilt
the compressor a little.
Take the old oil to an official
old oil disposal station.
When the old oil has run out,
screw the oil drain plug/sight-
glass back in place.
Use a screwdriver to remove
the cap of the oil filler plug and
fill in oil until the level of oil in
the sight-glass reaches the red
mark.
Then put the cap back on the
oil filler plug.
1
Filter
2
Oil filler plug
3
Oil drain plug
4
sight-glass
●
Cleaning the intake filter
The intake filter prevents dust
and dirt being drawn into the
machine. This filter has to be
cleaned at intervals of no
longer than 300 operating
hours. A clogged intake filter
has a considerable negative
effect on the compressor’s
power.
The filter can be removed as
shown in Figure 4. Wash out
the filter with petroleum ether
and reinsert.
Caution! Wait until the
compressor has cooled
completely!
Risk of burns!
Setting the pressure
switch
The pressure switch is set at the
factory.
Switch-on pressure 5 bar
Switch-off pressure 8 bar
To adjust the differential pressure,
proceed as follows: Take the
cover hood off the pressure
switch (unscrew the screw plug).
Use an 8 mm socket wrench on
screw 1 to adjust the differential
pressure DP. Turn clockwise to
increase the differential pressure
and raise the switch-off pressure.
Turn anticlockwise to decrease
the differential pressure and lower
the switch-off pressure.
Possible causes of
machine failure
Overloading of the motor and
hence triggering of the overload
circuit-breaker may result from:
●
An excessively high mains
voltage
●
Excessively high ambient
temperatures and an
insufficient air supply
●
Defective compressor valves or
a leaking non-return valve
●
A low level of oil, sluggish
connecting rod bearings
Leave a.c. motors enough time to
cool off before switching on again.
Avoid touching hot components
and pipe lines.
Ordering replacement
parts
Please quote the following data
when ordering replacement parts:
●
Type of machine
●
Article number of the machine
●
Identification number of the
machine
●
Replacement part number of
the part required
GB
6
5
