Gardner Denver Elmo Rietschle twister S Series, Operating Instructions Manual

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Malfunctions: Causes and elimination
8 Malfunctions: Causes and elimination
Malfunction Cause Elimination Note
Machine is switched
off by the motor pro-
tection switch Mains voltage/ Frequency
does not correspond with
the motor data Check by qualified electrician Chapter 5.6
Connection to motor ter-
minal board is not correct
Motor protection switch is
not set correctly
Motor protection switch is
triggered too quickly Use a motor protection switch
with an overload-dependent turn-
off delay that considers the short
excess current at start up (version
with short circuit and overload
trigger as per VDE 0660 Part 102
or IEC 60947-4-1)
Suction capacity is
insufficient The mesh filter is plugged Clean / replace the mesh filter Chapter 7.2.2
Chapter 7.4
The inlet pipe is too long or
too narrow Check the hose and/or the pipe Chapter 5.4
Machine or system leaking Check the pipework and screw
connections for leaks and check
for tight fit Chapter 7.2
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
Not enough cooling water Observe cooling water
consumption Chapter 9
The mesh filter is plugged Clean / replace the mesh filter Chapter 7.2.2
Chapter 7.4
Machine gets too
hot Ambient or inlet tempera-
tures too high Ensure proper use Chapter 2.3
The cooling water system is
obstructed Check the cooling water system
and the inlet pipes Chapter 7.2.3
Not enough cooling water Observe cooling water
consumption Chapter 9
Cooling water inflow is too
hot Observe the max. inlet
temperature Chapter 9
The machine makes
a strange noise Deposits on the rotors Clean the working space and the
rotors Elmo Ri-
etschle
Service
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.