E.M.E. M672B, M672P User manual

Mk II Infant FlowTM

Driver

Models M672B and M672P

Software Versions: V1.22 and all V2.x.x

Ref.:

Service

672-81

Issue

Service

Manual

2001

Manual

-01

-24

Section Content

Issue

Page Cover page Table of Contents

1 About this Manual

Product Specification Performance Verification Procedure

4 Routine Maintenance 5 Electrical and Electronic description

Electronic Calibration Procedure Mechanical description

AppendixA Circuit & Layout Diagrams Appendix B Mechanical Drawings

Appendix Appendix

Information on oxygen fuel cells

Spare Parts Lists

3 3 3 3

3 3 3

3 3 3 3

Appendix E Warranty

E.M.E. (Electro Medical Equipment) Ltd. 60 Gladstone Place, Brighton, Tel.:+44 (0)

1273

6451 00, Fax.:+44 (0)

BN2 3QD,

1273

6451 01

Email: info@eme-med.co.uk, Internet: www.eme-med.co.uk

E.M.E. (Electro Medical ~qui~ment) Limited. Copyright Notice. No part of this document may be photocopied or otherwise reproduced

without the prior permission in writing

E.M.E. (Electro Medical Equipment) Limited except as permitted by copyright law.

The

Infant

FlowTM System

About

To assist the engineer and technician this manual provides detailed descriptions of the major components of

N1672B and R11672P versions of the lnfant FlowTM Driver from serial number 2000 up. For Drivers with

the serial numbers repair or re-calibration of these products fully familiarise themselves with the clinical aspects and usage of the lnfant FlowTM System as this will assist in front line troubleshooting and service. This manual must be

used in conjunction with the Operating Manual document numbers 672-830 (English, Arabic, Dutch, French

and German), 672-831 (English, Danish, Finnish, Norwegian and Swedish), 672-832 (English, Greek,

Portuguese, Spanish and Italian) or 672-833 (English, Chinese, Japanese and Turkish). Routine maintenance, service or repair of the EME Infant FlowTM Driver as defined in this manual should only

be undertaken by competent qualified individuals trained in the calibration, service and repair of devices of

this nature and who have access to the special tools and equipment that are required. Alternatively contact

EME or an authorised distributorto ensure full reliability and safety of the product.

below2000, refer to document M672SM. We suggest that all personnel involved in the service,

this

Manual

Defective Medical Equipment) Ltd..

The manual comprises several discreet sections, which deal with the major sub-assemblies in order. This

allows work to be undertaken in a logical and methodical manner on one section of the product without

disturbing other parts. However, we recommend that the complete performance and verification procedure

be carried out after any work has been carried out on any part of the lnfant FlowTM Driver. E.M.E. (Electro Medical Equipment) Ltd. has a policy of continual improvement and update of all products.

Technical bulletins are sent to all registered users of the company's products to keep them informed of any

product changes. We welcome suggestions from users for product improvement and enhancement - please

write to the either the Marketing or Research

orworn parts must be replaced only with parts manufactured, sold or approved by E.M.E. (Electro

Development departments with your comments.

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Service

Manual

Product Specification

Gas Supply Range Power Supply Power Supply

page 28 for options), Internal charge with fifteen (1 5) minutes remaining after the low battery indicator illuminates.

Note: Weight

Dimensions AirlOxygen Mixer Flowmeter Auxiliary Outlet

M672B - DlSS underside mounted or Mini-Schrader Quick Connect underside mounted, both with integral check valve and

M672P - DlSS side mounted or Quick Connect front panel mounted, both with integral check valve and 15 Ipm capability.

Nominal 4 bar, clean, dry medical air and oxygen.

Minimum 2 bar, maximum 6 bar. Maximum differential pressure 2 bar.

M672B - 200 to 265VAC, 0.1 OA, or 95 to 135VAC, 0.20A, 50 to 60Hz.

M672P - 12VDC, 1A from approved AC adaptor (see approved accessories list on

12V

LeadJAcid Battery- The battery has a life of four (4) hours from a full

It can take up to sixteen (1 6) hours to recharge a fully discharged battery.

M672B - 6.2Kg

M672P - 5.6Kg

21 2x1 70x1 40mm (excluding gas inlets, patient outlets and mounting brackets).

Range 21 to 100% oxygen, accuracy &3% of selected output.

