Larkin Auto Fan Control, Инструкции по установке, эксплуатации и обслуживанию

Страница: 13 / 14

13
The system may also be manually operated by turning the light and fan switches “ON” and “Off”; however, the
system will enter “Auto Run Mode” if the system detects a temperature rise associated with cooking operations. If
the system changes from “Manual Mode” to Auto-Mode” because of a temperature rise, it will shut down
automatically once the system no longer detects a cooking operation.
Note: The system will not shut down
manually or automatically until all the above shut down conditions have been met . For multiple hood
systems, the warmest sensor must cool to the factory set point of 88° F. before automatic de-activation can take
place.
WARNING:
It is not recommended to adjust this system except in extreme cases. Please consult factory
before attempting any adjustments.
The microprocessor-based controller contains 4 basic adjustments:
Note: If your system is not operating properly, do not attempt adjusting controller before contacting
customer support at 800-322-4036.
The AFC system is designed to shut down the light(s) and supply fan(s) and continue to run the exhaust fan(s) in
the event of fire and activate two Normally Open/Normally Closed (NO/NC) spare dry contacts (may be used for
building alarm, horn strobe, etc.). Terminal STH (Shunt Trip Hot) will also provide 115 VAC for shunt trip breaker
in fire mode.
Maintenance
CAUTION! More than one disconnect switch may be required to de-energize the equipment before
servicing. Ensure all power sources have been disconnected before installing or servicing the system
.
•
The Control box door should be securely closed after opening to avoid tampering or electrical shock.
•
The Control Box is a type1 electrical enclosure and is not watertight. Do not spray, soak, or submerge with
water. Control Box should only be cleaned with a mild cleaner and damp cloth.
•
Hood temperature sensor(s) should be cleaned weekly to prevent grease build up and ensure a quick
response to temperature changes. Sensor(s) should be cleaned with a mild cleaner to remove grease.