SAMUEL JACKSON HG-1-1701, Руководство по эксплуатации и обслуживанию

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PAGE 13of 46 HG-1-1701 GAS-FIRED HEATER
LAST UPDATED: JAN-25-2022 © SAMUEL JACKSON, INCORPORATED 2011 ALL RIGHTS RESERVED
SYSTEM TESTS
Modulating Motor Test - Allows the
operator to stroke the motor driven
valve and observe the pointer on top of
the valve body.
Pushing the Mod Motor On/Off
pushbutton applies voltage to the motor
and the position is set by pressing the %
indicator below the actuator. A keypad
will appear which allows entry of the
exact percentage desired. Stoking from
0-100% shows that the valve is
functioning properly.
Explanation of Gas Leak Test -
Every time the heater is turned off, one of two gas leak tests will be performed
automatically. The heater will alternate between the two tests after each normal shut
down. The test takes about 10 minutes to perform, and the status of the tests is shown on
the touch screen. Leak Test 1 checks the integrity of the safety shut off valve SSOV1.
With gas evacuated from between the valves in the gas train, if gas builds up pressure,
then gas is leaking past the “upstream” SSOV1. For Leak Test 2, the gas train is charged
with gas at the start of the test. If gas leaks out of the gas train through “downstream”
SSOV2 or fittings, then a downstream leak exists. An ERROR will be displayed if one of
these two tests fail. See the
ERROR & ALARM EXPLANATIONS section for ERROR 435
& 617. Power must be left on to the heater for at least 10 minutes after shutdown for
these tests to be performed. The heater can be restarted at any point during the test.