Lennox eNeRGy Series Installation, Operating And Maintenance page 68

MAINTENANCE PLAN
Task
MAINTENANCE PLAN
Check economizer
actuator operation
Check tightness of all
electrical connections
Check HP safety switches
Check the value of the
analog sensors
Check the position of all
sensors
Check and clean if
necessary all fresh air
grids
Check electric heater
element for excessive
corrosion
Check anti-vibration
mountings, for wear and
tear.
Check Glycol
concentration in the HWC
circuit and/or in the water
condenser circuits
Gas burner module check
for corrosion
Sweeping and cleaning the
gas burner
eNeRGy-IOM-2020.12-EN
Operating mode
Check all fixings and transmission. Stop the unit using
the control. The fresh air damper must close. Start the
unit, the fresh air damper should open.
Make a forced opening and closure of the motorized
dampers.
Power down the unit and check and tighten all screws,
terminal and electric connections (including the
terminal boxes)
When turning on the unit, check the deterioration of the
electrical components with a thermal camera, with the
unit working at 100% of its power.
Install a pressure gauge HP and check if the safety
switches overall working.
Install the pressure gauge calibrated to check the analog
sensors.
Install a thermometer calibrated to control the sensors.
Check with a calibrated anemometer the flow rate
displayed by CLIMATIC
Check the position and fastening of all sensors and their
accessories (pressure tapping tube).
Check the fresh air grilles (if fitted). If dirty or damaged,
remove them from unit and clean with high pressure
water cleaner. Refit on unit once clean and dry.
Turn off the unit; Pull the electric heater out of the
heater module box and check the resistances of traces
of corrosion; Replace resistance as required;
Visually check anti-vibration mountings on compressors
and centrifugal fan. Replace if damaged.
Check the glycol concentration in the pressurized water
circuit. ( a concentration of 30% gives a protection
down to approx.. -15°C) check the circuit pressure
Pull out the burner to access the tubes
(refer to Gas burner section in the IOM)
Clean the in-shot burners and the blower wheel lightly
with a brush. Sweep the flue and flue box. Wipe-off the
dust from the housing of the motor. Clean combustion
air inlet louvers Pull-out baffles from the tubes, sweep
the tubes
CHECK FLUE BOX GASKET
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Monthly Half
Quarterly
Yearly
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