Service Instructions
Multimobil 5C
Siemens Ltd. Med India
Version 5.0
Page 49 of 73
Copyright
©
SIEMENS LTD. All rights reserved. For internal use only
Sr. No.
Troubles
Causes Remedies
of motor
Change motor if
required
5
C-Arm brakes fail
Tension
rod
broken
Or
Lever slipped
from the brake
shoe.
1. Open the Trag arm
assembly and fit the
new tension rod
2. Open the Trag arm
and fix the lever to
the brake shoe.
In case of any problems, follow the below mentioned procedure.
¾
Check whether it is an electrical problem or a mechanical problem.
¾
The electrical problems can be such as loose contacts, removal of wire from the
limit switch or contactor etc.
¾
If it is a mechanical problem, it could be any one of the above mentioned. In such
case trace the problem in the following way.
NOTE:
The solutions are listed out in steps for rectifying up down movement of the
column. One must follow the procedure and stop at the particular point where he gets
the solution or remedy.
1. First of all, lift the unit up and place some wooden blocks below the rear wheels so
that there is sufficient access to work from under side.
2. Check whether the V-Belt is in good condition and is not broken.
3. Try to rotate the main pulley manually and see whether it is free and not getting
stuck. Power on the motor and give a few jerks. Now try to move the column up
and down. See whether you can get a smooth movement. If the movement is fine,
you can stop at this stage. The cause of problem could have been some fine rust
or dirt particles, which might have got stuck in the spindle threads.
4. If the pulley has got stuck completely and does not move freely, then the tube
assembly has to be dismantled. This case only occurs when the limit switch fails
and the unit goes to the maximum upper limit or to the minimum lower limit.
5. In case the unit reaches the maximum upper limit, the safety nut locks the spindle
and stops any further movement, hence preventing the machine from falling on to
the patient. In such case the complete tube and column assembly has to be
dismantled and reassembled using new spindle (if required i.e. if the threads are
not damaged, the same spindle can be used)
6. In case, the lower limit switch fails, the column moves to the minimum lower limit,
the guide hits the bottom stopper, upwards thrust is developed and the universal
bearing comes out of the bearing holder, pulling the pulley close to the base frame
and the movement gets stuck.