Operation; Routine Maintenance - Rothenberger ROAIRVAC R32 3.0 Bedienungsanleitung

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.
5

Routine maintenance

Periodic and correct maintenance of the vacuum pump will ensure a long operation life and con-
stant performance.
Lubrication
The oil provided with the pump has been specially formulated & manufactured to lubricate vacu-
um pumps; it is special as it features minimum viscosity fluctuation when in use under a wide
temperature range.
The type of lubricant supplied with the pump allows the evacuation of systems operating refrig-
erants. Only working with ROTHENBERGER POE synthetic oil.
The required amount of lubricating oil depends on the size of the pump container specified in the
section "Technical data" and must correspond to the quantity required until the dimensions of
the sight glass are reached.
Replace the oil charge no later than 20 hours of operation.
Oil could be polluted by other oil, humidity, refrigerants, etc. It is mandatory to use oil in perfect
conditions to assure a perfect performance of the pump.
Oil-change
Over-used lubrication oil damages the pumps' mechanism; make sure to replace oil as soon as
it starts to turn cloudy. For conducting the oil-change, the pump must be switched off. For
changing the oil proceed as follows:
 Unscrew the oil drainage plug located on the lower part of the pump
 Check that oil comes out completely from the pump
 Tightly screw the oil drainage plug back on
 Re-fill the pump with oil (see "Filling of oil")
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.
16 ENGLISH