20
Operation
– The switch-off sequence is specified by the controller.
Close exhaust valve (if present).
NOTICE
Roots pump damage due to the rotors starting up!
Differences in the rate of cooling of the pump housing and rotors can cause damage to
the pump.
If the pump / pumping station is switched off and at a standstill for > 5 minutes, then
only switch it on again after ventilation and a waiting period of at least 120 minutes to
allow a balanced temperature of rotors and housing.
