Middleby-marshall Oven Manuel d'utilisateur télécharger pdf (Page 28)

2-28

SECTION 2

INSTALLATION

IX. CHANGING ORIFICES

TO CHANGE MAIN ORIFICE (Refer to Figure 2-36)

1. Turn off main gas supply valve.

2. Open 3/4" union in gas supply line.

3. Remove 1/2" nuts securing gas train to the burner housing.

4. Using a 11/16" wrench remove orifice from the mounting

flange.

5. Install new orifice in reverse order.

WARNING

Before operating oven check for gas leaks!

TO CHANGE BYPASS (LOW FLAME) ORIFICE (Refer to

Figure 2-36)

1. Turn off main gas supply valve.

2. Open 3/4" union in gas supply line.

3. With 1/2" wrench loosen compression nuts securing bypass

tube to solenoid valve.

4. Remove orifice from bypass tube.

5. Install new orifice in reverse order.

X. VOLUMETRIC METHOD

WARNING

Before operating oven check for gas leaks!

IMPORTANT

During these measurements, no other gas appliance should be

in operation being supplied from the same gas meter.

To determine gas flow setting value E:

E = Liters/min.

NB = Rated input in kW

HuB = Heat (Calorific) value of gas in kW/m

E = NB

HuB

To determine the time of 0.1m

(100 liters) gas usage:

Time in minutes =100

The time of the gas flow through the meter should be taken

with a stopwatch.

1. Remove cover screw from the gas valve pressure (governor)

adjustment valve.

2. Open main gas supply valve and start oven according to

supplied instructions with the temperature control at

maximum setting.

3. Once oven is in operation, adjust pressure valve (governor)

to the calculated volume using the time for 100 liters of flow

through. Turning the adjustment screw clockwise will

increase the flow and counter-clockwise will reduce it.

1 2 ... 23 24 25 26 27 28 29 30

Commentaires sur ces manuels

Pas de commentaire

Middleby-marshall Oven Manuel d'utilisateur Page 28

Commentaires sur ces manuels

Produits connexes et manuels pour Four Middleby-marshall Oven