Machines With Gas Heating. Analysis Of The Combustion Gases; Changing The Position Of The Air Extraction Adjustment Clapper Valve - GIRBAU PB32 Series Installation, Operation And Maintenance Instructions Manual

6.3. Machines with gas heating. Analysis of the
combustion gases
Once the ironing program has begun:
 Wait a few minutes until the fume exit temperature exceeds
120 ºC (248 ºF).
 Analyse the combustion products (Fig. 6.5). THE RESULT
MUST COMPLY WITH THE REQUIREMENTS IN FORCE
IN THE COUNTRY WHERE THE IRONER IS INSTALLED.
Measuring point: indicated as A in the figure 5.16.
 Some operating conditions may call for slight modification
of the combustion control devices.
See:
- Changing the position of the air extraction adjustment
clapper valve (Section 6.3.1).
- Adjusting the position of the Venturi. (Only machines
with atmospheric burner) (Section 6.3.2).

6.3.1. Changing the position of the air extraction adjustment clapper valve

 Stop the machine.
 Switch off or close and mechanically lock the power supply and the manual gas inlet valve.
 Wait a reasonable time to ensure that there are no high
temperature surfaces inside the base-frame.
 Remove the right-hand side cover from the base-frame and
check that the surface temperature of the air output is not
at a dangerous level. Loosen the locknut and adjust the
position of the air flow clapper valve (Fig. 6.5).
- Turn the stem of the clapper valve in the
open up the flow of fumes.
- Turn the stem of the clapper valve in the
close the flow of fumes.
 Tighten the locknut to lock the position of the clapper valve.
 Replace the cover of the base-frame and connect the
electricity and gas supply.
 Repeat the initial test and analyse the combustion products
(Section 6.3).
 Repeat the operations described as many times as
necessary in order
consistent with the current requirements in the country
where the ironer is installed.
Initial start-up
+
direction to
–
direction to
to achieve combustion values
77
Fig. 6.5
Fig. 6.6
Code no. 550038
Rev. no. 16/1018