Meech 971 User manual

Model 971
Operating
Manual
Shockless DC Ionising 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., 26.10.17
Contents
Introduction 3
Unpacking and Inspection 4
Installation 8
Maintenance 11
Fault Finding 13
Repairs And Warranty 17
Technical and Construction 18
CE Approval 18
Health and Safety 18

3
Introduction
The Meech 971 has been designed to provide highly effective long range ionisation
using Pulsed DC Technology.
The 971 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 971 is powered by any of the range
of Meech Pulsed DC Controllers.

4
Unpacking And Inspection
Your 971 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.
Features and Benets of the 971
Overall look
The prole of the 971 bar is rounded, with minimal dirt traps, making it useful for
cleanroom applications. The bar has good rigidity, allowing it to span wide widths.
Mounting is by M4x20 T bolts in a slot at the rear of the bar.

5
Upstand
The upstand between the nozzles is a vital feature of the 971 bar. By increasing the
tracking distance between positive and negative pins, the upstand helps maintain good
performance even when the bar is contaminated.
Emitter Assembly
The emitter assembly is a one piece moulding with a 1mm diameter sharp titanium
emitter pin. The use of titanium pins has a long history at Meech. Extremely hard
wearing, the pins last for many years. The emitter features castellation that protects the
operator from the point of the emitter. The castellation also allows very easy cleaning of
the pin using a brush. This is a great improvement on other pulsed DC bars. The open
design of the emitter also gives a performance boost over previous systems.

6
Meech Emitter Key and Replacement Emitters
Replacement emitters will be available in bags of ten. Each bag will include an
emitter key to allow their easy removal and re-tting. A tool to facilitate removal and
replacement of the emitter pins is also available.
Air-Boost
Air Outlets
Air Outlets
Whilst the long range performance of the 971 is excellent, some installations can
require the use of air assistance to get full control of the static. This can either be by
increased speeds of decay and/or by increased ionisation range. Air outlets either side

7
of the emitter pin ensure that the integrated air-boost is extremely efcient. Each 971
bar is supplied with a 6mm push-t air tting pre-installed.
Increased Voltage Handling
Internal changes to the bar ensure absolute reliability at the higher voltages supplied by
the 977CM. The ceramic resistors that couple each emitter to the high voltage supply
provide shockless operation whilst still giving excellent ionisation performance. Fully
encapsulated, they are protected from any moisture or chemical ingress and give the
bar a protection classication of IP65.
Feature Benet
Powerful long range Ionisation Excellent static control on modern, fast machinery
Rigid prole Minimises the number of mounting points required
Resistive coupling Safe for operators to handle
Titanium emitter pins Continue to give good ionisation after years of use
Replaceable emitter assemblies Allows periodic replacement to extend service life
‘T’ slot mountings Provides complete exibility of mounting points
Integrated air-boost Increased performance for demanding
applications

8
Installation
The 971 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 800mm away from the target area.
The Meech 971 can be connected to any of the Meech range of Pulsed DC
Controllers.
The 971 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 971 Bar
will now produce Pulsed DC ionisation from the emitters of the bar.