A.O. Smith GWV - 120 User Manual

Page of 102
Instruction manual GWV
89
s
15
Performing 
maintenance
15.1 Introduction
Caution
Maintenance may only be performed by a qualified 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.
2.
3.
4.
Note
To order 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 position the cursor in front of OFF.
3. Confirm OFF with 
.
4. Wait until the fan has stopped. The   icon then goes out.
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
GENESIS
IMD-0511 R1