Meech 905 Series User manual

Model 905
Operating
Manual
High Voltage Power Supply

Products shown in this document may be covered by one or more patents, patents applied for
and/or registered designs and/or trade marks. For further information please refer to our Head
O󰀩ce or visit www.meech.com.
© Meech Static Eliminators Ltd., 26.10.2017
Contents
Introduction 3
Input Voltage and Connection 4
Installation 5
Ionising Equipment Connection 6
Technical Characteristics 10
Fault / Diagnostic Check 11
Maintenance 14
Repairs And Warranty 14
CE Approval 15
Health and Safety 15

3
Introduction
The Meech Model 905 high voltage power supply has been designed to
operate any of the Meech range of ionising equipment requiring a 5kV AC power
source.
The Model 905 converts mains voltage AC (110 / 240V) input into a high
voltage output (5.0 kV AC) suitable for connection to Meech ionising
appliances.
The Model 905’s unique design features a modied AC output waveform which
ensures that ionising appliances attached to it are in operation for longer time periods
in any one cycle. The modied output waveform of the 905 also minimises stress on
ionising appliances attached to it, thereby ensuring long term reliability of the ionising
system.

Input Voltage and Connection
Installation and connection of the Meech Model 905 must be completed by a
qualied electrical engineer.
For safety reasons this equipment must be grounded / earthed either via the
mains plug or by direct connection to ground / earth.
4
High voltage output ON
indicator
Fused mains IEC
input socket
Ionising appliance
connection ports
Connection socket for 900vs2
High Voltage Sensor
Earth post
Input voltage selector
switch (110 / 240V)
Illuminated ON/OFF
mains switch

5
Installation
The 905 power supply should be mounted in a ventilated enclosure or free air
space using the anged mounting plate. It is important that it is mounted in such a
position to prevent oil or moisture from other sources contaminating the supply.
Failure of the unit through contamination will invalidate the warranty.
The Model 905 can operate from either a 110V or 240V switchable AC mains supply. It
is available in two versions: 905-50 for 50Hz operation and 905-60 for 60Hz operation.
Select the appropriate input voltage on the input voltage selector switch.
A small at blade screwdriver should be used to rotate the selector switch if it is
necessary to change the selector switch setting.

6
Ionising Equipment Connection
Before making any connections, ensure unit is disconnected from mains.
The 905 has 4 ionising appliance connection ports (2 on each side). Remove the lid of
the 905 by unscrewing the three retaining screws, select the required number of ports,
one per ionising appliance, and remove the necessary grommets from the ports.
Connect the item of ionising equipment by removing the lock washer and nut from the
swivel connector of the appliance.
Push the connector through a port in the power supply adjacent to the high voltage
terminal.

7
Then ret both the lock washer and nut to the appliance connector.
Ensure that the nut is fully tightened.
Connect the cable eyelet of the appliance to the high voltage stud of the 905 using the
screw provided.

8
Ensure that the nut of the appliance connector is fully tightened.
Repeat for each ionising appliance and replace the lid.
2m mains lead and IEC plug are supplied for connection to the 905. Insert the IEC
plug into the IEC socket of the 905 ensuring the illuminated ON / OFF rocker switch is
in the OFF position.
Connect the free end of the mains cable to the mains supply.
For safety reasons this equipment must be grounded / earthed either via the mains
plug or by direct connection to ground / earth.
Switch on the ionising system via the illuminated ON / OFF rocker switch of the 905.

9
In normal operation the ON / OFF switch will be illuminated red and the High Voltage
indicator will be illuminated green.

Technical Characteristics
Model 905-50 Model 905-60
Mains input
selectable 110/240V 110/240V
Input frequency 50Hz 60Hz
Output 5.0kV 5.0kV
Short circuit current < 5 mA < 5 mA
Weight 3.4Kg 3.4Kg
High voltage indicator YES YES
Fuse 500mA 400mA
fast Blow fast Blow
Dimensions (h x w x d) 113x150x130mm 113x150x130mm
Power 140W 140W
Maximum load 12m of cable 12m of cable
and product and product
UL approved YES YES
10

