Det-Tronics C7050 A, C, G, P UV Flame Detector - Manual (Page 24)

DEVICE REPAIR AND RETURN
Prior to returning devices or components, contact the
nearest local Detector Electronics office so that an RMI
(Retur n Material Identification) number can be
assigned. A written statement describing the malfunc-
tion must accompany the returned device or component
to expedite finding the cause of the failure, thereby
reducing the time and cost of the repair to the customer.
Return all equipment transportation prepaid to the
Minneapolis location.
OFFICE LOCATIONS
6901 West 110th Street
Minneapolis, Minnesota 55438 USA
Telephone (612) 941-5665 or (800) 765-FIRE
Facsimile (612) 829-8750
www.detronics.com
E-mail: [email protected]
Cable Detronics
Telex 6879043 DETEL UW
Detector Electronics Corporation
13949 Williams Road
P. O. Box 1329
Glen Ellen, California 95442 USA
Telephone (707) 996-0196
Facsimile (707) 996-0197
Voice Mail Box Number 930
22
Table 5—Troubleshooting Chart
Upper Displays
Lower Display Status
Detector Zone
0 0 0 Keylock switch is in RESET position, or the external inhibit is being used.
(Outputs inhibited, except Status outputs.)
1 or 2 1 - 8 1 Keylock switch is in TEST position. (Outputs inhibited except Status
outputs.)
1 or 2 1 - 8 2 oi fault - either the oi ring and/or the window of the detector indicated in the upper
left display is dirty, or the detector module has lost sensitivity, or there is an open
wire between the detector and the controller. The upper right display indicates the
zone affected.
Blank 1 - 8 3 One or more detectors are responding to a UV source that is not large enough to
reach the fire threshold programmed into the controller. One or more detectors may
be sun sensitive (if located outside). Alternatively, there may be a high multiple
count rate in one of the modules (this can be checked by using the count mode test
of the controller as described in the “Checkout” section). FAULT LED is not turned
on. Normally energized fault output remains energized.
0 0 4 Low +290 vdc caused by a shorted “A” lead or controller malfunction.
0 0 5 High +290 vdc caused by a failure in the regulating network in the controller.
Blank 1 - 8 6 Fire Output signal - blinking ZONE OUTPUT LED indicates fire location. Steady
ZONE OUTPUT LED indicates that the detectors in that zone have responded to a
UV signal, but are no longer responding.
7 Not used.
1 or 2 1 - 8 8 Controller has been placed in “count” mode (see “Checkout” section). Pushing and
releasing both SELECT and TEST/ACCEPT buttons at the same time while the
keylock switch is in the TEST position changes the lower display to a numeral “8” -
the count mode for checking the count rate of each zone.
Blank Blank Blank FAULT LED on. There is a problem in the R7404 microprocessor circuitry. Place
keylock switch in RESET, push and release LAMP TEST pushbutton. If operation
does not return to normal, replace the entire R7404. Make sure the new R7404 is
programmed the same as the R7404 being replaced.
Blank Blank Blank No LEDs on or displays on. Check input power to controller or blown fuse in con-
troller. See separate figure for location.