12
Form No. KCMGM-1219
English
MAINTENANCE
Converting Between Fuels
Conversion of a unit between natural gas and propane requires
replacement of the orifice, adjustment to the air ring position,
and adjustment to the low setting (setting “1”) of the Temperature
Control. This procedure must be performed by an authorized
and certified gas equipment installer.
WARNING
Turn temperature control to off (“0”) position, close
individual gas shutoff valve, and allow unit to cool before
performing any cleaning, adjustments, or maintenance.
FIRE OR EXPLOSION HAZARD: This unit must be serviced
by qualified personnel only. Service by unqualified
personnel may lead to explosion or burn.
1. If the unit already has been installed, turn the Temperature
Control fully clockwise to setting “0”, and close the gas
shut-off valve.
WARNING! Always close gas shut-off
valve when unit is not in use.
2. If the unit already has been installed, remove the restraining
device and disconnect unit from the gas supply line.
3. Turn over unit and set it on a piece of cardboard or
something similar to prevent damage to the griddle surface.
4. Remove the base of the unit.
• For round frame units:
a. Unscrew and remove the three feet along with the
restraining ring.
b. Remove the screw on the gas line clamp.
c. While holding the gas line, carefully slide the base out
from underneath the gas line and off the unit.
• For rectangular frame units:
a. Remove the screws the secure the base plate to the
frame.
b. Remove the screw on the gas line clamp.
c. Carefully pass the gas line through the rectangular
cutout while sliding the base off of the unit.
Restraining
Ring
Clamp Screw
Foot
Washer
Gas
Line
Gas Line
Clamp
Base
Removing the Base (KCMG-1RND shown)
5. Loosen the ring nut, and slide the air ring back toward the
center of the unit to open the air intake as wide as possible.
6. Using a 10 mm wrench, remove the installed orifice and its
washer.
• The propane orifice size is
160 μm.
• The natural gas orifice size is
250 μm.
Air Ring
Orifice
Orifice Washer
Ring Nut
Replacing the Orifice (KCMG-1RND shown)
7. Install the new orifice and its washer that were included in
the conversion pack.
• Place the removed orifice and washer into the conversion
pack for potential future use.
8. Position the air ring so that it creates an air gap of 1/2″
(12 mm), measured from the front edge of the ring to the
base of the orifice. Then, tighten the ring nut to secure it in
position.
Air Ring
Ring Nut
1/2″ (12 mm
)
Air Gap
Setting the Air Gap (KCMG-1RND shown)
9. Reinstall the base of the unit.
• For round frame units:
a. While holding the gas line, carefully slide the base
underneath the gas line and onto the unit.
b. Reinstall the screw through the gas line clamp.
c. Reinstall the restraining ring and three feet.
• For rectangular frame units:
a. Carefully pass the gas line through the rectangular
cutout while sliding the base onto the unit.
b. Position the base on the frame and reinstall the
screws.
c. Reinstall the screw through the gas line clamp.
10. Turn the unit over to its upright position, and connect the
unit to the gas supply line. Refer to the INSTALLATION
section for information.
11. Perform the “Adjusting the Low Setting” procedure in this
section.
