Vulcan-Hart GRS25 Service Manual page 4

SECTION I
GRS,GRD AND GRC SERVICE CHECKS & ADJUSTMENTS
WARNING: UNPLUG FRYER BEFORE SERVICING.
WARNING: SHUT OFF GAS BEFORE SERVICING.
WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR
MEASUREMENTS WHILE POWER IS APPLIED TO THE FRYER. EXERCISE EXTREME
CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT
POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST.
VENTILATION CHECKS
NOTE: Do not connect the fryer flue directly to the vent.
CAUTION: The vent of the appliance should be checked every 6 months for restrictions.
GAS SUPPLY CHECKS
NOTE: If gas supply piping system is going to be tested at a test pressure of in excess of 1/2 psig (3.45 Kpa),
the fryer and its individual shut-off valve must be disconnected from the supply line. If the gas supply
pipping system is going to be tested at a test pressure equal to or less than 1/2 psig (3.45Kpa), the
individual manual shut-off valve must be closed during testing.
The fryer burners operate in conjunction with a combination gas valve pressure regulator. Verify that the valve
is set for a rating of 4" Water Column for Natural Gas and 10" Water Column for Propane Gas.
Verify that the facility pressure is at least 5" Water Column for Natural Gas and 11" Water Column for Propane.
Also verify that the gas connection pipe line is at least 1/2" for a single body fryer and
1-1/14" for a battery of fryers.
Verify that the fryer is installed in accordance with all local and state authorities having jurisdiction.
GAS CONNECTION CHECK
1. Insure that facility main gas valve is open.
2. Insure that fryer combination gas valve is open.
3. Using a soap solution check for gas leakage at all gas line connection points.
STORE LINE GAS PRESSURE CHECK
1. Connect manometer to the manual gas shut off valve pressure tap.
2. Be sure gas supply line is open and that shut off valve is open
3. Manometer reading should be at least 5 in. water column natural (7 in. for battery) and 11 in. water column
propane (12 for battery).
4. If the above is not proven instruct store owner to have pressure problem corrected before
performing any other service work to fryer(s).
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