Melink Intelli-Hood Controls Reference Manual page 17

PROBLEM:
KEYPAD
1
APPEARS
NORMAL
BUT FANS
HOOD
NOT RUNNING
KEYPAD
2
DISPLAYS
"E" AND
BARGRAPH
FLASHING
KEYPAD IS
3
BLANK AND
FANS ARE
RUNNING
KEYPAD IS
4
BLANK AND
FANS ARE
NOT RUNNING
KEYPAD SHOWS
TEMP FAULT
5
1ST LED AND 1ST LED
FAULT LIGHT
KEYPAD SHOWS
6
DRIVE FAULT
2ND LED AND
2ND LED
FAULT LIGHT
CLEAN
7
LIGHT
FLASHES
RED/GREEN
HOOD
KEYPAD SHOWS
OPTICS FAULT
8
3RD LED
3RD LED AND
FAULT LIGHT
MELINK
Intelli- Hood Operator
R
TROUBLESHOOTING
@ MELINK KEYPAD
a. Determine which hood is not working - refer to digit next to bar graph.
b. Determine fan speed by counting # of bars illuminated on bar graph, if any.
CLEAN
c. Push 100% bypass switch to see if all fans go to full speed.
d. Check if exhaust fan on roof is running.
FAULT HOOD
%
- Check if fan disconnect switch is turned on.
- Check if fan belt is adjusted for proper tension and replace if necessary.
- Check if motor is functional and replace if necessary.
CLEAN
a. Press the 100% bypass switch to return to the 'auto mode'.
FAULT HOOD
%
a. Press fan switch on Keypad to see if Keypad activates.
b. Check for tripped breaker that feeds the I/O Processor.
CLEAN
c. Open I/O Processor panel to verify power LED is on.
d. Check for tripped breaker inside I/O Processor. Reset if necessary.
FAULT HOOD
%
a. Press fan switch on Keypad to see if Keypad activates.
b. Check breakers for I/O Processor and exhaust fans.
CLEAN
c. Check display on Drives for a fault (ie.. OC1,OH2).
e. Press the Drive reset switch, or turn off breaker and turn back on after 30 sec.
FAULT
HOOD
%
f. Refer to Troubleshooting @ Drive Keypad on other side.
a. Determine which hood has a 'temp fault' - refer to the digit next to bar graph.
b. Check cable connections between each Temp Sensor and I/O Processor.
CLEAN
c. Check to see if resistance at Temp Sensor is about 100 Ohms.
FAULT
HOOD
d. Check Simplissimo hood menu #6 is set to correct number of Temp Sensors.
%
a. Determine which hood has a 'drive fault' - refer to the digit next to bar graph.
b. Check cable connections between each Drive and I/O Processor.
CLEAN
c. Check display on Drives for a fault (i.e..OC1.OH2).
d. Press Drive reset switch, or turn off breaker and turn back on after 30 sec.
FAULT
HOOD
%
e. Refer to Troubleshooting @ Drive Keypad on other side.
a. Determine which hood needs Optics cleaned - refer to digit next to bar graph
b. Remove Optic covers for that hood and clean lenses with a clean soft cloth.
CLEAN
c. Press the fan switch off... and on again to recalibrate the Optics.
FAULT
%
a. Check for blockage of infrared beam, i.e. cleaning rag or fire suppression pipe.
b. Check 'gain' switch on Optic receiver board to verify proper hood length.
c. Check alignment of Optics in Simplissimo System Menu #9.
CLEAN
d. Check cable connections between Optics and I/O Processor.
... press the fan switch off and on again to recalibrate the Optics.
FAULT
HOOD
%
.
ITEMS TO CHECK:
HOOD
2-1
Rev. 10-01