Check fan bearing for grease nipples,
only the smaller range of heaters are
fitted with “sealed for life” bearing, if
fitted with nipples regrease using Shell
Alvania R3.
Check control settings
Outer casing and blades to be wiped
with a damp soapy cloth, then dried.
Fault finding
General
Should either the burner fail in
operating or its light up sequence fail,
the following procedures should be
carried out.
Check that the connectors to the spark
electrode and flame detector are
securely fixed and that there has been
no interruption to the gas, air or electric
supplies.
Flame failure lockout is indicated on
the heater via a red indication lamp.
Rest can be achieved by depressing
the Satronic flame programmer RESET
button protruding from the front of the
electrical control panel.
If the burner still fails to ignite, proceed
to carry out systematic checks in
accordance with the fault finding guide.
Control system fault finding
The Satronic burner controller has a
coloured timing wheel and pointer
visible through the controller itself, this
may be used to establish the cause of
a fault. When failure occurs the
controller stops and remains in this
condition until reset. After the controller
has been successfully reset, the
controller cycles to the beginning of its
cycle (start of the blue section) and
recommence the purge sequence. The
complete cycle i.e from the start of the
blue section to the start of the black
section normally takes 1 min 28
seconds for the MMI 810-1.
Note References to terminal numbers
in this section relate to those in the
Satronic burner controller sub-base
and do not correspond to the numbers
on the terminal strip in the control
panel.
The servicing of the DF heaters must
only be carried out by a competent
person
Externally positioned heaters should
not be commissioned during adverse
weather conditions i.e. during rain and
high winds etc...
It is recommended that the heater is
serviced twice a year, a major service
should be carried out prior to heating
season, and a minor service after 2000
running hours.
After servicing the heater should be
re-commissioned.
Routine servicing
Note Isolate electricity supply and gas
supply before servicing.
Access to the fan, motor, drive belts
and burner are through the twin access
doors on the side of the heater.
Remove and clean spark igniter with a
wire brush. Replace it every two
years.
Inspect and clean the flame rod with a
dry clean cloth to ensure freedom from
dirt and moisture. Replace the flame
rod when showing signs of excessive
wear.
Remove protection boot from the spark
electrode cap, with a clean cloth wipe
clean both the HT and flame probe
leads, replace protection boot.
Check fan belts for wear and tension
after 2000 hours of operation.
The tension of each belt should be
determined using a belt tensioned.
Check condition of burner ports, if
necessary, clear the ports using a
1.8mm drill.
Note Check stainless steel mixing
plates for cracking.
Inspect the entire external system for
signs of leakage, wear or general
damage.
Servicing