Notice – Labconco VACUUBRAND Diaphragm Pump 7393000 User Manual
Page 19
from hot surfaces or electric sparks. Ensure that hot
surfaces of the pump do not cause burns. Provide a
suitable contact guard if necessary.
• Ensure that the
coolant outlet pipe at the waste vapor
condenser is always free and that it cannot get blocked.
Do not start the pump if the pressure difference between
inlet and outlet exceeds 16 psi (1.1 bar) at maximum.
Prevent the backpressure of gases and the backflow of
condensates at the outlet.
Check the liquid level in the catchpots regularly and drain
condensate in time to prevent overfilling. Install a level
sensor (see ”Accessories”, pg. 48) for monitoring, if
necessary.
Provide appropriate protective measures to allow for the
possibility of failure and
malfunction. The protective mea-
sures must also allow for the requirements of the respec-
tive application.
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 elimi-
nate the cause of failure. Wait approx. five minutes before
restarting the pump.
•
Note: In case of supply voltage below 100V, the lock
of the cutout might be impaired and the pump may
restart on its own after sufficient cooling down. Take
appropriate precautions, if an automatic restart of the
pump may lead to a dangerous situation (e.g., switch
off the pump and disconnect from the power source).
NOTICE