Rothenberger ROAIRVAC R32 1.5 Instructions D'utilisation page 19

Pump is supplied with a mineral oil bottle but without oil charge inside the vacuum pump; before
initial operation, it is mandatory to fill the pump with the oil up to the indicated oil level in the oil
level sight glass. Only use ROTHENBERGER oil; different lubricants reduce performance and
may cause irreversible damage to the pump. Warranty is void if other oil has been used.
For fill-up proceed as follows:
Unscrew charging plug (placed on upper part of pump)
Slowly add the oil until middle of sight glass has been reached (indicated by MAX MIN line)
Screw-on the plug again
To avoid excessive filling, it is suggested to only add the oil with a graduated recipient; in that
way it is easy to check the added volume. In case of excessive filling, it is necessary to com-
pletely empty the pump and repeat the oil filling procedure.
WARNING: Do not pollute the environment by spilling oil; the lubricant oil is a special
waste and must be disposed of according to relevant local law / guidelines in force.
Connection for evacuation
Shorter hose length or wider ID, as well as straight path, reduce the evacuation time as the
pump will reach the desired vacuum more quickly. To prevent backflow of lubricant from the
pump into the evacuated system in case of unexpected power failure, a solenoid non-return
valve is provided at the suction connection.
Power Supply
Always check the power supply; it has to comply with the data on the rating label on the pump.
The pumps' motor is equipped with a thermal overload protection with automatic reset and cuts
off power supply at +130° C / +266° F.
General precautions
The pumps' motor must always be suitably grounded. The pump temperature is not expected to
rise to a very high level during operation; however it is advisable to locate the unit in such a way
that no contact can be made, as it may cause burns. When using the pump with other equip-
ment, it must be ensured that the pump is fixed properly and safe to use for the operator. The
vacuum pump is air cooled by a built-in fan; only use it where the air can freely circulate and
keep it away from walls or obstacles no less than 2" (5 cm). Do not cover the pump during oper-
ation.
4.4 Operation
To guarantee reliability and high level of quality, each pump is subjected to a rigorous testing
and suitable preliminary running in before it leaves the factory. Constant performance and long
operating life are assured by strictly observing the following procedures:
Pump start
Before the first initial run, it is mandatory to:
Fill the pump with the provided oil (see section "filling of oil").
Before subsequent start-ups, always check the oil level before starting the pump. If neces-
sary, top-up or replace the oil.
Before connecting the pump to the system to be evacuated, check that there is no pressure
inside. In case of connecting the pump with a pressurized system, the vacuum gauge may
break. The vacuum gauge measures negatives pressures and get collapsed with positive
pressures. Warranty is void if the pump is connected to a positive pressure.
Connect the pump to the system to be evacuated by the necessary equipment (quality hos-
es, quality manifolds, etc). The evacuation quality will be directly related to the way of con-
nection and to the equipment quality.
In case of malfunctioning, stop the pump and call the Service- After-Sales.
Pump stop
As the mixture of incompatible lubricants (pump oil and compressor oil) can lead to pump failure,
installing a solenoid non-return valve at the suction connection is required (provided). In case of
frequent on-off cycling, do not stop the pump but shut-off at the charging hose or manifold in-
stead.
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