Greenheck Fire Ready Hood - GRRS - Manual (Page 22)

22 Fire Ready Hood
Low Pressure
HOW TO TEST FUNCTION
a. Unplug one of the wire terminal connections
attached to the pressure switch.
b. LED turns from green to orange blinking with buzzer.
c. Power for gas valve or disconnect turns off.
d. Audible buzzer inside of hood beeps 4 times.
e. Local Alarm Activation “Y0-C0”.
f. Hood remains powered.
Loose Connection on Discharge Hose
HOW TO TEST FUNCTION
a. Unplug the hose quick disconnect coupling to
discharge manifold.
b. LED turns from green to orange blinking with buzzer.
c. Power for gas valve or disconnect turns off.
d. Audible buzzer inside of hood beeps 3 times.
e. Local Alarm Activation “Y0 to C0”.
f. Hood remains powered.
High Temperature Switch
HOW TO TEST FUNCTION
a. Unplug red wire terminal located on terminal strip
#4. NOTE: Do not remove the wire, just unplug the
terminal. You can also use a heat gun on the center
of the hood to simulate a high temperature.
b. LED turns from green to orange blinking with buzzer.
c. Power for gas valve or disconnect turns off.
d. Audible buzzer inside of hood beeps 5 times.
e. Local Alarm Activation “Y0 to C0”.
f. Fan turns on.
g. Fan remains on for 3 minutes after you lower
temperature or put red wire back on.
h. Hood remains powered.
Self-Monitoring System
These functions are to be checked at start-up.
Low Temperature Switches
HOW TO TEST FUNCTION
a. Use heat gun on either left or right low temp switch.
b. Fan turns on.
c. Fan remains on for three minutes after temperature
falls below 150ºF.
High Temperature and Low Pressure Switches
HOW TO TEST FUNCTION
a. Unplug red wire terminal located on terminal strip
#4. NOTE: Do not remove wire, just unplug it’s
round connector. Unplug one of the wire terminal
connection attached to pressure switch.
b. Fan turns on.
c. LED turns from green to orange.
d. Power for gas valve or disconnect turns off.
e. Audible buzzer inside of hood on continuously.
f. Local Alarm Activation “Y0 to C0”.
g. Remote Alarm Activation “Y1 to C1”.
h. Hood remains powered.
Alarm Discharge Switch
HOW TO TEST FUNCTION
a. Depress actuator lever located at the micro-switch
next to tank.
b. Check continuity of both normally open and closed
contacts.
Service Switch in ON (1) Position
HOW TO TEST FUNCTION
a. LED turns from green to blinking orange/green.
b. Power for gas valve or disconnect turns off.
c. No alarm closure at Y1-C1 or Y0-C0.
d. Pressing the reset button will not reset the hood
until the service switch is put back in the off (normal)
position.
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