15
GA 01.600/10.02 - 07/01
Operation
2.4 Start Up
Check the oil level each time before swit-
ching on the pump (see Section 3.2).
After having connected the motor and each
time after having made a change to the
wiring you must check the direction of rota-
tion (see Section 2.3.2).
The pump is started up by operating the ON/OFF switch
(6/10 - does not apply in the case of pumps with a three-
phase motor). The ON/OFF switch may be operated at
all pressures.
During initial start up and after a longer period during
which the pump has not been used, the pump may not
immediately attain the specified ultimate pressure
because the oil has to be degassed first.
For this you should let the pump run for about 30 minu-
tes with the intake line closed and the gas ballast valve
(6/7) open (position 2 of the gas ballast valve).
2.5 Operation
These pumps are capable of pumping gases and
vapours. Vapours can only be pumped provided the gas
ballast valve (optional) is open and provided the pump
has attained its operating temperature.
The maximum vapour tolerance is attained when the gas
ballast valve (6/7) is set to position 3.
2.5.1 Pumping of Non-Condensable Gases
and Vapours
In the presence of excess quantities of permanent gases
the pump may be operated without gas ballast, provided
the saturation vapour pressure at the operating tempera-
ture is not exceeded during compression.
If the composition of the gases which are to be pumped
is not known and if the possibility of condensation within
the pump can not be excluded, we recommend operati-
on of the pump with the gas ballast valve open (in accor-
dance with Section 2.5.2).
Caution
TRIV
AC
OUT
IN
OUT
IN
OIL
B
G
0
1
2
3
11
1
2
3
4
5
6
7
8
10
9
Key to Fig. 6
1
Intake port
2
Exhaust port
3
Oil drain
4
Oil level indicator
5
Name plate
6
Oil fill
7
Gas ballast valve
8
Dirt sieve
9
O-ring
10 ON/OFF switch
11 Mains connection
Fig. 6 Connections and controls
Summary of Contents for D10E
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