Ansell Alphatec K72 141 100 User manual

Instructions for Use
AlphaTec®Combined Regulating Valve &
Airline Passthrough MkII
Suit
Ventilation

CONTENTS
1. Safety considerations.............................................................................. 3
1.1 Denitions of signal icons used in the instructions.......................... 3
2. Description.................................................................................................... 4
2.1 Components.............................................................................................................. 4
2.2 Ventilation ow rate adjustment ................................................................ 5
3. Approvals ....................................................................................................... 6
4. Pre-use ............................................................................................................. 6
5. In use................................................................................................................. 7
5.1 Connecting to SCBA............................................................................................. 7
5.2 Connecting to external air supply............................................................... 7
5.3 Selecting suit ventilation air ow................................................................ 7
6. Storage............................................................................................................. 8
7. Maintenance ................................................................................................ 8
7.1 General ........................................................................................................................ 8
7.2 Regular service ....................................................................................................... 8
7.2.1 Service instructions.............................................................................................................. 9
8. Technical Data..........................................................................................11
8.1 Materials...................................................................................................................11
8.2 Performance...........................................................................................................12
8.3 Spare part list.........................................................................................................12

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1. Safety considerations
• These instructions for use (IFU) are valid only for AlphaTec® Combined Regulating
Valve & Airline Passthrough MkII*.
• Do not use a damaged or incomplete valve, and do not modify the valve.
• For maintenance, only use genuine AlphaTec® (TRELLCHEM®) service-kit, or the function
may be impaired.
1.1 Denitions of signal icons used in the instructions
The following icons are used in this IFU to highlight the user on situations or actions that
need special attention not to risk the safety of user, suit or environment.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, could result in
physical injury, or damage to product or environment.
NOTICE
Indicates additional information on how to use the suit.
* Formerly known as TRELLCHEM® Combined Regulating valve & Airline Passthrough MkII.

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2. Description
The AlphaTec® Combined Regulating Valve & Airline Passthrough MkII:
• Is intended for use/mounting in an encapsulating gas-tight chemical protective suit.
• Provides suit ventilation for increased safety and comfort.
• Provides the possibility to use an external air supply for both suit ventilation and
breathing air.
• Is available with different connection outside (to external air source) and inside (to SCBA),
to t different SCBA brands.
2.1 Components
The main parts of the valve are described below:
1) Valve housing with regulating thumb wheel
2) Inlet air, connection* to external air supply source i.e. airline (with protective cap)
3) Inlet air, connection hose** to the SCBA (with protective cap)
4) Adjustable waist belt
*Standard connection is CEJN 341 male. Other options are available
**Standard connection is a hybrid CEJN 344/345 female that ts both CEJN 344 male and
CEJN 345 male. Other options are available.
2
4
1
3

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2.2 Ventilation ow rate adjustment
The suit ventilation air ow is adjusted by rotating the thumb wheel to one of the four
marked positions (see sketch below):
0 litres/minute
2 litres/minute
30 litres/minute
100 litres/minute
For safety reasons, using 0 or 100 litres/minute requires a two-hand grip:
Pull the locking device (2) while rotating the thumb wheel (1) with your other hand
to the desired position.
100 litres/minute shall only be used when connected to an external air source
i.e. airline. If used with SCBA air cylinders only, you may empty them too fast
and risk running out of breathing air.
1) Thumb wheel for selecting suit ventilation air ow rate.
2) Locking device with ow indication.
1
2

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3. Approvals
AlphaTec® Combined Regulating Valve & Airline Passthrough MkII is tested and approved
according to EN 943-1 and EN 943-2, as part of AlphaTec® gas-tight suits.
The internal breathing hose fulls EN 14593 and EN 14594 standards for “Compressed
airline breathing devices”.
4. Pre-use
• Check that the valve is rmly attached to the suit and the inside tubing is tted
to the valve.
• Check that the connections are clean and undamaged.
• If using external air supply/airline:
- Check that the compressed air supply hose meets EN 14593 or EN 14594.
- Check that the external air supply fulls the requirements for breathing air according to
EN 12021.
- Check that the external air supply has correct and sufcient air pressure:
- Maximum inlet air pressure is 10 bars.
- Minimum inlet air pressure 5.5 bar. NOTE: This applies only if used with airline.
The breathing air ow cannot be guaranteed if the pressure falls below 5.5 bar.
NOTE: This applies only if used with airline.
Never rotate a non-pressurised valve (without an airline connected and
no air being supplied) when mounted on the suit, as it may come loose.
A pressurised suit valve (with an airline connected and air being supplied)
can be rotated freely in the suit.

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5. In use
5.1 Connecting to SCBA
1) Take off the protective cap on the inside of the suit.
2) Connect the SCBA:
a) On the T-piece on the SCBA
b) On the Y-piece on the SCBA
c) On the extra connection on the cylinder
NOTE: Different SCBAs have different connection types/conguration.
5.2 Connecting to external air supply
1) Take off the protective cap on the outside of the suit.
2) Connect the external airline hose and make sure it is property attached.
5.3 Selecting suit ventilation air ow
• 2 litres/minute: The standard ventilation rate, which gives an overpressure in the suit and
thereby helps prevent chemicals from coming into the suit in case of a puncture.
• 30 litres/minute: When the air inside the suit gets moist and warm, the user can choose
to temporarily adjust the ventilation rate to 30 litres/minute while at the same time
compressing the suit (e.g. by hugging & squatting the suit). This exercise empties the suit
of moist and warm air, which will help provide a slightly more comfortable environment
inside the suit.
• 100 litres/minute: Increases the comfort for the user, but shall be used only if the suit is
connected to external air supply/airline.
Never use 100 litres/minute ventilation rate if only the SCBA cylinder is used, as
this will empty the air quickly, leaving the user without breathing air and risk of
suffocation.

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6. Storage
• Store in room temperature and in a dry environment.
• When stored, make sure the protective caps are tted, to prevent dirt and moist from
getting into the connections.
7. Maintenance
7.1 General
• Handle the valve with care.
• Use the protective cap whenever the valve is not connected to SCBA or airline.
• Protect the connections from damage and dirt.
• If the suit valve has been damaged or the connections are broken, it must be sent off for
repair.
Never try to repair a broken valve yourself.
7.2 Regular service
It is recommended to service the valve every 5 years. A service-kit is available (see
instructions, chapter 7.2.1).

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Procedure:
1) Remove the Valve from the chemical
protective suit by unscrewing the Centre
screw.
2) Once removed, you should have four
parts. From left in the picture below:
Valve body, Rubber gasket, Distribution
house and Centre screw.
3) Service-kit contents:
2
A B C D
E
F
3
4) Valve body: Carefully remove O-rings
“A” and “B”. Do not scratch the metal
surface! Replace with the new O-rings.
5) Centre screw: Remove O-rings “C” and
“D”. If you use a pair of tweezers, be very
careful not to scratch the metal surface!
A
B
4
C
D
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7.2.1 Service instructions
Component Article no
Service-kit for Regulating valve & Passthrough MkII K72 141 100 (1 pce)
K72 141 101 (10 pcs)
Tools
Torque wrench/screwdriver with Allen key, 5 mm Not available from Ansell
Tweezers

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6) Use the O-ring tool (F) to carefully put
the new O-ring “C” in place.
7) Scrap the old Rubber gasket “E” and
replace with the new one.
8) Mount the valve into the suit again.
Tighten the Centre screw with max.
torque 4 Nm.
The suit must be pressure tested
before it is used again.
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