Bosch CS LD 1.0 User manual

Bosch CS LD 1.0 Refrigerant Leak Detector
en Operators Manual
Refrigerant Leak Detector
sv Användarhandbok
Köldmedelsläckdetektor

F 002 DG9 H12 2021-04-08|Bosch Automotive Service Solutions GmbH
Contents English
Innehåll svenska
|| CS LD 1.0 | 3

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Contents English
1. Symbols used 31
1.1 In the documentation 31
1.1.1 Warning notices -
Structure and meaning 31
1.1.2 Symbols in this
documentation 31
1.1.3 On the product 31
2. User information 32
2.1 User group 32
2.2 Warranty 32
3. Safety Instructions 33
4. Product description 34
4.1 Application 34
4.2 Scope of delivery 34
4.3 Description of the CS LD 1.0 34
5. Commissioning 35
6. Operating Instructions 35
6.1 Understanding sensitivity
levels and modes 35
6.1.1 Adjusting sensitivity
levels 35
6.1.2 Automatic and Manual
Reset Modes 36
6.2 Searching for leaks 37
6.3 Relative leak size indication 39
6.4 Audio mute function 39
6.5 Leak tracing function 39
6.6 Automatic shut-off feature 40
7. Maintenance 41
7.1 Sensor Filter 41
7.1.1 Check Sensor Filter
message 41
7.1.2 To Replace Filter 42
7.1.3 Filter Change Confirmation 42
7.2 Sensor 43
7.2.1 Removing and reseating
the sensor 43
7.2.2 Replacing the sensor 43
7.3 Sensor Clearing Message 44
7.4 Charging the Li-Ion Battery 45
7.4.1 Battery Status 45
7.4.2 Charging the internal
battery 45
7.4.3 Operating the leak
detector with the
charger connected 46
7.4.4 Battery temperature
warning message 47
8. Interface Displays 48
8.1 Leak detector user
interface flow chart 48
8.2 Message screens 50
9. Transport 52
9.1 Transport of device 52
10. Decommissioning 52
10.1 Disposal of electronic
items 52
11. Product Specifications 53
11.1 EN 14624:2020
Test Results 53
12. Overview of parts 54

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Symbols used | CS LD 1.0 | 31 | en
1. Symbols used
1.1 In the documentation
1.1.1 Warning notices -
Structure and meaning
Warning notices warn of dangers
to the user or people in the vicini-
ty. Warning notices also indicate
the consequences of the hazard as
well as preventive action. Warning
notices have the following struc-
ture:
Warning
symbol
KEY WORD – Nature and
source of hazard!
Consequences of hazard
in the event of failure to
observe action and infor-
mation given.
Hazard prevention ac-
tion and information.
The key word indicates the like-
lihood of occurrence and the
severity of the hazard in the event
of non-observance:
Key word Probability
of
occurrence
Severity of
danger if ins-
tructions not
observed
DANGER Immediate
impending
danger
Severe injury
WARNING Possible
impending
danger
Major injury
CAUTION Possible
dangerous
situation
Minor injury
1.1.2 Symbols in this
documentation
Symbol Designa-
tion
Explanation
Attention Warns about
possible proper-
ty damage.
Information Practical hints
and other useful
information.
Multi-step
operation
Instruction con-
sisting of several
steps.
One-step
operation
Instruction con-
sisting of one
step.
Intermedia-
te result
An instruction
produces a visi-
ble intermediate
result.
Final result There is a visib-
le final result on
completion of
the instruction.
1.1.3 On the product
Caution
Read the Original
Instructions before operation
➣
➣
➪
➜
i
!
1.
2.

