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8
Fan
Clean fan using a cloth moistened with kerosene or light solvent. Dry fan thoroughly using compressed air. Clean fan blades
at least every 500 hours of functioning.
Nozzle
Carefully remove nozzle from the nozzle fitting. Blow compressed air through the face of nozzle to free any dirt.
Air Filters (ill. 2)
Clean the air filter regularly, especially if the appliance is used in dusty environments. Remove filter end cover (1), wash air
intake filter (2) using a light detergent and dry it thoroughly before reinstalling. Replace air delivery filter (4) at least once a
year.
Ignition Electrodes
Clean, adjust and if necessary replace ignition electrodes every 300 hours of functioning. For electrode gap see illustration.
Pump Pressure Adjustment
Remove pressure gauge cap from filter end cover. Install a pressure gauge with a precision of at least 0.1 psi. Start heater and
read air pressure value. If necessary adjust pressure as follows:
Model
Air Pump Pressure(psi)
GRY-D 15 HU
4.1
GRY-D 20 HU
4.5
GRY-D 20 WU
4.5
GRY-D 28 WU
4.8
GRY-D 40 WU
5.8
GRY-D 60 WU
4.9
GRY-I 15 WU
4.4
GRY-I 25 WU
4.8
GRY-I 40 WU
4.9
Electrical
A periodic inspection of cables, electrical parts and connections by qualified personnel is recommended
.