21
MAINTENANCE
Semi-Annual Checks and Service
Check Burner Manifold Pressure
WARNING
This task should be performed by qualified service personnel only.
1. Ensure that the gas valve knob is in the OFF position.
2. Remove the pressure tap plug from burner manifold.
(see photo).
3. Insert the fitting for a gas-pressure measuring device
into the pressure tap hole.
WARNING
The frypot must be filled with shortening or
water during this procedure.
4. Place the gas valve in the PILOT position and light.
When the burner lights and continues to burn, note gas
pressure reading and compare to the accompanying
tables.
5. To adjust burner gas pressure, remove the cap from
the gas valve regulator adjustment screw.
6. Increase the setting on the thermostat until the
burner comes on.
7. Monitor the gas pressure reading on the man-ometer or pressure gauge.
8. Adjust the gas valve regulator adjustment screw to obtain the prescribed pressure. See the
Rating Plate. Turning the screw clockwise increases pressure, counterclockwise decreases
pressure.
A manometer or water column pressure gauge
meter is connected to the manifold here.
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Summary of Contents for Legend RD18
Page 42: ...40 SERVICE...
