12
40.020.941 - rev. 04 - 2011
AT 300-US series
English
5.2
General
When the heater is stored long-term:
1.
Switch off the heater.
2.
Disconnect the power plug.
3.
Clean the heater.
4.
Use an oily cloth to clean the combustion
chamber, to protect the combustion
chamber against corrosion.
5.3
Cleaning the combustion chamber
AT 306(fig. 10)
1.
Remove the afterburner (A), the cylinder
(C) and the upper ring (D).
2.
Clean the parts with a steel brush.
3.
Remove the burner dish (E) with the hook
of the shovel (F).
4.
Scrape off residues from the burner dish
with a scraper.
Clean the oil overflow pipe in the floor of the combus-
tion chamber, see fig. 4 (G) for AT 306 and see fig. 6
(G) for AT 307.
X
Clean the oil supply pipe.
Replace the oil supply pipe when this is burnt out or
damaged.
X
Check the oil pipes for leakage.
X
Clean the fuel tank, the supply filter and the fuel filter.
The fuel tank can easily be removed.
X
Only for the AT 307: Check the hot air fan and clean if
necessary.
X
Clean the flue stack valve in the T-piece, see fig. 9 (A).
The recommended draught is 1.5 mmwk (0.06” water
column).
Dealer
Clean the flue stack T-piece, see "cleaning the flue
stack valve".
X
Check the heater's wiring.
X
Description
Period
Every
12
hours
Weekly Monthl
y
Annu-
ally
Hot
Do not touch the flue stack or
combustion chamber!
Do not perform maintenance until the
flue and combustion chamber have
cooled down.
Warning
Switch off the power supply before
carrying out any repairs!
Warning
Do not operate the heater in hot
weather to burn oil.
