Meech 976 User manual

MODEL 976
Operating
Manual
Long Range DC 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
Ofce or visit www.meech.com.
© Meech Static Eliminators Ltd., 5.01,2012
Contents
Introduction 3
Unpacking and Inspection 4
Installation 5
Maintenence 8
Fault Finding 10
Repairs And Warranty 15
Technical and Construction 16
CE Approval 17
Health and Safety 17

3
Introduction
The Meech Model 976 has been designed to provide highly effective long range
ionisation using Pulsed DC Technology.
The 976 Bar provides ionisation through alternating positive and negative emitter pins
mounted in a proled extrusion. The emitter pins are resistively coupled to the high
voltage pulsed DC source, rendering the emitters shockless to touch. The emitter pins
are removable to enable cleaning or replacement.
The extruded prole has been designed to enhance emitter life and allow easy
cleaning while giving linear strength. The prole incorporates “T” slots on three faces
to provide universal mounting points. The Meech Model 976 is powered by any of the
range of Meech Pulsed DC Controllers.

4
Unpacking And Inspection
Your Model 976 Bar was carefully packed at the factory in a container designed to
protect it from accidental damage. Nevertheless, we recommend careful examination
of the carton and contents for any damage.
If damage is evident, do not destroy the carton or packing material and immediately
notify the carrier of a possible damage claim. Shipping claims must be made by the
consignee to the delivering carrier.

5
Installation
The Model 976 Bar should be located in the most convenient position so that the
pins of the bar are directed towards the target area. The bar should be positioned to
give an unrestricted path for the ions to travel to the target area. It should typically be
between 300mm and 600mm away from the target area.
The Meech Model 976 can be connected to any of the Meech range of Pulsed DC
Controllers.
The Model 976 connects to the Pulsed DC Controller by plugging the male plugs,
found at the end of the bar cabling, directly into the high voltage sockets of the
controller. The plugs and sockets are marked with “+” positive and “-” negative
indicators for correct connection to the power supply.
Connect the mains supply to the Pulsed DC Controller and switch ON. The 976 Bar
will now produce Pulsed DC ionisation from the emitters of the bar.

6
The shockless emitter pins produce ions of positive and negative polarity. These,
because of the product’s unique design, propel themselves away from the emitter
points towards the target area.
Optimum static elimination can be achieved by adjustment of the “Rate” (frequency of
pulsing) and the “Balance” (proportion of positive to negative ions generated) on the
Controller.
If the bar is positioned a long distance from the target area (600mm-750mm) the
“Rate” should be set to the lowest setting. If the bar is positioned close to the target
area (150mm -300mm) the “Rate” should be set towards its maximum.
If the polarity of the static charge to be removed is known the balance can be adjusted
to give a faster decay speed.

7
I.E. a) If the static charge is known to be positive the balance should
be adjusted towards negative on the controller.
b) If the static charge is known to be negative the balance should be a
adjusted towards positive on the controller.

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 suf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 off.
Emitter pins can be cleaned very effectively with a brush. A dry toothbrush is ideal.

9
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.
Let dry for a minute and replace the outer cap. Re-assemble the emitter pin onto the
bar and turn back on.
If on inspection, the emitter pins of the Bar are very dirty or damaged they should be
replaced. Replacement emitters are available from Meech Static Eliminators Ltd. or
your local Meech Distributor.

10
Fault Finding
Tests must be completed by a qualied electrical engineer.
If in doubt contact the Meech head ofce or your local distributor.
CAUTION: Whilst no danger to personnel exists, it is essential that any 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.
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 supply, each
must be tested individually.
To check the Pulsed DC system follow the procedure detailed below:
1. Switch off the electrical supply to the system.

11
2. Disconnect all bars from the controller.
3. Reconnect the supply and switch on the unit.

4. Using a high voltage probe (RS type 610 281) and meter (RS type 610
950) measure the voltage on each of the output sockets. The reading should
be at minimum power 4kV and at maximum power 8kV
5. Having checked the power supply, reconnect one Model 976 Bar.
12

13
6. Using a high voltage probe (RS 610 281) and meter (RS 610 590) measure
the voltage on the pins of the bar. This voltage should be between 3 and 6kV.
7. If there is more than one bar to test, disconnect the rst item and
repeat the above steps.

If no meter and probe is available, then a fast and simple test is to simply short a pin
of one of the ionising bars to earth using a length of insulated electrical cable bared
back 3 mm at either end.
Connect one end of the cable to the earth post of the bar.
Approach the pin of the bar with the other end of the cable. As the conductors of the
cable approaches the pins of the bar a small faint spark should jump from the pin
to the cable conductors. If the bar is under direct sunlight or bright lights it may be
difcult to see this spark.
14

Repairs And Warranty
The Meech 976 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 Ltd. or your local Meech 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 that 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 shipping
costs on any repairs covered under the warranty.
15

Technical and Construction
Output voltage : Up to 10kV D.C.
Operating current : Less than 50 micro amps.
Max temperature : 60°C.
Weight : 400g per 300 mm
Cable : 2 metres as standard shielded in exible conduit
longer lengths can be specied when ordering.
Dimensions : 50mm x 50mm x length required.(Max 4000mm)
Construction : FR ABS extrusion
Emitters : Titanium (replaceable)
Mounting : Universal via “T” slots tted with 2 x M4 x 20mm
studs as standard. “T” slots are located on three sides
of the bar to allow mounting exibility.
16

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”)
Health and Safety
Emission of Ozone: Considerably below international standard of 0.1ppm.
17

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OX29 0YN, UK
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Meech CE
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(Shanghai) Co. Ltd
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Shanghai 201103
China
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Kaiserbaracke 66
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Belgium
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Meech Shavotech
Shavo House, Survey No.21A / 10 B, Plot No.394
South Main Road, Koregaon Park,
PUNE 411 001
India
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e-mail: [email protected]
©Meech Static Eliminators Ltd 2012 www.meech.com