CENS MINO User manual

Version 2.01
January 2014
EN352
User Guide
Level Dependent
Electronic Hearing Protection
Contains important information - do not throw away
®

2
Disposal Information
Mino CENS®
Within the European Union, the marked equipment is covered by “Directive
2002/96/EC of the European Parliament and of the Council of 27 January
2003 on waste electrical and electronic equipment.” Amended by “Directive
2003/108/EC” (WEEE).
Recycle Mino CENS®, batteries and accessories according to national
regulations.
The Mino CENS®is manufactured by Puretone Ltd for protection against noise.
They are classed as PPE and have been shown to comply with the European
PPE Directive 89/686/EEC through the harmonised European standard EN 352
(test results in the rear of this manual).
Certification body: SATRA Technology Centre, Kettering, Northants, UK (Notified
Body 0321).
Contents of Pack
Left and right devices fitted with medium black ear tip
2 wax tools fitted with red and blue replacement filters
Brush with magnet
6 batteries (size 10A)
5 pairs of various sized foam ear tips
Black zip pouch
User guide

3
D
E
A) Battery tray
B) Push-Button volume control
C) Extraction cord
D) Wax guard
E) Foam ear tip
Your Mino CENS®
Product Markings
Every Mino CENS®can be
identified by a unique serial
number located on the side
of the device, and by the
manufacturer’s name and
model ID on the opposite
side of the device.
The left and right models can be identified by the colour of the shell:
Blue for left-ear and red for right-ear.
AB
Left
C
A
B
Right
E
C

Warnings & Safety Notes
Explanation of symbols:
WARNING points out a situation that could lead to possible injuries.
Indicates possible device damage.
Advice and tips on how to handle your device better.
!
!
NOTICE
Failure to follow these instructions may reduce the product life and
reduce the hearing protection.
The output of the level dependent circuit of this hearing protector
may exceed the daily limit sound level.
Always wear your Mino CENS®in noisy environments.
If children or disabled persons need to wear Mino CENS®, ensure
adequate supervision.
Small parts present a choking hazard. Keep away from children.
If swallowed, consult medical advice immediately.
Do not expose Mino CENS®to extreme heat or moisture.
Do not expose Mino CENS®to strong magnetic fields (>0.1T).
This product is designed to protect your hearing. However, always remember
that no item of PPE can provide full protection and care must always be taken
while carrying out the risk-relation activity.
CAREFULLY READ THESE INSTRUCTIONS BEFORE USING THIS PRODUCT
PERFORMANCE & LIMITATIONS OF USE
4

5
Do not expose Mino CENS®to X-rays.
Do not use Mino CENS®in areas with explosive hazards (i.e. mines).
Always ensure the Mino CENS®is working correctly. A melody will be
heard when activated initially.
It is recommended to always carry spare batteries.
Performance may deteriorate with battery usage. The typical period
of continuous use that can be expected from the Mino CENS®battery
is over 50 hours. For infrequent use replace the battery each time
used.
A series of warning bleeps will periodically sound when the battery
becomes low and requires changing.
Always switch off when not in use.
Always use the correct size tip (see instructions) to maintain
protection levels (see page 7).
Do not wear without a ear tip fitted as the hearing protection will be
severely degraded.
Always inspect the ear tips before use and replace if damaged.
As a reusable device, ensure the fit is correct and providing adequate
protection, see instructions for “clap test” (see page 11).
Sizes supplied are 10.5mm to 14mm.
It is recommended to replace the ear tips every 30 days.
Warnings & Safety Notes
!
!
FITTING AND SIZING
PERFORMANCE & LIMITATIONS OF USE (CONTINUED)
NOTICE

6
!
!
Warnings & Safety Notes
COMPATIBILITY - Only use spare parts designed for the Mino CENS®. Lists
of spare ear tips, wax guards and batteries is in this manual.
STORAGE & TRANSPORT
REPAIR
CLEANING
MARKING - The product is marked on the shell with a serial number and a
model ID.
The design of the device makes it compatible for use with most other
types of PPE equipment. If unsure consult the supplier/manufacturer.
Always place the Mino CENS®in the supplied case after use to keep
them safe.
If the Mino CENS®become wet, remove the battery and ear tip and
then wipe with a dry cloth and leave in a warm place to dry out.
If the product becomes damaged, it will NOT provide the optimum
level of protection, and therefore should be immediately either
replaced or repaired. There are no serviceable parts (except those
listed as spares). A troubleshooting guide is contained in this manual
(see page 14).
This product may be adversely affected by certain chemical
substances. Further information should be sought from the
manufacturer.

