automatically return to standby mode.
8.If prime is not established during the four minute pump prime mode, return to step 5 to
9.Terminate the call for heat, and the control will resume normal operation.
to limit accumulation of unburned oil in the combustion chamber.
◦To reset, hold the button down for 15 seconds until the red light turns off and the yellow light turns on.
◦Always verify the control functions according to all specifications before leaving the installation site.
◦Replace the control if it does not operate as specified.
Cad Cell Resistance Measurement
If the Beckett 7505 control is equipped with the GeniSys Display Module, part 52067U, the cad cell resistance can be selected and read on the LCD screen. Also, the GeniSys Contractor Tool, part 52082U, can be used for this purpose.
If these are not available, the cad cell leads can be unplugged from the control and the resistance measured with a meter in the conventional way.
Conduct these tests with flame present.
Flame Detection Range
Normal (0 - 1600 ohms)
Limited (1600 ohms to lockout)
Resetting From Restricted or Hard Lockout
Fire & Smoke
Hazard
Before starting or resetting the control from restricted lockout state, troubleshoot the heating system for the root cause(s) of the lockout.
•Make necessary repairs or adjustment to ensure a safe start condition.
•Ensure that the appliance is free of oil and oil vapors before starting or resetting the burner.
◦If the control continues to lock out without a satisfied call for heat, or fails the motor relay check, the control enters Hard (restricted) Lockout in order
Disable Function
◦Any time the burner is running, press and hold the reset button to disable the burner. The burner will remain off as long as the button is held.
Maintenance
Oil heating systems require annual service performed by a qualified, professional service agency. The 7505 primary control should be inspected during this service routine according to the following checklist:
□NOTE: The 7505 control has no serviceable internal parts. Do not attempt to remove cover.
□Inspect the exterior of the control. Replace the control if there is any sign of impact damage, water or corrosion.
□Use a multimeter to test the line voltage at control L1 and L2. It should be 102 - 132 Vac.
□Inspect all external wiring for secure connections and verify insulation integrity.
□Verify the control lockout and operation sequence, (Reference Startup/Checkout section).
□Observe a full operating cycle to prove the sequence and timings are correct.
□Replace any control that does not meet listed specifications with an equivalent replacement unit.
120v GeniSys Control Installation and Operation Manual | 11 |
