Sentry CR105 Manuel télécharger pdf (Page 19)

U7698E Flame Detector

Part 334614E

E 2002 Nordson Corporation

Manual 34-49

Major Fault Mode

The system goes into major fault mode when faults are detected in both

detector heads, preventing the detection of a fire.

WARNING: Immediately correct any condition that causes a fault or major

fault. Do not operate the coating system with the flame detector shut down

or bypassed, or with a malfunctioning flame detector component.

In major fault mode,

S both amber DET. HEAD FAULT indicators light.

S the FAULT DETECTED alarm turns on (continuous tone).

S the booth fire interlock opens, shutting down the booth and application

equipment.

S the conveyor continues to run.

NOTE: If only one detector head is installed, any fault is treated as a major

fault.

When the fault is corrected, the fault indicator(s) and alarm turn off and

Normal mode resumes.

Fire Mode

When a fire is detected,

S the red FIRE DETECTED indicator turns on.

S the FIRE DETECTED alarm turns on (fast intermittent tone).

S booth and conveyor interlock relays open. The booth, application

equipment, and conveyor will shut down.

S fire interlock contact (customer use) changes state. Customer use

equipment is either activated or deactivated, depending on use.

Reset

To reset a detector head after a fault has been corrected, move the DET.

HEAD RESET switch toward the appropriate detector head fault indicator,

then release it.

Through-the-Lens Test

The detector heads automatically perform periodic through-the-lens tests to

check their operation. If a test fails, the detector head goes into fault mode.

Refer to Troubleshooting for diagnostic and correction procedures.

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Sentry CR105 Manuel Page 19