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16/05/2019
R05.0
5
Maintenance Instructions
An HLF-M type linear conveyor requires minimal maintenance. Depending on the man-
ner in which it is used, signs of wear may occur, which can be compensated for by reset-
ting the adjustment plates.
Spring wear/ oxidation (increased resonance frequency)
Depending on the operating mode and environment, a layer of oxidation may develop on
the springs at the contact surfaces which over time may adversely affect the vibration
behavior. In cases such as these, the resonance frequency will increase and it may be
necessary to compensate for the increase by lowering the adjustment plates.
Spring setting behavior (reduced resonance frequency)
The result of longer storage periods may be that installed springs can show a setting be-
havior, and in consequence a reduction in the spring stiffness and reduced resonance
frequency. In this case, the resonancy frequency can be re-calibrated, which may cause
the spring stiffness to be reduced as well as a drop in the resonance frequency.
In some cases, it may be necessary to remove the leaf springs to clean them or, if they
are heavily worn, to replace them entirely. Here, the vibration parts must be supported in
vertical direction. Then, only one spring package at a time may be removed, because
otherwise the vibration parts would move, making it impossible to guarantee that they
function properly.
CAUTION
The leaf springs must not be oiled or greased as this would make
the springs sticky and in turn adversely affect the vibration re-
sponse.
5.1
Troubleshooting
Conveyor does not run, there is no vibration detectable
Cause of fault
Fault repair
Supply voltage too low or instable, e.g.
only 180 V
Check the supply voltage, readjust the conveyor to
the existing supply voltage, if necessary
Connection to the power supply interrupt-
ed
Check the connection between drive control unit and
control mains adapter
Control unit is switched off <0>
Switch on the control unit <1> or check the jam con-
trol signal if a jam control is used
Control unit is defective
Electrical check of the device, use an exchange or a
replacement unit
The magnet is damaged, the field winding
has burnt out
Electrical check of the magnet, replace damaged
magnet. Check settings: 50 Hz position, full wave
(exciting frequency = 100 Hz)
The air gap between magnet and rotor is
too small (striking) or too large
Set the air gap according to the operating manual
