Chapter 4 - Operation; Section 4-1- Introduction; Section 4-2 - Supervision - Wheelock SAFEPATH4 Application, Installation, Operation, And Maintenance Manual

Chapter 4 - OPERATION

Section 4-1- Introduction

This chapter describes the operating characteristics of the panel. Included is information about
the following panel features:
• Supervision
• Audio Notification Appliance Output Circuit Supervision
• Amplifier Supervision
• Actions that Initiate Alarms

Section 4-2 - Supervision

A TROUBLE LED indicates that the supervisory functions have detected a malfunction in the
panel. When a trouble condition is detected, the panel may not be able to receive and/or
broadcast messages from the host voice evacuation panel.
If a trouble condition is detected by any of the supervisory functions, the internal sounder of the
SP40/2 voice evacuation panel will operate, the audio booster Form C TROUBLE relay (normally
energized) will change state, and the yellow TROUBLE LED will turn "ON". The Trouble Status
Relay may be used to provide an external audible or visual alert to indicate that the audio booster
is in a trouble condition. At the same time one of the yellow trouble location LEDs will identify the
location of the trouble condition. If a trouble condition is indicated, follow the procedures in
Chapter 7 "Troubleshooting".
WARNING: DO NOT LEAVE THE PANEL IN A TROUBLE CONDITION, AS IT MAY NOT
PLAY WARNING MESSAGES FROM THE VOICE EVACUATION PANEL, WHICH COULD
RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR
OTHERS. IF THE PANEL INDICATES A TROUBLE CONDITION:
REQUIRED ALTERNATIVE SIGNALING AND (2) HAVE QUALIFIED SERVICE PERSONS
IMMEDIATELY REPLACE UNIT(S) THAT HAVE MALFUNCTIONED.
WARNING: MESSAGES REQUESTED BEFORE AND DURING A TROUBLE CONDITION
MAY NOT BE HEARD, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS. IF MESSAGES REQUESTED BEFORE AND
DURING A TROUBLE CONDITION ARE STILL NECESSARY, THEY SHOULD BE REPEATED
WHEN THE PANEL IS RETURNED TO NORMAL.
Audio Notification Appliance Output Circuit Supervision (SPB-160 and SPB-80/4)
The SPB-160 has two 80 watt circuits, while the SPB-80/4 has one 80 watt circuit. The audio
notification appliance output circuit uses Class B, Style Y wiring, and is supervised for open and
short circuits. Output circuit supervision requires installation of UL Listed 10K Ohm, EOLR on the
output circuit. A sensed open circuit trouble will illuminate D30 for AUD2 and D31 for AUD1
AUDIO OPEN LED. See Figure 7-1A/7-1B on Page 49/50 for LED location.
Visual Notification Appliance Output Circuit Supervision (SPB-80/4)
The SPB-80/4 has two 2 amp visual notifications circuits, while the SPB-160 has none. The visual
notification appliance output circuit on the SPB-80/4 uses Class B, Style Y wiring, and is
supervised for open and short circuits. Output circuit supervision requires installation of UL Listed
10K Ohm, EOLR on the output circuit. A sensed strobe open circuit trouble will illuminate D36 for
STB1, D38 for STB2. See Figure 7-1B on Page 50.
(1) PROVIDE UL
42