Meech 915 User manual

Model 915
Shockless AC Bar
Operating
Manual

Contents
Introduction 3
Inspection 4
Operation 5
Installation 6
Technical Data and Construction 9
Maintenance 10
Fault Finding 11
Repairs and Warranty 16
CE Approval 17
UL Certication 17
Health and Safety 17
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

Introduction
The Meech Model 915 has been designed for use on the most arduous 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 previously been possible.
3

Inspection
The Model 915 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 915 installation consists of one or more bars connected to a
Meech Model 904 Power Unit.
The Power Unit converts the electrical supply into a high voltage, low amperage
output. This output energy is transferred to the 915 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 field 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 915 has been found to give charge decay
times that are up to eight times faster than standard AC shockless eliminator bars.
5

6
Installation
The 915 Bar can be placed between 25mm and 150 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 150mm but as the distance from the
object increases, the speed of charge neutralisation will decrease.
A typical installation distance is 50mm 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 efficient operation. The following diagrams
show the correct installation procedures:
1. The optimal distance from material to be neutralised.

7
Mounting of the bar is by 20mm M4 studs mounted in a track at the rear of the bar.
These can be slid to any point along the bar’s length to meet the machine’s available
fixing points.
The chassis of the bar is electrically connected to ground on the power unit via the
flexible armoured conduit. However, it is good practice to provide a secondary
grounding through the fixing points where practical.
The HT cable and armoured conduit require connection to a Meech model 904 power
unit. Please consult the 904 instruction manual for further instruction.
1. Free space is required on opposite sides of the target material, not a roller or solid
object.

8
2. Avoid proximity to earthed parts of machinery as this will distort the corona and
reduce its e󰀩ciency.
3. If bars are needed on both sides of the material, they should be
staggered.
4. 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.

Technical and Construction
Operating voltage: 4.5 - 7.0 kV
Max temperature: 60°C
Length : Available in lengths from 80 mm to 4000 mm.
Overall length is 60mm greater than the
e󰀨ective length.
Cable: 2 metres shielded in exible conduit; longer
lengths can be ordered.
Weight: Approx 1,100gms per 1000mm length
Cross section: 18mm x 42mm (inc. of end caps)
Construction: Anodised aluminium and re retardant PVC
extrusion.
Emitter Points: Titanium
Mounting: M4x20mm studs. These are located in
a channel to provide universal mounting
points.
Operating range: 30 - 150mm
9

Maintenance
Ionising bars become contaminated with usage. Dirt build-up on the body of the
ioniser and, particularly on the pins, will cause a drop in performance. To get the best
from your bar, it should be cleaned as part of regular machine maintenance.
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. Allow to dry before turning back on.
10

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 915 ionising bar forms part of a system, comprising the bar itself and a
Model 904 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 915 bar follow the procedure detailed below.
1. Switch o󰀨 the electrical supply to the system and disconnect the IEC plug.
11

12
2. Disconnect all ionising bars from the power unit.
3. Follow the test procedure for the Model 904 Power Unit. This can be found in the
instruction manual of the Model 904.

4. Having checked the power unit reconnect one Model 915 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 6.5 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.
13

• Attach a short length of insulated wire to either xing stud on the bar.
• 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.
14

• 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
steps with subsequent bars.
15

Repairs And Warranty
The 915 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.
16

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”)
UL Certication
The Meech 915 has been granted UL certication. UL is a global leader in testing,
inspection, certication, auditing and validation.
Health and Safety
Emission of Ozone: Considerably below international standard of 0.1 ppm.
17

©Meech Static Eliminators Ltd 2017 www.meech.com
Meech International
2 Network Point
Range Road, Witney
OX29 0YN, UK
Tel: [phone]
Fax: [phone]
email: [email protected]
Meech Static Eliminators
(Shanghai) Co. Ltd
7G, 7F, LP Tower
#25 Xiangfeng Road
201103 Shanghai
China
Tel: [phone]
Fax: [phone]
email: [email protected]
Meech Static Eliminators USA Inc
2915 Newpark Drive
Norton, OH 44203
USA
Tel: [phone]
Fax: [phone]
email: [email protected]
Meech Shavotech
29/2, Kharadi
Off Pune-Nagar Road
On Old Kharadi Mundhwa Road
Pune : 411014 , Maharashtra
India
Tel: [phone]
Fax: [phone]
email: [email protected]
Meech Elektrostatik SA
Kaiserbaracke 166
B-4780 St.Vith
Belgium
Tel.: [phone]
[phone]
Fax: [phone]
email: [email protected]
Meech International
(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]