Rotex GW User Manual

41
FA ROTEX GW - 09/2012
9 x Inspection and maintenance
9.2.3 Checking and cleaning the burner
As a rule, the burner does not wear. If impurities or unsatisfactory
combustion values are ascertained, the burner must be
dismantled (see chapter 7.4), cleaned and if needed, reset (see
chapter 7.3).
Cleaning the combustion chamber
Ɣ Dismantle burner (see chapter 7.4)
Ɣ Clean the flue gas routing (brushing out and vacuuming out
the open burner chamber).
Checking the burner
Checking the burner includes visually inspecting the burner's
condition as well as making flue gas measurements.
The scope of inspection includes:
Ɣ Clean the burner surface (cloth, plastic brush).
Ɣ Conduct a visual inspection of the ignition and ionisation
electrodes for damages and correct electrode gap (see
chapter 7.3.7).
Ɣ If necessary, replace faulty parts.
Ɣ Mount burner in combustion chamber.
Ɣ Check the gas line for leakage.
Ɣ Put the burner into operation and let it run for about 5 minutes
in the chimney sweep position.
Ɣ Check combustion values:
– Flue gas temperature at measuring sockets of the flue gas
pipe. (Target value < 75 °C),
–O
2
- or CO
2
-content (see chapter 7.3.1),
– CO content (target value < 50 ppm).
Î If the combustion values lie not within the target range, the
burner must be adjusted according to chapter 7.3.
DANGER OF EXPLOSION!
Escaping gas is a direct threat to human health and
safety. Even a few sparks can cause major explo-
sions.
Ɣ Only heating specialists authorised and trained by
the gas or power supply company should be
allowed to work on gas-conducting parts.
For exact information regarding the checking and set-
ting of the burner, see chapter 7.3.
For exact information regarding the assembly and dis-
assembly of the burner, see chapter 7.4.
Ɣ The sight glass (item 3)
over the ignition
electrodes must be clean
and be in perfect
condition.
Fig. 9-2 Checking the sight glass
In the course of maintenance work, the safety relevant
components must be additionally inspected for the
expiration of their nominal service life:
– Ignition transformer: 10 years or 250,000 burner
starts,
– Gas valve: 10 years or 250,000 burner starts,
– Overpressure safety valve: 10 years.
1
1 3
2
We recommend, to enter all measured values and the
conducted work with the date and signature into the
enclosed operating handbook.

Rotex GW Specifications

General

Brand	Rotex
Model	GW
Category	Boiler
Language	English