is

14Maintenance frequency

14.1 Introduction

A service should be carried out at least once a year, both on the water side and

 

on the gas side. Maintenance frequency depends, among other things, on the

 

water quality, the average burning time per day and the set water temperature.

 

 

 

Note

 

Regular maintenance extends the service life of the appliance.

 

To determine the correct maintenance frequency, it is recommended to arrange

 

for the service and maintenance engineer to check the appliance on both the

 

water and gas side, three months after installation. Based on this check, the

 

best maintenance frequency can be determined.

 

 

14.2Determining service To aid servicing, the electronic controller has a service interval with which the

interval

service and maintenance engineer can determine the frequency of

 

maintenance, based on the number of burning hours.

 

The service interval can be set to: 500, 1000 or 1500 burning hours. The

 

standard setting is 500 burning hours.

 

 

 

Example

 

In the first three months, the appliance has burnt 300 hours. During

 

maintenance, it is evident that one service per year will be sufficient. Therefore,

 

after one year, some 1200 burning hours will have elapsed. The first value below

 

1200 hours that can be selected is 1000 burning hours.

 

In this case, the service and maintenance engineer sets the interval to 1000.

 

In the first three months, the appliance has burned for 300 hours. During

 

maintenance, it is evident (perhaps due to the water quality) that service will be

 

required at least once every 6 months.

 

Therefore, after six months, some 600 burning hours will have elapsed. The first

 

value below 600 hours that can be selected is 500 burning hours.

 

In this case, the service and maintenance engineer sets the interval to 500.

 

 

!!! WARNING !!!

MAX. BURNINGHOURS:

SERVICE REQUIRED

Once the set number of burning hours has elapsed, the message SERVICE REQUIRED will appear on the display. When this message appears, the service and maintenance engineer must be contacted.

Instruction manual SGE

91

Page 91
Image 91
A.O. Smith SGE service manual Maintenance frequency, Interval, Best maintenance frequency can be determined