Range 0 to 15 Ipm, accuracy

Mixed gas outlets, several types available dependant on model, all optional.

Ipm capability.

of selected output.

Pressure Relief

1 Patient safety

2 System/delivery circuit safety - mechanical internal relief valve preset at 205cm H20.

Manometer Oxygen Monitor Alarm System

alarms are set after 2 minutes operation without operator intervention although the operator can manually set or reset them if required.

1 Supply gases failure

limit of 2 bar or one gas fails completely an alarm will sound and the gas at the higher pressure only will be delivered to the patient.

2 High patient pressure

alarm automatically activates a pressure relieving solenoid which instantly reduces the pressure in the patient circuit to zero. The pressure is restored after should the cause of the alarm condition still exist. visual indication is set 3cm

3 Low patient pressure

measured CPAP pressure or at

4 Failure to deliver correct oxygen concentration -Audible and visual alarms are provided at

2 systems fitted

automatic electronic valve system preset to vent to ambient at 1 I cm H20.

Range, 0 to + 12cm H20, accuracy

Range 0 to 100% oxygen, accuracy i 2% of span.

Four separate alarm systems are provided all of which are automatic, the electronic

If the differential pressure between the two inlet gases falls outside of the

An audible and visual high pressure alarm is preset at Ilcm H20. This

H20 above the measured CPAP pressure.

An audible and visual low pressure alarm is set at 2cm H20 below the

cm H20 if this would otherwise be negative.

cm H20.

seconds but will be reduced to zero

second high pressure alarm with audible and

672-819

(3)

2001-01-24

The

Infant

FZolvTM

System

the measured Fi0,at the time of arming of the alarm with an upper maximum limit of 101% and a

18%

lower minimum limit of 20%. There is a low hazard warning at

60601

-1

Classification M672B - Class M672P - Internally Powered Equipment, Type

This equipment is rated for Continuous Operation.

Type

IPX 0

IPX

oxygen or below.

Storage Conditions

Safe for storage at Relative humidity 90% non-condensing.

Atmospheric pressure 0.6 to 1.4 Bar. Minimum Shipping Temperature - O°C Operating Environment - 10" to 40°C

Keep dry and do no expose to direct sunlight.

This product meets the EMC requirements of EN60601-1-2.

NOTE - Although the Infant FlowTM driver meets the requirements of current EMCIRFI legislation this

does not guarantee immunity from all sources of radiated energy. Some mobile telephones and other

products containing radio transmitting components may cause malfunction of the lnfant FlowTM driver

and should not be used in the vicinity of the device.

-All of the functional accessories supplied by EME for use with the lnfant FlowTM driver are for

NOTE

single patient use only. These accessories include the lnfant FlowTM generator, delivery breathing

circuits, humidification chambers, silencerlbacteria filters and fixation bonnets. Under no circumstances should sterilisation or re-use of these products be attempted. Please see the

disclaimer on page

to 50°C.

of this manual.

.............................................................................................

............................................................................................

Service

Manual

Performance Verification Procedure

This performance verification procedure provides a means of determining whether the EME lnfant FlowTM Driver meets its design specifications. These tests are intended to be performed in the Hospital by qualified personnel. The procedure should be performed at least every four months or more frequently if desired or if

the device is suspect. The check list must be followed exactly and if the lnfant FlowTM Driver fails to meet any specifications it

should be removed from service until calibration

electrical safety tests be performed the

to tests with equipment such as a

NOTE: It is recommended that hospital personnel responsible for the Performance Verification Tests maintain records of their activities and identify equipment authorised for use.

WARNING: Oxygen vigorously accelerates combustion. To avoid explosion hazard do not use any instrument

or other equipment that may have been exposed to mineral oil or grease contamination.

N1672P is an internally powered device and should not be subjected

Rigel tester.

andlor service is accomplished. Please note that should

The performance verification procedure is divided into three tests, the first for the second for the pressure manometer and the third for the oxygen analyser.

The following special equipment is necessary to perform the tests fully, a manometer

accurate to f 0.2 cm H,O, adjustable pressure regulators, a calibrated oxygen analyser accurate to a1 % and a typical breathing circuit with an lnfant FlowTM Generator and prongs attached. Do not attempt to perform

the tests without suitable equipment.