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2. User information
iiBosch reserves the right to
change, update or modify the
original instructions at any time
without prior notice.
2.1 User group
The CS LD 1.0 must be used only by
a qualified refrigerant system ser-
vice technician, trained in handling
of refrigerants, personal protective
equipment, refrigerant leakage
prevention, handling of cylinders,
charging, leak detection and proper
disposal. All work conducted on
pressurized equipment should be
performed by persons with suffici-
ent knowledge and experience in
handling pressurized devices. Tho-
se persons should also be aware of
the risks and requirements involved
in the use of pressurized devices.
2.2 Warranty
The CS LD 1.0 is warranted to be
free from defects in workmanship,
materials, and components for a
period of two years from date of
purchase.
iiWarranty claims will have to be
accompanied with a copy of the
invoice in either electronic or
printed form.
The following conditions apply:
• The limited warranty applies to
the original purchaser only.
• The warranty applies to the
unit in normal usage situations
only, as described in the origi-
nal instructions. The CS LD 1.0
must be serviced and maintai-
ned as specified.
• If the unit fails, it will be
repaired or replaced at the
option of the manufacturer.
• The manufacturer shall not be
responsible for any additional
costs associated with a product
failure including, but not limi-
ted to, loss of work time and
unauthorized shipping and/or
labour charges.
• Warranty service claims are
subject to authorized inspec-
tion for product defect(s).
• All warranty service claims
must be made within the speci-
fied warranty period. Proof-of-
purchase date must be sup-
plied to the manufacturer.
This limited warranty does not
apply if:
• The product, or product part, is
broken by accident.
• The product is misused, tam-
pered with, or modified.
iiFor more information on the
terms and conditions for the
sale of goods and services, visit
www.atp-europe.de.

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Safety Instructions | CS LD 1.0 | 33 | en
3. Safety Instructions
All safety instructions are to be
read thoroughly before using the
CS LD 1.0 and they must be ob-
served.
• Avoid operating the CS LD 1.0
in direct sunlight and areas of
excessive dust, high humidity,
high temperature, large tem-
perature fluctuations or mag-
netic fields, which may cause
malfunctions and/or inaccurate
readings.
• Do not attempt to repair the
CS LD 1.0
• The CS LD 1.0 display may only
be cleaned with a soft cloth
and neutral cleaning agents.
• Do not use any abrasive
cleaning agent or rough
cleaning cloths.
• The CS LD 1.0 operates on a
lithium-ion type battery. For
long battery life and safe opera-
tion, observe all warnings.
• For prolonged and safe opera-
tion, always ensure to charge
the CS LD 1.0 battery between
ambient temperatures of 0 °C
and 45 °C.
• Disconnect the charger from
the power source when not in
use or charge is complete.
• Do not try to access the batte-
ry, contact Bosch customer ser-
vice for battery replacement.
➢Do not disassemble or
attempt to repair the
battery or protective
circuit.
➢Do not put the
CS LD 1.0 near a fire or
hot surfaces or in a hot
vehicle or under direct
sunlight as there is
chance of battery over-
heating and explosion.
➢Do not expose the
battery to temperatures
above 60 °C (140 °F).
• Do not subject the CS LD 1.0
to impact. Do not deform, pier-
ce, or damage the battery.
Do not touch a battery that
appears to be leaking or da-
maged. If battery fluid gets
in your eyes, flush with fresh
water, do not rub eyes, and
seek medical attention.
Do not keep the CS LD 1.0 unused
for extended periods to avoid da-
mage to the battery. The correct
storage environment is critical to
battery life.
• The battery should have a 40 %
to 50 % charge during prolon-
ged storage (a month or more).
• The battery should be stored in
an environment with less than
75 % RH.

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4.2 Scope of delivery
Delivery Specifications
CS LD 1.0
Original instructions
Carrying case
Spare filters (5 pieces)
USB charging block
Charging cable
4.3 Description of the
CS LD 1.0
100%
A
1
3
2
Fig. 1: Leak Detector CS LD 1.0
1. HMI
2. Probe
3. Probe tip
iiBattery life will be reduced sig-
nificantly if the battery is stored
with a full charge and/or at high
temperatures.
!Always ensure to use a charger
certified according to local
guidelines with an output rating
of 5V DC 1A for charging the
CS LD 1.0 (battery).
Risk of fire
➢Do not use the
CS LD 1.0 in the
vicinity of spilled
or open containers
of gasoline or other
flammable subs-
tances.
➢The CS LD 1.0
is designed to
operate in normal
or non-hazardous
environments. Do
not use this equip-
ment in hazardous/
explosive environ-
ments.
4. Product description
4.1 Application
The CS LD 1.0 is used for detecting
leaks of refrigerant during service
/ repair of A/C or refrigeration sys-
tems.

