ACV E-tech P 115, Установка, эксплуатация и обслуживание

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18
BOILER MAINTENANCE
Set-up conditions
•
Boiler shut down using the ON/OFF switch
•
External power supply isolated (through the exter-
nal electrical box)
•
Boiler cooled down (if it was in operation)
Procedure
1. Remove access panels. Refer to
"Removal and In-
stallation of the Access Panels" on page 10
.
2. Perform a visual inspection of the boiler looking
out for signs of water leakage from joints, expan-
sion vessel, and the area around the elements
on top of the boiler.
3. Perform a visual inspection of all wiring and ca-
bles in the boiler casing, checking for signs of
overheating or burning.
4. Check all push-on electrical connectors for tight-
ness and good connection to the relative com-
ponents.
5. Using an appropriate screwdriver, check all
electrical terminals on DIN rails and on all com-
ponents for tightness.
6. Check all individual circuit breakers are in the
normal position. If some fuses have tripped,
check the wiring and the resistance before re-
activating them.
7. Check the condition of the heating elements.
Follow-on task(s)
1. Replace the heating elements if necessary. See
"Replacing the Heating Elements" on page 19
2. Restart the boiler, refer to
"Starting the boiler" on
page 16
.
CHECKING THE SAFETY DEVICES
1. Check the correct operation of the thermostats
and safety devices.
2. Check the heating circuit safety valves, and
those in the DHW circuit, as required.
3. Check the correct operation of the automatic air
vent.
RESETTING THE HIGH LIMIT SAFETY
THERMOSTAT
Set-up conditions
•
Boiler shut down through the ON/OFF switch
•
External power supply isolated (through the ex-
ternal electrical box)
•
Boiler cooled down (if it was in operation) to <60°C
Procedure
1. Unscrew and remove the cover from the safety
thermostat.
2. Press the safety thermostat to reset it.
3. Reinstall the cover on the safety thermostat.
Follow-on task(s)
1. Activate electrical power through the external
electrical box
2. Turn the boiler on using the ON/OFF switch.
3. Check that the overheating indicator is turned
off.
Before carrying out any work on the system ensure that the boiler is cool and all electrical
supplies are isolated.
EN
Maintenance