Maintenance and repair, Notice – Labconco VACUUBRAND HYBRID Rotary Vane Pump 7584000 User Manual

Page 15

tem, if the manual gas ballast valve of the rotary vane

pump is open. If this constitutes a potential source of

danger, take appropriate safety measures, e.g., install

a solenoid operated gas ballast valve.

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.

Important notes on working with

condensable vapors:

Allow the pump to attain its operating temperature before

pumping condensable vapors. Keep the vapor inlet pres-

Open the gas ballast valve in case of pumping significant

amounts of vapor.

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.

Avoid high heat supply (e.g., due to hot process gases).

gas and ambient temperatures.

Maintenance and repair

In order to comply with laws (occupational, health and

safety regulations, safety at work law and regulations for

NOTICE