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Commissioning | CS LD 1.0 | 35 | en
Fig 1.1: HMI View of CS LD 1.0
1. Battery status indicator
2. Status /Leak size indicator
3. Audio status indicator
4. Audio ON/OFF button
5. Power button
6. Sensitivity / Mode selection button
7. Leak tracing mode (Graph) button
8. Sensitivity level / mode indicator
9. LCD
10. Alarm Indication (Audio off only)
5. Commissioning
1. Remove the transport pa-
ckaging.
2. Check if all items have been
delivered as per section 4.2.
3. Check the CS LD 1.0 for dama-
ges. If there are damages, con-
tact Bosch customer service.
4. Read this operators manual.
5. Charge the CS LD 1.0 (refer
to Sec. 7.4.2) using the provi-
ded charging block and cable.
An alternate charger certified
according to local guidelines
with output rating of 5V DC
1A minimum may be used,
however charging time may be
increased.
6. Once connected to the charger,
the CS LD 1.0 LCD will illumi-
nate to indicate that the battery
is charging and shows % charge
status. If the display does not
illuminate, check the power
source or verify the charger
compatibility and/or connec-
tion.
iiAvoid discharging the battery
completely. Recharging a par-
tially discharged battery more
frequently is better for the life
of a lithium-ion battery.
iiOnce fully charged, as in-
dicated on the display, the
CS LD 1.0 is ready for use.
6. Operating
Instructions
6.1 Understanding
sensitivity levels
and modes
6.1.1 Adjusting sensitivity
levels

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The unit will default to the Medi-
um sensitivity level and Automatic
mode (indicated as shown in item
8, Fig. 1.1 ) once the unit comple-
tes the warm up cycle. To change
sensitivity levels, press the Sensi-
tivity button (item 6, Fig. 1.1) once
for High sensitivity (three bars)
and again for Low sensitivity (one
bar). Pressing a third time returns
the sensitivity level to Medium.
iiThe sensitivity level can only be
changed in Automatic mode.
For more information on, and inst-
ructions for changing modes, refer
to Section 6.1.2 Automatic and
Manual Reset Modes.
6.1.2 Automatic and Manual
Reset Modes
To allow the user to find the leak
source easily, the detector can
re-calibrate itself either automati-
cally (default) or be manually re-
calibrated to the ambient level of
refigerant and reset (or zero) the
alarm after there is a detection.
In Automatic mode the Aicon will
appear in the lower left of the
screen as shown in Fig. 2. In this
mode, after an initial alarm, if the
refrigerant concentration detected
is not increased, the detector will
automatically reset the alarm af-
ter approximately 3 seconds. The
CS LD 1.0 will now only alarm to
higher concentrations. To automati-
cally return to maximum sensitivity
(for the given level set), move the
probe tip into fresh air for a few
seconds.
A
Fig. 2: Automatic mode icon
To use the detector in Manual
mode: Press and hold the Sensiti-
vity button and release when the
A(AUTO) icon is replaced with M
(MANUAL) on the display. In Manu-
al mode, the screen will display the
Micon (Fig. 3) rather than the A. In
this mode, the detector will conti-
nue to alarm if refrigerant is detec-
ted until the user presses the Sen-
sitivity button to manually reset the
alarm or the probe is moved away
from the source of refrigerant.
M
Fig. 3: Manual mode icon
Both modes allow the user to get
closer to the leak source without
the detector continually alarming
by essentially resetting the “base-
line” detection level.To return to
Automatic mode, press and
hold the Sensitivity button and
release when the Aicon is dis-
played.
To reset the alarm in Manual mode,
briefly press the Sensitivity button.
The display will show the Micon
with the reset arrow as shown in
Fig. 4.

