FireFlex Systems Inc. ARC-1, Руководство по эксплуатации и техническому обслуживанию для владельца

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ICAF
- Integrated Compressed Air Foam System
System Trim Section
FM-0723-0-09 A
ICAF System with Electric Release
1. Description
The ICAF System utilizes a Viking Flow Control valve (B14)
to control water flow into system piping equipped with open
rotating spray nozzles. The system piping remains empty
until the Flow Control Valve is activated by operation of the
release system.
In fire condition, when the detection condition is satisfied the
ARC-1 Control Panel energizes the Solenoid Valve
(R2)
open, the pneumatic control line is then pressurized causing
the water, air and foam pneumatically activated control
valves
(A1, B9 & F1) to open simultaneously and generate
the CAF through a piping system into the discharge devices
and to be discharged over the area served by the discharge
devices.
2. Normal condition
Main Water Supply Control Valve (D1) should be CLOSED.
Priming valve (B1) must be CLOSED. Air supply must be
CLOSED (see AIR SUPPLY SECTION). Flow Test
Valve
(B6) and main drain valve (D3) must be CLOSED.
Alarm test valve (B5) must be CLOSED. Verify that the
Emergency Release valve (B10) is CLOSED. System
flushing valve (A3) and foam injector flushing valve (F5)
must both be CLOSED. All gauges (B11, B12 and E3)
should show 0 psi pressure.
Foam concentrate tank
(T1) must be filled according to the
procedure described in the FOAM SUPPLY section.
Compressed air cylinder bank (C2) must be pressurized
according to the procedure described in the AIR SUPLLY
section.
Under normal conditions, system water supply pressure
enters the priming chamber of the Flow Control Valve
(B14) through the priming line which includes a normally
open priming valve (B1) , strainer (B2) , restricted orifice
(B3) and spring loaded check valve (B4).
1.
System air supply pressurizes the normally closed air
pneumatically operated control valve (A1) , and the
normally closed foam pneumatically operated control
valve (F1) .
2. Water supply pressure is trapped in the priming
chamber by a spring loaded check valve (B4) and the
normally closed water pneumatically actuated control
valve Valve (B9). The pressure in the priming
chamber holds the Flow Control Valve (B14) clapper
closed, keeping the outlet chamber and system piping
dry.
3. System air supply pressurizes the normally closed air
pneumatically actuated control valve (A1) , the
normally closed foam pneumatically actuated control
valve (F1) and the normally closed Solenoid Valve
(R4) prevents the air to fill up the control lines, keeping
the system closed.
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