Meech 914 User manual

Model 914
Operating
Manual
Shockless AC Bar

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
Inspection 3
Operation 4
Installation 5
Technical and Construction 8
Maintenance 9
Fault Finding 10
Repairs and Warranty 14
CE Approval 15
Health and Safety 15

3
Introduction
The Meech Model 914 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 914 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 914 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 914 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 914 has been found to give charge decay
times that are up to eight times faster than standard AC shockless
eliminator bars.

5
Installation
The 914 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
excellent performance at high web or product speeds, whilst 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.
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

6
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.

7
3. Avoid proximity to earthed parts of the machinery as this will distort the corona and
reduce its e󰀩ciency.
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
Technical and Construction
Operating voltage : 5.0 kV AC
Max temperature : 85°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 : 2 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.
Operating Range : 25 - 100mm

9
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.

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 914 ionising bar forms part of a system, comprising the bar itself and a
Model 905 Power Unit.
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 914 bar follow the procedure detailed below.
1. Switch o󰀨 the electrical supply to the system and disconnect the IEC plug.
10

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.
11

4. Having checked the power unit reconnect one Model 914 ionising bar.
5. Using a high voltage probe and meter measure the voltage on the pins of the
ionising bar. This voltage should be approximately 4.5kV.
6. If the voltage is below 4.0kV then the bar should be returned to Meech for service
and/or repair.
7. If no meter and probe are 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 or earth point
on power unit.
12

Holding the wire insulation, approach any of the bar emitter pins with the bare end
of the wire or metal clip end.
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.
8. If there is more than one bar to test, disconnect the rst item and repeat the above
step with subsequent bar. 13

Repairs And Warranty
The 914 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.
14

15
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.

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]