Harsco Industrial 1004905923, Installation & Owner'S Manual

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MODU-FIRE
®
Forced Draft Gas-Fired Boiler 2500-3000
33
5 MAINTENANCE
All weekly, monthly and annual maintenance checks should be performed by experienced and
knowledgeable personnel.
Installation and service must be performed by an experienced and knowledgeable
individual, such as a Harsco Industrial, Patterson-Kelley representative, qualified installer, service agency or
gas supplier.
Proper lockout /tagout procedures must be employed when servicing this unit.
A hazard analysis should be performed by the end user to insure the safety of their employees and/or service
technicians.
5.1 M
AINTENANCE AND
I
NSPECTION
S
CHEDULE
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
Observe operating temperature and general conditions. Make sure that the flow of combustion and ventilating air
to the boiler is not obstructed. Determine the cause of any illuminated red indicators, unusual noises or operating
conditions and make the necessary corrections.
Check daily to be sure that the boiler area is free and clear of any combustible
materials, including flammable vapors and liquids.
5.1.2 Weekly
Observe the conditions of the main flame. A normal high fire flame shows an orange screen with a blue halo. In
Low fire the burner should display a reddish orange glow. However, do not attempt to adjust the flame “by eye”.
Correct air adjustment is essential for the efficient operation of this boiler. If an adjustment to 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.
5.1.3 Monthly
1. Using the control panel, enter the information mode and scroll down to view the flame signal. When the boiler
is firing, the signal will be “yes” and when the boiler is not firing, the signal will be “no”.
2. Test high-limit control by reducing setting below the operating temperature. Burner should shut off. After
readjusting the thermostat, press the button to reset the switch.
3. Test operating temperature control by reducing temperature setting as necessary to check burner operation.
4. Check flue gas temperature at outlet. If there is a temperature increase over previous readings, the probable
cause is soot or water-scale build- up on the tubes.