Chemtrac Auto Clean UV254, Руководство пользователя, Страница: 35 / 41

Chemtrac UV254 Monitor
– UVM5000 v 2.1
Chemtrac, Inc. 34
15 Troubleshooting Guide
An operator has three sources of information for system diagnostics:
1. LEDs on the main circuit board
2. System alarms displayed on the operator interface panel
3. Raw
sensor data displayed via the “Secondary Data” menu on
the operator interface panel
15.1
Main Circuit Board LEDs
If the system ever “freezes”, open the door and check the state of the LEDs on the Main Control Board.
Normally, the pattern of lighting from the LEDs change in specific sequence to indicate different states of
operation. If the LEDs are not changing after one minute, make a note of which ones are on or off, and
compare that pattern to the table below. In the table, a zero means an LED is OFF, while 1 means an LED is
ON.
Warning : The UV light may be left on when the door is opened. Make sure you have appropriate eye
protection or restart with the door open.
LED4 LED3 LED2 LED1 PROBLEM SOLUTION
0 0 0 0 No power
Check power connections
Check fuse on main circuit board. If blown
replace with 20mm x 5mm
1 1 0 0 Bad reference position check
Check reference microswitch on motor bracket.
If damaged it may need to be replaced.
Check set screw attaching rotating mechanism
to motor shaft is tightened on the flat of the
motor shaft
If motor does not move shortly after startup,
check motor connection to main circuit board.
Possible bad motor or motor controller on
main circuit board
1 0 1 0 Communication error to sensor board
Check connections from main circuit board to
sensor board.
Check for breaks in the blue-ribbon cable.
May need to replace the sensor board.
1 0 0 1 Communication error to display board
Check serial and power connections to display
board.
May need to replace display board.
Note: Each UVM5000 is factory-calibrated to the specific components and the finished construction of the unit.
Information for the calibration of a unit is stored on the main circuit board. Therefore, swapping boards means
the calibration for a given unit is no longer correct as it based on the precise relationships between the
components. When communication issues arise that could be an indication of circuit board failure or damage,
contact Chemtrac for assistance.