MENZL Multitest ND Bedienungsanleitung

MENZL

Atemschutztechnik

Our expertise, your safety –since 1975

Operator’s manual

Multitest ND

Atemschutztechnik MENZL GmbH

Absbergerstraße 9

3462 Absdorf

AUSTRIA

Tel.: +43 (0) 2278 / 2102-0

Fax: +43 (0) 2278 / 2102-21

E-mail: [email protected]

Web: www.menzl.at/en

Multitest ND 
Operator's manual 
 
 
 
-3-
Contents 
 
Operating and safety instructions............................................................................................................5 
General remarks..................................................................................................................................5 
Remarks on performing tests..............................................................................................................5 
Operating environment.......................................................................................................................5 
Malfunction and excessive strain........................................................................................................5 
Testing and maintenance ....................................................................................................................5 
Care and cleaning ...............................................................................................................................5 
Accessories.........................................................................................................................................6 
Specifications..........................................................................................................................................7 
Scope of delivery................................................................................................................................7 
Controls ..............................................................................................................................................8 
Introduction.............................................................................................................................................9 
The tester ............................................................................................................................................9 
Features of the tester...........................................................................................................................9 
Scope of possible tests........................................................................................................................9 
Performing tests....................................................................................................................................10 
Important note on performing tests...................................................................................................10 
Normal-pressure equipment..............................................................................................................10 
Lung-governed demand valve—leak-tightness without positive medium pressure.....................10 
Lung-governed demand valve—leak-tightness without negative medium pressure....................11 
Lung-governed demand valve—leak-tightness with medium pressure .......................................11 
Lung-governed demand valve—opening pressure.......................................................................12 
Mask—leak tightness...................................................................................................................12 
Positive-pressure equipment.............................................................................................................13 
Lung-governed demand valve—leak-tightness without positive medium pressure.....................13 
Lung-governed demand valve—leak-tightness with medium pressure .......................................13 
Lung-governed demand valve—closing pressure........................................................................14 
Mask—leak tightness...................................................................................................................14 
Mask—exhalation-valve opening pressure..................................................................................15 
Chemical protective suit...................................................................................................................15 
Preparing the suit for testing ........................................................................................................15 
Letting the suit pressure stabilize.................................................................................................15 
Chemical protective suit—valve testing ......................................................................................16 
The dummy head...................................................................................................................................17 
Inserting/replacing the battery ..............................................................................................................18 
Accessories ...........................................................................................................................................19 

Multitest ND

Operator's manual

-5-

Operating and safety instructions

General remarks

The health and lives of people may depend on this tester. All persons who make decisions

regarding its use, who operate, service and maintain it or who check whether it is fully

functional must thoroughly and carefully read, understand and follow the instructions in this

operator's manual. The tester has been tested and has left the factory with all features in

perfect working order.

The information provided in this manual is subject to change without notice. Errors and

omissions excepted.

Remarks on performing tests

Do NOT use thetester for performing tests on pieces of equipment other than those mentioned

in this manual. Never apply medium pressure to a lung-governed demand valve while it is

attached to the tester’s equipment connector. Otherwise, the low-pressure gauge and/or the

lung-governed demand valve may get damaged. For more information on how to test

equipment, please refer to the relevant sections of this manual.

Operating environment

Set the tester up in a dust-free location with as little fluctuations in ambient air temperature

and humidity as possible. Avoid direct exposure to sunlight because it may have a negative

impact on the tester’s accuracy.

Malfunction and excessive strain

Whenever it is likely that the tester is no longer safe for use, make it inoperative and secure it

against any unintentional operation. A service representative of the manufacturer, or a

similarly trained and authorized person, is to diagnose and remedy the cause of malfunction.

Testing and maintenance

The tester itself needs to be tested annually to ensure that it is fully functional and leak-tight

at all pressure levels. Only original replacement parts, fitted by authorized persons, may be

used for repairs. Every 6 years, the tester is to be serviced and recalibrated by the

manufacturer. If the tester gets used a lot, it is recommended that you have it serviced and

recalibrated annually. Where there is a conflict with national provisions and requirements, the

national provisions and requirements shall prevail.

