Market Forge Industries M24E, Руководство по эксплуатации и ремонту

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SEPTEMBER 2, 2014 7 M24E & M36E ELECTRIC BOILERS
WATER CONTROL BOARD TESTING PROCEDURE
Test Primary Low Water Function:
• Connect jumper wire to ‘LW(1) and‘GND’ terminals.
• ‘LED 2’ should turn on.
• Remove jumper wire from ‘LW(1)’ and ‘GND’ termi-
nals.
• ‘LED 2’ should turn off after a 3 second delay.
• Connect jumper wire to ‘LW(1)’ and ‘GND’ terminals.
• ‘LED 2’ should turn on.
IMPORTANT
Jumper wire between ‘LW(1) and ‘GND’ termi-
nals must remain in place to test secondary
low water function.
Test Secondary Low Water Function:
• Connect jumper wire to ‘LW(2)’ and ‘GND’ terminals.
• ‘LED 3’ should remain off.
• Use V-O-M to verify that there is power at the ‘LO
LlTE(NC)’terminal and no power at the ‘HTR(NO)’
terminal.
• Remove the jumper wires from the ‘RESET’ termi-
nals.
• ‘LED 3’ should turn on.
• Use V-O-M to verify that there is no power at the
‘LO LlTE(NC)’ terminal and power at the ‘HTR(NO)’
terminal.
• Connect jumper wire to ‘RESET’ terminals.
• Remove jumper wire from ‘LW(2)’ and ‘GND’ termi-
nals.
• ‘LED 3’ should turn off after a 3 second delay.
• USE V-O-M to verify that there is power at the ‘LO
LlTE(NC)’ terminal and no power at the ‘HTR(NO)’
terminal.
• Connect jumper wire from ‘LW(2)’ and ‘GND’ termi-
nals.
• ‘LED 3’ should remain off.
IF ANY OF THE FUNCTIONS DO NOT WORK, RE-
PLACE THE BOARD!
IF ALL FUNCTIONS WORK, TROUBLE-SHOOTING
OTHER COMPONENTS WILL BE REQUIRED!