Meech 993R User manual
993R Spark Free
Operating
Manual
Generator 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
Oce or visit www.meech.com.
© Meech Static Eliminators Ltd., 27.10.17
Contents
Introduction 3
Unpacking and Inspection 4
Operation 5
Installation 6
Installation Caution Notes 7
Technical Specication 8
Maintenance 9
Repairs And Warranty 10
CE Approval 10
Health and Safety 10
3
Introduction
Model 993R
The Model 993R is a high performance Generator Bar for use with the Meech range
of 50kV and 30kV high voltage DC power supplies. The 993R features resistively
coupled emitter pins, rendering it near shockless and providing a controlled delivery of
power.
4
Unpacking and Inspection
Your Generator 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
Operation
A typical charging system comprises one or more generator bars connected to a
Meech high voltage power supply.
The Power supply converts the primary electricity supply into a high voltage DC
output. The generator bars are connected to this output by means of an EHT cable.
The resistively coupled electrodes of the generator bar are energised by the high
voltage DC, generated by the power supply. The electrodes emit this energy in the
form of a Corona Discharge. This electrical discharge creates an ion stream of a
single polarity (dened by the type of power supply from which it is operating). Non-
conductive materials passing through the ion stream, between the emitters of the bar
and a grounded plate, take on the same electrical charge and adhere to the ground
plate (see below).
6
Installation
Correct positioning of the bar is vital for ecient operation. The bar should be
positioned directly opposite an earthed point/plate or a bar of opposite polarity. Non-
conductive materials passing between the Generator bar and earth, or bar of opposite
polarity, will be pinned together. The bar should typically be positioned 30 to 50mm
away from the nearest earthed object but this is subject to set up conditions. If the
generator ‘trips’ the bar has been positioned too close to and ground reference.
The bar should be positioned away from any other ground reference point. These
may disrupt the ion stream and reduce the eectiveness of the bar and the degree of
pinning achieved on the process material.
Distorted ion eld
Process material direction
7
Installation“ Caution” Notes
Whilst no danger to personnel exists, it is essential that any high voltage ionising
equipment makes no contact with water or water based uids. High voltage electrical
equipment should not make contact with water. Should such an event occur,
disconnect immediately and return equipment to the manufacturer for inspection.
If the bar is positioned too close to the earth plane, an intense blue haze will be
seen between the emitter pin of the bar and the earth plane. This will cause the High
Voltage DC power supply to trip and switch o. The bar should be repositioned further
away from any earth plane and the High Voltage power supply reset (depress and
release the reset button).
The High voltage system must be disconnected from the mains electrical supply
before any adjustments to the position of the bar are made.
If the unit continues to trip, contact Meech International Head Oce or your local
distributor.
As this equipment may give an electrical shock if the pins are touched, the following
procedure must be followed:
The supply voltage of the power supply must be interlocked with the ON/OFF
control of the machine to which the equipment is tted.
This will ensure that whilst the machine is switched o and thus operatives may
gain access to the machine and our equipment there will be no danger of
operatives receiving shocks.
It is assumed that normal safety barriers are in place on the machine to ensure that
operatives are unable to access the machine and hence our equipment whilst the
machine is switched ON.
For permanently connected equipment, a readily accessible disconnect device shall
be incorporated in the xed wiring. This disconnect device must have a minimum 3mm
contact separation with appropriate current rating. For plug-able equipment, the socket
outlet shall be installed near the equipment and shall be easily accessible.
8
Technical Specication
Model 993R
Operating Voltage : Up to 50kV D.C.
Operating Current : 0.5mA max
Operating Polarity : Either +VE or -VE.
Max Temperature : 60°C
Weight : 400g per m approx.
Cable : 2 metres in exible conduit as standard,
longer lengths can be specied when
ordering
Construction : PVC extrusion, titanium emitter pins.
Dimensions : 24mm x 44mm x length (Up to 3000mm)
Power Supply : Meech Models 992v3
Mounting : Two M10 x50mm nylon studs
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