VACUUBRAND MD 1C VARIO-SP - Manual (Page 49)

page 49 of 87
Do not start the pump if the pressure difference between
inlet and outlet ports exceeds max. 16.0 psi (1.1 bar).
Attempts to start the pump at higher pressure difference
may cause stalling and damage of the motor.
NOTICE
gas ballast
NOTICE
If pumping condensable vapors (water vapor,
solvents, etc.), let the pump run with gas bal-
last to help purge any condensation in the
pump.
Prevent internal condensation, transfer of liq-
uids or dust. The diaphragms and valves will
be damaged, if liquids are pumped in signifi-
cant amounts.
Check the pump regularly for external soiling
and deposits. Clean the pump if necessary
to avoid an increase of the pump’s operating
temperature.
NOTICE
IN
✘
condensate / dust
Avoid overheating (e.g., due to hot process
gases). Maximum permissible temperature
range: see „Gas inlet temperatures“, pg. 27.
NOTICE
Pumps with AC motor:
In case of overload, the motor is shut down by
a self-hold thermal cutout in the winding.
Note: Only manual reset is possible. Switch
off the pump and disconnect from the power
source. Identify and eliminate the cause of fail-
ure. Allow the pump to cool down sufficiently
before restart.
°C / °F
I ➨ O !
3.
2.
1.
NOTICE
✘