C-7
ACCESSORIES
ALARM TROUBLESHOOTING AND RESOLUTION
ALARM
POSSIBLE
CAUSES
RECOMMENDED
COURSE OF ACTION
Service Input Alarm
1. Detection tubing pressure
too low (below 160psi) due to
leaks.
2. Detection tubing pressure
too low (below 160psi) due to
low temperatures (below 0°F).
1. Verify system pressure on gauge to right of main control panel or gauge
on suppressant tank. If it falls below green target proceed to step 2.
2. Check the detection tubing circuit for leaks. Repair and then recharge
the circuit with Nitrogen to 195psi as described in the activation section.
Verify pressure holds for at least 30 min.
3. Press reset on main control panel. The unit is now ready for operation.
1. Enable temporary bypass until ambient temperatures around unit rise
above 0°F.
Enabling Temporarily Bypass (until cause of leak resolved)
1. Turn keyed switch to "Bypass"
2. Hit reset on main control panel
CAUTION: Resolve low pressure as soon as possible. Further loss of
pressure can lead to a discharge alarm (without an actual suppressant
discharge) that disables the unit and requires the suppressant tank to be
reconditioned or replaced.
3. To return to normal operation, turn keyed switch back to "Enable" and
then press reset on the main control panel.
Smoke Alarm
1. Smoke detector senses
smoke or particulate in fan
exhaust.
1. Verify source of alarm and resolve. Both smoke and bypass of particulate
due to filter damage can be sources for alarm.
2. Press reset on smoke detector body.
3. Press reset on main control panel. The unit is now ready for operation.
Enabling Temporarily Bypass
1. Turn keyed switch to "Bypass".
2. Hit reset on main control panel.
CAUTION: Resolve cause of alarm as soon as possible to maintain early
detection feature provided by the smoke alarm.
3. To return to normal operation, turn keyed switch back to "Enable" and
then press reset on the main control panel.
Intake Damper(s) Alarm 1. After fan is started, intake
damper(s) fails to open in 10
seconds. Damper's actuator
switch fails to signal damper is
open.
1. Repair damper. Possible causes include failed actuator, failed actuator
switch, obstruction in damper, loose actuator connection to damper.
2. Press Firetrace "Silence/Reset" button twice
3. Press reset on main control panel. The unit is now ready for operation.
Contact a Lincoln Electric technician for possible temporary resolutions.
Exhaust Damper(s)
Alarm
1. After fan is started, exhaust
damper(s) located under fan
fails to open in 10 seconds.
Damper's actuator switch fails
to signal damper is open.
1. Repair damper. Possible causes include failed actuator, failed actuator
switch, obstruction in damper, loose actuator connection to damper.
2. Press Firetrace "Silence/Reset" button twice
3. Press reset on main control panel. The unit is now ready for operation.
Contact a Lincoln Electric technician for temporary resolutions resolutions.
Discharge Warning
1. Suppressant discharge
triggered by heat induced
rupture of detection tubing.
2. Extremely low detection
tubing pressure.
1. Repair unit as required and recondition as described in the discharge
recovery section.
2. Press Firetrace "Silence/Reset" button twice.
3. Press reset on main control panel.
1. Repair detection tubing circuit as described in the "Service Input Alarm"
section. The suppressant tank will need to be reconditioned or replaced.
PRISM
®
Summary of Contents for Prism 4
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