Kanmed WarmCloud OT-600 User manual

Technical Manual
KANMED WarmCloud, OT600
Art no OT-600-060/1
2008-02-26
0413
Manufactured by:
KANMED AB
Gårdsfogdevägen 18B
SE-168 66 Bromma
Sweden
Tel [phone] Fax + 46 8 56480639
E-Mail [email protected]
Web www.KANMED.se
This manual is valid for KANMED WarmCloud
Warmers with serial number 00200 and
above, and with software version 9914 or
higher.
Subject to changes.
Warning
Incorrect use and service
of heating equipment can
cause serious patient
injury.
Please read this manual
carefully

Technical manual OT-600-060/1
Page 2
CONTENTS
TECHNICAL MANUAL ........................................................................................................................................... 4
1. INTENDED USE ...................................................................................................................................................... 4
2. EXPLANATION OF SYMBOLS USED ........................................................................................................................ 4
3. SAFETY INFORMATION........................................................................................................................................... 5
Warnings........................................................................................................................................................... 5
4. CLEANING,CHECKS BEFORE USE AND MAINTENANCE ....................................................................................... 6
Cleaning............................................................................................................................................................. 6
Maintenance.................................................................................................................................................... 6
5. ACCESSORIES AND SPARE PARTS......................................................................................................................... 6
6. TECHNICAL INFORMATION .................................................................................................................................... 6
Safety systems .............................................................................................................................................. 6
Monitoring of the mattress pressure ............................................................................................... 7
Monitoring of the fans............................................................................................................................... 7
Monitoring of the temperature regulation.................................................................................... 7
7. TECHNICAL DATA .................................................................................................................................................. 7
8. TROUBLE SHOOTING AND ERROR CODES ........................................................................................................... 8
9. ANNUAL CHECK OF MAIN UNIT .......................................................................................................................... 10
10. SERVICE INFORMATION ........................................................................................................................... 11
KEY COMPONENTS ........................................................................................................................................ 11
DISMANTLE THE OT600 .............................................................................................................................. 12
REMOVING THE MAIN PC-BOARD............................................................................................................ 12
REMOVING THE FAN COVER...................................................................................................................... 12
SEPARATING COMPRESSOR- AND FAN/HEATER ASSEMBLY......................................................... 13
PICTURES.......................................................................................................................................................... 13
11. FULL FUNCTION CHECK OF MAIN UNIT ........................................................................................................... 14
Change of hose seal...................................................................................................................................... 18
12. WARRANTY CONDITIONS.................................................................................................................................. 18
13. EMC GUIDELINES ............................................................................................................................................. 19
14. TEST PROTOCOL,FULL FUNCTION CHECK...................................................................................................... 22
15. TEST PROTOCOL,ANNUAL FUNCTION CHECK................................................................................................. 24

Technical manual OT-600-060/1
Page 3
KANMED WarmCloud User Guide - Quick instruction
Caution! Incorrect use of heating equipment can cause serious injury. The user manual must be read
completely before use.
Preparation
Place the Warm Air Mattress on the Operating table. If the mattress has fixating straps then tie them to
the side rail with a reliable knot. Do not tighten down the mattress too hard. The air hoses are
connected to the air inlets and the Velcro straps are tightened securely. If the mattress has cushions,
place it under the part of the patient located closest to the air inlets. Connect the Hand Controller to the
Main Unit. Connect the power cable to an outlet with protective grounding. Switch on the Mains Power
switch, located at the power intake on the Main Unit. Observe that a self test is performed.
Note:Alarm code PO LOS will be received after mains power has been reconnected. This is normal!
Press the Alarm button to reset the alarm. The system is now ready for operation.
Start
Press the button on the Hand Controller to start. Always attend the patient when inflating the
mattress.
Correct STOP procedure for the Control Unit
Reduce the pressure to 0 alternatively press the start/standby button for 2 seconds.
Switch of the Control Unit before you pull out the power cable.
Adjusting the temperature
Preset temperature is 37°C. The average air temperature can be set between 20°C (no warming) and
42°C by pressing the [+] or [-] buttons until desired temperature is displayed. 42°C is the
recommended start temperature and should be adjusted according to the patient’s needs.
Note: When temperatures above 38°C or below 35°C are selected, the unit will alert the operator by an
audio signal and flashing digits as a reminder that settings that deviate from body temperature are
being selected.
Caution! It is highly recommended to monitor the patient’s actual core temperature with a reliable
method.
Adjusting the pressure
Pre Set pressure is 30 mb. Make sure that the patient is not “bottoming out”. This will block the airflow
and reduce the warming efficiency. Check by inserting your hand between the Mattress and the
operating table under the heaviest part of the patient. Very important with heavy patients. If required,
increase the pressure by 5 or 10 mb. Ensure that there are no wrinkled materials under the patient.
Safety information
Reduced Blood Flow Parts of the body that have reduced or no blood flow should not be warmed. Reduce the
temperature setting to lowest value well ahead of a blood vessel shut off.
Operating table Safety
Straps
When the patient is fixated by the safety straps (recommended standard procedure), first
inflate the Mattress to ensure proper tension.
Patient Stability
The Mattress may fill or empty unevenly, therefore you must observe the patient carefully
when you are inflating or deflating the Mattress. Be extra careful, and always make sure the
patient is adequately fixed whenever tilting the operating table out of horizontal position. If
the mattress is rolled in under the patient after the patient has been put on the operating
table, be extra cautious during inflation!
Single Patient Use
Mattress Reuse will cause leakage and increased infection risk and void product liability.
Risk of Fire
Protect the Mattress from laser, electrosurgical active knives and naked flame. Be
particularly cautious after use of flammable disinfectants (e.g. alcohol).
Error Codes
In case an error is detected by the system an acoustic alarm is received and a code is
displayed on the hand controller as “Err XXX”.
The meaning of this error code is found on the rear of the hand controller. Full information is
found in the user manual.

