Patterson-Kelley THERMIFIC MODU-FIRE, Supplement Manual

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Modu-Fire
®
Gas-Fired Boiler Maintenance
5.0 MAINTENANCE
5.1 M
AINTENANCE AND
I
NSPECTION
S
CHEDULE
CAUTION!
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation.
Verify proper operation after servicing.
5.1.1 Daily
(Refer To TBIG Latest Edition)
5.1.2 Weekly
Observe the conditions of the pilot and main flame.
A normal High fire flame is blue. If the flame is
yellow, then corrective action must be taken. In
Low fire the burner will glow a yellowish orange.
Correct air adjustment is essential to the efficient
operation of this boiler. If an adjustment in the
combustion is necessary, the flue gas composition
should be checked with a carbon dioxide (CO
2
) or
oxygen (O
2
) analyzer to set conditions. Refer to
Section 3.12.2 and 3.12.3.
5.1.3 Monthly (During Operation)
(Refer To TBIG Latest Edition)
5.1.4 Semi-Annually
(Refer To TBIG Latest Edition)
5.1.5 Annually
(Refer To TBIG Latest Edition)
5.2 C
LEANING THE
B
URNER
(Refer To TBIG Latest Edition)
5.2.1 Semi-Annual Cleaning
1. Remove mixer core.
2. Use low pressure air, Max. 20 psig inside the
burner to remove any accumulated dust or lint
build-up.
5.2.2 Annual Cleaning
1. Disconnect the union in the line at the burner.
2. Disconnect pilot and vent line, being careful not
to disturb the position of the pilot.
3. Loosen and remove the four (4) hold down bolts
and washers.
4. Carefully remove the burner.
5. Use low pressure air, max. 20 psig inside the
burner to remove any accumulated dust or lint
build-up.
6. Check that the ceramic portion of the ignition
electrode is not cracked.
Arc must not
strike burner.
Pilot
Tube
Ground
Rod Igniter
Burner
Grid
7. Check the position of the ignition electrode:
3/32” – 1/8” spark gap. Check the tightness of
the electrode clamp.
8. Use a soft, clean cloth to remove accumulated
contaminants from the UV radiation tube (UV
scanner) glass envelope.
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