Inspections And Maintenance; Instructions For Inspection And Maintenance - Alpha ARES 440 Tec Installation And Servicing Instructions

Inspections and maintenance

4
INSPECTIONS AND
MAINTENANCE
Inspections and maintenance carried out to state of
the art and 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 Inspections and Maintenance can
cause material and personal damage.
4.1 INSTRUCTIONS FOR INSPECTION
AND MAINTENANCE
Only original Alpha Innovation 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. When a
part needs to be replaced:
• Disconnect the appliance from the mains power supply and make
sure it cannot be reconnected accidentally.
• Shut the gas cut-off valve upstream of the boiler.
• If necessary, and based on the work that needs to be carried out, close
any cut-off valves on the heating flow and return, as well as the cold
water inlet valve.
After completing all maintenance operations, restore the boiler's
operation.
• Open the heating flow and return, as well as the cold water inlet valve
(if it was previously closed).
• Relieve and, if necessary, restore the pressure in the heating system,
until reaching pressure of 0.8/1.0 bar.
• Open the gas cut-off valve.
• Apply voltage to the boiler.
• Make sure the appliance is water-tight, on the gas side and the water side.
Table of resistance values based on the heating probe (SR) and the heating return probe (SRR) temperature
T°C 0
0 32755
10 20003
20
12571
30
8112
40
5363
50 3627
60 2504
70
1762
80
1263
90
920
Relation between the temperature (°C) and nom. resistance (Ohm) of the heating probe SR and the heating return probe SRR.
Example: At 25°C, the nominal resistance is 10067 Ohm
1 2
31137 29607 28161
19072 18189 17351
12019 11493 10994
7775 7454 7147
5152 4951 4758
3491 3362 3238
2415 2330 2249
1703 1646 1592
1222 1183 1146
892 865 839
3 4 5
26795 25502
16557 15803
10519 10067
6855 6577
4574 4398
3119 3006
2171 2096
1539 1488
1110 1075
814 790
44
OBLIGATION!
Wear protective gloves.
Scalding hazard!
Be careful during the maintenance operations.
6 7
24278 23121
15088 14410
9636 9227
6311 6057
4230 4069
2897 2792
2023 1954
1440 1393
1042 1010
766 744
8 9
22025 20987
13765 13153
8837 8466
5815 5584
3915 3768
2692 2596
1888 1824
1348 1304
979 949
722 701