Maintenance
Installation, use and maintenance manual – Supercromo
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7
Case 2: the status of the programmer clock output is
"OFF" (red LED off)
1. Press the MANUAL button to move the indicator from
"AUTO" to "ON", the programmable timer output will
change to the state "ON" and the red LED will light up;
this way, the set programs will be skipped.
2. To reactivate the running of the set programs, press the
MANUAL button again, the indicator will move from
"ON" to "AUTO" but the output of the programmable
timer will continue to stay "ON" (red LED on). The pro-
grammable timer will resume its automatic operation
when the next program will switch to the status "OFF"
(i.e. until the status of the request is changed).
7
MAINTENANCE
7.1
WARNINGS
Correct maintenance prevents problems, assures
efficiency and keeps running costs low.
Any operation on internal components may exclu-
sively be performed by the TAC.
Before performing any operation, switch off the
appliance by means of the control device and wait
for the end of the shutdown cycle, then disconnect
power and gas supply, by acting on the electrical
disconnector and gas valve.
The efficiency checks and every other "check and
maintenance operation" must be performed with
a frequency according to current regulations or,
if more restrictive, according to the provisions set
forth by the manufacturer, installer or TAC.
Responsibility for efficiency checks, to be carried
out for the aims of restricting energy consumption,
lies with the system manager.
7.2
CLEANING AND MAINTENANCE
The only operation required by this kind of gas-fired con-
vector is the cleaning of the outer casing (which must al-
ways be carried out with the appliance cold and without
the use of solvents) and the periodic removal of any dust
that may accumulate on the heat exchanger and the fan.
It is recommended to have a periodic (annual) check and
cleaning of the gas-fired convector by contacting a TAC.
With regard to periodic maintenance of the gas-fired con-
vector, follow the regulations in force.
7.3
SAFETY DEVICES
Electricity outage
The gas-fired convector is switched off by closing
the gas valve. When the power supply is restored,
the gas-fired convector will automatically restart.
Gas failure or other faults that causes the flame
to extinguish
The gas-fired convector will automatically attempt
to restart for a period of 10 seconds, after which, if
the attempt fails, the control unit will lock out the
gas-fired convector and stop the blower (red signal
light lit on the control panel).
Overheating
If during operation the upper or lower grille is
partially obstructed or the fan stops, causing the
gas-fired convector to overheat, the limit thermo-
stat trips, cutting off the power supply to the gas
valve, interrupting the flow of gas to the burner. To
restore operation, wait about ten minutes for the
temperature to drop, disconnect the gas-fired con-
vector from the power supply, remove the casing
and reset the limit thermostat by pressing the reset
button located on the limit thermostat itself (detail
A in Figure 7.1
p. 23). If the problem is repeated
within a short period of time, TAC must be called in
to check the causes of overheating.
Figure 7.1
Limit thermostat
A Limit thermostat
A
7.4
ANY MALFUNCTIONS OF OPERATION
Before taking any particular measures, always check that:
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