Meech 200 Series User manual

Model 225
Operating
Manual
Ionising Blower

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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
Contents
Introduction 3
Installation and Use 4
Front Panel Features 4
Indicator LED’s 5
Periodic Maintenance 8
Calibration 8
Repairs And Warranty 11

3
Introduction
The Model 225 has been designed and developed to meet the demanding
requirements of the electronic and pharmaceutical industries. It combines fast
static charge removal with highly balanced ion output. The charge decay and ion
balance performance of the 225 combined with its quiet operation, low particulation
and minimum maintenance requirements make the unit ideal for electronic ESD
applications.
Unpacking And Inspection
The Model 225 Ioniser has been carefully packed at the factory in a container
designed to protect it from accidental damage, dust and contamination. 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. Meech Static Eliminators should be notied of any
claims.
Description
The Meech Model 225 is a powerful ionising blower that uses sophisticated electronics
to maintain a highly balanced ion output with long-term stability. Visual indicators and
an audible alarm warn the operator if the unit goes out of balance or if ion production
falls below acceptable limits due to dirty pins. An optional auto-shutdown function is
also provided to protect the work area in the event of a unit malfunction.
Model A225-1200

4
Installation and Use
The Model 225 Ioniser is designed for under-shelf mounting. Swivel mounting
brackets allow the unit to be rotated and clamped so that the ion airstream can be
directed over the required work bench area.
The mains supply is connected to the ioniser via its IEC ( the mains supply must
be elctrically grounded / earthed.) socket located on the rear of the blower. The
IEC socket of the blower incorporates the blower's main ON / OFF switch. The unit
contains an internal switch mode and thus will operate from mains voltages of 95-265
Volts AC at frequencies between 47-63Hz.
An earthing post on the rear panel of the Ioniser may be used to connect the unit’s
enclosure to the same potential as the anti-static workbench.
During normal operation of the Ioniser, care should be taken not to upset the ion
balance by touching the grill or allowing any object to come into contact with it.
WARNING - High voltages are present in the unit.
Qualied / Authorised personnel only
Under no circumstances should the unit be opened without rst turning o󰀨 the
power and isolating the unit by disconnection of the power cord. Operators
must not try to insert ngers or any other object through the grill apertures.
Front Panel Features
The front display panel of the Model 225 features six indicator LED’s and one ion
balance adjustment potentiometer (POT).
225Ionising Blower
5 2a 2b 2c 4 3 6 1

5
Indicator LED’s
1. Power On LED (Green)
This illuminates when the unit is switched ON and indicates that an electrical supply is
present within the Ioniser.
2. (a, 2b, 2c) Ion Balance Indicator LED’s ( Red, Green,
Red)
This array of three lamps indicates the ion balance state. Under normal operating
conditions only the middle (Green) lamp will be illuminated. This indicates that the ion
output from the ioniser is balanced. If the ion emission becomes imbalanced and the
imbalance exceeds the alarm limits (standard factory setting +/- 25V) then the green
lamp will dim or extinguish and either the positive (+ve) red LED or the negative (-ve)
red LED will illuminate dependant upon the polarity of the out of balance condition (
see “Fault Finding” later).
3. Inspect Pins (Red)
This lamp only illuminates when the emitter pins of the ioniser have become dirty and
the ion output has fallen below a factory pre-set level. i.e. when insu󰀩cient ionisation is
being created to fully maintain optimum performance.
4. Auto Shutdown (Orange)
In normal operation this lamp will not be illuminated. The lamp will only illuminate when
the unit has detected a fault and the appropriate Selectable Diagnostic Functions have
been selected ( see “Alarm Function” later). When the lamp is illuminated, the HV
supply to the emitter pins will have been automatically switched o󰀨 by the control circuit
of the ioniser. The ioniser fans and other indicator lamps will remain ON. Ion Balance
Adjustment

6
Ion Balance Adjustment
5.Ion Balance Adjustment POT
Balance adjustment is achieved via the recessed potentiometer. Turning this
potentiometer will increase or decrease the +ve or –ve ion output resulting in a
change in ion balance at the target surface .
Fan Speed Selection
6. Fan Speed Selection Switch
The fan speed can be selected using the fan speed selector switch on the
front panel of the blower. In this mode the fan speed can be adjusted to
one of 3 positions: high, medium and low.
Rear Sockets
7. Mains Input Socket with illuminated rocker switch
Connection of the mains supply via an IEC plug and cable (supplied) is at this point.
The electrical supply must be earthed / grounded. The rocker switch on the IEC socket
provides the Main ON/ OFF switch for the Blower.
8. RJ11 Socket
The RJ11 socket provides a means for an external ioniser controller to be attached to
the Model 225. (see “Specication” for wiring instructions).
7 9 8 10

7
9. RJ45 Socket
This socket provides output signals so that the Model 225 may be monitored remotely
by a Factory Management System (FMS) or similar. ( see specication for wiring
instructions).
10.Calibration trim POTS
Used for factory calibration
Alarm Function / Selection ( found on blower PCB)
11. Alarm Selection DIP switch
The DIP switch enables various alarm functions to be set - typically sounding of an
internal audible alarm and auto shut down functions in the event of either out of
balance and / or inspect pins alarms .
12. Calibration / Normal Operation Jumper
This jumper selects either normal operation mode or calibration mode. In calibration
mode some functionality of the blower is disabled.
12
11

