CRANEX
®
Novus e 4. Troubleshooting
Service manual 71
CAUSE C
The side control panel (up/down keys) has failed
SOLUTION C
If D2 and D3 on L1600 do not come on when the up/
down keys are pressed it indictes that the side control
panel or the cable from the control panel are faulty and
must be replaced.
CAUSE D (Unlikely)
The Z-movement end microswitch (top or bottom has
failed) and the mechanical Z-movement end stops have
stopped the Z-carriage.
SOLUTION D
Check to see if D3 on L1600 is on. If on it indicates that
the top or bottom Z-movement end microswitch has not
been activated.
CAUSE E
The autotransformer internal thermal switch has
opened. The thermal switch will open if the winding
temperature goes over 110°C.
SOLUTION E
There is a probably a short circuit inside the transformer
winding that has caused it to overheat.
Replace the transformer.
CAUSE F
The Z-motor internal thermal switch has opened. If the
unit is driven up and down for a long period time the
Z-motor can overheat and cause the thermal switch to
open.
SOLUTION F
Wait for the Z-motor to cool down and the thermal
switch to close.
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