Meech 935 User manual

Model 935
Ionising Air Blower
Operating
Manual

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., 21.06.2011, Issue 8.
Registered design no: 1040273-1; 2008 30273 452.2
Contents
Introduction 3
Installation 5
Maintenance 7
CE Approval 10
Fault Finding 11
Repairs And Warranty 14
Technical and Construction 15

3
Introduction
Meech Blowers are powerful static eliminators which will give many years of excellent
service, provided that the following instructions are observed closely.

4
General Notes On Operation
The typical Meech Blower installation consists of one or more blowers connected to a
Meech Power Unit.
THIS APPLIANCE MUST BE GROUNDED/EARTHED THROUGH THE MAINS
ELECTRICAL SUPPLY.
The Power Unit converts the primary electricity supply into a high voltage, low
amperage output. This energy is transferred to the Meech Bars in the mouth of the
blower by the HT cable.
The titanium pins of the bars emit the energy to form an ionised air corona. The
fans inside the blower provide an air ow to transport the corona to the object to be
neutralised. When a statically charged object passes through this corona, the free
moving ions are attracted to the opposite charge on the object. In this way the static
electricity is neutralised. Unused ions in the corona recombine or are discharged to
earth.

5
Installation
The correct positioning of the blower is vital to the efcient operation. Please observe
the following instructions.
Distance From Object
Although the blower has excellent long range neutralisation capabilities, the general
rule is that it should be as close to the object as possible.
If we say neutralisation power at a distance from the object of 30cm is 100% then the
relative n eutralisation performance at longer distances.
Distance “A” Relative Performance
30 cm 100 %
50 cm 90 %
100 cm 60 %
200 cm 30 %

6
Intervening Objects
If the ionised air is blown through earthed objects (eg a machine frame or cross-rods),
these will absorb some of the ionisation and so reduce the neutralisation power. Avoid
this whenever possible.
CAUTION: It is recommended that the following procedure be observed for safe
operation of the Model 935 Blower:
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 off and thus operatives may gain
access to the machine and our equipment, there will be no danger to operatives
working in close proximity to our product.
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.
935 Blower
Issue 2
Page 4
27/6/05
Intervening Objects
If the ionised air is blown through earthed objects (eg a machine frame or cross-
rods), these will absorb some of the ionisation and so reduce the neutralisation
power. Avoid this whenever possible.
Caution
It is recommended that the following procedure be observed for safe operation of
the Model 935 Blower:
1. The supply voltage of the power supply must be interlocked with the ON/OFF
control of the machine to which the equipment is fitted.
2. This will ensure that whilst the machine is switched off and thus operatives
may gain access to the machine and our equipment, there will be no danger
to operatives working in close proximity to our product.
3. 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.
No ionis ation in shado
w
of earthed object
FIG 4
No ionis ation in shado
w
of earthed object
FIG 4
935 Blower
Issue 2
Page 5
27/6/05
Maintenance
The Static Eliminator bars in the mouth of the blower should be cleaned regularly
to keep the emitter pins free from dust and other contaminants. A toothbrush is
ideal for this.
Cleaning of the emitter pins of the ionisation bars:
* ensure the blower is switched off and isolated from the mains electrical supply.
* remove the front black plastic grill by bending gently and pulling out.
* using a tooth brush ( or a similar brush with non conductive bristles), brush
the pins and upper surface of the two white ionising bars.
* With a cloth clean the exterior and interior surfaces of the blower.
* Replace the black plastic grill by the reverse procedure.
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")

7
Maintenance
The Static Eliminator bars in the mouth of the blower should be cleaned regularly to
keep the emitter pins free from dust and other contaminants. A toothbrush is ideal for
this.
Cleaning of the emitter pins of the ionisation bars
Ensure the blower is switched off and isolated from the mains electrical supply.
Remove the front black plastic grill by bending gently and pulling out.

8
Using a tooth brush (or a similar brush with non conductive bristles), brush the pins
and upper surface of the two white ionising bars.
With a cloth clean the exterior and interior surfaces of the blower.

Replace the black plastic grill by the reverse procedure.
9

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”)
10

Fault Finding
Tests must be completed by a qualied electrical engineer.
If in doubt contact Meech head ofce or your local distributor.
CAUTION: Whilst no danger to personnel exists, it is essential than any high
voltage ionising equipment, make 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. High voltage electrical equipment should
not make contact with water.
The Model 935 blower forms part of a system, comprising itself and a Model 903 or
904 power supply.
To verify where a fault may have occurred it is important to test each item of the
system individually. Should more than one ionising appliance be connected to one
power supply, these must be tested individually.
To check the Model 935 blower follow the procedure detailed below.
Switch off the electrical supply to the system.
Disconnect all ionising appliances from the power supply.
11

Follow the test procedure for the Model 903 / 904 power supply. This can be found in
the relevant instruction manual.
Having checked the power supply reconnect the 935 blower.
Using a high voltage probe (RS 610 281) and meter (RS 610 590) measure the
voltage on the pins of the ionising bars. The voltage should be approximately ~ 6.5 kV.
If the voltage is below 4.5 kV, then the item should be returned to Meech for service
and / or repair.
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.
12

Connect one end of the cable to the earth post of the blower.
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.
As the spark is drawn a slight buzzing sound will also be heard. This would indicate
the bar is functioning correctly.
If there is more than one appliance to test, disconnect the rst item and repeat the
above steps.
13

Repairs And Warranty
The 935 blower 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 agent. 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

Technical and Construction
Fan voltage :Either 240v or 110v - please specify.
Operating voltage :7 kV.
Pin energy :0.15 millijoulles approx.
Max temperature :60°C.
Length
:
20 cm to 300 cm in 20 cm steps.
Other sizes to order.
Cable :3 metres of screened H.T. Cable as standard, longer
lengths can be specied when ordering.
Weight :4.5 Kg/400 mm approx.
Dimension (mm) :184mm W x 171.5mm H
Construction :Body: Anodised aluminium extrusion, steel end
plates.
Mounting :Steel “L” xing brackets are supplied with each unit
Switch :On-off switch on backplate for fans.
Operating range :300 - 1200mm
15

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Meech International (UK)
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OX29 0YN, UK
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Meech CE
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Széchenyi út. 46
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Meech Elektrostatik SA
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Shavo House, Survey No.21A / 10 B, Plot No.394
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India
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Co. Ltd
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Shanghai 201103
China
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Fax: [phone]*201
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