Siemens Kion MultiGas 2000 Service manual

KION MultiGas 2000

Service Manual

E382 E392E 061 10 02 02

KION MultiGas 2000	Service Manual

Notes

Siemens-Elema AB

E382 E392E 061 10 02 02

Service Manual KION MultiGas 2000

Contents

1.	Important .............................................................................................................................		4
2.	Introduction ..........................................................................................................................		6
	2.1	General description ......................................................................................................	6
	2.2	Mechanical overview ...................................................................................................	7
	2.3	Functional principles ....................................................................................................	8
3.	Description of functions .......................................................................................................		9
	3.1	Water trap ....................................................................................................................	9
	3.2	Water trap receptacle...................................................................................................	9
	3.3	Nafion tube.................................................................................................................	10
	3.4	AION ..........................................................................................................................	10
	3.5	O2 sensor ...................................................................................................................	12
	3.6	SCM300 PC board .....................................................................................................	13
	3.7	Rear panel ..................................................................................................................	13
4.	Disassembly and assembly ...............................................................................................		14
	4.1	General .......................................................................................................................	14
	4.2	Handling PC boards ....................................................................................................	14
	4.3	Tools ...........................................................................................................................	14
	4.4	Water trap receptacle on KMG 2000 .........................................................................	15
	4.5	Removal and installation of KMG 2000 in KION ........................................................	16
	4.6	Cover ..........................................................................................................................	17
	4.7	Internal tubing ............................................................................................................	18
	4.8	O2 sensor ...................................................................................................................	19
	4.9	AION ..........................................................................................................................	20
	4.10 SCM300 PC board with connectors ..........................................................................		21
5.	Service procedures ............................................................................................................		22
	5.1	Functional verification ................................................................................................	22
	5.2	Software installation...................................................................................................	22
	5.3	Calibrations and verifications .....................................................................................	24
	5.4	KMG 2000 Service Software .....................................................................................	27
6.	Troubleshooting .................................................................................................................		28
	6.1	General .......................................................................................................................	28
	6.2	Problem indentification ..............................................................................................	28
	6.3	Prior to troubleshooting..............................................................................................	28
	6.4	Communication ..........................................................................................................	28
	6.5	Inaccurate information ...............................................................................................	29
7.	Preventive maintenance ....................................................................................................		29
	7.1	Performing the Preventive maintenance ...................................................................	29
8.	Diagrams ............................................................................................................................		31
	8.1	Functional block diagram ...........................................................................................	31

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KION MultiGas 2000	Service Manual

1. Important

General

•This Service Manual is intended to give service personnel sufficient knowledge about the KION MultiGas 2000 (KMG 2000) to be able to diagnose any possible problem or failure and to identify which part or component that causes the problem or failure. The description is limited to a level, which allows the service personnel to track problems down to parts that are found in the spare part list.

•This Service Manual is also intended to give information how to perform preventive maintenance and to make functional checks and calibrations.

•Documentation for the KMG 2000 consists of:

–SC 7000 / SC 9000XL – User’s guide

–KION – Operating Manual

–KION – Service Manual

–KION MultiGas 2000 – Service Manual

–KION MultiGas 2000 – Installation Instructions

–KION MultiGas 2000 – Spare Parts List

•The SC 7000 / SC 9000XL – User’s guide and the KION – Operating Manual are indispensable complements to the Service Manual for proper servicing.

Text inside a box is used to highlight important information.

•In addition to the Important information given here and in the related documents, always pay attention to applicable local and national regulations.

•Responsibility for the safe functioning of the equipment reverts to the owner or user in all cases in which service or repair has been done by a non-professional or by persons who are not employed by or authorized by Siemens, and when the equipment is used for other than its intended purpose.

•Data on internal pressures are given in Pa (bar). Airway pressures are given in cm H2O (Pa).

1 hPa = 1 mbar	1 mbar = 1 hPa
1 kPa = 10 mbar	1 mbar = 0.1 kPa
1 kPa = 0.01 bar	1 bar = 100 kPa
1 kPa + 10 cm H2O	1 cm H2O + 0.1 kPa
1 kPa + 0.01 at	1 at + 100 kPa
1 kPa + 0.01 kgf/cm2	1 kgf/cm2 + 100 kPa
1 kPa + 0.01 kp/cm2	1 kp/cm2 + 100 kPa
1 kPa + 0.145 psi	1 psi + 6.9 kPa

Symbols used in this manual

•ESD sensitive components – Make sure to take precautions to avoid

damaging ESD sensitive components.

