13
Motor HP Changes:
Connect the keypad to the VFD you wish to re-program. Using the above instructions,
navigate to parameter P320.06. This will display the HP in Kw that the VFD has been set to for that fan motor. If the
fan HP needs to be changed, depress the “Scroll Up” or “Scroll Down” button to change the setting to the correct
Kw for the HP desired
(See HP to Kw conversion chart Pg. 15)
. Depress “Enter” button and hold for 3 seconds
until “Save” is no longer flashing. Depress “Return” to return to main screen.
The startup 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 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
automatically.
1.
Cycle all control power to the Control Box and VFD’s to reset the system prior to test. Fan(s) and light(s) should
be de-energized prior to initiating the test procedures below.
2.
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 buttons will illuminate on
the display indicating that power is going to the fan(s) and light(s). For multiple hood systems, when any hood
sensor(s) 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 below.
3.
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 trip breaker(s). “FIRE” will be on the display
indicating that the system is in Fire Mode. After testing, place the Micro-Switch back to the normal position. The
light(s) and MUA fan(s) should re-energize. Shunt trip breaker(s) 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 Fan and or Light button has been manually depressed and the system is running in manual mode it must be
manually shut down. 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-DCV (Auto Fan Control with Demand Control Ventilation) will accomplish this by automatically activating
the fan(s) and light(s) anytime a hood sensor detects a rise in temperature.
Summary of Contents for AFC-DCV
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