Function Of The Unit; Description (A-B); Overview (C); Set-Up Of Pump Before First Operation - Rothenberger ROAIRVAC R32 3.0 Bedienungsanleitung

The noise level during operation can exceed 85 dB (A). Wear ear protection!
Measured values determined in accordance with EN 60335-1.
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Function of the Unit

4.1 Description
Vacuum pump for air evacuation of closed systems (air conditioners, tanks, etc). This equipment
is specially designed for HVAC&R systems.
The two Stages of these pumps make it feasible to achieve the final vacuum level requested for
these type of systems. Besides, the solenoid non-return valve avoids any oil mixture due to the
backflow after a power interruption or any other process interruption.
4.2 Overview
Gas ballast valve
1
Charging plug with filter
2
Oil level sight glass
3
Oil drainage plug
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Vacuum gauge and solenoid valve integrated
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4.3

Set-up of pump before first operation

Pump is supplied without oil charge; before initial operation, it is mandatory to fill the pump with
the recommended oil charge.
Filling of oil
Pump must be turned off for filling the oil and level control.
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
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ENGLISH
1/4"SAE connection
ON/OFF
Cooling fan
Characteristics label
(A-B)
(C)
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