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Malfunctions: Causes and elimination
Malfunction
Cause
Elimination
Note
Suction capacity is in-
sufficient (continued)
Solenoid valve opens too early Adapt limit value of solenoid
valve (it is too near to the set-
point value).
Suction capacity is
insufficient and pump
runs at maximum
speed
Too high demand.
Reduce number of consumers
or check system for leaks
–
Final pressure (max.
vacuum) is not
reached
Machine or system leaking
Check the pipework and screw
connections for leaks and
check for tight fit
Chapter 7.2
Pump gets too hot
Ambient or inlet temperatures
too high
Ensure proper use
Chapter 2.3
Cooling air supply is
obstructed
Check ambient conditions
Chapter 5.1
Clean ventilation slots
Chapter 7.2
The machine makes a
strange noise
Deposits on the rotary piston
Clean the working space and
the rotary piston
Elmo Rietschle
Service
Pump switches off
Pump starts too fast and re-
ports error
Check run-up time, depends
on demand
–
Pump gets too hot
Check number of starts/stops
Maximum pressure exceeded
Wait until pressure has
reached the maximum value
and restarts automatically.
–
Display remains dark
Power supply of display
disconnected
Check voltage of display
Check the fuse in the control
box and replace, if necessary
Check the switch-mode power
supply in the control box
–
Display defective
Replace display
Elmo Rietschle
Service
Utilisation continuous-
ly at 100%
Pump capacity too low
Install a pump with higher
capacity
Elmo Rietschle
Service
Machine or system leaking
Check the pipework and screw
connections for leaks and
check for tight fit
Chapter 7.2
Utilisation continuous-
ly at 25 %
Pump capacity too high
Install a pump with lower
capacity
Elmo Rietschle
Service
If the malfunctions cannot be localised or eliminated by information provided in the table above,
please contact our customer service.
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
Tel. 071 918 60 60, Mail: [email protected]
