AT 300 series
40.020.933 - rev. 04 - 2011
23
English
/i
5.2
General
When the heater is stored long-term:
1. Switch off the heater.
2. Disconnect the power plug.
Description
Period
Every
12
hours
Weekly Monthl
y
Annu-
ally
Clean the combustion chamber.
X
Drain (water of) condensation from the fuel tank, when
the waste oil contains water.
X
Only for the AT 307: Clean the combustion chamber
and the vaporiser with a steel brush.
X
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
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 power during maintenance.
