Crown GLT-20, Руководство по установке и эксплуатации

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INSTALLATION & OPERATION MANUAL 10070 REV 0 (04/21) PAGE 15 OF32
G as F ired S team T ilting K ettles S ervice
WARNING
Adjustments and service work may be performed only by a qualified technician who is experienced in,
and knowledgeable with, the operation of commercial gas cooking equipment. To assure your confidence,
contact your authorized service agency for reliable service, dependable advice or other assistance, and
for genuine factory parts.
S ervice
G eneral
When any difficulty arises always check that the unit has been connected to the gas supply type and voltage for which it
was supplied. This can be done by examining the serial plate on the lower right side of the unit. It will list the gas type and
voltage for which the unit was manufactured.
Wiring diagrams for the unit are located in a small envelope affixed to the side panel of left hand console.
UNIT TOTAL INPUT
ORIFICE SIZE
NATURAL PROPANE
GLT-20 80,000 BTU/Hour DMS # 19 (0.166") DMS # 30 (0.125")
GLT-30 100,000 BTU/Hour DMS # 13 (0.185") DMS # 27 (0.144")
GLT-40 100,000 BTU/Hour DMS # 13 (0.185") DMS # 27 (0.144")
GLT-60 120,000 BTU/Hour DMS # 7 (0.201") DMS # 23 (0.154")
M anifold P ressure
Natural Gas - 3.5 inches W.C. LP Gas - 4 inches W.C.
A djustments
T hermostat
The thermostat adjustment should not be changed. Check the following before changing the thermostat.
1. With kettle cold, the pressure on the pressure gauge should read in the green vacuum zone (25 to 30 inches Hg
vacuum). If not, see ‘Re-establishing Vacuum” section.
2. The pressure switch may be set too high or too low and causing the out of adjustment condition. A voltmeter should
be used by a properly trained serviceman to determine if the pressure switch or thermostat is actually cycling the
burners. If the pressure switch is found to be cycling the burners, see “Pressure Switch” section.
After verifying that the pressure switch is set and operating properly, the thermostat may be adjusted using the set screw
inside the stem. At maximum setting, the thermostat should cycle off at a gauge pressure reading of 30 psi. Turn set screw
clockwise to decrease pressure and counterclockwise to increase pressure.