Mino CENS®devices are supplied with 5 different sized foam ear tips:
Foam Ear Tips
Ear Tip Range
Green
Blue
Black
Red
Orange
10.5mm - Short
10.5mm - Long
12mm - Short
12mm - Long
14mm - Long
Colour Size
ACC102M-GREEN
ACC102M-BLUE
ACC102M-BLACK
ACC102M-RED
ACC102M-ORANGE
Manufacturers Part Number
(per pair)
To order replacement foam ear tips please consult your supplier or purchase
from our online shop: www.puretoneretail.net.
To find out which ear tip suits the size of your ear canal you will need to try all
5 to see which is the most comfortable and creates the best seal. If the tip is
too small then the device could fall out. If the ear tip is too large then it will be
uncomfortable and hard to insert.
Gently push the foam ear tip onto the
Mino CENS®(1) until it fits against the
shell of the device (2).
After each use the ear tips should be
cleaned with a dry cloth or replaced if
damaged.
1) 2)
7

8
Handling Batteries
Always use the correct size of batteries, as supplied with your Mino
CENS®.
Remove the tab on new batteries only when you are ready to use
them. Once the tab is removed the battery will discharge and will only
last up to one month while the Mino CENS®is not in use.
Always keep spare batteries with you. Use a fresh battery each time if
you only use Mino CENS®infrequently.
If the battery fails during use and is not replaced, your protection will
not be compromised, but ambient awareness will be lost.
We recommend using only Rayovac
or PureCell Plus 10A batteries.
10A Zinc Air Battery
To order replacement batteries please consult your supplier or purchase from
our online shop: www.puretoneretail.net.

9
Inserting The Battery
(1) Open the battery tray with a
fingernail and swing outwards until
fully open (do not use force, stop
when you feel resistance).
(2) Pull off the protective tab from
the new battery and wait a few
seconds for air to enter the battery
and begin to activate.
(3 & 4) Insert the new battery with
the small shouldered side first into
the largest opening of the battery
compartment.
Removing The Battery
Open the battery tray. Gently ease the battery out of the battery compartment.
Using the magnet on the end of the brush supplied with Mino CENS®may
make this easier.
1) 2)
3) 4)
Turning Your Mino CENS®On & Off
Mino CENS®is switched on
automatically with the insertion of
the battery and the closing of the
battery tray.
After a 5 second delay a melody will
play indicating that the Mino CENS®
is active.
Device is on Device is off

Adjusting The Volume
The volume is adjustable via the push-button.
By default, when the device is turned on Level 1 (low) will always be active.
Pressing the button once will increase the volume to Level 2 (medium).
Pressing the button again will increase the volume to Level 3 (high).
Pressing the button for a third time will reduce the volume back to Level 1
(low).
Each time you change levels, a number of confirmation beep(s) will be heard
corresponding to the level of volume selected (1-3).
The volume push-button has three preset levels:
Level 1: Low (+5dB)
Level 2: Medium (+11dB)
Level 3: High (+18dB)
Once the devices are switched on, you will be able to hear sound
as normal; however, when a loud sound is detected the device will
automatically reduce the volume to a safe and comfortable level. After the
loud sound has passed the volume is automatically returned to normal.
The volume push-button must only be operated with light pressure.
Applying excessive pressure can result in the volume push-button being
damaged. This is a precision miniature device that must be handled with
care.
10
This ear-plug is provided with level-dependent attenuation. The wearer
should check correct operation before use. If distortion or failure is
detected, the wearer should refer to the manufacturers advice for
maintenance and replacement of the battery.

Inserting Your Mino CENS®
Insertion
(1) Hold the Mino CENS®with the volume push-
button at the top.
Reduce the diameter of the foam ear tip by
gently rolling it in your fingers before pressing it
into the ear.
(2) Pull the ear up while inserting.
(3) Push gently until the foam ear tip seals in the
ear canal.
Allow at least 10 seconds for the foam ear tip to
expand and take up the shape of your ear canal.
1)
2)
3)
In the extremely unlikely event of the ear
tip remaining in the ear on removal:
Do not panic
Do not attempt to remove by yourself
Seek medical advice
Removal
Gripping the extraction cord, gently withdraw
the Mino CENS®from the ear. After removal,
clean the Mino CENS®and place in the protective
case provided.
Removing Your Mino CENS®
11
Clap Test
It is important that each device is fitted correctly
to ensure safe and effective use. To check the
fit is correct, clap your hands near each ear. You
should hear the sound but at a lower level.

