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TMUIC1EZZ-P01 LEVEL 2
WING ICE PROTECTION SYSTEM COMPONENTS - WING ANTI-ICE CONTROL VALVE
EFFECTIVITY 30-11-00 Page 3
Aug 02/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 30 ICE & RAIN PROTECTION
UF94200
EFFECTIVITY Page 19
ALL
WING ICE PROTECTION SYSTEM COMPONENTS
WING ANTI-ICE CONTROL VALVE (HYMATIC)
CUT VIEW (VALVE CLOSED)
When the valve is de-energized, thus venting the
actuator assembly air supply, the actuator spring moves
the piston to the end of its travel, and the piston
and link assembly rotates the shaft and butterfly disc
to the closed position. Two microswitches signal that
the butterfly disc is in the closed position.
CUT VIEW (VALVE OPEN)
When the valve is energized, the air pressure is
applied to the controller housing and actuator body
assemblies. The action on the actuator causes the
piston and link assembly to rotate the shaft and
butterfly disc to an open position. The sensor
diaphragm, in the controller housing assembly, opens
the sensor valve against the sensor spring and upstream
pressure and allows upstream pressure to vent.
Stability of the sensor valve is maintained by an
orificed damper diaphragm in the damper housing
assembly. The resulting pressure changes the position
of the piston and thereby the shaft and butterfly disc
to maintain the specified airflow and pressure.
MANUAL LOCKING LEVER
In the event of an anti-ice valve failure, each valve
can be locked in the closed or the open position by
means of its mechanical locking/indicator lever.
TMUIC1EZZ-T02 LEVEL 2
EFFECTIVITY 30-11-00 Page 4
Aug 02/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 30 ICE & RAIN PROTECTION
UF94200
EFFECTIVITY Page 20
ALL
WING ICE PROTECTION SYSTEM COMPONENTS
WING ANTI-ICE CONTROL VALVE - CUT VIEW/MANUAL LOCKING LEVER
TMUIC1EZZ-P02 LEVEL 2
EFFECTIVITY 30-11-00 Page 5
Aug 02/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 30 ICE & RAIN PROTECTION
UF94200
EFFECTIVITY Page 21
ALL
WING ICE PROTECTION SYSTEM COMPONENTS
WING ANTI-ICE CONTROL VALVE (OPTIONAL)
This valve is basically installed on A321. It can be
optionally installed on A319 and A320.
IDENTIFICATION
FIN: (LH) 9DL, (RH) 10DL
LOCATION
ZONE: (LH) 522, (RH) 622
COMPONENT DESCRIPTION
The wing anti-ice control valve is an
electrically-controlled, pneumatically-operated
valve.
The valve has these primary components :
- an actuator assembly,
- a butterfly control,
- a pilot-valve assembly,
- a solenoid valve
- a valve position microswitch,
- two pressure switches,
- two ground test connections,
- a 40 micron filter.
The valve controls its outlet pressure at 22.5 psi
(1,55 bar).
If the pressure increases to 30 psi or decreases to
14 psi the related pressure switch gives a "high
pressure" or "low pressure" signal.
NOTE: If a failure of the electrical or air supply
occurs, the butterfly valve always closes.
TMUIC1EZZ-T03 LEVEL 2
EFFECTIVITY 30-11-00 Page 6
Aug 02/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 30 ICE & RAIN PROTECTION
UF94200
EFFECTIVITY Page 22
ALL
WING ICE PROTECTION SYSTEM COMPONENTS - WING ANTI-ICE CONTROL VALVE (OPTIONAL)
TMUIC1EZZ-P03 LEVEL 2
EFFECTIVITY 30-11-00 Page 7
Aug 02/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 30 ICE & RAIN PROTECTION
UF94200
EFFECTIVITY Page 23
ALL
WING ICE PROTECTION SYSTEM COMPONENTS
WING ANTI-ICE CONTROL VALVE (GRIMES)
CUT VIEW
When the solenoid valve is energized, the poppet moves
and connects the top chamber of the actuator to the
atmosphere.
In the middle chamber, bleed air pressure from the
upstream side of the butterfly causes the actuator rod
to move up and open the butterfly valve.
When downstream pressure becomes higher than the force
of the main spring of the pilot valve, the needle valve
moves, thus middle and top chamber are interconnected,
closing the valve.
MANUAL LOCKING LEVER
Two manual devices can lock the valve in the open or
closed position.
One device has a locking screw and a lever.
The other device is a plate with a slot.
Each device has an indicator to show that the valve
is in the open or closed position.
TMUIC1EZZ-T04 LEVEL 2
　
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