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Integrated Fire Protection System
F
Electrical Section – Dry-pipe Vacuum Sprinkler System - Electric Release
FM-060M-0-114B
3.2 Vacuum Pump Control
The system is designed to maintain a level of vacuum in the
piping network between -0.150 BAR and -0.180 BAR.
These values are fixed and cannot be changed.
3.2.1 Supervisory pressure
The pump starts at -0.150 BAR and stops at -0.180 BAR.
- 0 . 1 5 0 B A R + D
When the pump is in operation, the sign [
] appears to the
right of the first line.
Note
: The vacuum pump will not operate if a trouble
condition is present on the
FLX-PC
®
unit.
3.2.2 Forced Shutdown Reset
The forced shutdown of the vacuum pump takes place when
the deluge valve is operated, an automatic sprinkler has
been activated or that the vacuum pump has worked for a
period of more than 35 minutes.
- 0 . 1 8 0 B A R * D
When the pump is shutdown, the sign [
] is displayed to the
right of the first line.
To allow the vacuum pump to start, you must first correct the
situation and put the system in normal condition of operation
(refer to section
B
MECHANICAL SECTION
).
Once the system is back in operating condition, press and
hold the button for 5 seconds to restart the vacuum pump.
Release the button as soon as the pump starts.
Note
: The history display appears after 3 seconds; do not
release the push-button before the end of 5 seconds.
3.3 Low and High Pressure
A supervisory signal is transmitted to the release control
panel in the following situations:
- 0 . 1 4 0 B A R D
L O W P R E S S .
When the vacuum level reaches -0.140 BAR. This can
happen if the vacuum pump does not work. Refer to
section
D
VACUUM SUPPLY
to correct the situation.
If the vacuum level reached -0.220 BAR, this indicates a
high level of vacuum and this situation is abnormal. Refer to
section
D
VACUUM SUPPLY
to correct the situation.
- 0 . 2 2 0 B A R D
H I G H P R E S S .
Note
: Supervisory signals are kept latched for a period of
5 seconds.
3.4 Alarm Pressure
An alarm pressure signal is transmitted to the release control
panel when the vacuum level reaches -0.130 BAR.
- 0 . 1 3 0 B A R D
A L A R M P R E S S .
Note
: Alarm signal is kept latched for a period of 5 seconds.
3.5 Fast Detection of Sprinkler Opening
The
FLX-PC
®
unit is configured so that it can quickly detect
a vacuum sprinkler opening; this configuration is done via
the SW2 switch located inside the case. When this mode is
enabled, the letter [D] is displayed to the right of the first line.
This allows for a time of operation less than 5 seconds
between the vacuum sprinkler opening and the opening of
the deluge valve.
- 0 . 1 6 0 B A R D
A L A R M S P K
This operation is valid under the following conditions:
Sprinkler K Factor
Network Capacity
K5.6(80) to K<11.2(161)
2000 US gal (7.57m
3
)
K11.2(161) to K<25.2(363)
3000 US gal (11.4m
3
)
K25.2(363) and bigger
4000 US gal (15.1m
3
)
An alarm pressure signal is transmitted to the release control
panel when a variation of the vacuum corresponding to the
opening of a vacuum sprinkler is detected.
