FHSD700C Series Product Guide
GE Security
4 Starting Up
After installation, it will be necessary to power up the system for configuring the detector according to
site requirements and also to ensure that the detector and associated pipe network are properly
installed.
The system takes approximately 30 seconds to power up.
If the system or any detector on the network fails to power up, re-check that all power wires are
securely connected to their respective terminals and the polarity is correctly maintained.
During power-up, the following sequence of events occurs:
Sounder
beeps
Aspirator
starts
Display shows a rolling text message showing:
FHSD700C
Software version: VERSION *.**
Optional text 1
Optional text 2
Optional text 3
Fault indicators are activated for current faults
Current smoke background level (% obs/m) is displayed
Optional text information are user definable options differing from the factory default settings:
1. REM PANEL - the unit may be configured to operate the display panel remotely using the RS485
communications.
2. NO DET FLOW - the flow measurement through the detector chamber itself may be disabled
The detector(s) may show faults immediately after power up and this is normal. Reset the detector(s) to
unlatch the relays and fault LEDs. The fault LEDs on any display connected to the system will light up
(this is normal).
4.1 Flow Normalization
After the initial power-up of the system, flow normalization is necessary for the detector to learn the air
flow characteristics of the system. To normalise the air flow for a detector, please refer to the following
sections.
4.1.1 Wide Bore systems (FHSD720C, FHSD721C / FHSD721DC,
FHSD724DC, FHSD726DC)
Air-flow is directly affected by the fan speed in wide bore systems. The fan speed is programmable from
3 to 10 (please see Configuration Mode Section
CONFIGURE: Configuration Mode
on page 21) and the
factory default setting is 5. It is recommended that it be left at 5 unless otherwise advised (e.g. long pipe
lengths).
Once the pipe work has been completed it is necessary for the unit to learn the values of flow rates at
each inlet. Once done, all displayed flow rates will be normalized to 100%. The process will take about
six minutes, and a rolling text message indicates progress.
To normalise air flow, please follow these steps:
1. Press
MENU
.
2. Use
Parameter
UP
&
DOWN
(Scan or Isolate buttons) to scroll to
CONFIGURE
.
3. Press
ENTER
(Sounder silence button).
16
www.gesecurity.net