First Test Observe the air inlet filter. If this is dirty or wet it should be replaced. Connect the lnfant FlowTM Driver to supply gases which are adjustable from

regulator sets to suit most pipeline systems. Please request ordering information from the customer services department.

Overall Accuracy Compare the oxygen analyser readings to mixer settings of 21, 40, 60, 80 and 100%. The mixer has a

specified accuracy of a 3%. If the oxygen analyser is accurate to within should agree within

Accuracy with varying inlet pressures

obtained with equal inlet pressures (4 Bar each). Vary the inlet pressures to the mixer to 3 Bar oxygen and 4

Bar air and then 4 Bar oxygen and

that the oxygen reading does not vary by more than 3% at each extreme. Alarm module test

reduce the air inlet supply to 2 Bar or just under. The alarm should sound and the oxygen analyser should read 100%. Increase the air supply pressure slowly, the alarm should cut out at around the Repeat the procedure varying the oxygen pressure. When the alarm sounds the oxygen analyser reading

should drop to 21%.

AirlOxygen Mixer

Set both supply gas pressures to 4 Bar. Select a flow of 8 Ipm on the Flowmeter.

at the various settings.

Starting with the oxygen and air supplies at 4 Bar and 60% (the alarm should be silent)

0 to 4 Bar or more. EME supply

1 % the setting and the analyser

Select 60% and observe the reference oxygen analyser reading

Bar air. Note the oxygen analyser reading at each extreme and verify

airloxygen mixer, the

(e.g. Timeter RT200)

Bar level.

Second test

Set the mixer to 21 minute. If it is not adjust the lower potentiometer accessible from the left-hand side of the driver to obtain a reading of 21

Set the mixer to 100% and observe that the oxygen reading is stable at 100% after one minute. If it is not adjust the upper potentiometer accessible from the left-hand side of the driver to obtain a reading of 100%. If

adjustments are found to be necessary repeat this procedure two or three times as there may be some small

interaction between the controls.

Oxygen Analyser

and the flowrate to 8 Ipm. Observe that the oxygen reading is stable at 21% after one

Once the end point calibration is satisfactory set the mixer to

and

between

63%.

60%

and check that the analyser reads

Third Test - Pressure Manometer Tee the test manometer with the hand pump bulb in line into the pressure input port on the front panel of

the lnfant FlowTM Driver. Check that both the bar graph manometer and the test manometer are at zero

then inflate the system to

indicates

cm H20. If it doesn't, referthe device for full calibration.

Reduce the pressure by

cm H20 and observe that the bar graph manometer display illuminates and

cm H,O at a time and ensure that the bar graph manometertracks the pressure.

Fourth Test -Alarm Functions

Attach the delivery circuit and lnfant Flow Generator to the lnfant Flow Driver. Set the flow to

occlude the prongs and check that the bar graph manometer shows

cm H20. Press the ArmIMute

Ipm,

button for 3 seconds to set the alarms and then occlude the exhaust tube of the lnfant Flow Generator to

create an over-pressure above

cm H20, at this point all of the LED'S in the bar graph illuminate, the

pressure vent valve operates immediately releasing the pressure to near zero and the alarm sounds. Remove the occlusion to the exhaust tube and press the

ArmIMute button for 3 seconds to reset the

alarms. Remove the occlusion to the prongs allowing the pressure to drop to zero. Observe that the low

pressure alarm activates immediately. Press the

the prongs again to restore the pressure to

Increase the flow to set the pressure to

ArmIMute button once, this will silence the alarm. Occlude

cm H20 and observe that the visual alarm cancels.

cm H20 and observe that the high alarm activates after

seconds. Reduce the flow to drop the pressure to 3 cm H20 and observe that the high alarm cancels and

that the low alarm activates after

seconds.

If any of the above alarm functions fail to perform refer the driver for full service and calibration.

Routine maintenance of the Infant FlowTM Driver is limited to regular checking of the oxygen analyser calibration

and periodic status of the gas inlet filters, integrity of the alarm systems and cleaning of the exterior surfaces.

monthly) checking of the calibration of the airloxygen mixer and Electronic pressure manometer,

We recommend annual replacement of all filters, silencers, certain

kits containing all necessary parts are available for all models of the lnfant FlowTM Driver. See the spare parts

list Appendix

An lnfant FlowTM Driver in need of re-calibration, service or repair must not be used until the necessary

procedures are performed and the equipment has been tested to ascertain that it is functioning correctly.

