Technical manual August 2009
Rev: 01/08/09
Page:
10
Mechanical Systems
6.
The charger system does not work
The hoist charger system has six components: a switched fused spur, Transformer,
charging station end stop, charger plates, wiring harness and circuit board.
•
Check to see that power is coming into the transformer: this can be done by measuring
the output voltage across the 2 stainless steel strips with a multimeter.
•
Check to see that the charging strips of the charging station (bent in a wave pattern
with the middle section tensed and clear) make contact with the stainless steel contacts
on the trolley block.
•
Check the correct rated fuse has been fitted to the switched fused spur (min 2 amp,
max 3 amp).
•
Check the board by plugging the charging beak into a replacement board.
7.
The on/off buttons (and/or emergency lowering buttons) on the hand control and the
hoist do not work
•
Simultaneous failure of the pneumatic and electrical systems strongly indicate a circuit
board failure. Confirm this by hooking a replacement board. In the case of emergency
lowering, if the replacement board does not resolve the problem, the fault is in the
“slack tape” lower limit switch. (See point #1 ‘If the hoist goes down to the end of the
strap and then goes up again with up and down functions reversed.’)