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Operating Instructions | CS LD 1.0 | 37 | en
M
Fig. 4: Manual mode icon with reset
arrow
The reset arrow remains on the
display until a new baseline is set;
depending on the concentration of
refrigerant this may be up to a few
seconds. It is best to wait for the
arrow to clear before proceeding.
Sensitivtiy level (Hi/Med/Low) can-
not be changed while in Manual
mode. Whatever the level chosen
when in Automatic mode will be
retained when switching to Manual
mode. It is possible to use Manual
mode in any level, but the selection
must first be done in Automatic
mode, and the unit then switched
to Manual mode.
In Automatic mode, once the
source of the leak is found, the
detector will not alarm again until
the probe is moved away from the
source (reset to maximum sensi-
tivity) and back again. In Manual
mode, once the source of the leak
is found, the detector will conti-
nue to alarm at the source until
the Sensitivity button is pressed.
The unit can be reset to maximum
sensitivity by moving the probe to
fresh air, and pressing the Sensiti-
vity button again to reset.
6.2 Searching for leaks
1. Press the Power button once
to switch the CS LD 1.0 ON.
The start-up screen will dis-
play the model number and
software version followed by a
“splash” screen displaying all
icons.
2. The CS LD 1.0 automatically
starts warming its sensor.
During the warm up mode, the
LCD will indicate the progress
with increasing concentric
rings (Fig. 5) illuminating from
the center outwards. Warm
up is usually about 20 to 30
seconds,depending on tempera-
ture. When all rings are illumi-
nated the Warm-up is complete.
Audio is always OFF during
warm-up.
100%
Fig. 5: Warm up mode display

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3. The CS LD 1.0 is ready to begin
searching for leaks when the
steady audio “beep” sounds.
The center circle will flash in
sync with the audio (Fig. 6)
100%
A
Fig. 6: Steady state display.
iiWhen first purchased, or after
prolonged (> 30 days) storage,
the following action is strongly
recommended. Power on the
unit and after Warm up run with
the sensitivity level in the high
position for several minutes
before using. This action will
guarantee that the sensor is
fully conditioned for maximum
response to refrigerant gas.
Once conditioned, this process
does NOT need repeating on a
regular basis; rather only if the
sensor remains idle and stored
for an extended period.
4. To search for leaks, first ensure
the sensor is exposed to fresh
air for few seconds then move
the probe tip slowly towards the
test area or component.
5. If refrigerant is detected, the
sound will increase in rate and
pitch and the display will show
concentric rings increasing
outward from the center as the
concentration of refrigerant
increases (see Fig. 7).
100%
A
Fig. 7: Alarm indication display
6. If an alarm occurs before a leak
source is indicated or confirmed,
the Automatic or Manual reset
may be used to silence the alarm
and reset the baseline sensitivi-
ty. This allows the user to move
through a given refrigerant con-
centration without alarm in order
to find a higher concentration
closer to or at the leak. Such reset

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Operating Instructions | CS LD 1.0 | 39 | en
can be repeated as many times as
necessary. Refer to Section 6.1.2
Automatic and Manual Reset Mo-
des for more details on resetting
the unit.
7. A suspected leak should always
be verified by resetting the unit
in fresh air by moving away
from source and back again.
6.3 Relative leak size
indication
The leak size indicator (rings)
remains off normally but once a
leak is detected, a number of rings
will be displayed. The number will
continue to increase or decrease
depending on the amount or con-
centration of refrigerant sensed.
The Leak Size Display is a relative
size indicator; i.e. 2 rings indicates
a larger concentration than 1 ring,
3 rings a larger concentration than
2, etc.
Because the CS LD 1.0 is a broad-
band detector, intended for use on
a very wide range of compounds,
it is not to be considered as a
measurement device. The sensiti-
vity to different compounds varies,
therefore the rings cannot reliably
be used to indicate a specific con-
centration or leak size.
6.4 Audio mute function
To silence or mute the audio beep
and alarm signal, press the Audio
ON/OFF button (See Fig 8a). The
display will show the speaker icon
muted (See Fig 8b). In the event of
an alarm, a "bell" icon (Fig 8c) will
be displayed along with the relative
leak size indicator. To restore the
audio sound, press the Audio ON/
OFF button again.
8a
8b
8c
Fig. 8: Audio Icons
iiA few seconds is required to
restore sound if the Audio ON/
OFF button is pressed in rapid
succession.
6.5 Leak tracing function
To enter the Leak Tracing Mode,
press the Graph button Item 7, Fig
1.1. This mode allows the user to
pinpoint hard to find small leaks.
The display “cursor” will move
from left to right tracking the sen-
sor output. The graph’s horizontal
axis (x-axis) represents a timeline
from 0 to 8 seconds; the verti-
cal axis (y-axis) indicates signal
change intensity.
When no refrigerant is sensed, the
baseline trace will be flat. While
searching, if refrigerant is sensed,

