During Operation - vacuubrand HP 40B2 Instructions For Use Manual

Venting the vacuum vessel
➨ Close high vacuum valve (V3).
➨ Close by-pass valve (V2) (if not closed).
➨ Open venting valve (V4).
Pumping down again
➨ Close venting valve (V4).
➨ Close fore-vacuum valve (V1).
➨ Open by-pass valve (V2).
➨ Close by-pass valve (V2) once the pressure inside the vacuum vessel is below
0.1 mbar.
➨ Open fore-vacuum valve (V1).
➨ Open high vacuum valve (V3).
+ Note: If the fore-vacuum (M1) rises above 0.1 mbar, close the high vacuum valve
(V3) and pump down with the backing pump to a pressure below 0.1 mbar.
+ If the thermal cutout of the rotary vane pump has tripped, it is imperative
that the high vacuum valve (V3) be closed and the diffusion pump switched
off!
Vacuum connection diagram:
M1
V4
V1

During operation

+ Maximum ambient temperature: 40 °C
Check the maximum temperatures, if installing the pump in a cabinet or a housing.
Make sure ventilation is adequate, especially if the ambient temperature is el-
evated.
• Check the oil level of the rotary vane pump and the pump fluid level of the diffu-
sion pump every time before starting the pump, however at least once a week.
Check the oil and pump fluid levels more frequently if high amounts of gas or
vapor are pumped.
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999069 / 28/04/2016
page 15 of 20
M2
V3
P2
V2
F0
P1
P1 Backing pump
P2 Diffusion pump
V1 Fore-vacuum valve
V2 By-pass valve
V3 High vacuum valve
V4 Venting valve
M1 Measuring point 1
M2 Measuring point 2
F0 Oil mist filter