• Special waste – Make sure to discard disposables and replaced parts according to local regulations and in an environmentally acceptable way.

• Technical training – Refers to the Technical training supplied by Siemens.

•Service contract – Refers to the Service contract supplied by Siemens.

Abbreviations used in this manual

•KMG 2000 – KION MultiGas 2000.

•KION Display – Siemens Patient Care Monitors, e. g. SC 7000 or SC 9000XL.

Installation

• Only personnel trained and authorized by Siemens shall be permitted to install the KMG 2000. The installation and handing-over procedures are described in the KION MultiGas 2000 – Installation Instructions.

Functional check

•After any installation, maintenance or service intervention in the KMG 2000, perform a ”Functional verification”. Refer to chapter Service procedures, section Functional verification in this Service Manual.

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Service Manual	KION MultiGas 2000

1. Important

Hazard notices

•Before disassembling or assembling the KION and/or the KMG 2000, make sure that the:

–Gas supply is disconnected.

–Mains power cable is disconnected.

–KION power switch is set to Off. If the power switch is set to Standby or On, the internal battery will supply power to the PC boards.

–Internal battery is disconnected when working inside the Power & Communication interface.

–The system is cleaned according to instructions in the KION – Operating Manual, chapter Routine cleaning.

•With power supply connected to the KION System, there are energized electrical components inside the unit. All personnel must exercise extreme caution if fault tracing or adjustments are performed with power supply connected.

Warnings

•The KMG 2000 must not be used with flammable anesthetic agents.

•Water emptied from the water trap

should be disposed of in accordance with local regulations for contaminated and biologically hazardous fluids.

•The water trap should be disposed of in accordance with local regulations for contaminated and biologically hazardous items.

•The evacuated gas must be handled in a suitable manner to prevent hazardous levels of anesthetic gases to be built-up in the ambient air.

•Analyzer performance is likely to be degraded in the presence of operating electrosurgical or diathermy equipment.

Service

• The KMG 2000 must be serviced at regular intervals by personnel trained and authorized by Siemens.

Any maintenance or service must be noted in a log book.

•Preventive maintenance must be performed at least once every year as long as the unit is not used more than normal. Normal operation is estimated to correspond to approx. 5.000 hours of operation. Details are found in this Service Manual, chapter ”Preventive maintenance”.

•It is recommended that maintenance and service is done as a part of a service contract with Siemens.

• All disposable parts shall be discarded according to local regulations and in an environmentally acceptable way.

• When working with ESD sensitive components, always use a grounded wrist band and a grounded work surface. Adequate service tools must always be used.

To the responsible service personnel

•The contents of this document are not binding. If any significant difference is found between the product and this document, please contact Siemens for further information.

•We reserve the right to modify products without amending this document or advising the user.

• Only personnel trained and authorized by Siemens shall be permitted to perform installation, service or maintenance of the KION and/or the KMG 2000. Only Siemens genuine spare parts must be used. PC boards (spare parts) must always be kept in a package for sensitive electronic devices. Siemens will not otherwise assume responsibility for the materials used, the work performed or any possible consequences of same.

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Siemens Kion MultiGas 2000 Service manual

KION MultiGas 2000	Service Manual

2. Introduction

KION

Display

		KION
			as 2000
M	u	lti	G
	u	lti

MGA-001X

2.1 General description

The KION MultiGas 2000 (KMG 2000) is intended for integration in the KION Anesthesia System.

The KMG 2000 delivers gas measurement data to be shown on the KION Display.

The KMG 2000 is a side-stream multigas analyzer intended to monitor respiratory and anesthetic gases sampled from the breathing circuits of adult, pediatric and neonatal patients. The gases measured are O2, CO2, N2O, Halothane, Enflurane, Isoflurane, Sevoflurane and Desflurane in any combination.

All gases in the gas sample, except O2, are identified and measured by an infrared sensor. O2 is identified and measured by a paramagnetic O2 sensor.

