Adjusting The Position Of The Venturi; Machines With Steam Heating; Machines With Electric Heating - GIRBAU PB32 Series Installation, Operation And Maintenance Instructions Manual

6.3.2. Adjusting the position of the Venturi

(Intervention only to be performed on machines with an atmospheric burner)
 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 necessary covers:
- Models PB32 and X13: right-hand base-frame.
- Models PB/PBP51 and X20: left-hand base-frame.
 Remove the protective filter.
 Loosen the Allen screw (A, Fig. 6.7) and adjust the position of the Venturi body (B).
- Moving the Venturi upwards: increases the combustion air flow.
- Moving the Venturi downwards: reduces the combustion air flow.
- In PB/PBP51 models from serial number 2191065; in PB32 models from serial number 2176098; and in
PB32/X13 USA models from serial number 2205136, to modify the position of the Venturi, turn the
Venturi clockwise or anticlockwise depending on the adjustment required.
 As a guide:
- The lack of combustion air produces an orange flame
and the combustion is smoky.
- An increase in combustion air produces a blue flame. If
air flow is excessive, it tends to separate the flame from
the burner.
 Set the position of the Venturi.
 Fit the protective filter and the side of the base-frame
housing the Venturi.
 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.
It is advisable to keep a log of the gas analyser readings along
with the machine's technical documentation.

6.4. Machines with steam heating

After connecting the heating circuit, check:
 Check that the pressure valve pressure corresponds to the value indicated in the table in Section 4.5.
 That there are no leakages of steam in the supply circuit and the return circuit.
 That there is no leakage through the safety valve.

6.5. Machines with electric heating

Check that the machine's power consumption is correct and consistent with the values set out in the table in
Section 4.6.
Initial start-up
to achieve combustion values
78
Fig. 6.7
Code no. 550038
Rev. no. 16/1018