26
Capture Ray
®
UV Operation & Maintenance Manual
OM-0
10/0720
17/re
v4/EN
ALARMS
“Low airflow”
– Pressure switch from each hood is connected to terminals 1 and 15. Alarm is
activated on switch closure. There is a 60 sec. delay to activate this alarm. It allows the pressure to
built-up in a system after exhaust fan starts as well as to prevent false alarms on pressure fluctuation.
UV in affected hood only is turned off.
“UV failure”
– there is a 30 sec. delay to allow all UV tubes to ignite. LED indicators on face of
a hood show which lamps are Off. UV failure switch is located on each UV ballast board and is
connected to terminals 5 and 1. UV stays on when alarm active.
“Clean UV”
and
“UV End of Life”
alarms are activated when preset number of hours of operation is
reached. By default the settings are 1600hrs for Clean UV alarm and 13000 for UV End of Life. Those
statistics don’t reset automatically so it can be calculated how long overdue those services are. To
reset those statistics a user name and password are required. UV stays on when alarm active.
“Filter removed”
– when during operation a filter is removed from a hood, contacts connected to
terminals 17 and 1 will activate this alarm. UV in affected hood is turned off.
“UV door open”
- if during operation any of hood UV access door is open, contacts connected to
terminals 16 and 1 will activate this alarm. UV in affected hood is turned off.
CRITICAL ALARMS
Critical alarms cause the UV to be turned off. The critical alarms are: “Low airflow”, “Filter removed”
and “UV door open”.
Understanding critical alarms.
When one of those critical alarms occurs, the screen switches automatically to “Alarm info” screen
and displays the alarm on a red backlit screen. The system status remains “System On” however UV
status shows “UV off”.
It is important to understand that the UV output from the control panel remains “on” to keep all UV
hoods operational. Only UV in affected hood is turned off locally by the internal relay in the UV hood
compartment. The affected hood can be located by inspecting the LED indicators on face of each
hood. Hood with UV off will have all 6 LEDs off.