The information created by the KMG 2000 is delivered to the KION Display where the information is calculated and shown.

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Service Manual	KION MultiGas 2000

2.2 Mechanical overview

2.2.1 Water trap

The DRYLINE™ water trap consists of two parts, a filter housing with hydrophobic anti-bacterial filter and a container for separated waste.

2.2.2 Water trap receptacle

The water trap is connected to the water trap receptacle. Switches on the water trap receptacle detects that a water trap is connected. The sample gas flow is routed from the water trap receptacle to the KMG 2000 via a NafionTM tube.

2.2.3 AION

The AION™ is the gas measuring unit. It contains the following modules:

•Pneumatic Module: Interconnection between the different parts of the gas sampling system. Includes two solenoid valves; the zero calibration valve (ZCV) and the purge flow valve (PFV).

•Gas Measurement Bench (GMB): Identifies and

measures the gases CO2, N2O, Halothane, Enflurane, Isoflurane, Desflurane and Sevoflurane.

•Pump Module: Creates and controls the gas sampling flow.

•AION PC board: Integrated in the AION base module. Contains CPU, EEPROM and software. Controls the gas sampling system and performs calculations from the measured parameters.

2.2.4 O2 sensor

The paramagnetic O2 sensor identifies and measures the O2 concentration in the gas sample.

2.2.5 SCM300 PC board

The SCM300 PC board is an interconnection between modules within the KMG 2000 and includes also all external electrical connectors. The RS232 protocol converters are located on this PC board.

A metal shield covering the external connectors mounted on the SCM300 PC board protects the interior from electromagnetic interference from the outside.

2.2.6 Rear panel

The evacuation outlet connector and all external electrical connectors are mounted on the rear panel.

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KION MultiGas 2000	Service Manual

2.3 Functional principles

This description refers to the functional block diagram, see chapter Diagrams.

2.3.1 Gas sampling system

The KMG 2000 samples a continuous gas flow from the patient breathing circuit to measure concentrations and to identify gases in the breathing gas. A gas pump creates and controls the gas flow through the sampling system.

From the gas sampling line, the gas enters the water trap where water droplets and secretions are separated from the flow and collected in the water trap container.

In the water trap, the gas flow is divided in two parts:

•The sampling gas flow, approx. 90% of the total gas flow.

•The purge gas flow, approx. 10% of the total flow.

Both gas flows passes a filter inside the water trap. This filter protects the sampling system from condensed water, secretions, bacteria and other kind of contamination.

The sampling gas flow passes:

•The Nafion tube where the moisture content and the temperature in the sampled gas are equalized to that of the ambient air.

•The Zero Calibration Valve (ZCV). Zero calibrations are performed automatically at regular intervals.

•The Gas Measurement Bench (GMB). The CO2, N2O and anesthetic agents are identified and measured in the Gas Measurement Bench (GMB).

•The O2 Sensor where the O2 content is identified and measured.

The purge gas flow passes:

•The Purge Flow Valve (PFV). The PFV automatically flushes the sampling system if the sampling gas flow is obstructed.

Both gas flows are now mixed and connected to the pump. After passing the pump, the gas flow is routed back to the patient breathing circuit via the evacuation outlet.

2.3.2 Data communication

Analog signals from the GMB and the O2 sensor are converted to digital signals by the AION CPU. This digital information is delivered to the KION Display via the Protocol Converter (PrC).

2.3.3 Control system

The pump and thus the gas sampling flow rate is controlled by information from the water trap receptacle. Switches in the water trap receptacle identifies if a water trap is connected.

Calibration information is stored separately in EEPROMs in the GMB, in the pump and in the AION PC board.

Software upgrades/updates of the AION-SW and the PrC-SW, can be performed via a PC connected to P1. The switches SW1 and SW2 selects the flash memory to be upgraded/updated.

The 24 V DC power is supplied via connector P2 from the KION power supply. Both the SCM300 PC board and the AION PC board has separate DC/DC converters and 5 V stabilizers.

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Service Manual	KION MultiGas 2000

3. Description of functions

This description in this chapter also refers to the functional block diagram, see chapter Diagrams.

