Meech 914EX User manual

Model 914EX
Operating
Manual
Shockless AC Bar

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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., 27.10.2017
Contents
Introduction 3
Inspection 3
Operation 4
Installation 5
Maintenance 8
Technical and Construction 9
Special Conditions for Safe Use 10
Fault Finding 11
Repairs and Warranty 15
CE Approval 16
Certication 16
Health and Safety 16

3
Introduction
The Meech Model 914EX has been designed to meet the most arduous of static
elimination problems. The special resistive coupling of its emitter pins renders them
shockless, whilst giving powerful static neutralisation performance. This enables the
Bar to eliminate very high static charges on high speed webs and at longer ranges
than has been previously possible.
Inspection
The Model 914EX Bar was carefully packed at the factory. Nevertheless, we
recommend careful examination of the carton and contents for any damage.
If damage is evident, keep the packing material and immediately notify the carrier
of a possible damage claim. Shipping claims must be made by the consignee to the
delivering carrier.

4
Operation
The typical Meech Model 914EX installation consists of one or more bars connected
to a Meech Model 905 Power Unit.
The Power Unit converts the electrical supply into a high voltage, low amperage
output. This output energy is transferred to the 914EX bar by the HT cable.
The resistively coupled electrodes are energised by the AC voltage from the Power
Unit. The electrodes emit this energy (corona discharge) in the form of a eld of
ionised air. This ionised air supplies ions of both polarities.
Electrostatically charged products which pass through this corona are immediately
neutralised and become static free.
Under test conditions, the Meech Model 914EX has been found to give charge decay
times that are up to eight times faster than standard AC shockless eliminator bars.

5
Installation
The 914EX Bar can be placed between 25mm and 100 mm from the surface to be
neutralised. It is important to ensure that the target surface has free air on both sides
and that earthed metal objects are, where possible, at least 20 mm away from the bar.
These precautions will maximise the unit’s ionisation capability.
Good results can be achieved at distances up to 100mm but as the distance from the
object increases, the speed of charge neutralisation will decrease.
A typical installation distance is 40mm from the target surface. This gives exellent
performance at high web or product speeds, whilest avoiding possible damage from
web breaks or product mis-feeds. Very fast webs may require the bar to be as close
as 25mm to the web.
Correct positioning of the bar(s) is vital to e󰀩cient operation. The following diagrams
show the correct installation procedures:
1. The optimal distance from material to be neutralised.

6
Mounting of the bar is by 20mm M4 studs mounted at the rear of the bar.
The chassis of the bar is electrically connected to ground on the power unit via
the exible armoured conduit. However, it is good practice to provide a secondary
grounding through the xing points where practical.
The HT cable and armoured conduit require connection to a Meech model 905 power
unit. Please consult the 905 instruction manual for further instruction.
2. Free space is required on opposite sides of the target material, not a roller or solid
object.
3. Avoid proximity to earthed parts of machinery as this will distort the corona and
reduce its e󰀩ciency.

7
4. If bars are needed on both sides of the material, they should be staggered.
5. The bars must be earthed for correct operation. If in any doubt run an earth wire
from the bar to the earth stud on the Power Unit.

8
Maintenance
Ionisers require periodic cleaning. During normal operation, dirt will build-up on
the emitter pins and upon the body of the ioniser. This will cause a reduction in
performance.
Typically, weekly cleaning is su󰀩cient. However, equipment used in some heavy
contamination areas, such as gravure printing or where plastic fumes are present, may
require daily cleaning. Equally, in a Class 100 area, cleaning may only be required on
a monthly basis. Advanced systems with performance monitoring, e.g 977CM and
904CM, will alert the operator to the need to clean the equipment before performance
drops to an unacceptable level.
Before cleaning, ensure that the equipment is switched o󰀨.
Emitter pins can be cleaned very e󰀨ectively with a brush. A dry toothbrush is ideal.
Ionising bars will need periodic wiping to clean grey deposits from the surface
of the bar. A cloth moistened with a small amount of IPA or methylated spirits is
recommended.
Should you have any additional questions regarding the maintenance of Meech
equipment please contact Meech International directly or you local Meech distributor.

