───────────────────────────────────────────────────────
PROBLEM #1 (continued)
1. Chair or lift will not operate (continued).
PROBABLE CAUSE
TESTING PROCEDURE
CORRECTIVE ACTION
10c. If there is a
10c. Remove and
eading on both
replace
switch legs in
applicable
l0b above, the
motor.
motor is faulty.
11. Broken chain
11.
If manual control
11.
Replace
or sheared
for lift or foot
chain.
pin in
control is
motor
activated and
sprocket.
motor runs but
Remove and
lift does not
replace pin on
raise, failure is
motor
due to either a
sprocket.
broken chain or
pin on motor
sprocket sheared.
Visual inspection.
12. Bent or
12.
Visual
12.
Remove and
broken lift
inspection.
replace lift
control
control
switch.
switch.
13. Faulty motor
13.
If motor hums
13.
Remove and
for capacitor.
when manual
replace motor
control or foot
and/or
control is used
capacitor.
to operate lift,
capacitor or
motor is faulty.
MD0373
A-5