WittRock Integris 2002, Service Manual, Page: 48 / 452

2.8 Low Voltage Controller Is Not Operating the Patient Light
Chapter 2: Troubleshooting Procedures
2.8 Low Voltage Controller Is Not Operating the Patient Light
1. The involved building circuit breaker is in the ON position.
Yes No
↓ →
Reset the circuit breaker to the ON position.
2. If so equipped, the Integris® 2002 Headwall System circuit breaker is in
the ON position.
Yes No
↓ →
Reset the circuit breaker to the ON position.
3. Press the indirect/read light switch. The indirect light turns ON.
Yes No
↓ →
Go to step 6.
4. Press the indirect/read light switch. The read light turns ON.
Yes No
↓ →
Go to step 6.
5. Go to “Final Actions” on page 2-5.
SHOCK HAZARD:
Set the involved circuit breaker to OFF. Lock out and tag out the
breaker. Failure to follow this procedure could cause serious personal
injury and damage to the equipment.
6. Locate the involved building standard or emergency circuit breaker panel.
Set the involved circuit breaker to OFF. Lock out and tag out the breaker.
7. The resistance between the output leads of the low voltage controller are as
shown in (see table 2-1 on page 2-16).
Table 2-1. Low Voltage Controller Resistance
If the voltage is The resistance should be Acceptable variation
120 500 ohms ± 100 ohms
240 1800 ohms ± 100 ohms
277 2500 ohms ± 100 ohms
Yes No
↓ →
Replace the low voltage controller (refer to procedure 4.14).
Page 2 - 16 Integris® 2002 Headwall System Service Manual (man142rb)