VWR RV2.5+ - Change the Voltage Setting; Type of Motor Protection; Operating Oil

VWR Rotary Vane Pump ver 1.3 23.11.2020
4.51 Change the Voltage Setting
The pumps are factory wired for high voltage (HV) 230V / 60Hz. If necessary, the voltage setting can be
changed as followed. Note that the VWR RV18+ is not switchable.
Fig. 3: Change the voltage setting
Loosen the four screws on top of the terminal box.
Lift the cover and remove it.
Take off the voltage selector switch cover. Do not unscrew the screws of the voltage switch.
Switch the voltage to 220/230/240V or 115V. Use a standard slot screwdriver.
Put the voltage selector switch cover to its original position.
Put the cover on the terminal box and tighten with the four screws.
4.52 Type of Motor protection
The A.C. motors are provided with a thermal overload protection ex works, protecting the motor and vacuum
pump from damage or destruction, respectively. The motor manufacturer makes motor thermal overload
protection available as an aid to minimize motor failure. Overload protection is a standard feature on the
single-phase motor. The motor have overload protection plus manual reset after cool down. Once the
thermal protector operated, the user must turn off the pump and restart manually after cool down.
CAUTION!
The motor has thermal overload protection plus manual reset after cool down. Once the
thermal protector operated, the user must turn off the pump and restart manually after
cool down.
4.60 Operating oil
WARNING!
Vacuum pump is shipped without oil inside to prevent possible spillage during shipment.
Oil must be added prior to use!
The vacuum pump is delivered with VWR RV+ Oil and can therefore be used for pumping out neutral gases
and vapours.
The oil fulfills the following functions in the vacuum pump:
- lubricating the sliding parts, such as rotor, vane, radial shaft seals
- sealing the moving parts against the stator wall to reduce leaks
- conducting the heat of compression to the metal walls (cooling)