Care and cleaning

Remove dust by carefully wiping the tester's housing with a soft cloth. To get rid of more

stubborn dirt, use a soft, damp cloth and a mild cleaning solution. Never use scourers,

alkaline/acidic detergents, scouring powder or volatile solvents such as alcohol, petroleum

spirits, dilutions or insecticides for cleaning.

Storage

Store the tester at around 20 °C in a dry location that is free from dust and dirt. Keep the tester

protected from direct sunlight. If you do not use the tester for several weeks in a row, you

should remove the battery for environmental and safety reasons.

Multitest ND

Operator's manual

-6-

Accessories

Verify you have received all accessories included in the scope of delivery.

Multitest ND

Operator's manual

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Specifications

Dimensions:

550 x 200 x 370 mm (w x h x d)

Medium-pressure compressed-air

connectors:

euro coupling

Power supply:

1.5V battery

Power adapter:

1.5V DC 1A

Weight:

10.00 kg

Gauge

Pressure range

Accuracy class

Low pressure

+/-20 mbar

1.6%

Scope of delivery

The scope of delivery includes:

•Multitest ND

•mask testing hose

•dummy head complete with filling valve

•adapters (may vary depending on the order placed)

•sealing plug for hose of lung-governed demand valve

•timer

•silicon spray

•1.5V battery (type D cell)

•operator's manual

Multitest ND

Operator's manual

-8-

Controls

low-pressure gauge

pump push-button

suction-pump lever

equipment connector

pressure-pump lever

battery compartment (on the side of the tester)

relief valve

jack for power adapter (1.5V)

dummy head

mask testing hose

push-button valve

30a

round thread to be attached to equipment

connector

relief valve for dummy head

30b

round thread to be attached to mask

clamp

Multitest ND

Operator's manual

-9-

Introduction

Constantly increasing demands with regard to the performance and operational safety of

respiratory protective equipment call for a sustained effort to continually optimize equipment

testers.

Combining pinpoint accuracy with utmost operator friendliness and a stylish design, the Menzl

“Multitest ND” tester meets all the requirements of state-of-the-art equipment testing.

The tester

The “Multitest ND” tester is suitable for testing respiratory protective masks and lung-governed

demand valves at low pressure. In its basic configuration, it can be used for performing tests

on pieces of normal-pressure equipment with round-thread connectors. Thanks to a wide

range of adapters (see accessories), it is also possible to test positive-pressure equipment as

well as different makes of chemical protective suits.

Features of the tester

One battery (type D cell) is required for operating the tester. A compressed-air supply is not

needed. Optionally, the tester can be powered via a 230V/1.5V mains adapter. The low

pressure for leak-tightness tests and functional tests is provided by the tester's built-in pump

and shown on the low-pressure gauge. Chemical protective suits get inflated via the filling

hose's push-button valve, which features a plug-in nipple that is compatible with the plug-in

safety coupling. The dummy head can be inflated with compressed air from either an SCBA

or a compressed-air supply line.

Scope of possible tests

- all leak-tightness tests, opening-pressure tests and closing-pressure tests

- all tests performed at low pressure

- all tests done with a suction pump or a pressure pump

Multitest ND

Operator's manual

-10 -

Performing tests

For the time intervals against which leak-tightness tests and functional tests are to be carried

out, refer tothe manual provided by the equipment manufacturer. Always perform tests against

the specifications found in the relevant equipment manual.

Important note on performing tests

Do NOT apply medium pressure to the lung-governed demand valve while it is attached to

the equipment connector.

Be sure to strictly adhere to the following sequence of steps in order to prevent the tester and the

lung-governed demand valve from being damaged:

- Detach the lung-governed demand valve from the equipment connector.

- Apply medium pressure to the lung-governed demand valve.

- Attach the pressurized lung-governed demand valve to the equipment connector.

Normal-pressure equipment

Lung-governed demand valve—leak-tightness without positive medium

pressure

Attach the lung-governed demand valve to the equipment

connector.

Seal the connecting nipple of the lung-governed demand valve.

Move the “pressure pump” lever to the “OPEN” position.

Press and hold the pump push-button.

Let the pressure build up until it is slightly higher than the level required

for testing and move the “pressure pump” lever to the “CLOSED”

position.

Release the pump push-button.

Release pressure via the relief valve until the level required for testing is

reached.

Perform the test against the specifications provided by the equipment

manufacturer.

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