9
Technical and Construction
Operating voltage : 5.0 kV AC
Max temperature : 30°C
Length : Available in lengths of 80 mm to 4000 mm in
25 mm steps. Overall length is 60mm greater
than the e󰀨ective length.
Cable : 5 metres of HT cable shielded in exible
conduit is supplied as standard. Alternative
lengths are available to suit specic
applications
Weight : Approx 400gms per 1000mm length
Cross section : 14mm (W) x 17mm (H)
Construction : Anodised aluminium outer with PVC
extruded liner and resin potted components.
Emitter Points : Titanium pins with integral emitters
Mounting : 2 x M4x20mm studs.

10
Special Conditions for Safe Use
1. The static eliminator bar shall be installed according to the manufacturer’s
installation instructions for the Model 914 EX.
2. The static eliminator bar must be protected from mechanical impact.
3. If there is any damage to the web or material that is being neutralised by the static
eliminator bar, then the bar must be checked for damage and relevant
maintenance or replacement of the bar carried out.
4. The 914 EX static eliminator bar shall be used in conjunction with only Meech
Type 905 power supplies.
5. The power supply must be protected by a fuse capable of withstanding a
prospective short circuit current of 1500A.
6. When used in dust environments, the equipment may not be used in association
with dusts having an electrical resistance equal to or less than 10³Ω.m,
7. When used in dust environments, the equipment may be used only with dusts
requiring an ignition energy of greater than 0.2mJ.
8. The user must determine, in consultation with the manufacturer, the suitability of
the apparatus for use with particular solvents.

Fault Finding
Tests must be completed by a qualied electrical engineer.
If in doubt please contact Meech head o󰀩ce or your local distributor.
CAUTION: Whilst no danger to personnel exists, it is essential that, with the exception
of bars with a water resistant option, high voltage ionising equipment, makes no
contact with water or water based uids. Should such an event occur, disconnect
immediately and return equipment to the manufacturer for water damage assessment.
The Model 914EX ionising bar forms part of a system, comprising the bar itself and a
Model 905 Power Unit. (See Fig 2)
To verify where a fault may have occurred it is important to test each item of the
system individually. Should more than one bar be connected to a power unit, these
must be tested individually.
To check the Model 914EX bar follow the procedure detailed below.
1. Switch o󰀨 the electrical supply to the system and disconnect the IEC plug.
11

2. Disconnect all ionising bars from the power unit.
3. Follow the test procedure for the Model 905 Power Unit. This can be found in the
instruction manual of the Model 905.
4. Having checked the power unit reconnect one Model 914EX ionising bar.
12

5. Using a high voltage probe and meter measure the voltage on the pins of the
ionising bar. This voltage should be approximately 4.5 kV.
6. If the voltage is below 4.0 kV then the bar should be returned to Meech for service
and/or repair.
7. If no meter and probe is available, then a fast and simple test can be
undertaken by shorting a pin of the bar to earth.
Attach a short length of insulated wire to either xing stud on the bar.
13

Holding the wire insulation, approach any of the bar emitter pins with the bare end
of the wire.
As the pin is approached, a small faint spark should jump from the pin to the wire.
As the spark is drawn a slight buzzing sound will also be heard. This indicates that
the bar is functioning correctly.
If there is more than one bar to test, disconnect the rst item and repeat the above
steps with subsequent bars.
14

Repairs And Warranty
The 914EX bar 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 bar 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 bar 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.
15

CE Approval
A CE 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”)
Certication
EC type examination certicate No:
BASEEFA 10 ATEX0097x
Meech Static Eliminators Ltd
Witney, Oxon, OX29 OYN, UK
Tel: [phone]; Fax: [phone]
e-mail: [email protected]; web: www.meech.com
II 2GD Ex mb IIA T6 Gb
1180
Current:<5mA, Voltage: 5kV; T
amb -20
o
C to +30
o
C
Model: 914Ex Baseefa:10ATEX0097X
Ex mb IIIC T85
o
C Db
Health and Safety
Emission of Ozone: Considerably below international standard of 0.1 ppm.
16

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