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the trace on the display will rise
up as the concentration increases,
and rise down if the concentration
decreases.
Because the display in this mode
is based on a time period, the pre-
vious leak level sensed during this
time will be displayed, thus hel-
ping the user to determine where
the maximum level of refrigerant is
present - thereby pinpointing the
source of the leak.
iiThe sensitivity level in this
mode will default to High, Re-
set Mode to Manual and Audio
to OFF; these settings cannot
be changed. To reset the graph
trace, press the Sensitivity
button; the reset arrow will
momentarily be shown. Once
reset, the trace will revert to
the baseline on the y-axis and
reset to the start on the x-axis.
Refer to Fig. 9 for an example
of leak tracing display.
M
100%
Fig. 9: Leak tracing display
6.6 Automatic shut-off
feature
The CS LD 1.0 includes an Auto
Shut-Off feature in order to preserve
battery life.
If the unit remains idle (i.e. no
alarm/change in sensor output) for a
period of 10 minutes, it will automa-
tically shut itself off.
Fig. 10: Auto shut off display

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Maintenance | CS LD 1.0 | 41 | en
30 seconds before shut-down the
display will switch to a countdown
timer with a flashing standby icon. If
the audible alarm is on, it will silence
during this countdown; if the unit
is in Audio OFF mode, the audible
alarm will switch ON and the unit will
beep during the countdown.
Any button press or alarm that oc-
curs will continuously reset the 10
minute internal timer.
7. Maintenance
7.1 Sensor Filter
!To ensure optimum sensor
performance and longevity, the
sensor filter should be replaced
when visibly dirty or when the
message screen in Fig. 12 is dis-
played. The CS LD 1.0 will keep
track of the number of hours of
usage and will advise the user
when it is time to replace the
filter.
Fig. 11: Check sensor filter message
display
iiThe warning depicted in Fig. 12
is displayed at power ON when
the CS LD 1.0 internal timer re-
gisters approximately 30 hours
of accumulated use.
7.1.1 Check Sensor Filter
message
When the ‘Check Sensor Filter’
message (Fig. 12) is displayed, the
user is directed to consult this ma-
nual for the following instructions.
It is possible to take one of two
actions at this time:
• Check and replace if necessary,
the filter.
• Postpone filter check until a
subsequent operation.
It is highly recommended to choo-
se the first option.

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When this screen appears, the only
control that will function (and the
only operation that is possible) is
the power button.
7.1.2 To Replace Filter
Unscrew filter tip as shown in Fig
13 to access the filter. The filter
is located in the threaded base of
the tip. It may be necessary to use
a pointed object like a paper clip
to remove the filter.
2 1
Fig. 12: Sensor components
1 Filter tip
2 Sensor filter
7.1.3 Filter Change
Confirmation
When Check Sensor Filter mes-
sage screen appears, pressing the
power button leads
to the screen shown in Fig. 14,
“Filter Change Confirmation".
Fig. 13: Filter change confirmation
display
Two options are now possible:
• If the filter was checked, and
replaced if necessary, press
the button beneath the icon.
The unit will begin the warm-up
operation, the internal timer is
reset, and normal operation may
resume.
• If the decision to postpone che-
cking the filter is made, press
the button beneath the icon.
The unit will begin the warm-up
operation and normal operati-
on may resume; HOWEVER the
internal timer is not reset and
when the CS LD 1.0 is powered
ON subsequently, the “Check
Sensor Filter” screen will reap-
pear and the decision tree must
be repeated.

