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© Gardner Denver Schopfheim GmbH, Gardner Denver Deutschland GmbH
Malfunctions: Causes and elimination
Error
Cause
Troubleshooting
Important
Machine is switched
off by the motor
protection switch
Mains voltage/ Frequency does
not correspond with the motor
data
Check by qualified electrician
Section 5.6
Connection to motor terminal
board is not correct
Motor protection switch is not
set correctly
Motor protection switch is trig-
gered too quickly
Use a motor protection switch
with an overload-dependent de-
layed switch off that takes into
consideration the short term ex-
cess current at start up (version
with short circuit and overload
trigger as per VDE 0660 Part 2
or IEC 947-4)
The control valve is
dirty so that
the permissible vacuum value is
exceeded
Clean or replace the control
valve
Section 7.2
Section 7.4
Suction capacity is
insufficient
The intake filter is dirty
Clean or replace the intake filter
Section
7.2.2
Section 7.4
The suction pipe is too long or
too narrow
Check the hose or the pipe
Section 5.3
Machine or system leaking
Check the pipework and screw
connections for leaks check for
tight fitting
Section 7.2
Final pressure (max.
vacuum) is not
reached
Machine or system leaking
Check the pipework and screw
connections for leaks check for
tight fitting
Section 7.2
Machine gets too
hot
Ambient or intake temperature
is too high
Ensure it is being used properly
Section 2.3
Cooling air supply is obstructed
Check ambient conditions
Section 5.1
Clean ventilation slots
Section 7.2
The control valve is dirty so that
the permissible vacuum value is
exceeded
Clean or replace the control
valve
Section 7.2
Section 7.4
The machine makes
a funny noise
Deposits on the rotary piston
Clean the working space and
the rotary piston
Elmo Ri-
etschle Ser-
vice
The control valve is vibrating
Replace the valve
Section 7.4
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.
8
Malfunctions: Causes and elimination
Содержание Elmo Rietschle C-VLR 100
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