Robur Next-R, Инструкция по установке, использованию и техническому обслуживанию

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Maintenance
Installation, use and maintenance manual – Next-R
43
7
7 MAINTENANCE
7.1
WARNINGS
Correct maintenance prevents problems, assures e ffi -
ciency and keeps running costs low.
Maintenance operations described herein may exclu-
sively be performed by the TAC or skilled maintenance
technician.
Any operation on internal components may exclusively
be performed by the TAC.
Before performing any operation, switch o ff the appli-
ance 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 ffi ciency checks and every other "check and main-
tenance operation" (see Table 7.1 p. 43) must be per-
formed with a frequency according to current regula-
tions or, if more restrictive, according to the provisions
set forth by the manufacturer, installer or TAC.
Responsibility for e ffi 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. 43 on an
annual basis.
Table 7.1
Scheduled routine maintenance
R G K M
Ordinary scheduled maintenance
Check of the
unit
clean the burner √ √ √ √
clean the ignition and fl 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 ap-
pliance 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. 43). Set
back in place the protective cap after resetting the thermostat.
Resetting of the temperature limit thermostat should
be carried out by quali fi ed service personnel, after re-
moving the cause of overheating.
The intervention of the temperature limit thermostat AL-
WAYS 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
7.4 TROUBLESHOOTING
If the gas unit heater does not start in heating mode nor in ven-
tilation, follow the steps below to identify the most likely cause
of the fault:
1.
Disconnect electrical power supply to the gas unit heater.
2. Check the fuse on the electrical terminal block. If it is bro-
ken, replace it with a suitable one (see electrical data in Table
1.2 p. 18).
3.
Restore the electrical power supply.
4.
Check that the power supply is correct (230 V 1-N 50 Hz).
5. Check static gas supply pressure with respect to values in
Table 3.1 p. 23.
6. Set the summer/winter selector switch to winter position, or
close contact 1-3 on the terminal block.
7.
Switch on Z9 contact using the provided control device
(thermostat, chronothermostat or voltage-free contact) or
by closing Z9 contact on the terminal block.
8. Check that the limit thermostat has not been triggered. If
this is the case, check the overheating cause, remove it, and
reset the limit thermostat (procedure Paragraph 7.3 p. 43).
9. Check that the blower starts. If the blower does not start:
„
Check the presence of voltage at the blower. If the volt-
age is present but the blower does not start, disconnect
blower control cable. If the blower starts, proceed to the
next step, otherwise replace the blower.
„
Check the correct operation of the pressure switch and
of its connection pipe (except for R15 and R20 models).