Robur Next-R - 7 Maintenance; Warnings; Scheduled Routine Maintenance; Resetting the Temperature Limit Thermostat

Maintenance
Installation, use and maintenance manual – Next-R
49
7
Other errors that allow resetting can be reset by power cycling the unit.
7 MAINTENANCE
7.1 WARNINGS
Correct maintenance prevents problems, assures
eciency and keeps running costs low.
Maintenance operations described herein may ex-
clusively be performed by the TAC or skilled main-
tenance technician.
Any operation on internal components may exclu-
sively be performed by the TAC.
Before performing any operation, switch o 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 eciency checks and every other "check and
maintenance operation" (see Table 7.1 p. 49 )
must be performed with a frequency according to
current regulations or, if more restrictive, according
to the provisions set forth by the manufacturer, in-
staller or TAC.
Responsibility for eciency checks, to be carried
out for the aims of restricting energy consumption,
lies with the system manager.
7.2 SCHEDULED ROUTINE
MAINTENANCE
Perform the operations in the following Table 7.1 p.49
on an annual basis.
Table7.1 Scheduled routine maintenance
Next-R G K M
Ordinary scheduled maintenance
Check of the unit
clean the burner √ √ √ √
clean the ignition and ame sensor electrodes √ √ √ √
clean the fan √ √ √ √
clean the blower/exhaust fan √ √ √ √
check the % value of CO
2
√ √ √ √
check the unit safety devices √ √ √ √
check that the condensate discharge is clean - √ - -
7.3 RESETTING THE TEMPERATURE LIMIT
THERMOSTAT
The temperature limit thermostat stops the burner in case
of appliance overheating.
Resetting is carried out by pressing the button on the back
of the unit (detail 6 on dimensional diagrams, Paragraph
1.2 p. 8 ), after unscrewing the protective cap (see
Figure 7.1 p. 49 ). Set back in place the protective cap
after resetting the thermostat.
Resetting of the temperature limit thermostat
should be carried out by qualied service per-
sonnel, after removing the cause of overheating.
The intervention of the temperature limit ther-
mostat ALWAYS indicates an abnormal condition.
Before resetting, it is therefore advisable to search
for the reasons that led to the unit overheating. If
frequent stops occur, contact Robur TAC.
Figure7.1 Position of the limit thermostat reset
A Protective cap of the limit thermostat reset button
A