10%

90%

	ample
Gas	s
Gas

MGA-005X

Purge inlet Sample inlet

	Upper
	switch
	Lower
	switch
-006X	Flat cable	PC board
MGA	Flat cable	PC board
MGA

3.1 Water trap

The DRYLINE™ water trap protects the gas analyzer system from condensed water, secretions, bacterial contamination and dust. It consists of two parts, a filter housing with hydrophobic anti-bacterial filter and a container for separated waste.

The filter housing has one gas sample inlet to be connected to the sampling tube.

In the water trap, the sampling flow is divided in two parts:

•Sampling gas flow (approx. 90%).

•Purge gas flow (approx. 10%).

There are two outlets in the filter housing, one for each gas flow.

The DRYLINE water trap to be used with the KMG 2000 is designed for a sampling flow of 120–

200 ml/min. For further information, see Water trap receptacle below.

3.2 Water trap receptacle

The water trap is connected to the water trap receptacle. There are two gas connections on the receptacle; one for the sampling gas flow and one for the purge gas flow.

The two electrical switches on the water trap receptacle detects if a water trap is present and identifies the version of the connected water trap. The water trap receptacle is designed to identify two different water trap versions:

•The high-flow water trap. This version of the water trap is to be used with the KMG 2000. The water trap activates both switches. The sampling flow is by default set to 200 ml/min, but can be changed to 120 ml/min via the KION Display, refer to the User's manual.

•The low-flow water trap. This version of the water trap is not used in this application. It activates only the lower switch. This low-flow water trap is intended to be used in applications where the sampling gas is not routed back to the patient circuit.

If no water trap is connected or if a water trap without container is connected, both switches are inactive. The pump, and thus the gas flow through the KMG 2000, is automatically stopped to prevent contamination.

The control signal cable from the water trap receptacle PC board is connected to the SCM300 PC board via connector P4a.

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KION MultiGas 2000	Service Manual

3.3 Nafion tube

The NafionTM tube equalizes the moisture content and the temperature in the sampled gas to that of the ambient air. This is to reduce the influence on the measurements from humidity and to prevent from water condensation inside the sampling system.

Pneumatic			Gas Measurement	Pump
Module			Bench	Module
	.
Art	.Nr
	.
	.Nr
Ser
			A
		M
		E
	RT
A

Base Module including AION PC board

MGA-007X

The KMG 2000 Service Software is required to:

•Perform an O2 sensor calibration if the O2 sensor and/or the AION has been replaced.

•Update the configuration stored in the AION EEPROM if the AION unit has been replaced. This is done to secure traceability and to allow correct revision number to be shown on the

KION Display.

3.4 AION

The AION is the gas measuring unit. It is a complete unit and must not be disassembled. The following modules are included in the AION:

•Pneumatic Module

•Gas Measurement Bench

•Pump Module

•Base Module including AION PC board

3.4.1 Pneumatic Module

The pneumatic module interconnects the pump, the gas measurement bench and the O2 sensor. There are two solenoid valves in the pneumatic module; the zero calibration valve and the purge flow valve.

Zero Calibration Valve (ZCV): To establish a gas zero concentration reference, ambient air is routed through the Gas Measurement Bench via the Zero Calibration Valve.

The automatic zero calibration of the AION will be performed:

•During warm-up

•At a temperature change >1 °C (in the GMB)

•Every 4 hours

•At gas span calibration.

Purge Flow Valve (PFV): During normal sampling condition there is always a small purge flow, approx. 10% of the total flow, through the KMG 2000. This purge flow is created by the purge flow restrictor.

If there is an obstruction in the sampling line, this will be detected by the flow sensor in the pump as a decreased flow.

If the total flow from the two water trap outlets drops below 40 ml/min for more than one second, the forced purge flow-function is activated during 12 seconds. This forced purge flow is created by the Purge Flow Valve connected in parallell with the purge flow restrictor. The forced purge flow forces water and secretions in the sampling line into the water trap container. The forced purge flow is routed from the water trap directly to the pump and out through the evacuation outlet. It will not pass the Gas Measurement Bench or the O2 Sensor.

If the total flow remains below the limit value, the forced purge flow-function will be repeated up to four times until further forced purge cycles are inhibited. The purge function is automatic and is not possible to start manually.

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