M A I N T E N A NC E
Page 39
AT T E N T I O N !
If a hoist is operated with a service unit,
this should not be mounted further
than 5 m away from the hoist.
The service unit consists either of two elements, filter
controller and oiler, or of the filter controller only.
C H E C K I N G A N D A D J U S T I N G
T H E F I LT E R CO N T RO L L E R
* )
The filter controller is set to an actual pressure of
5.4 bar (3.6 bar) in the factory (actual pressure with
motor running).
In this setting, the manometer can indicate a pressure
of over 6 bar (4 bar) with the motor switched off.
For correct adjustment, a pressure of at least 7 bar (5 bar)
upstream of the service unit is required.
Lift the regulator knob.
Turn the regulator knob until the manometer
indicates a pressure of 5.4 bar (3.6 bar).
Clockwise: higher pressure
Anti-clockwise: lower pressure
Lock the regulator knob by pressing it down.
Alternatively, the filter controller can be set to a pres-
sure of 6 bar (4 bar) in the absence of an air stream.
This setting is only correct for a pressure of at least
7 bar (5 bar) upstream of the service unit.
Depressurise the air line downstream of the service
unit and close it again.
Turn the regulator knob anti-clockwise, in order to
release the adjusting spring.
Turn the regulator knob until the manometer
indicates a pressure of 6 bar (4 bar).
Clockwise: higher pressure
Anti-clockwise: lower pressure
Lock the regulator knob by pressing it down.
If the nominal pressure of 5.4 bar (3.6 bar) cannot be
achieved despite a sufficiently high pressure upstream
of the service unit, then the air line cross-section is
too small.
* )
Values for 4-bar hoists in brackets
Filter regulator and oiler
S E R V I C E U N I T
