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Item 52900, 52905
Page 6
The Tool Experts
08 2022-1
ATTENTION:
Any insufficient oil level will result in a worse end vacuum, too high an oil level will cause oil (oil dust) to
be blown off via the outlet1
To switch off the pump
after use,
proceed as follows to improve the service life of the pump:
1.
Close the valve between the pump and equipment.
2.
Remove the hose connected to the pump inlet.
3.
Re-screw the closure cap of the intake port to avoid any contamination of the pump by pollution
or particles.
Maintenance
1.
Vacuum pump oil
The condition and type of the oil are crucial for the achievable end vacuum. It is recommended
to use high-vacuum oil. This is a particular mixture that allows maximum viscosity during normal
operation and good cold starts.
2.
Oil change
a)
The pump must run at least 30
min to allow the oil to become thinner. Remove the oil drain
screw. Collect the waste oil in an appropriate container and dispose of it properly. The oil drain
can be accelerated by opening the closure cap of the intake port and partially closing the outlet
port during at most 20
s with the engine running. After draining, tilt the pump towards the oil
drain opening to drain remaining oil. If necessary, fill in a small quantity of oil into the outlet port
and use it to flush. Re-drain afterwards. Flushing can be repeated several times if the waste oil
has been very contaminated (with heavy contamination, the oil might be filled in to a high level
and the pump run during a prolonged time with the outlet closed).
Clean oil means lower wear
and tear and a longer service life!
b)
Re-screw the oil drain screw. Remove the outlet connection and fill in oil up to the lower edge
of the window (see technical specifications). Make sure that the suction side is closed. Run the
pump during 1
min, adjust the oil level as described under Commissioning, 3. Make sure that
the outlet connection is re-screwed, the outlet port closed, and the oil drain screw tight.
c)
If the oil is heavily contaminated by water emulsions, it may be necessary to screw off the pump
lid and to wipe the pump clean.
3.
You might also lead the oil into the recipient of the pump: To do so, wait for the pump to warm
up. With the pump running, screw off the oil drain screw, partially close the outlet. The oil is
pushed back from the oil recipient like this and will take the contaminations along. When no
more oil comes out, switch off the pump. Repeat until the contaminations are flushed out. Now
re-screw the oil drain screw and top up the oil level as described.
Troubleshooting
The pump has been constructed for a dependable operation and long service life. The following hints
are meant to help you to re-operate your pump quickly if this has any dysfunctions. When you decide to
unmount the pump, note that errors made during this procedure might void the warranty.
1.
Starting problems
Check the mains voltage.
2.
Oil leaks
Make sure that the oil used does not derive form a previous oil change. If there is oil near the drain
screw or at the pump lid seal, check these and, if necessary, replace the oil and seal.
