Mec Purair 750 User manual

MEC Medical Ltd.
Issue 3 Dated 08/12/2015
Page 1 of 13
Purair 750
Fully Automatic Maternity Scavenging System
For Self-Administered Analgesia
Operators Manual
MEC Medical Limited
Unit 3 Trust Estate
Wilbury Way
Hitchin
Hertfordshire
SG4 0UZ
Tel [phone]
Fax: [phone]
E-Mail:- [email protected]
Web http://www.mecmedical.com/
Document Reference IL750000 R313

MEC Medical Ltd.
Issue 3 Dated 08/12/2015
Page 2 of 13
CONTENTS Page
INTRODUCTION 2
PRODUCT IMPROVEMENT 3
RESPONSIBILITIES OF THE USER 3
RESPONSIBILITIES OF THE MANUFACTURER 3
NOTE TO SERVICE PERSONNEL 3
GENERAL CAUTIONS AND WARNINGS 3
SYMBOLS USED IN THIS MANUAL 4
CHECK LIST 5
FOR USE IN THE UNITED KINGDOM 6
SAFE USE OF THIS UNIT 6
TECHNICAL SPECIFICATION 6
EQUIPMENT SPECIFICATION 6
USER GUIDE 7
A DISPOSABLE DRAIN TRAP HOSE ASSEMBLY COMPRISES: 7
CONNECTION: 7
GENERAL MAINTENANCE 9
MAINTENANCE 9
CLEANING AND STERILIZATION 9
SERVICE / REPAIRS 9
ASSEMBLY 10
INSTALLATION OF EXHAUST LINE 11
ELECTRICAL CONNECTION 12
WARRANTY 13
SPARES 13
Read the Manual
INTRODUCTION
Once installed the Purair 750 Maternity System becomes a fully automatic Active Anaesthetic Gas
Scavenging System for self-administered analgesia, which provides medical staff with a cleaner, healthier
working environment, with full attention being given to patient safety.
Two versions are available:
1. For use in a normal delivery suite
2. For use with a Birthing Pool
They differ slightly in design and installation using the same components the Birthing Pool version only has
low voltage connection within the trunking to provide a safe user environment.

MEC Medical Ltd.
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Product Improvement
MEC Medical Ltd. has a policy of continued product improvement and therefore reserves the right to make
changes which may affect the information contained in the manual without giving prior notice.
Responsibilities of the User
The Purair 750 conforms to the specifications and operating procedures described in this manual and any
accompanying notices and labels only if it has been installed, used, and maintained in accordance with the
instructions. MEC Medical can only guarantee the safe function of the machine if it is regularly checked and
serviced at or above the standards specified in this manual.
If you suspect that any component of the machine is worn, defective or otherwise unfit for use, do not use the
machine under any circumstances.
Replace any broken, worn or contaminated component(s) immediately. Contact the MEC Medical distributor
from whom the machine was obtained for further service.
Responsibilities of the Manufacturer
The manufacturer accepts responsibility for the effects on safety, reliability, and performance of the
equipment only if assembly operations, extensions, adjustments, modifications, and repairs are carried out by
persons with written authorization from the manufacturer, and the equipment is used in accordance with the
instructions for use and the electrical installation of the relevant room complies with the ‘Regulations for the
Electrical Equipment of Buildings’.
If during the warranty period the equipment is serviced by an unauthorized party, the warranty will be void.
Note to Service Personnel
The Purair 750 must only be serviced by Qualified Service Personnel.
The contents of this manual are not binding. If any significant difference is found between the product and this
manual please contact MEC Medical Ltd. for further information.
To ensure correct functioning, the equipment must be serviced at regular intervals.
MEC Medical Ltd. recommends that the machine should be serviced at intervals not exceeding one year.
Qualified Service Personnel and genuine spare parts should be used for all servicing and repairs. MEC Medical
Ltd. will not otherwise assume responsibility for the materials used, the work performed or any possible
consequences of the same.
In communication with MEC Medical Ltd., quote the model and serial number of the equipment, with the
approximate date of purchase. If the unit is being returned for repair, indicate the nature of the fault or the
work you require to be carried out.
General Cautions and Warnings
The user must be familiar with the machine and its various functions before using it on a patient.
Incorrect use of the equipment described herein may result in injury to the patient. Read this manual
before operating the machine. You must be familiar with the machine and its functions before using it on
a patient.
Keep this manual with the system to refer to and to answer any questions that arise about the system’s
operation, maintenance or, if necessary, repair.
The PA750 is latex free, note that any replacement parts must not use latex.
Warning HAZARDS can result from unauthorized modification of this ME EQUIPMENT
WARNING: To avoid the risk of electric shock, this equipment must only be connected to a supply
mains with protective earth.
Warning: A potential for electromagnetic or other interference between this EQUIPMENT and other
devices
This ME Equipment is rated to over voltage category I according to IEC 60664-1

