SEELEY INTERNATIONAL AIRA DU SD Series, Инструкция по установке и эксплуатации

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DU/SD SERIES INSTALL OPERATION MAINTENANCE MANUAL | 51
APPENDIX F: MAINTENANCE
APPENDIX F3: MAINTENANCE CHECKLIST
Maintenance Check List
Unit Type: ______________________ Date of Maintenance: ___________________
Description Component Check For
C=Clean
R= Replace
A= Adjust

= Check
N/A= Not Required
Electrical
Incoming electrical
supply
Visually inspect incoming electrical supply
and isolation for signs of damage. If any major
upgrades have been installed to the site confirm
that there is sufficient power for unit operation.
Electrical wiring
Check wiring in control box. Replacing any
damaged or loose wires.
Isolator fitted and
operating
Check isolator switch for signs of damage.
Confirm that switch isolates unit.
Single or 3 phase
power test
Test and record incoming voltage to unit.
Overtemp Control
Check that overtemp control is correctly fitted and
secure.
Check that overtemp activate at the specified
temperature and that the fan continues to run at to
sufficiently cool the unit.
Thermostat
connected and
operational
Changing temperature on the thermostat it
reflected on the control box RLU.
Fan Motor Refer to manufactures specifications
Belts and pulleys
visual inspection
Check belts and pulleys for signs of wear and
damage. Check for rubber deposits and if belts
have a glazed or slick look. Replace if required
Belts and pulleys
thorough inspection
Check alignment of pulleys. Check tension of
belts. Replace if required
Fan obstructions and
direction
Check fan is clear of any foreign objects. Confirm
fan is operating in correct direction
Damper Operation
Check temperature rise across the heat
exchanger. Check that dampers are locked in
correct position.
Gas
Incoming Gas Supply
Visually inspect incoming gas connection for
signs of damage. Check that the site gas shut
off valve is in good working condition and easily
accessible. If any new gas appliances have been
installed confirm that there is sufficient gas for unit
operation.
Gas connections
visual inspection
Visually inspect the gas piping to and within the
unit. A leak detection solution should be used on
gas fittings.
Gas isolation fitted
and in good condition
Check gas isolation valve successfully isolates the
unit.
Gas Supply Pressure Check incoming supply pressure against unit label
Gas Burner Pressure
(High/Low)
Check burner operation with the gas valve set to
the high and low operating pressures.
Gas Injectors
Check that the correct injectors are installed and
free of debris. Clean or replace if required.
Draft Diverter Check for damage, rust and debris.
Pilot Assembly
Check that the assembly is secure. Check that
flame sense sparker wiring is free of damage and
terminated correctly. Check that the pilot line is
free of damage. Clean pilot injector
Burner operation and
combustion
Clean burners. Check that the pilot lights. Check
that the all burners light. Check the burners
produce a consistent flame.
Flue Operation
Check flue for debris. Check that the rain collar is
securely fitted.
Leaving Air Sensor
Check the leaving air temp reading on the RLU vs
temperature measured with a digital thermometer.