7
3.5.
Connecting To Mains Power
The pump is driven by AC motors with the following possible
variants:
Power connections must comply with local
regulations. Voltage and frequency information
given on the rating plate must correspond to the
mains voltage and frequency values. The pump
may only be connected to mains current with
earthed conductor.
A thermostatic self-locking coil protection auto-
matically switch off the motor by over-heating.
➡
Switch off pump the pump or isolate the equipment from
mains, wait appr. five minutes for cooling down, before
restarting the pump.
Connect diaphragm pumps in the pumping stati-
on according wiring diagram in operating
instructions PT 800 030 BN of the Backing Pump
Relay Boxes.
☞
PLEASE NOTE
3.3. Connecting The Vacuum Side
➡
Remove locking cap on intake connection.
➡
Make connection between the vacuum system and pump
as short as possible.
➡
Connect pump with intake connection to the apparatus.
➡
If liquid - which would generate vapours - is present in the
system to be evacuated, a condensate trap must be fitted
upstream of the pump.
3.4. Connecting The Exhaust Side
Pressure can rise to dangerous levels in exhaust
lines. Therefore, lay exhaust side lines without
shut-off units. Do not connect the exhaust side
with a closed system on account of the danger
of bursting. For the maximum counter pressure
values at the exhaust please refer to Section 8, Technical
Data.
– If, for internal operating reasons, a shut-off unit has been
fitted or if there is a danger that over-pressures can build
up in the lines, the local accident prevention regulations
must be observed.
In certain applications, exhaust gases and
vapours can be very hot and represent a health
and/or environment hazard.
➡
Lay lines from the pump sloping downwards so that
condensate cannot run back into the pump, otherwise fit a
separator.
Connection with Relaisbox at TC 600 for intermittend operation
Backing pump
MVP line
Relaisbox
PM 041 937 AT
