CLEAN BURN CB-200-CTB, Руководство оператора, Страница: 104 / 148

Coil Tube Boiler Operator's Manual: Models CB-200-CTB, CB-350-CTB, and CB-500-CTB
11-4
PROBLEM POSSIBLE CAUSE POSSIBLE ACTION(S)
Burner ignites, but will not stay running
and Burner shuts off on reset within 15
seconds.
1. There is a fuel delivery problem.
2. The cad cell is dirty.
3.
Cad cell wires are loose.
4. Cad cell / cad cell wires are
damaged.
5. The primary control is not
receiving the proper ohm signal
from the cad cell.
1. Follow the procedures listed in the
next problem.
2. Clean and check the condition of
the cad cell and cad cell wires.
3. Check that the yellow wires are
connected properly at the “F”
terminals on the oil primary
control.
4. Replace the cad cell and cad cell
wires. If the cad cell is heat
damaged: (a) Clean your boiler,
including the combustion
chamber, flues and stack. Refer
to instructions in Section 9. (b)
Check for backdraft caused by
exhaust fans in your building.
Follow instructions in Section 8.
5. Disconnect the yellow wires from
the “F” terminals. Start the burner
and check the ohm reading from
the cad cell. You have 10
seconds to perform this test
before the burner shuts off on
reset. Refer to Section 7 to reset
the oil primary control. If the ohm
reading is above 500 ohms: (a)
Check the position of the cad cell;
the cad cell must “look” straight
through the central hole in the
retention head. (b) Check the
position of the retention head
according to Appendix A.
Burner ignites and runs properly, but the
burner shuts off on reset periodically
(e.g. the burner goes off on reset during
the night and requires resetting in the
morning).
1. There is air in the suction oil line
due to leaks at the fittings
2.
There is air trapped in a high point
in the pressure oil line.
1. Follow the procedures in Section
5 to vacuum test the pump. Re-
install and properly seal the
suction line fittings to eliminate air
leaks.
2. Follow instructions in Section 4 to
bleed the air out of the pressure
oil line.