VESDA by Xtralis
VESDA VFT-15 Product Guide
www.xtralis.com
21
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 microbore tubes are properly installed.
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The system takes approximately 30 seconds to power up.
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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:
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Sounder beeps
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Pump starts
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Display shows a rolling text message showing:
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IFT
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Software version: VERSION *.**
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Optional text 1
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Optional text 2
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Optional text 3
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Fault indicators are activated for current faults
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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 may show faults immediately after power up and this is normal. Reset the detector 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
Flow normalization should be carried out as a result of a new installation or after changes or maintenance to
the system or microbore tubes. It is necessary for the detector to learn the air flow characteristics of the
system.
Microbore systems rely on the pump to provide the vacuum rates in the system. The pump speed should not
be altered from the factory default value under any circumstances.
To normalize the air flow for a detector using the display:
1. Ensure that the Front Cover is fitted.
2. Leave the detector powered up for a minimum of 60 minutes. Ensure that the detector is stable during
this time.
3. Press
MENU
.
4. Use Parameter
UP
&
DOWN
(Scan or Isolate buttons) to scroll to
CONFIGURE
.
5. Press
ENTER
(Sounder silence button).
6. Enter Level 1 Access Code (260). Refer to Section 5.1 for more information on Access Codes.
7. Use Parameter
UP
&
DOWN
to reach
TESTTIM
.
8. Press
ENTER
.
A rolling text message shows progress. When complete, the display resumes at OBSC/M 0.00% and
all displayed flow rates will be set to 100%.
Normalization takes about 10 minutes. It is advised that the user does not try to change any settings or
revert to the menu during the normalization process.
On completion of the flow calibration process, document the values identified in the following procedure.
1. Enter the Maintenance list to display REL in.
2. Record REL IN with system monitoring in overall position. Reset the unit to initiate a scan.
3. Record REL IN values for each sector.
4. Record the ABS IN value which is also in the Maintenance list.
