25
A1007841-664Y7800 • A
BOILER MAINTENANCE
Set-up conditions
•
Boiler shut down through the ON/OFF switch
•
External power supply isolated (through the external elec-
trical box)
•
Boiler cooled down (if it was in operation)
Procedure
1. Remove the top panel and front face of the boiler. Refer to
"Removal and Installation of the Access Panels" on
page 14
.
2. Perform a visual inspection of the boiler looking out for
signs of water leakage from joints, expansion vessel, and
the area around the elements on top of the boiler.
3. Perform a visual inspection of all wiring and cables in the
boiler casing, checking for signs of overheating or burning.
4. Check all push-on electrical connectors for tightness and
good connection to the relative components.
5. Using an appropriate screwdriver, check all electrical termi-
nals on DIN rails and on all components for tightness.
6. Check the settings on the internal timers in accordance with
"Checks and setup before start up" on page 22
.
Follow-on task(s)
7. Replace the heating elements if necessary. See
"Replac-
ing the Heating Elements" on page 26.
8. Restart the boiler, refer to
"Starting the boiler" on page
23
.
CHECKING THE SAFETY DEVICES
9. Check the correct operation of:
•
the thermostats.
•
the safety valve(s).
•
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 external electri-
cal box)
•
Boiler cooled down (if it was in operation)
Procedure
1. Unscrew and remove the safety thermostat (1) cover, at the
bottom of the boiler.
2. Push on the safety thermostat (1) to reset it. A “click” sound
should be heard.
In case no “click” sound is heard, the safety
device is not the cause of the shut-off.
Troubleshooting should be performed by a
qualified service engineer.
3. Reinstall the safety thermostat cover.
Follow-on task(s)
1. Activate electrical power through the external electrical box
2. Turn the boiler on using the ON/OFF switch.
3. Make sure that the indicator light (2) is off.
Before carrying out any work on the system ensure that the boiler is cool and all electrical supplies
are isolated.
2
1
EN
Maintenance
Summary of Contents for E-Tech W 09 Mono
Page 28: ...ACV International Oude Vijverweg 6 B 1653 Dworp Belgium belgium service acv com www acv com...
Page 29: ...E Tech W 09 15 Mono 09 15 22 28 36 Tri A1007841_664Y7800 A ML...
Page 31: ...3 763 mm 442 mm 332 mm 185 mm 370 mm 105 mm Min 25 mm Min 400 mm Min 200 mm ML...
Page 56: ...28 2 3 4 5 1 6 7 8 9 10 12 13 11 14 16 17 18 15 12 ML...
Page 60: ...32 ML...
Page 61: ...33 ML...
Page 63: ...35 ML...
Page 64: ...ACV International Oude Vijverweg 6 B 1653 Dworp Belgium belgium service acv com www acv com...
