Nu-Way MGN 2800N, Инструкция по установке и обслуживанию

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MGN 2800N HP 23
F
AULT
F
INDING
Any modifications to the installation or component settings resulting from actions suggested below
may require the re-establishment of the various settings as indicated earlier in this manual.
Burner Motor Fails To Start
Check:
• that the electrical supply is available and the burner is correctly wired.
• all fuses for continuity and size.
• all control instruments are “calling for heat”.
• the gas train is electrically connected.
• the control box is not locked out (e.g. signal lamp faulty). (If the control box is locked out, press the
reset button).
• there is sufficient gas pressure.
• the air pressure switch is in the “start” position, as follows: -
Switch off the electrical supply. Remove the plug-in assembly from the control box base. Check for
continuity between the following terminals:
Satronic TMG 740 - Terminals 17 & 16
Landis & Staefa LFL 1.3 - Terminals 4 & 13
If the air pressure switch is not in the start position, turn the setting dial clockwise. If no continuity is
obtained, the air pressure switch is faulty and must be renewed.
Starting Flame Failure Without Ignition
Check:
• The glass envelope of the UV cell is clean and correctly positioned.
• The UV cell and its wiring.
• The air pressure switch is set correctly.
• The electrode is correctly set and the porcelain is not cracked.
• The ignition transformer is not faulty.
• The control box is not faulty.
Starting Flame Failure Without Flame
If the start rate flame is not properly established, the safety circuit of the sequence controller will
cause lockout in one second.
The cause may be insufficient signal to the flame detection device. Alternatively the flame signal
check link has been removed, or insufficient gas to allow the flame monitoring device to take over and
signal the sequence controller to continue its cycle.