Service Procedure Ii: Line Voltage Testing - Bradford White ElectriFLEX HD CEHD 50 Service Manual

Line Voltage Testing
Line voltage (single or three phase) will connect to a
terminal block located inside the control panel.
Determine heaters voltage and phase by referring to the
rating plate located on the front of the heater. Apply the
appropriate phase procedure below to determine if
proper line voltage is present.
Single Phase Line Voltage Testing
1. STOP. DANGER! Turn power "OFF" to water heater.
2. Open Control Panel door.
3. Determine connection point for line voltage from
service panel to terminal block.
4. Set multi-meter to volts AC. Be sure to scale meter
for appropriate voltage.
5. Use caution and turn power "ON" to water heater.
6. Use caution and check voltage across top terminals
where service voltage connects to water heater.
(see illustration 3)
A. Rated voltage IS present, power to
the water heater is okay.
B. Rated voltage NOT present, Check
service panel.
Three Phase Line Voltage Testing
1. STOP. DANGER! Turn power "OFF" to water heater.
2. Open Control Panel door.
3. Determine connection point for line voltage
from service panel to terminal block.
4. Set multi-meter to volts AC. Be sure to scale
meter for appropriate voltage.
5. Use caution and turn power "ON" to water
heater.
6. Use caution and check voltage across top
terminals where service voltage connects to
water heater. (see illustration 4)
A. Rated voltage IS present, power to
the water heater is okay.
B. Rated voltage NOT present, Check
service panel.
Service Procedure II:
Line Voltage Testing
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WARNING
High voltage exposure. Use caution when making
voltage checks to avoid hazard to life or property.
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