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Maintenance | CS LD 1.0 | 43 | en
7.2 Sensor
The CS LD 1.0 is constantly che-
cking the sensor for the correct
feedback signal. If the sensor is
not fully inserted into the five-pin
socket, or if it is defective, the unit
cannot be properly conditioned
during the “Warm Up” mode. In
the event that the sensor is not
present, not properly connected,
or depleted, the “Check Sensor”
message screen pictured in Fig. 15
will appear.
Fig. 14: Check Sensor message display
Additionally, if the unit becomes
unstable during its operation, it is
an indication that the sensor may
be defective and requires replace-
ment.
7.2.1 Removing and reseating
the sensor
• Power OFF the unit.
• Remove the sensor assembly
by gently pulling the sensor
straight off the socket (see Fig.
16). Do not twist the sensor
while removing.
• Reseat the sensor by aligning
the keyway notch in the sensor
with the raised keyway on the
sensor socket holder (see Fig.
16).
!Do not force the sensor into the
socket. Misalignment can dama-
ge the sensor pins.
• Power on the unit and wait for
normal operation to resume.
• If the ‘Check Sensor’ message
re-appears after start up, the
sensor must be replaced.
7.2.2 Replacing the sensor
If reseating the sensor did not clear
the ‘Check Sensor’ message, then
it is necessary to obtain and install
a new sensor. Refer to Section 12
for the correct sensor part number.
• Ensure that the unit is powered
OFF.
• Remove the old sensor by
pulling the sensor straight off
the socket (see Fig. 16). Do not
twist the sensor while removing.

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1
2
Fig. 15: Sensor Components
1 Sensor
2 Socket holder
• Remove the new sensor (which
includes new tip and filter)
from its packaging and seat the
sensor by aligning the keyway
notch in the sensor with the
raised keyway on the sensor
socket holder (see Fig. 16).
!Do not force the sensor into the
socket. Misalignment can dama-
ge the sensor pins.
• Power on the unit and wait for
normal operation to resume.
iiWith a brand new replacement
sensor, or if the leak detector
has been out of use for an
extended period (30 days or
more) the following action is
strongly recommended.
➢Power on the unit and after
Warm up run with the sensitivi-
ty level in the high position for
several minutes before using.
This action will guarantee that
the sensor is fully conditioned
for maximum response to refri-
gerant.
7.3 Sensor Clearing
Message
In the event that the sensor be-
comes saturated with a very large
concentration of refrigerant, the
‘Sensor Clearing’ message, Fig.17,
is displayed. During this time,
while the CS LD 1.0 clears the
sensor, the unit will not function
optimally. Recovery is normally
less than 10 seconds.
100%
Fig. 16: Sensor clearing message display

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Maintenance | CS LD 1.0 | 45 | en
7.4 Charging the Li-Ion
Battery
➢The CS LD 1.0 uses a recharge-
able Li-Ion type battery.
!This internal battery is not user
replaceable. This battery is ra-
ted to last many years if proper-
ly maintained. Do not attempt to
replace battery. Please contact
Bosch Customer Service for any
issues related to the battery.
IF DAMAGED
Do not open the leak detector housing to access the
internal battery. This battery is not user replaceable.
HANDLE WITH CARE
CAUTION
LITHIUM ION RECHARGEABLE
BATTERY INSIDE
7.4.1 Battery Status
The CS LD 1.0 constantly monitors
the battery status and capacity is
indicated in the upper right of the
display as both a graphic and a per-
centage.
A fully charged battery should pro-
vide roughly 8 hours of continuous
operation.
The battery icon will change to red
when charge drops to or below
15% (Fig. 18). This is an indication
that it requires recharging.
15%
A
Fig. 17: Low Battery status display
7.4.2 Charging the internal
battery
Connect the micro-USB connector
cable to the charging port located
on the base of the leak detector,
refer to Fig. 19. Connect the other
end of the cable to the 5V DC 1.0A
wall charger provided, and con-
nect to a mains power supply.

F 002 DG9 H12 | Bosch Automotive Service Solutions GmbH2021-04-08
46 | CS LD 1.0 | Maintenance
en |
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Fig. 18: Charging Leak detector
1. Charging port
iiAlways use a locally approved
5V DC charger with an output
of at least 1.0A.
It is also possible to use a 12V DC
power source if the USB adapter
outputs a minimum 1.0A.
• With the leak detector off and
the charger connected, the
screen will display charging
status as shown in Fig. 20. Char-
ge the leak detector until the
display shows 100%.
• Charging time to full capacity is
approximately 3 hours.
50%
Fig. 19: Charging status icon (power off)
7.4.3 Operating the leak
detector with the charger
connected
It is possible to operate the
leak detector with the charger
connected.
• Connect the charger as descri-
bed in section 7.4.2 and turn
on the leak detector.
• With the leak detector on and
the charger connected the dis-
play will indicate charging and
progress with the lightning bolt
symbol in the upper right corner
of the screen, see Fig. 21.