9.10 Starting-up
Observe the basic safety instructions when using the pump.
Before using the pump for the first time, it is recommended to spend a few minutes inspecting the pump and
its electrical and vacuum connections. Please notice the information which are listed in chapter 4.0
Installation and 9.0 Operation.
Connect the power cord to the power outlet.
Recheck the oil level and add or remove oil as needed. How to do this see chapter 11.20 Oil Level
Control.
Close off the pump intake and the gas ballast valve, and run the pump at blankoff for a few minutes. The
gurgling noise should go away after a few minutes of running; it is caused by the high volume of air that
flows through the pump when the pump is first turned on. If the gurgling noise does not stop, check the
oil level again to see if it is low. Also check the pump intake fitting to be sure that it is tight.
Once proper pump operation has been verified, the pump intake can be opened to the vacuum system.
After running the pump for a few minutes, check the oil level again. If the level is too high or too low,
stop the pump, vent it to the atmosphere and add or remove oil as needed – see chapter 11.40 Oil
Change.
Before starting the pump when connection to the vacuum system, check all vacuum connections.
9.20 Oil level
The oil level must at all times between the upper and lower markings of the oil level indicator. The oil must
be topped up if the oil level falls to the lower mark.
9.30 Operating temperature
The function of the vacuum pump filled with VWR RV+ Oil is guaranteed between ambient temperatures of
10 °C and 40 °C.
The lowest starting temperature is 12 °C. The pump must be vented on the suction-side (suction port open).
WARNING!
In dependence on the operation mode, the casing temperature can reach 90 °C. Make
sure that the vacuum pump has not been installed in an accessible area, and make
provision for a guard against contacts!
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