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The start up is now complete. To test the systems fire suppression interlock, and Auto Fan Control for IMC 507.1.1
compliance, follow the Test Procedures in the next section. For operation information and system adjustments see
System Operation section.
Test Procedures
Testing of the System for IMC 507.1.1 Compliance: Please read complete test procedures prior to
attempting function test for Fire Marshal.
Note: For timely automatic de-activation, the test should be done in the following order: 1) Auto-
Activation, 2) Fire System Activation, 3) Auto Shut-Shut Down. When the test is done in this sequence,
the Micro-Switch trip will bypass the 30-minute run timer initiated on start-up and the system will Auto-
Shut Down in 3-5 minutes. If not, the system will run for approximately 33 minutes before shutting down.
1.
Cycle power to the Control Box to reset the system prior to test.
2.
Place the light and fan switches in the “OFF” position. Indicator lights should be “OFF”. Fan(s) and light(s) should
be de-energized prior to initiating the test procedures below.
3.
Conduct the test by applying heat to any one of the hood sensor(s) located in the center of the hood(s), in
between and in line with the light(s) and in front of the grease filters.
Note:
It does not require much heat. The
palm of your hand or hot water should be enough.
DO NOT USE A TORCH!
When the hood sensor(s) detect a
rise in temperature the fan(s) and light(s) will automatically energize. Both Fan and light indicator lights will
illuminate indicating that power is going to the fan(s) and light(s). For multiple hood systems, when any hood
sensor detects a temperature rise, the fan(s) and light(s) will automatically energize for all hoods connected to
that Control Box.
Note:
Allow the system to continue operating after the automatic activation to perform
fire system test described next.
4.
For this portion of the test, the system should still be operating in automatic mode, described above. The system
is designed to shut down the lights and MUA fan(s), continue to run the Exhaust fan(s), and provide 120V for
shunt trip breaker(s) in Fire Mode. To conduct this test, simply trip the fire suppression Micro-Switch to simulate
Fire Mode. The Exhaust fan(s) should continue to run, the light(s) and MUA fan(s) should shut off, the Auxiliary
Contacts should change state and 120V should be provided for shunt breaker(s). After testing, place the Micro-
Switch back to the normal position. The light(s) and MUA fan(s) should re-energize. Shunt trip breakers will need
to be reset, if applicable. The system will shut down automatically after the sensor(s) have cooled to the factory
pre-set Low End Turn Off temperature of 88° F. (may be accomplished with cool water), and the system detects
no additional rise in temperature, within 3-5 minutes. This will complete the test procedure.
If the light and/or fan switch have been turned to the “ON” position the system is running in manual mode and will
not shut off automatically, it must be manually shut down. The switches must be in the “OFF” position for the auto
de-activation portion of the system to function. In normal operation there will be a factory set 30-minute Initial
Safety Timer that must elapse before the system will de-energize. For multiple hood systems, the warmest sensor
must cool to the factory set point before automatic de-activation will occur.
System Operation
To comply with the International Mechanical Code 507.1.1 the commercial kitchen exhaust system shall operate
during the cooking operation and have automatic controls that will activate the fan(s) no more than 15 minutes
after the first appliance under the hood has been turned on.
The AFC (Auto Fan Control) will accomplish this by automatically activating the fan(s) and light(s) anytime a hood
sensor detects a rise in temperature. The fan and light indicator lights will be illuminated indicating power is going
to the fan(s) and light(s). The fan(s) and light(s) will continue to operate in Auto Run Mode until all of the following
shut down conditions are met: the fan and light switches are in the “OFF” position, the factory set 30 minute Initial
Safety Timer has elapsed, the cooking equipment has been turned off, the sensor(s) do not detect a temperature
above the factory pre-set Low End Turn Off (88° F.) for 3-5 minutes.
Summary of Contents for Auto Fan Control
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