The exterior air filter can be observed through the polycarbonate bowl. If it is discoloured or wet it should be

replaced.

the bowl.

CAUTION: The precision gas mixing device incorporated in this product may become non-functional or

damaged if used without the protective water trap and filters provided.

Oxygen Analyser Calibration The integral oxygen analyser is of the fuel cell type and as such requires a regular calibration check. To

perform this check set up the lnfant FlowTM Driver as for use and allow a minute forstabilisation of the device. Select an oxygen concentration of remove the small white plug adjacent to the

to give a reading of

remove the small white plug adjacent to the to give a reading of may be some small interaction between the set point controls if a gross adjustment is required, the process may need to be repeated two or three times. If this is the case it is indicative that the fuel cell is wearing out and should be replaced. Refer the lnfant FlowTM Driver to a competent service authority for replacement of

the fuel cell. Once calibration is completed please replace the white plugs.

on page

special tool (part number

for the appropriate kit to suit your driver.

21.

Set the mixerto

100.

Return the mixer to the

Mxxxxxx)

219'0,

loo%,

is supplied with the

wait one minute and verify that the display indicates

mark on the side if the device and adjust the potentiometer

wait one minute and verify that the display indicates

100%

mark on the side of the device and adjust the potentiometer

position and verify that the display reads

"0"

rings and the oxygen fuel cell. Service

M672P

driver to facilitate easy removal of

21.

100.

If not,

There

Changing the Oxygen sensor The oxygen sensor must be changed annually

M672

lnfant FlowTM Driver the sensor is located in the mechanical section immediately behind the flowmeter.

Nlethods of access vary dependant on the model. In all cases ensure that the lnfant FlowTM Driver is disconnected from the power input supply.

M672B

6mm instrument head screws 8mm pan head screws on the rear cover and the remaining two

electronic module. Disconnect the grounding straps and slide the module forward to facilitate easy removal

of the oxygen sensor. Carefully remove the electrical connector from the old cell by using a small blade screwdriver to release the locking clip and unscrew the oxygen sensor from the flowmeter mounting block.

M672P

together with the forward to facilitate easy removal of the oxygen sensor. Carefully remove the electrical connector from the

old cell by using a

the flowmeter mounting block.

The new oxygen sensor must be carefully screwed into the block, ensure that the O-ring is fitted before screwing in. Fit the electrical connector into the new sensor observing the polarity. Re-assemble the lnfant

FlowTM Driver, apply stabilise before performing the only after calibration is satisfactory.

-To gain access remove the top cover of the enclosure. This is achieved by removing the four

on each side), the top cover can then be lifted off. Remove the four

Remove the three

srnall blade screwdriver to release the locking clip and unscrew the oxygen sensor from

t'he air and oxygen and switch on the power. Allow two hours for the oxygen sensor to

screws on the bottom of the Driver, the

screw in the top left rear panel. The entire mechanical assembly may now be pulled

full two-point calibration. Return the Infant FlowTM Driver for use with patients

orwhen calibration is no longer possible. In all versions of the

x 6mm instrurner~t head screws on the

screw on the rear of the Driver

672-819

(3)

2001-01-24

The

Infant

FZOWTM

System

Dependant on storage and shipping conditions it is known that the output of galvanic oxygen fuel cells may

drift for the first few days of use and it is recommended that the calibration is checked daily for the first three days after a new sensor is fitted.

Cleaning

The exterior surfaces of the Infant FlowTM Driver can .be cleaned with a mild soap or liquid disinfectant solution. Do not use cleaning agents that contain abrasives.

Always disconnect the Infant FlowTM Driver from the power input supply before cleaning. CAUTION: Do not immerse any part of this device in water or gas or steam sterilise it. Damage will result.

Service

Manual

M672B

can be set to suit a range of input voltage conditions. Voltage selection is made by lifting a flap under the fuseholder and sliding the tray out. The voltage selector may then be withdrawn and refitted as required to suit the mains voltage available. Four settings are provided, these are 1

Power Supply -The M672B incorporates a multi-tapped transformer with a voltage selector which

OOV, 120V, 220V and 240V.

M672P

lead acid battery and integral battery charger. The power switch on the rear panel only switches the power to the electronics and

driver to be switched off whilst also allowing the battery to remain on charge. A fully charged battery will

enable the

NOTE:

within 20 minutes

external power not be applied the battery will continue to discharge even after the

ceased to operate.

