DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Relays and Outputs . . . . . . . . . . . . . . . . . . . . . . 2
General Application Information . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Detector Positioning . . . . . . . . . . . . . . . . . . . . . 5
Wiring Requirements . . . . . . . . . . . . . . . . . . . . . 5
Mounting and Wiring Procedure . . . . . . . . . . . . 6
Detector Programming . . . . . . . . . . . . . . . . . . . 9
STARTUP AND CHECKOUT PROCEDURE
(MANUAL
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TEST) . . . . . . . . . . . . . . . . . . . . . . . 10
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 10
Manual
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Selected . . . . . . . . . . . . . . . . . . . . . 10
Automatic
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Selected . . . . . . . . . . . . . . . . . . . 11
Field Testing UV/IR Detectors . . . . . . . . . . . . . .11
Sensor Module Replacement Procedure . . . . 13
Motherboard Replacement Procedure . . . . . . 15
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Viewing Windows/
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Rings . . . . . . . . . . . . . . . 16
O-Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 16
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . 18
DEVICE REPAIR AND RETURN . . . . . . . . . . . . . 18
ORDERING INFORMATION . . . . . . . . . . . . . . . . . 19
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Recommended Spare Parts . . . . . . . . . . . . . . 19
APPENDIX A - FACTORY MUTUAL RESEARCH
(FMR) APPROVAL DESCRIPTION
Illustrations
Figure 1
Detector Orientation Relative to Horizon 5
Figure 2
U7652 Front View . . . . . . . . . . . . . . . . . 6
Figure 3
Vertical Mounting . . . . . . . . . . . . . . . . . 6
Figure 4
Detector Junction Box with Cover
Removed (Terminal Blocks,
Programming Jumpers,
Motherboard Assembly . . . . . . . . . . . . 6
Figure 5
Detector Dimensions . . . . . . . . . . . . . . 7
Figure 6
Swivel Mounting Bracket Dimensions . 7
Figure 7
U7652B Wiring Terminal Configuration 7
Figure 8
Wiring Terminal Configuration for
U7652C with Auxiliary Relay . . . . . . . . . 7
Figure 9
Wiring Terminal Configuration for
U7652C with 4 to 20 ma Output . . . . . . 8
Figure 10
A Typical System Using U7652B
Detectors . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 11
A Typical System Using U7652C
Detectors with Auxiliary Relays . . . . . . 8
Figure 12
U7652C Detector with 4 to 20 ma
Output Wired for Non-Isolated
Current Sourcing Output . . . . . . . . . . . 9
Figure 13
U7652C Detector with 4 to 20 ma
Output Wired for Isolated Current
Sinking Output . . . . . . . . . . . . . . . . . . . 9
Figure 14
Cover Locking Assembly . . . . . . . . . . 13
Figure 15
U7652 Detector Parts Identificaiton . . 14
Figure 16
Self Aligning UV Sensor Module . . . . 14
Figure 17
IR Module with Four-Wire Connector . 15
Figure 18
Location of Capacitor for Increased
Protection from Ground Transients . . 15
Figure 19
UV and IR Spectral Response Range 17
Figure 20
Detector Cone of Vision . . . . . . . . . . . .17
Tables
Table 1
Detector Status Chart . . . . . . . . . . . . . . 2
Table 2
Current Level for Detector Status
(U7652C with 4 to 20 ma Output) . . . . . 3
Table 3
U7652 Typical Response Distances . . 3
Table 4
UV Absorbing Gases and Vapors . . . . 4
Table 5
Programmable Options . . . . . . . . . . . 10
Table 6
Manual
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Troubleshooting . . . . . . . . 11
Table 7
Automatic
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Troubleshooting . . . . . . 12
Table of Contents
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