Technical manual OT-600-060/1
Page 4
TECHNICAL MANUAL
1. Intended Use
The KANMED WarmCloud, a pressure relieving warm air Mattress, is designed to be used pre, per and
post operatively. It must be used according to this manual. The system is intended to reduce the risk of
hypothermia and pressure sores. It is not intended for home use. It may only be used by qualified
medical staff that has undergone proper product training according to the hospital routine.
Only KANMED Warm-Air Mattresses can be used with the system. All other uses will risk the
function of the system and patient safety.
Latest version of the user manual and information about accessories can be found on www.KANMED.se
2. Explanation of symbols used
Start/stop button on Hand Controller
I ON (Main Unit power on switch)
O OFF (Main Unit power off switch)
Alarm Silence
Please read the instruction manual
Risk of explosion in the presence of inflammable gases.
Safety class BF, Defibrillator safe
Disposable (single patient use), shall not be reused.
Fulfils MDD93/42 ECC and EMC directive 89/336/EEC
+ Increase temperature / Increase pressure
- Decrease temperature/ Decrease pressure
ALARM
2
0413

Technical manual OT-600-060/1
Page 5
3. Safety information
Warnings
•To ensure optimal performance and to prevent accidental misuse the user manual must be read
completely.
•If you feel that the KANMED WarmCloud is not operating properly, then you must ask a qualified
technician for advice.
•Single Patient Use Mattress: Reuse will cause leakage because of weakening of the plastic
material and increase infection risk and void product liability.
•Mattress Fixation straps. If the mattress has fixation straps then they must be tightened to the side
rails of the OR table with a reliable knot.
•Operating table Safety Straps: When the patient is fixated by the safety straps (recommended
standard procedure), first inflate Mattress to ensure proper tension.
•Patient Stability: The Mattress may fill or empty unevenly, therefore you must observe the patient
carefully when you are inflating or deflating the Mattress. Be extra careful, and always make sure
the patient is adequately fixed whenever tilting the operating table out of horizontal position. If the
mattress is rolled in under the patient after the patient has been placed on the operating table, be
extra cautious during inflation!
•Compatibility: Only use KANMED air Mattress with KANMED Main Unit to assure performance and
safety.
•Reduced Blood Flow: Parts of the body having reduced or no blood flow must not be warmed.
Reduce the temperature setting to lowest value well ahead of a blood vessel shut off.
•Risk of Fire. Protect the Mattress from laser, electrosurgical active knives and naked flame. Be
particularly cautious after use of flammable disinfectants (e.g. alcohol).
•Skin damage. Ensure that there are no wrinkled materials under the patient.
•MRI cameras: The system is not designed or tested for use with MRI cameras.
•The system must always be connected to a mains outlet with proper protective grounding.
•Patient weight
Recommended lower weight limit 10 kg
Recommended upper weight limit 150 kg
Read section 5 for more information
Cautions
•Be careful not to puncture the Mattress.
•If for instance the patients head is mechanically fixated to the operating table then extra attention
must be paid. The patient’s body will drop about 5 cm if the mattress is deflated.
•If patient stability is vital for the operation, carefully evaluate the risk/benefit involved in using the
system, with respect to the risk of involuntary deflation of the mattress.
•Remember to adjust the height of the arm supports after inflating the mattress.
•If the unit alarms or it has received mechanical damage, it should be examined by a technician. See
section Trouble Shooting and Error Codes for advice.
•The KANMED WarmCloud is a powerful heating device! Always monitor the patient’s actual body
temperature with a reliable method. Be particularly observant on patients with low body mass
(small children, elderly etc.), and use lower temperature settings on this patient category.
•Observe that the set temperature is an average air-temperature value and may differ somewhat
from the actual mattress temperature, especially if the patient is covered with blankets.
•For Warm-Air mattresses that do not have an integrated cushion, always place a cushion under the
part of the body located closest to the air inlets to avoid hot spots, particularly important when
running the system at maximum temperature setting or when using a short mattress.
•Use cushions under the patient’s calves to reduce the pressure under the heels.
•EMC. MEDICAL ELECTRICAL EQUIPMENT needs special precautions regarding EMC, and needs to be
installed and put into service according to the EMC information which is provided on the KANMED
home page under downloads.