8
Periodic Maintenance
The periodic maintenance required by the unit will depend on the amount of dust or
contaminants in the operating environment. The high voltage emitter pins and grill
will typically require monthly cleaning. However, the optimum frequency of cleaning
will depend upon the operating environment and the number of hours of operation.
Periodic cleaning should not be postponed until the Inspect Pins lamp becomes
illuminated. However if the Inspect Pins lamp does illuminate then the unit should be
cleaned as soon as possible.
Touching or cleaning of the emitter pins or grill should only be performed with
the unit turned o󰀨 and isolated from the electrical supply.
Access to the pins is achieved by removing the door retaining screws and hinging
it open. Cleaning of the pins and grill should be carried out using a cotton swab
dampened in isopropanol. Operators should avoid touching the pins with their ngers
as they are very sharp.
The emitter pins must be allowed to dry before the unit is switched back on
(typically 5 minutes)
If the pins are found to be worn and require replacement, the pins should be removed
using a pair of round nose pliers and replacements tted. Replacement pins are
available from Meech.
Calibration
This should be completed by Authorised Personnel only
The Model 225 has been factory calibrated in accordance with ANSI-EOS/ESD-
S3.1-1991. to achieve a maximum balanced ion output in standard applications. It is
calibrated using a charge plate monitor at maximum fan speed with the charge plate
450mm from the blower grill.

9
Normal Operational Mode - Ion Balance Adjustment.
(A suitable charge plate monitor is required - 6” Charge
plate , 1000 to 100V decays).
In normal operational mode (jumper on PCB set to NORM) ion balance can be
adjusted using the Ion Balance Control POT on the face of the blower.
Insert a POT adjuster tool through the hole and rotate the ion balance control POT
until zero volts is displayed on the charge plate monitor.
When the POT adjuster is inserted into the blower the ion balance indicator light will
ash to indicate adjustment is being made.
On removal of the POT adjuster tool the factory set OOB alarm limits (+/-25V) will
automatically be readjusted around the new zero ion balance setting.
On removal of the POT adjuster tool the OOB light will cease ashing after 2 seconds.
Normal Mode - Verication of Out of Balance (OOB)
Alarm Limits.
It is possible to check the OOB alarm set points in normal mode.
i) Before making any adjustments make a note of the charge plate monitor
voltage reading. Insert a POT adjuster tool (do not remove it during
this procedure)
(ii) Rotate the Balance Control POT towards positive. The Positive OOB alarm
LED will illuminate at its set point. Note the voltage seen on the charge plate
monitor.
(iii) Turn the balance control towards negative. The negative OOB alarm LED
will illuminate at its set point. Note the voltage on the charge plate monitor.
(iv) Adjust the balance control POT for the reading noted in (i) above . The
positive and negative alarm set points will remain at the readings noted
in (ii) and (iii)

Specication
Dimensions : A225-0600 100 x 600 x 200 ( H x L x D)
: A225-1000 100 x 1000 x 200
: A225-1200 100 x 1200 x 200
Weight : A225-0600 4.6 Kg
: A225-1000 8.2 Kg
: A225-1200 10.5 kg
Enclosure : Powder Coated steel
Access to emitter pins : Through hinged door.
Input voltage : 95 to 265 V 43 to 76 Hz
Ozone : < 0.01ppm
Ion Balance at set up : +/- 5V ( +/1V or better with remote sensor)
Max operating temp : 60 Deg C
Decay Speed : < 4 seconds at maximum fan speed using a
charge plate monitor at 450mm (18”) from the
blower,
1000 to 100V test.
RJ11 remote sensor connection: Connection when viewing the socket of the blower
Status Output connections :
1, 2, 3, 4
Pin 1 : Inspect Pins (5V when illuminated)
Pin 2 : Auto shut down (5V when
illuminated)
Pin 3 : Sensor signal
Pin 4 : +ve OOB (5V when illuminated)
Pin 5 : 5V
Pin 6 : In balance (5V when illuminated)
Pin 7 : Earth/Ground
Pin 8 : -ve OOB (5V when LED illuminated)
1, 2 ...... 8
10

Fault Corrective Action
Inspect Pins LED on face of blower
illuminated
(i) Emitter pins of ioniser need
cleaning (see periodic
maintenance).
Positive or Negative OOB LED
illuminated
(i) Adjust Ion balance control POT
until green balance light is
illuminated.
(ii) Clean blower emitter pins
Auto Shut Down LED Illuminated (i) Ioniser cannot maintain a
balanced ion output.
• Ioniser sensor grill
obstructed or not tted
correctly.
• Emitter pins require cleaning.
• Unit requires recalibration
Ioniser will only reset when the
mains power switch has been
turned OFF / ON
Repairs And Warranty
The Ioniser 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 Ioniser directly to Meech or your distributor.
All products returned to the factory MUST be accompanied by a return authorisation
number and must be shipped prepaid
Meech Static Eliminators Ltd. liability under this warranty is limited to replacing or
repairing any unit returned by the purchaser that has not been subject to misuse,
neglect, repair, alteration or accident. In no event shall Meech Static Eliminators Ltd
be liable for collateral or consequential damages.
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 11

absorbing material. Include a note stating the nature of the problem as specically as
possible, and also include instructions for returning the Ioniser 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.
Important
Your Ioniser has been designed to minimise the e󰀨ects of localised static charges. If
your processing involves generation of considerable static charges you may need more
powerful equipment. Meech Static Eliminators Ltd has available a complete line of
Ionising Blowers, Air Guns, Bars and Overhead Room Systems to meet all your Static
Elimination requirements.
Health And Safety
Ozone : Considerably below international standard of 0.1 ppm.
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.
12

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©Meech Stac Eliminators Ltd 2017 www.meech.com
Meech Internaonal
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OX29 0YN, UK
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China
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Singapore
038987
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