Inspections And Maintenance - Alpha ARES 440 Tec Installation And Servicing Instructions

4
INSpECTIoNS AND
MAINTENANCE
Inspection and maintenance carried out at regular
intervals, as well as the exclusive use of original
spare parts, are of primary importance for smooth
operation and to guarantee long boiler life.
Annual maintenance of the appliance is compulsory,
in accordance with Legislation in force.
failure to carry out Inspection and Maintenance can
cause material and personal damage.
For this reason we recommend a maintenance contract.
Inspection is required to determine the actual state of an appliance and
compare it with the optimal state. This is carried out through measuring,
checking, observing.
Maintenance is required to eliminate any deviation of the effective state
from the optimal state. This is usually carried out through cleaning,
setting and possibly replacing single parts that are subject to wear.
These maintenance intervals are set forth by a specialist based on the
certified state of the appliance at the time of inspection.
Table of resistance values based on the heating sensor (SR)
and the heating return probe (SRR) temperature.
T°C 0
0 32755 31137
10
20003 19072
20
12571 12019
30 8112 7775
40
5363 5152
50
3627 3491
60 2504 2415
70
1762 1703
80
1263 1222
90 920
Relation between the temperature (°C) and nominal resistance (Ohm)
of the heating sensor SR and the heating return sensor SRR.
Example: At 25°C, the nominal resistance is 10067 Ohm
At 90°C, the nominal resistance is 920 Ohm
1 2 3
29607 28161
18189 17351
11493 10994
7454 7147
4951 4758
3362 3238
2330 2249
1646 1592
1183 1146
892 865 839

Inspections and maintenance

Instructions for inspection and maintenance.
only original Alpha spare parts must be used to
ensure a long life for all of the functions of your
appliance, and to avoid changing the conditions of
the approved standard product.
Before proceeding with maintenance operations, always carry out the
procedures described below:
• Turn off the mains switch.
• Disconnect the appliance from the electrical supply using a
separation device, with a contact opening of at least 3 mm (e.g. safety
devices or power switches), and make sure it cannot be accidentally
re-connected.
• Close the gas service valve upstream of the boiler.
• If necessary, and based on the work that needs to be carried out,
close any valves on the heating flow and return.
Once the maintenance work has been finished, always carry out the
operations listed below:
• If necessary, open the heating flow and return valves
• Relieve and, if necessary, restore the pressure in the heating system.
• Open the gas service valve.
• Re-connect the appliance to the electrical supply and turn on the
mains supply.
• Check the appliance for gas tightness and that there are no water
leaks.
4 5 6
26795 25502 24278
16557 15803 15088
10519 10067 9636
6855 6577 6311
4574 4398 4230
3119 3006 2897
2171 2096 2023
1539 1488 1440
1110 1075 1042
814 790 766
47
7 8 9
23121 22025 20987
14410 13765 13153
9227 8837 8466
6057 5815 5584
4069 3915 3768
2792 2692 2596
1954 1888 1824
1393 1348 1304
1010 979 949
744 722 701
Alpha ARES Tec 440 - 900