TEC247 Fire & Extinguishant Control Panel
– INSTALLATION & OPERATION MANUAL
DOC NO. PRMAN-0003 TEC247 Rev 04.12 191209.docx
- 13 -
E. &O.E.
7.
TROUBLESHOOTING
PROBLEM
SOLUTION
CANNOT
RESET
FIRE
CONDITION
▪
Remove zone wiring and replace the 3k3 in the affected zone and reset the panel.
▪
If the panel returns to normal operation there is a fault on the zone causing this condition and
you should then proceed as follows:
-
Measure the line resistance (should be ±3k3).
-
A measurement of ± 680 Ω probably indicates that there is an activation of a mechanical
device e.g. MCP, Relay, flame detector relay etc.
-
If this reading is normal then there is probably a faulty detector that when powered draws
too much current causing a volt drop on the zone triggering a Fire condition (note there
may be more than one).
-
Change detectors on the zone with new detectors until the faulty detectors have been
located, or
-
Remove and clean all detectors on the zone and place them on test before replacing
them.
-
If the panel does not return to normal, remove all internal components and send them in
for repair.
CANNOT
RESET
FAULT
CONDITION
▪
Remove zone wiring and replace the 3k3 in the affected zone and reset the panel.
▪
If the panel returns to normal operation there is a fault on the zone causing this condition and
you should then proceed as follows:
-
Measure the line resistance (should be ± 3k3)
-
A higher resistance indicates an open circuit fault this could be caused by a break in the
cabling.
-
Place a short on the zone in various places until the faulty section is located
▪
No End-of-Line installed.
-
Install a 3k3 resistor across positive and negative on the last device.
▪
One or more detectors may have been removed.
-
Replace all missing detectors.
▪
Detector not driven home.
-
Make sure the LEDs on the detectors lines up with the locator stripe on the detector
base.
▪
Incorrect wiring.
-
Make sure the wires are connected to the correct points on the detector base.
-
Make sure that the wires have not been fastened on the PVC coating.
-
A very low resistance indicates a short circuit fault this caused by MCP, Relay, Flame
Detector Relay etc., not installed correctly.
-
Make sure that the correct contacts are being used on these devices.
-
Detector wiring crossover.
-
Make sure the same colour cable is used on positive and negative throughout the whole
installation.
-
Bare wires touching.
-
Create an open circuit on the line in various places until the faulty section is located.
▪
If there is a Short Circuit condition on any zone for longer than 2 minutes, the control panel
will automatically isolate the faulty zone.
NB:
When re-installing the zone, ensure that the wire is trapped securely in the
connector and not under the cage.
▪
If the panel does not return to Normal, remove all internal components and send them in for
repair.
CANNOT
RESET
BELL
FAULT
CONDITION
▪
The 2 bell circuits on the panel are monitored in the same way as the zone
’s circuits,
therefore to repair this condition, follow the same procedure as a Fault Condition.
NB:
If a zone is triggered into a Fire condition while the bell Fault condition is active,
the bell relay will not operate and therefore the bells will not sound. This safety
feature ensures that there is no power loss due to a short circuit condition on the
bell circuits.
