Lincoln Electric Prism 4 Operator's Manual page 34

PRISM® 4
ALARM TROUBLESHOOTING AND RESOLUTION
ALARM POSSIBLE
CAUSES
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 37°F).
Smoke Alarm 1. Smoke detector senses smoke or
particulate in fan exhaust
Intake Damper Alarm 1. After fan is started, intake damper
fails to open in 10 seconds. Damper's
actuator switch fails to signal damper
is open.
Exhaust Damper Alarm 1. After fan is started, exhaust damper
located under fan fails to open in 10
seconds. Damper's actuator switch
fails to signal damper is open.
Discharge Warning 1. Suppressant discharge triggered by
heat induced rupture of detection
tubing.
2. Extremely low detection tubing
pressure.
RECOMMENDED
COURSE OF ACTION
1. Verify system pressure on gauge to right of main control panel or gauge on
suppression 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
37°F.
Enabling Temporary Bypass (until cause is resolved)
1. Turn keyed switch to "Bypass"
2. Hit reset on main control panel
CAUTION: Resolve low pressure due to leaks 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.
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 Temporary 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.
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.
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.
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.
C-6
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