MEC Medical Ltd.
Issue 3 Dated 08/12/2015
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Symbols Used in this Manual
Symbols replace words on the equipment, on the Equipment Labels or in this manual.
CAUTION: There is a potential hazard
to the equipment
Exhaust
IEC symbol for denoting type B
applied part
Latex free material is used
WARNING: There is danger of
personal injury to the user or patient
Dangerous voltage
Further relevant or helpful information
No AC power supply
Turning the control in the direction of
the thickening line causes an increase
in that parameter
Internal power supply
Power off
Under voltage power supply
Power on
Fuse
IEC symbol for alternating current
Read from the top of the bobbin
Pipeline gas supply
Gas inlet
Cylinder gas supply
Gas outlet
Confers approval under the European
Medical Device Directive and the
notified body number
Warning Notices:
Warning notices denote a potential hazard to the health and safety of users and/or patients. These
notices clearly state the nature of the respective hazard and the means by which it can be avoided.
Caution Notices:
Cautionary notices denote a potential hazard to the physical integrity of equipment/software but NOT
a danger to personnel. These notices clearly state the nature of the hazard and the means by which it
can be avoided.
Relevant or helpful:
Relevant or helpful notices denote additional or useful information for operation or maintenance of
the system.

MEC Medical Ltd.
Issue 3 Dated 08/12/2015
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CHECK LIST
Description Part Nº Qty
Trunking System-Complete 750000 1
Motor Assembly 750005 1
Exit Vent Assembly 750017 1
OR
90º Vent Assembly 750045 1
68mm PVC Pipe (Black) 750035 12 metres
Tangit Glue 131700GLUE 1 per 4
Disposable Drain Trap Hose Assy 750048 1
Pipe Fixing Kit 750017P 1
(4 x reducers, 10 x Fixing Brackets, 1 x 90º Bend)
PA 750 Birthing Pool Variant
The Birthing Pool variant is similar
in appearance and performance to
the standard unit, but the front
panel mains switch is removed
and replaced with a “PULL
CORD ON/OFF SWITCH” for
safety reasons in respect of
water.
This switch is connected via a
24V Low Voltage transformer
control box.
PA 750 Standard Unit
The standard Unit has a front
panel mains switch as shown in
the inset
Switch and Flow Indicator Detail
Both systems have a Front Panel Flow indicator
A green float can be seen in the Window when the fan is running

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FOR USE IN THE UNITED KINGDOM
(UK model only)
Complying to BS EN ISO 9170-2:2008
Manufactured In accordance with BS EN ISO 9001-2015, BS EN ISO 13485-2012
Important
When connecting this System [either via a 13Amp-fused spur or a 3 pin 13Amp plug] the
following wiring colour code applies:
Blue Neutral
Brown Live
Yellow/Green Earth
A qualified electrician must undertake connection of this equipment.
For wiring illustrations see page 12
SAFE USE OF THIS UNIT
· Use a standard electrical AC wall outlet: Do not connect to any high voltage source,
used for air conditioning or central heating.
· A DC power source must not be used. Check your power source, especially on board
ships or other places where DC power is used.
· Covers should not be removed by any unauthorised person for any reason.
· Do not cover any air inlet grills or block the space around the base of the unit as this
will restrict air flow and increase the induced flow at the patient inlet.
· Do not restrict or occlude the exit vent as this will cause the fan motor to overheat and
the System will malfunction.
TECHNICAL SPECIFICATION
Standard installation provides an extraction flow rate of approx. 600Lpm
Trunking System dims (W x D x H) 178mm x 127mm x To customer spec.
Power supply 220/240 volts.
Trunking System weights approx. 14 kilos.
Pump weight 3.5 kilos.
EQUIPMENT SPECIFICATION
Electric Class 1 IEC 60601-1
Pump Power rating 46 watts / 0.35 amps.
Induced Flow rate maximum 0.8LpM .
NOTE appendix F2 130 LPM to be substituted by maximum flow.
Inlet and Exhaust pipe to be clipped at not more than 2.5 Metre Intervals
Timer over-run 15/20 minutes.

