Bcx Original Manual Control Delime Sept 2010 - Blodgett BCX14G Troubleshooting Manual

BCX Original Manual Control Delime Sequence:
Step 1. The Logic Board Counts for 30, 60, or 90 hours (Set by R1 on the Logic Board), whenever LED 10, Boiler Heat On , output, is active
and LED 1, Flush Disable Thermostat is not active. It calls for Delime by flashing the Delime Light Output, LED 11 when LED 10 has been
on and LED 1 has been off for the set time .
Step 2. Once the unit is preheated in Steam Mode for 10 minutes, Open the door, turn the mode switch to Cool Down, Press and
Release the Steam on Demand button , and turn the mode switch to off. That process starts the automated delime process, causing LED
11 and the Delime Light to flash slightly faster. LED 11 stays on until the delime sequence is complete.
Step 3. LED 16, Delime Pump, is enabled, triggering LED D8 at the relay board causing the deliming chemical pump to run for 1 minute.
Step 4. After the Delime Pump LED 16 output is stopped, LED 10, Boiler Heat is enabled. (Because the Mode Switch is not in Combi, Hot
Air or Steam, there is no "oven on" signal and the signal is interrupted at CR1)
Step 5. To ensure the boiler is still full, the Boiler Fill Enable, LED 15 is on next, which triggers the LED D81 on the Relay Board, which
allows both floats to fill until satisfied. The Boiler fill enable signal continues for 1 minute.
Step 6. Now the Boiler sits to allow the chemical to work and LED 11 is still flashing. The boiler sits for 30 minutes until the next step.
Step 7. the Drain Output LED 14 is enabled next and LED D101 on the relay board indicates the Drain output is switched to Open. The
drain will be open for 1 minute allowing the scale, chemical and water to drain.
Step 8. Next the Logic Board outputs LED 15, Boiler Fill Enable, and the Relay Board outputs LED D81, and both floats can control the fill
solenoids until satisfied. The Output is on for 2 minutes.
Step 9. Now the boiler drain, LED 14 is enabled and the LED D101 triggers the drain to open. The drain will be open for 1 minute.
This is the end of the Delime sequence, but the Low Float will cause the unit to fill, by triggering the low water signal, which triggers the
logic board to output, LED 15 and the relay board to output D81. Once the water raises the low float the low water signal is terminated
and the unit waits to be turned on.
To Set the R1 Pot that controls the delime interval, which is the left small potentiometer below the EEPROM Chip on the logic board, 30
Hours is all the way turned counter clockwise, 90 Hours is all the way turned clockwise and 60 hours is in the middle.
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