36
GKNE-SVX001B-EN
Maintenance
Periodic Service
All Maintenance/Service information should be recorded
accordingly on the Inspection Sheet provided in this
manual.
To check gas tightness of the safety shut-off valves, turn
off the manual valve upstream of the appliance
combination control. Remove the 1/8 inch pipe plug on the
inlet side of the combination control and connect a
manometer to that tapping. Turn the manual valve on to
apply pressure to the combination control. Note the
pressure reading on the manometer, then turn the valve
off. A loss of pressure indicates a leak. If a leak is detected,
use a soap solution to check all threaded connections. If no
leak is found, combination control is faulty and must be
replaced before putting appliance back in service.
Should maintenance be required, perform the following
inspection and service routine:
1. Inspect the area near the unit to be sure that there is no
combustible material located within the minimum
clearance requirements listed in this manual.
2. Turn off the manual gas valve and electrical power to
the unit heater.
3. To clean or replace the burners, remove burner cover.
Remove top strip from above burners. Lift burners up
and pull away from manifold to remove.
4. With the burners removed, wire brush the inside
surfaces of the heat exchanger.
5. Remove any dirt, dust, or other foreign matter from the
burners using a wire brush and/or compressed air.
6. Inspect air inlet for blockage/debris. Clear any if found.
7. Reassemble the unit heater by replacing all parts in
reverse order.
8. Check the burner adjustment.
9. Check all gas control valves and pipe connections for
leaks.
10. Check the operation of the automatic gas valve by
lowering the setting of the thermostat, stopping the
operation of the gas duct furnace. The gas valve should
close tightly, completely extinguishing the flame on
the burners.
11. Inspect and service motor/fan assembly. To maintain
efficient air flow, inspect and clean the fan blades and
guard to prevent buildup of foreign matter.
12. Check motor lubrication. If oiling is required, add 1 or
2 drops of electric motor oil as follows:
a. Light Duty - After 3 years or 25,000 hours of
operation.
b. Average Duty - Annually after 3 years or 8,000 hours
of operation.
c. Heavy Duty - Annually after 1 year or at least 1500
hours of operation.
13. Check and test the operational functions of all safety
devices supplied with your unit.
NOTICE
The heater and vent system should be checked once a
year by a qualified technician.
WARNING
Open all disconnect switches and disconnect all
electrical and gas supplies and secure in that position
before servicing unit. Failure to do so may result in
personal injury or death from electrical shock.
WARNING
Gas tightness of the safety shut-off valves must be
checked on at least an annual basis. Failure to do so
may result in death, serious injury or substantial
property damage.
WARNING
Under no circumstances should combustible material
be located within the clearances specified in this
manual. Failure to provide proper clearance could result
in personal injury or equipment damage from fire.
CAUTION
Never over oil the motor or premature failure may
occur! Over oiling the motor may result in minor injury
or property damage.