Fault / Diagnostic Check
Tests must be completed by a qualied electrical engineer.
If in doubt contact Meech head o󰀩ce or your local distributor
FAULT - High Voltage indicator dim or extinguished
1) Check ON / OFF switch is illuminated.
2) Check voltage selector switch is set to the correct setting ( 110v / 240 V)
3) Check mains frequency is correct for the Model of 905 (see 905 lid).
4) Check the fuse in the IEC socket of the 905.
11
1
24
3
3
3

5) Check voltage on the high voltage connection post.
a) Disconnect all ionising appliances connected to the power
supply.
b) Remove all nuts or washers from the high voltage stud area
of the 905.
c) With the lid removed, reconnect the supply and switch on the
unit. Check to see if the High Voltage indicator is illuminated.
If illuminated, the power supply is OK - check ionising
appliances attached (see appliance Operation and
Maintenance Manual). Be extremely careful not to touch the
connections to the switch or the mains feed. These
connections carry mains supply.
d) Using a high voltage probe (1000 to 1) and Digital Volt Meter
measure the voltage on the output studs. The reading should
be 5.0kV.
12

e) If a high voltage probe and meter are not available the unit can be tested
as follows:
Using a screwdriver with a good insulated handle place the shaft of the
screwdriver against the wall of the power supply.
Approach the output terminal post with the tip of the screw driver.
As the output post is approached a spark should jump from the stud to the screw
driver. The spark should jump an air gap of 2 to 3 mm. If no spark is present then
the unit is faulty.
6) Check ionising appliance integrity (see also the appropriate operation and
maintenance manual).
Attach each ionising appliance individually to the 905. Switch on the 905 and
check the High Voltage indicator is illuminated. If the high voltage indicator fails to
illuminate, the appliance is faulty.
13
Note: You cannot test the power supply itself with a connected ioniser. If the ioniser
has failed, for example by shorting to earth, this will overload the power supply and
e󰀨ectively turn it o󰀨. Thus no spark will occur, even though the power supply is OK.

14
FAULT - Fuse repeatedly blows
1) Check mains supply
2) Check voltage selector switch for correct setting.
Maintenance
The only maintenance required is that the exterior of the power supply should be
cleaned regularly to keep it free from dust and other contaminants.
Repairs And Warranty
The 905 power supply is warranted by Meech Static Eliminators Ltd to the original
purchaser against defects in material and workmanship for one year after purchase.
Should any malfunction occur, please return the power supply directly to Meech
Static Eliminators or your local distributor. All products returned to the factory MUST
be accompanied by a return authorisation number and must be shipped prepaid. For
prompt service, ship the unit to the factory with the return authorisation number shown
clearly on the label. Be sure it is well packed in a sturdy carton with shock absorbing
material.

Include a note stating the nature of the problem as specically as possible, and also
include instructions for returning the power supply to you. We will pay one-way return
surface shipping costs on any repairs covered under the warranty.
Field repairs should not be undertaken during the warranty period. Repair
attempts by unqualied personnel will invalidate the warranty.
CE Approval
An EC Declaration of Conformity for this product exists in respect of the Low Voltage
Directive:72/23/EEC (“LVD”) & Electromagnetic Compatibility Directive: 89/336/EEC
(“EMCD”)
Health and Safety
Emission of Ozone: Considerably below international standard of 0.1ppm.
15

16

©Meech Stac Eliminators Ltd 2017 www.meech.com
Meech Internaonal
2 Network Point
Range Road, Witney
OX29 0YN, UK
Tel: [phone]
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email: [email protected]
Meech Stac Eliminators
(Shanghai) Co. Ltd
7G, 7F, LP Tower
#25 Xiangfeng Road
201103 Shanghai
China
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Meech Stac Eliminators USA Inc
2915 Newpark Drive
Norton, OH 44203
USA
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29/2, Kharadi
O Pune-Nagar Road
On Old Kharadi Mundhwa Road
Pune : 411014 , Maharashtra
India
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Meech Elektrostak SA
Kaiserbaracke 166
B-4780 St.Vith
Belgium
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[phone]
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(Singapore) Pte. Ltd.
7 Temasek Boulevard
12 - 07 Suntec Tower One
Singapore
Singapore
038987
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Meech CE
Gábor László utca 2
Budapest 1041
Hungary
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[phone]
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