Blodgett MT1828 Serie Manual Del Operario página 8

GAS CONNECTIONS (if applicable)
Connect the oven to the gas line with the proper
type of gas according to Local and National Instal-
lation Standards.
Setting Equipment for Other Types of Gas
1. Remove the control box door and belt guard.
2. Remove the entire gas piping and burner as-
sembly from the oven.
3. Remove the four screws holding the blower
and belt guard to the burner mounting flange.
Remove the blower and belt guard from the
burner.
4. Unscrew the gas piping at the inlet of the gas
valve.
5. France and Belgium Only --- The nipple at the
inlet of the gas valve must be changed. On
natural gas ovens this nipple will have a
3.2mm restrictor inside.
To convert from natural gas to propane/bu-
tane the nipple with the restrictor must be re-
moved and replaced with a nipple without a
restrictor.
To convert from propane/butane to natural
gas the nipple without a restrictor must be re-
moved and replaced with a nipple with a re-
strictor. Orient the nipple so the restrictor is
close to the valve and the open end is close to
the piping elbow.
6. Unscrew the gas valve and remaining piping
up to and including the coupling where it en-
ters the burner tube.
7. Remove the grommet that hold the spark and
flame sense wires.
8. Grasp the front of the oriface assembly while
pushing down on the fitting at the top of the
Installation
burner tube. Pull the oriface assembly out of
the front of the burner tube.
NOTE: Be careful not to lose the spacer ring
that goes around the nipple at the inlet
of the orifice assembly, it will be re-
used.
9. Remove the spark and flame sense electrodes
from the oriface assembly. Reinstall in the same
position on the new oriface assembly.
10. Reverse the procedure to reassemble the
burner.
NOTE: Be sure to reinstall the spacer ring and
use thread sealant when reconnecting
the piping fittings.
11. Reinstall the gas valve and burner assembly
into the oven.
Disconnect gas
piping here
Pressure Tap
Blower
mounting screws
7
Utility Connections
Gas pressure
adjustment
Disconnect
gas piping
here
Grommet for
spark & flame
sense wires
Belt guard
mounting bracket
Figure 9