2.4 The Knee Up Function Does Not Work
Chapter 2: Troubleshooting Procedures
Century+™ Bed Service Manual (man241) Page 2 - 29
2
Yes No
↓→Go to step 15.
5. Replace the knee motor (B) (see figure 2-7 on page 2-28) (see “Head or
Knee Motor” on page 4-18). The knee up function now works properly.
Yes No
↓→Go to step 27.
6. Go to “Final Actions” on page 2-7.
7. Perform the following:
a. Set your VOM to read volts AC.
SHOCK HAZARD:
Use extreme care when checking live voltage. Do not touch live
terminals, wires, or ground. Failure to use caution could result in
serious electrical shock injury.
b. At P1, measure the voltage between common (pin 1) and 32V (pin 3)
(see figure 3-4 on page 3-5).
c. The voltage is 32V AC +3V.
Yes No
↓→Go to step 10.
8. Perform the following:
a. Set your VOM to read volts AC.
SHOCK HAZARD:
Use extreme care when checking live voltage. Do not touch live
terminals, wires, or ground. Failure to use caution could result in
serious electrical shock injury.
b. At P1, measure the voltage between common (pin 1) and 12V (pin 2)
(see figure 3-4 on page 3-5).
c. The voltage is 12V AC +3V.
Yes No
↓→Go to step 12.
9. Go to step 27.
10. Reset the circuit breaker on the transformer box. The knee up function now
operates normally.
To Next Page
Loading...