MEC Medical Ltd.
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USER GUIDE
The Purair 750 Maternity System is activated when the patient lifts the mask [Fig.1 No.6.]
from the hook-switch [Fig 1. No.12.] to self-administer analgesia during labour. Room
ventilation begins simultaneously as air is drawn from the base of the unit.
When the mask is replaced on the hook-switch, the System will continue to run for
approximately twenty minutes, to clear the immediate area, and then switch off
automatically.
The Purair 750 Maternity System is connected to the analgesic handset by means of a
Disposable Drain Trap Hose Assembly [See Fig.1] which is recommended as SINGLE
PATIENT USE.
A DISPOSABLE DRAIN TRAP HOSE ASSEMBLY COMPRISES:
Two lengths of 22mm transfer hose [Fig.1 No.3.]
One drain-trap [Fig. 1 No. 10]
One 30mm Female Connector [Fig. 1 No. 4]
One 30mm Male Connector [Fig. 1 No. 2]
The purpose of the drain-trap [Fig. 1 No. 10.] is to collect naturally occurring
condensation.
CONNECTION:
One end of the Drain Trap Hose Assembly is connected to the Patient Inlet [Fig.1 No.1.]
using a 30mm Male Connector [Fig.1 No. 2.]
Following Supplier user instructions for Patient Demand Valve, the other end of the Drain
Trap Hose Assembly is connected to the Analgesic Handset [Fig 1. No.5.] using a 30mm
Female Connector [Fig.1. No. 4.]
Following Supplier user instructions for Patient Demand Valve, connect Gas Delivery Hose
[Fig.1 No 7.] to Gas Supply [Fig. 1. No. 8 or 9].

MEC Medical Ltd.
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Fig 1
Fig 2
1. Patient Inlet 7. Gas Delivery Hose *
2. 30mm Male Connector 8. Gas Outlet Supply or 9
3. 22mm Transfer Hose 9. Gas Cylinder Supply
4. 30mm Female Connector 10. Drain Trap
5. Analgesic Handset *11. Power Supply Switch
6. Face Mask *12. Hook Switch
*Not included

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GENERAL MAINTENANCE
The trunking system should be checked regularly for dirt and obstructions. The unit may be
cleaned using a standard vacuum cleaner. In the case of the Receiving System, entry is
through the base of the trunking and care should be taken, when using a vacuum cleaner,
not to damage the foam in the silencer. All pipes should be checked regularly for damage.
MAINTENANCE
The Purair 750 requires maintenance twice yearly.
The fan is an in-line flow fan with a factory pre-set timer for approximately 20 minutes
overrun.
1. It is recommended the fan should be inspected after three months’ use to ensure there
is no build up of dirt or other deposits on the impeller or motor. Thereafter it should be
checked periodically as experience dictates or at least twice yearly.
2. All fan motors are fitted with sealed-for-life bearings and therefore do not require
lubrication.
3. To remove fan motor: Disconnect power supply. Remove motor from main housing.
After cleaning, re-assemble motor within housing, ensuring the direction of airflow (i.e.
arrow) is pointing towards the exit. Once assembled, re-connect the power supply and
test.
Cleaning and Sterilization
The Purair 750 is not a sterile system but requires periodic cleaning of all outer surfaces with
commonly used disinfectants, cleaning agents and methods.
Service / Repairs
Regular servicing of your Purair 750 Maternity AGSS can be arranged by telephoning MEC
Medical Ltd on [phone]
NB. ACCESS to Standard Unit
When removing the cover from this unit the mains switch is connected via 2 connectors
which allows the panel to be separated from the main body

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ASSEMBLY
Remove trunking from packing and place on a flat surface.
Remove screws from both sides of the trunking and lift off top panel.
TAKE CARE WITH THE HOOK SWITCH - especially when replacing top panel.
Fix the back panel to the wall, by the 6 fixing holes as
shown in the assembly drawing, ensuring the top of the
panel is flush to the ceiling.
Fix the motor in the required position.
Prepare and fix the exit vent in required location. Ensure
the exit vent is slightly lower than the motor to allow
condensation to drain externally. See diagram Page 9.
Using the supplied 68mm pipe and connectors, connect
the exit side of the fan to the exit vent. (Arrow on fan
should be pointing towards the exit vent). Glue all joints
with supplied glue.
Using the supplied 68mm pipe and connectors, connect
the trunking system to the inlet side of the fan. Glue all
joints with supplied glue.

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Installation of exhaust line
The exhaust line is to terminate outside of the building in either a 90º elbow or vent kit as
illustrated.
Care must be taken to ensure that the exit location is positioned to minimise the risk of re-
entry of expelled gasses.
On completion of installation, the Discharge Warning Label (supplied) should be attached
adjacent to the discharge point.

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Electrical Connection
After completion, replace front panel (taking care of the hook switch) and test for
operation.
Terminal Block
Grey = LS (LS)
Blue = Neutral (N)
Red = Live (L)
L

MEC Medical Ltd.
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WARRANTY
This product is made from quality tested materials, is constructed using precision
manufacturing methods and is fully tested.
Any defect due to manufacture or material fault will be rectified free of charge within 12
months of date of purchase.
SPARES
Item Part Nº
Motor Assembly 750005
Labels 750029
Disposable Drain Trap Hose Assembly 750048
50m Roll 22mm Transfer Hose 181933R
30mm Male Connector (pack 10) 181932P
30mm Female Connector (pack 10) 181932FP
Drain Trap (Pack 10) 750052P
Microswitch Assembly 750010
MEC reserve the right to change or alter product design and/or specification without prior notice or warning