Heyer AGS 80 D Manuel utilisateur

Instructions for Use

Switch Unit

AGS 80 D

Variant A

Instruction for use • Switch unit AGS 80 D

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Please note !!!

The notes and technical details mentioned in this documentation /

these instructions for installation reflect the status at the time of printing.

Due to permanent development efforts for our products,

we reserve the right to constructional modifications

at any time.

For this reason and depending on the state of construction and development,

the illustrations of this documentation

may deviate from the actual appearance of the product.

But this fact does not have any influence on the functional correctness

of the notes and operational sequences.

Heyer Aerotech GmbH

Nieverner Straße 30

D-56132 Nievern

Phone: +49 (0)2603 / 2004

Fax: +49 (0)2603 / 4020

E-Mail: office@heyer-aerotech.de

Instruction for use • Switch unit AGS 80 D

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Table of Contents Page

1. Manufacturer’s Data .......................................................................................4

2. Introduction .....................................................................................................5

3. Putting into Operation.....................................................................................6

4. Settings .............................................................................................................6

5. Functional and Operational Principles ..........................................................7

5.1. Pneumatic components ................................................................................................ 7

5.1.1 Illustration ................................................................................................................ 8

5.2. AGS D Monitor ........................................................................................................... 9

5.2.1 Functionality............................................................................................................. 9

5.2.1.1 General information ............................................................................................... 9

5.2.1.2 Emergency power supply ..................................................................................... 10

5.2.1.3 Pressure monitoring ............................................................................................. 10

5.2.1.4 Switching............................................................................................................. 11

5.2.1.5 Issuing alarms ...................................................................................................... 11

5.2.1.6 Logging ............................................................................................................... 11

5.3 Electrical connections ..................................................................................................12

5.4 Service Menu...............................................................................................................14

7. Technical Details............................................................................................19

8 Design Variants...............................................................................................20

10. Warranty......................................................................................................23

11. Technical Documentation............................................................................ 24

Instruction for use • Switch unit AGS 80 D

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1. Manufacturer’s Data

Product:

AGS 80 D

Manufacturer and Sales Office

Heyer Aerotech GmbH

Nieverner Straße 30

D-56132 Nievern

Tel.: +49 (0) 26 03 / 20 04

Fax.: +49 (0) 26 03 / 40 20

E-Mail: office@heyer-aerotech.de

Instruction for use • Switch unit AGS 80 D

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2. Introduction

Dear customer!

Thank you for choosing a HEYER Aerotech product.

HEYER Aerotech appliances are state-of-the-art technology and manufactured according to

extremely strict quality standards.

You have purchased a highly professional and long-lasting product which is easy to maintain. It

is based on the experience of decades and the know-how of powerful medical technology.

The switch unit AGS 80 D complies with all the standards and guidelines currently applicable for

the production and operation of the equipment.

If, nonetheless, you should find a reason for complaint please do not hesitate to contact our

customer service department at any time.

Before putting the equipment into operation for the first time, please carefully

read these instructions for use and pay special attention to the notes which

have been marked additionally.

Instruction for use • Switch unit AGS 80 D

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3. Putting into Operation

Use the patented screw joints of the curved tube on both sides of the cylinder rack to connect the

gas cylinders. Tighten the screws with your hands. Please do not use any pliers, because the

tightness will be achieved by the cylinder pressure.

Close all the high-pressure cut-off intervalves and ventilation valves of the high-pressure

manifold.

Now you can open the cylinder valves to test if all the connections are tight.

After that you can open the high-pressure intervalves. The pressure of the cylinder on the right

and on the left is displayed on the corresponding pressure gauges.

Please note !!

Cylinder valves and high-pressure intervalves always have to be opened very slowly.

BE CAREFUL – DANGER OF EXPLOSION!

When connecting oxygen please observe the applicable accident prevention

regulations for oxygen. Free from oil and grease.

No open light or fire.

4. Settings

The reduction valves installed in the switch unit have been set at the factory.

The high-pressure reduction valves (⇒Illustr. 2 →8) have been set to appr. 12 bar. This setting

is displayed on the corresponding pressure gauge.

The high-pressure reduction valves (⇒Illustr. 2 →8) are equipped with safety valves which

have been set to appr. 16 bar.

The constant pressure reducer (⇒Illustr. 2 →2) has been set to 5 bar. This setting is also

displayed at the corresponding pressure gauge.

For the operation of the switch unit only 1 mains pressure reducer is necessary.

