Component Tests 1 - 4 - Rheem 441 Series Service Instructions Manual

Component Tests 1 - 4

Test 1
Normal resistance between the tank and the earth
point on the ECB is 0 ohms (dead short) when
measured with a multimeter on the x1 resistance
scale.
Test 3
Install RCD and exercise caution when
conducting live tests
741/751 series
Normal voltage at the solenoid under load should
be between 6 and 12 volts when measured with a
multimeter on the DC voltage scale.
761, 771/781 and 791 series
Normal voltage at the solenoid under load should
be between 8 and 24 volts when measured with a
multimeter on the DC voltage scale.
Lazer 441, 451, 741, 751, 761, 771, 781 & 791 Service Instructions
REV AD. Issue 02/01/14
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Test 2
Normal resistance between the high level
probe wire and low level probe wire should
be infinity (open circuit) when measured with
a multimeter on the x10M resistance scale.
Test 4
741/751 series
Normal resistance of the solenoid coil should
be 23 ohms +/- 5% when measured with a
multimeter on the x1 resistance scale.
761, 771/781 and 791 series
Normal resistance of the solenoid coil should
be 55 ohms +/- 5% when measured with a
multimeter on the x1 resistance scale.
Service. All printed copies are deemed "uncontrolled"
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