The charger is capable of recovering a totally discharged battery this could take up to 16 hours depending

on the level of discharge. It should however be noted that once an external power source is connected the

unit will perform perfectly even though the full battery backup facility may not be available for an extended

time period.

Display display board are routed through the 40 way connector "Alarms Armed"

D5 are driven by driven by

button,

luminous intensity for the displays is controlled by a signal derived from LDRI. The two display drivers

require,different signals to change the brightness of the displays. To accomplish this two op-amp circuits are

provided on the processor board.

Power Supplv -The M672P is a battery operated instrument which incorporates a 12 volt sealed

not

the external power to the battery charger circuitry. This enables the lnfant FlowTM

lnfant FlowTM Driver to operate independently for at least 4 hours.

It is essential that the M672P be connected to an external power source whenever possible and

ofthe red low battery indicator illuminating. Should the power switch not be turned off 3 the

lnfant FlowTM Driver has

The display and processor board are mounted as a pair on the front panel. The signals to the

CONl. The pressure bar graph, Dl3 to D26 and the

LED'S Dl 8, are driven by IC3, a MM5450N LED driver. The alarm LED's, Dl 1, D27, D2 and

IC2, a UCN5812A. The seven segment oxygen concentration displays, LDI to LD3, are

ICI, an ICM7212AMIPL display driver. Also fitted on the display board is the "ARMIMUTE" push

SWI, and a NORP12 light dependant resistor, LDRI, for the auto-dimming of the displays. The

The

M672P Display board has three additional LED's fitted which are the battery status indicators. These are

connected to the power supply board with a 5 way lead.

Processor

CON1

programmable and, should it become defective, can only be replaced with a pre-programmed device obtained

from EME or an authorised distributor. The micro-controller contains the following elements:

The Microprocessor qlock signal is generated by XTLI and C2, a 4 MHz external crystal and capacitor.

There is no provision for adjusting the frequency of the oscillation.

The processor board fits behind the display board and is connected to it by a 40 way connector,

The instrument is based around a Motorola 68705 type micro-controller ICI. This device is one time

6805 Micro Computer

bi-directional I10 Lines

Input Only Lines 4 Channel Analogue to Digital Converter 3776 Byte Programmable Read Only Memory 112 Byte Random Access Memory 8 Bit Timer

Pre-Scaler

7 Bit Memory Mapped I10

The pressure sensor PTI, is a Sensym solid state device having a range of 0 to 1 PSI which is fitted directly

to the processor board. It can withstand up to 20 PSI without sustaining damage. This item is not a standard

component as it is specially selected to our specification for low noise and zero temperature drift. It must only be replaced with a device to the same specification obtained from EME or an authorised distributor.

The reference section of the

produce 12 V to energise the pressure sensor. The pressure sensor with potentiometer VR3 being used to adjust the stage gain. Stage 1 of used in conjunction with VR7 to swing the output of the amplified output from the pressure sensor circuit is applied to the analogue input

In parallel with this signal is

ensures that the inputs to the micro-controller cannot go outside the limits of the ADC reference. On the

mixer monitor PCB is mounted on the front panel of the mixer unit. The potentiometer is used to monitor the oxygen control shaft position. It is connected between OV and depending upon where the mixer shaft is set. Stage 1 of and

100%

the oxygen alarm limits, IC4 is again used to clamp the signal to the micro-controller. On the

alarms are set on the measured oxygen value. Input AN2 on provides an offset to trim out any zero error from the oxygen sensor, whilst stage 3 provides the necessary

amplification. VR8 adjusts the offset and VR4 adjusts the gain. IC4 is used to clamp the signal. Input AN4 on

IC1 is spare and is connected to ground to prevent noise pick-up from getting into the measurement circuitry.

On the The display brightness levels are generated from the

resistive circuit, VR2 and

this. The brightness of the 7 segment displays is set by the difference between this level and

brightness of the bar graph

the voltage at its wiper.

M672B only input AN1 on IC1 is used for the signal conditioned mixer monitor potentiometer. The

IC8 stage 2, provides an offset to ensure that the output achieves a level of 0.05V at 21

0,.

VR6 adjusts the offset and VR5 sets the span. This section of the electronics is used for determining

M672P input AN1 is also spare and is tied to ground in a similar fashion.