The second redundant mains pressure reducer has to be kept closed and is only used during

service works at the first mains pressure reducer.

When you open the mains cut-off valves (⇒Illustr. 2 →5) the pressure developing in the piping

system will be displayed on the instruments (⇒Illustr. 2 →6).

When you open one side of the mains cut-off valves (⇒Illustr. 2 →5) the corresponding

pressure in the piping system will be displayed on the instruments (⇒Illustr. 2 →6).

appr. 12 bar

5 bar

appr. 5 bar

Liquid gas vaporizer min. 15 bar

Instruction for use • Switch unit AGS 80 D

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5. Functional and Operational Principles

5.1. Pneumatic components

The HEYER AEROTECH switch unit AGS 80 D is a device which is capable of switching

between a liquid gas vaporizer or two cylinder racks by means of adjustable pressure limits.

The functions „Reserve 1“ or „Reserve 2“ can be assigned individually to these two cylinder

racks.

The device can also be operated without a liquid gas vaporizer.

All the pressures displayed are monitored on the basis of their individual alarm thresholds.

This is why the HEYER AEROTECH switch unit AGS 80 D is able to ensure a permanent

supply of medical gas with the types of gas at its disposal.

Instruction for use • Switch unit AGS 80 D

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5.1.1 Illustration

Illustr. 2 Switch unit AGS 80 D

Model O2Article No.: 538-3100

Legend:

Magnetic valve

High pressure reducer

Constant pressure reducer, mains

pressure ¾“

Sensor high pressure

Connection 3rd source of supply

Emergency supply

One-way valves

Mains connection

Cut-off valve ¾“

Relief line

Sensor mains pressure

Sensor medium pressure / system

pressure

Safety valve 6 bar

Instruction for use • Switch unit AGS 80 D

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5.2. AGS D Monitor

5.2.1 Functionality

5.2.1.1 General information

The control unit AGS-D is used for automatic switching in a gas switching unit for medical gas

supply. The mains pressure is kept by automatic switching between a main source and two

auxiliary sources. The control unit makes sure that the corresponding gas is permanently

supplied. Pressures of the main source and of the auxiliary sources as well as system and mains

pressures are constantly monitored. Channel control is carried out by pressure transmitters (4-

20mA).

Each pressure has been assigned to a (multi-coloured) LED. These LEDs either show the normal

condition (green) or a state of alarm (yellow or red for mains pressure). The QUIT key allows the

user to suppress the acoustic alarm. With an alarm of the mains pressure, the acoustic signal is

repeated after 12 minutes.

The LCD displays the sources, the alarm thresholds and the current pressure. In addition, the

sequence of sources, which is relevant for switching, is displayed in Roman numerals. The

currently active source is shown by inverting the source designation. In the lower area, the state

of the corresponding pressure is displayed in text form (i.e. OK, HIGH, LOW).

Instruction for use • Switch unit AGS 80 D

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The following 5 keys are on the user interface:

a) ON/OFF key

b) QUIT key

c) UP and DOWN keys

d) ENTER key

Pressing the ON/OFF key for some time will turn the unit on or off. The QUIT key can be used

to suppress the acoustic signal. For navigating in the service menu use the UP and DOWN keys

and the ENTER key.

On the user interface there are 3 additional LEDs (Battery, Controller, Info).

The LED for Battery is green when the state of the batteries is ok. The Battery LED is red when

the battery is faulty or when it has not been connected. The LED for Controller is green when the

micro-controller system has not found any failures during its regular self-test, otherwise it is red.

The LED for Info flashes green when the cache contains messages.

5.2.1.2 Emergency power supply

When the main power supply via transformer unit fails one battery will backup the power

supply of the control unit. The electronic elements will stay in operation for appr. 2 more hours.

During this time the backlights of the LCDs will be turned off. At the push of a button, the

backlights will be activated for 15 seconds. The switching valves and the signal relays will be

turned off as well.

5.2.1.3 Pressure monitoring

The channels in use are monitored on the basis of an upper and a lower alarm threshold. In case of

an error, the corresponding LED will shine red or yellow and the status in the LCD will flash. In

addition, an acoustic alarm will be activated. When pressing the QUIT key, the acoustic alarm

will be suppressed and both the source and the LED will flash. With an alarm of the mains

pressure, the suppression will be overridden after 12 minutes.

Pressure monitoring of the sources left and right has a hysteresis of 2bar at the lower alarm

threshold. That means, pressure must exceed the lower alarm threshold by 2bar upwards before

pressure for the control unit is accepted as OK by the system.

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