12
Cleaning and Disinfection
Mino CENS®are highly sensitive systems. It is recommended that Mino CENS®
are cleaned after every use to keep them in perfect working condition and to
avoid health problems.
Clean the outside housing and foam ear tip of Mino CENS®with a soft dry
cloth or tissue, removing any debris or moisture.
Replace the foam ear tip if the ear tip looks damaged or debris cannot be
removed.
Holding Mino CENS®with the foam ear tip pointing down over a tissue,
use the brush to gently remove debris around the sound outlet and wax
guard. Any debris should fall onto the tissue which can then be discarded.

To minimise the risk of blocking and damage caused by the build-up of earwax,
each Mino CENS®is fitted with a Micro PureGuard. Mino CENS®is supplied with
2 wax guard changing tools, with a spare red and blue wax guard attached.
Replacement packs of wax guards are available separately.
Wax Guards
To order replacement wax guards please consult your supplier or purchase from
our online shop: www.puretoneretail.net.
Changing the wax guard requires the use of the Micro PureGuard tool (supplied
initially with Mino CENS®, as well as with replacement wax guard kits). Please see
below for the correct procedure for changing the wax guard. Do not attempt to
change the wax guard without using the tool.
Right
Left
Red
Blue
15
15
Side Colour Quantity
ACC315D-HF4
ACC315C-HF4
Manufacturers Part Number
Changing The Wax Guard (Blue/Left Side Shown)
5)
3) 4)
2)1)
13

Troubleshooting
Use these tips to resolve simple issues.
Sound is weak.
Mino CENS®emits whistling
sounds.
Sound is distorted.
Mino CENS®emits a series of
warning bleeps.
Mino CENS®does not work.
Consult your supplier if you
encounter further problems.
Replace empty battery.
Replace blocked wax guard.
Increase volume.
Clean instrument.
Close battery door completely.
Re-insert the instrument until it fits
securely.
Clean instrument.
Fit new ear tip.
Replace empty battery.
Replace blocked wax guard.
Lower volume.
Clean instrument.
Replace empty battery.
Check if the Mino CENS®is turned on.
Gently close battery compartment
completely.
Replace empty battery.
Make sure battery is inserted correctly.
Replace blocked wax guard.
Problem Possible Solution
14

Technical Information (EN352)
Sound Attenuation
Mean Attenuation
Standard Deviation
Assumed Protection
H=32 M=27 L=25
SNR=31
26.1
5.6
20.5
66.6
27.5
5.5
22.0
27.8
4.9
22.9
31.4
5.9
25.5
34.3
8.2
26.0
34.9
4.5
30.4
41.4
3.6
37.7
44.4
5.0
39.4
68.0 68.0 68.0 68.1 68.5 69.2 70.7 73.7
Frequency (Hz)
Medium
External Level dB (A)
63 125 250 500 1000 2000 4000 8000
59.5 64.2 69.2 74.2 79.2 84.2 89.2 94.1
Criterion Levels
H
>99
M
>99
L
>99
SNR = Single Number Rating attenuation
H = High frequency attenuation
M = Medium frequency attenuation
L = Low frequency attenuation
EN352-2:2002 EN352-7:2002
Tested by:
SATRA Ltd, Wyndham Way, Telford Way, Kettering, Northamptonshire, NN16
8SD. UK. (Notified Body No. 0321).
Tests carried out at maximum volume
Further information can be obtained from Puretone Ltd, 9-10 Henley Business
Park, Trident Close, Medway City Estate, Rochester, Kent. ME2 4FR. UK.
15
68.6 70.1 69.6 69.2 69.2 70.3 71.4 72.0 73.2
High
External Level dB (A) 59.5 64.5 69.5 74.5 79.5 84.5 89.5 94.5 99.6
99.1
64.9 66.1 66.4 66.5 66.8 67.5 68.8 71.1 74.7
Low
External Level dB (A) 59.5 64.5 69.5 74.5 79.5 84.4 89.3 94.2 99.0

Designed and manufactured in the UK by:
Puretone Ltd, 9-10 Henley Business Park,
Trident Close, Medway City Estate, Rochester,
Kent. ME2 4FR. UK.
Puretone Ltd are an LRQA (NB0088) certified
company to:
ISO 9001:2008
ISO 13485:2003
MDD 93/42/EEC
CENS®is a registered trademark of Puretone Ltd
Mino is a trademark of Puretone Ltd
EN352-2:2002 & EN352-7:2002, by SATRA, UK.