Gardner Denver Elmo Rietschle C-VLR 60, Manual

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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