LM10, IC7, produces 200 mV which is amplified by the op-amp section of IC7 to

AMP02, IC6, provides the signal conditioning for the

IC5, a LM324, is

APM02 so that any offset can be trimmed out. The

AN0 of the micro-controller.

IC4, a Thomson L9700 or Texas Instruments TL7726 precision clamp. This

5V and feeds an output of a proportion of this

IC8, an LM324 quad op-amp, amplifies the signal

and 5V at

M672P the

IC1 is used forthe oxygen monitor. IC8 stage 4

NORP12 signal fed back from the Display Board. A

R11, is used to set the overall brightness level and the fed-back signal modulates

15V. The

LED'S is adjusted by using trimmerVR1 to set a constant current dependant upon

IC5 stage 3 and transistor TR2 form a voltage controlled constant current source.

The audible alarm is fitted on the Processor Board and is driven by the micro-controller via MOSFET The audible alarm is powered from the +I 5V rail and is a high efficiency type, selected for its high output at

low voltages.

An over-pressure relief valve is fitted in the Infant FlowTM Driver to vent any excessive pressures to atmosphere.

This slave over-pressure valve is driven by the micro-controller using a solenoid valve as a 'master. The

power source for the solenoid valve is a three terminal regulator, REGI, connected as source. The solenoid valve is operated by a MOSFET, TR3, connected in series with opto-coupler, rnonitor the function of the solenoid valve circuit.

Also fitted on the Processor Board is a two-stage watchdog circuit. The first stage,

SG3548N which has four sense inputs, an inverter and a threshold input. The inverter is connected so as to allow monitoring of the minus 15V power rail by Sense 4 input. The 5V and 15V power rails are monitored by Sense 2 and Sense

the set levels. The tolerance on the over and under voltages is set by using the threshold input. The resistors,

R6 and R8, set the window width to plus and minus 5%. The line input, which is normally used to monitor an

AC input, is used here to gate the watchdog reset pulses from the micro-controller with the power supply

monitorsignal to produce outputs at pins 7, 9 and 10. Whilst all is well, this pulsating signal is applied to IC3 pin 6 to prevent timing out of the watchdog. IC3 is a Maxim AD694AN microprocessor supervisory circuit, of which only the 1.6 second timer is used. If any power rail goes above its permitted value, the value, the

the micro-controller will reset after 1.6 seconds delay. C12 provides a short delay on operation of the sense

inputs to avoid operation on transients.

inputs respectively. The Sense inputs are checked for voltages both over and under

MAX694CPA, Supertex MP694P or an AMD

output at pin 9 will go low; if any power rail goes below its permitted

output at pin 10 will go low. In either case, the watchdog reset pulses will be interrupted and

IC2, is a Silicon General

constant current

TRI.

IC9, to

Service Manual

M672B

and

M672P

Electronics Trouble Shooting

Guide

Problem or fault

M672B - The electronic module does not function at all

M672B - Electronic module continually resetting

M672P - The electronic module does not function

M672P - Electronic module continually resetting

att all

Possible cause

No mains power

Power supply fault

5 VDC supply faulty

1 5VDC supply faulty

15 VDC supply faulty

Battery discharged

Power supply fault

5 VDC supply faulty

1 5VDC supply faulty

Corrective action

Power cord connected?

Mains switch turned on? Voltage selector set correctly3 Check primary fuses Check plug fuse (if fitted)

Power connector plugged in?

PSU

Check BRllBR2 bridge rectifiers and voltage regulators

External power source connected?

External power source switch turned on?

Check primary fuses Check PSU fusible link and

DC to DC converters

secondary fuses,

15 VDC supply faulty

All displays dim

Audio alarm works but visual does not

Visual alarm works but buzzer does not

Manometer display off Parts of manometer display Faulty display driver Check

missing

Auto dimming circuits faulty or not set correctly

Alarm

LED'S defective

Buzzer faulty

Buzzer drive circuit fauty Faulty display driver

Faulty

LED'S Check LED'S

Check

IC 5

Check alarm

Check buzzer

Check TR3

VR1 , VR2, LDRI and

LED'S

(ZVN4306A)

IC2 (MM5450N)

The

Infant

FlowTM

System

+ 26 hidden pages

E.M.E. M672B, M672P User manual

Specifications and Main Features

Frequently Asked Questions

User Manual