A.O. Smith SGS - 100, Installation & Service Manual

Page: 93 / 110

Instruction manual SGS 93
s
15 Performing
maintenance
15.1 Introduction Caution
Maintenance may only by carried out by an approved service and
maintenance engineer.
At each service, the appliance undergoes maintenance on both the water side
and the gas side. The maintenance must be carried out in the following order.
1.
Preparation for maintenance
2. Water-side maintenance
3. Gas-side maintenance
4. Solar collector maintenance
5. Finalizing maintenance
Note
Before ordering spare parts, it is important to write down the appliance type
and model, and the full serial number of the appliance. These details can be
found on the rating plate. Only by ordering with this information can you be sure
to receive the correct spare parts.
15.2 Preparation for
maintenance
To test whether all components are still working properly, complete the following
steps:
1. Activate the
MENU
with .
2. Use: and to place the cursor beside
OFF
.
3. Confirm
OFF
with .
4. Wait until the fan has stopped. The icon is then dimmed.
Caution
Failure to wait until the fan stops purging can cause damage to the
appliance.
5. Switch the appliance OFF (position 0) using the ON/OFF switch on the
control panel.
MENU
»OFF
^ ON
È WEEK PROGRAM