Cleaning And Annual Maintenance - Space-Ray ADU25 Installation And Operation Instruction Manual

15.0)

CLEANING AND ANNUAL MAINTENANCE

This heater must be cleaned and serviced annually by a qualified contractor before the start of each heating
season and at any time excessive accumulation of dust and dirt is observed. Maximum heating efficiency and
clean combustion will be maintained by keeping the heater clean.
It is essential that at least once a year, preferably before the heating season, a qualified person service the
appliance. In exceptionally dirty conditions, more frequent servicing may be desirable.
IMPORTANT:
Do not rest anything, especially ladders, against the appliance.
a.
Gas and Electricity supplies must be isolated before commencing servicing work or replacement of
b.
components.
On completion of a service/fault finding task which has required the breaking and remaking of electrical
c.
corrections, the following checks, using a multi-meter must be made.
The contractor shall check the following during periodic maintenance.

Clearances to combustibles: Check that clearances are being maintained. Make sure there are no
flammable objects, liquids or vapors near the heater. See also Section 4.0).

Reflectors: Reflectors should be kept clean, at a minimum blow off the reflectors. (Dirty reflectors will
reduce heat output).

Heat exchanger tubes: Inspect the heat exchanger tubes to make sure they are not cracked, sagging or
showing signs of fatigue.

Combustion air intake: Disconnect combustion air intake from the control box and inspect internally using a
flashlight to make sure no foreign material has collected in the tubes and that there is no obstruction
around the air intake openings. Clean any foreign materials. Inspect any joints to make sure they are
completely sealed. See also Section 13.

Venting System: Disconnect vent pipe and inspect internally using a flashlight to make sure no foreign
material has collected in the pipes. Check the external vent cap and make sure that there is no obstruction
around the exhaust openings. Clean any foreign materials. Inspect any joints to make sure they are
completely sealed. See also Section 13.

Gas lines: Make sure that the gas lines are not leaking. Check the gas connection to the heater for any signs
of damage, fatigue or corrosion. If there are any signs of damage to the gas connection or leaks found in the
gas piping, immediately stop using the heater until the gas pipe and connections have been repaired or
replaced. Check that the gas lines are not bearing the weight of the heater. See also Section 11.

Burner Box: In order to extend the longevity of the heater, the heat exchanger tube and the burner must be
level. Check that the burner box is level; use the turnbuckle on the burner suspension eyebolt to adjust the
level of the burner. See also Section 9.1.

Blower wheel and housing: Check that the blower wheel spins freely, blow out any dust or dirt with
compressed air.

Electrode condition: Visually check that the electrode gap is maintained at 3.5mm and that the tips of the
flame sensor and spark electrode are free from deposits. Clean off any deposits. Check that the electrode
ceramic is free from cracks. See Section 18.1.

Suspension system: Check that the suspension system is holding the heater level. Make sure that the heater
is hanging securely, look for any evidence where the heater may have been hit accidentally and tighten any
loose hanging points. Check that S hooks are closed. Check that there is no evidence of wear on the chain at
the connection to the heater and at the ceiling.
Form #4420110
Oct 2019
1. Earth continuity check
2. Polarity check
3. Resistance to earth check
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