Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 21 / 92

Installation
21
5.2.1 Oil filling caution
Make sure the pump is off (main switch on O ) and the power line cable discon-
nected.
Make sure the pump is positioned horizontally .
Remove the pump covers.
Use the funnel equipped with a flexible tube.
5.2.2 Procedure
Fill the housings:
– Roots motor side, and Roots gear side,
– Functional block (FB).
For each housing, proceed as follows:
Remove the fill plug.
Position the funnel in the oil fill neck.
Fill the pump with oil according to the recommended quantities .
– For this to be accurate, wait a few minutes for the oil to settle over all internal sur-
faces : t he oil level should be in the middle of the sight glass.
– If necessary, adjust the oil level so that it is opposite the mark.
Replace the fill plug securely.
Fig. 5: Oil sight glass
5.3 Connection to the water circuit
In order to limit corrosion and motor cooling circuit clogging , it is recommended to
use water with the required characteristics (see 14.2.2) .
If the ”solid particle size“ and ”solid pollution” water characteristic values cannot be
reached, install a filter on the water input.
5.3.1 Procedure
NOTICE
The use of uncontrolled city water can lead to water circuit clogging due to lim-
escale deposition.
This may necessitate, in the worst case scenario, a complete cleaning and overhaul of
the cooling circuit.
The presence of micro-organisms like aquatic weeds and micro-biological sub-
stances like bacteria can lead to cooling problems in the pump.
An appropriate water treatment system must be used to prevent the growth of such
microorganisms.
NOTICE
Risk of water supply failure
If loss of cooling water creates a significant risk for the process:
Control the cooling circuit using an external system able to take over in case of fail-
ure.