Technical manual OT-600-060/1
Page 6
4. Cleaning, Checks before use and Maintenance
Cleaning
Unplug the power cord before cleaning. Clean the Main Unit and Hand Controller as per the hospital
instructions for medical technical equipment.
The Mattress is a disposable item and shall not be reused.
Checks before use
Check that all parts are clean and in good condition. Check that the unit performs a self test at start. If
Error Codes appear and cannot be eliminated with the suggestions given in section 10 then they should
be notified to Technical staff unless they are of type A (See Trouble Shooting and error codes section
10). Note: If the Main Unit or Hand Controller has received mechanical damage, it should always be
checked and correct system function verified by technical staff.
Maintenance
KANMED WarmCloud does not require any special maintenance apart from what is described in the
technical section of this manual.
The soft part of the air hose Mattress connection needs to be changed if worn. If the air hoses are worn
or leaking they must also be changed.
5. Accessories and spare parts
Always check with your dealer or www.KANMED.se for the latest information.
Article nr. Product Comment
OT-600-001 KANMED WarmCloud Complete system with standard accessories.
OT-600-002 Hand Controller With rubber edges and 3m cable
OT-600-004 Accessory strap Transport band with elastic strap.
OT-600-220 Warm-Air Mattress,
Standard
Single-Use Mattress, Length 200 cm, Width 50 cm. Delivered in box
of 10 pcs
OT-600-222 Warm-Air Mattress, Wide Single-Use Mattress with ties, Length 200 cm, Width 60 cm.
Delivered in box of 10 pcs
OT-600-211 Warm-Air Mattress, Small
For “leg-up” positions and for Children
Single-Use Mattress with ties, Length 100 cm, Width 50 cm.
Delivered in box of 10 pcs
OT-600-701 Hose set complete Consumable
OT-600-702 Hose seal (2 pcs) Consumable
OT-600-704 Fuses (2 pcs) T 6.3 A L 250V, 5x20 mm
OT-600-705 Cable 3 m for Hand Unit Spare part, complete with connectors
OT-600-070 Manual English Manual.
OT-600-060 Manual Service manual English.
6. Technical information
Safety systems
KANMED WarmCloud OT600 is equipped with several safety functions to prevent dangerous situations.
If a fault is detected an alarm will sound and an error code will appear on the Hand Controller.
Depending on the seriousness of the error the system will continue to function normally, enter a safe
mode or shut down. See “Error Codes” later.
An alarm of less seriousness will, if still persisting, reappear after 10 minutes.
A serious fault in the warming system will shut down the warming but the pressure regulation of the
mattress will continue to function.
The green lamp over pressure and temperature displays indicates the status of the regulating circuits.
A steady glow indicates that set values have been achieved. A blinking lamp indicates that the unit is
working on reaching set values.

Technical manual OT-600-060/1
Page 7
Monitoring of the mattress pressure
The system will alarm if the pressure deviates from set value. If a compressor failure (or big leak)
prevents the set pressure from being reached then the fans and heating will not start.
If the electronic pressure control fails to stop the compressor then a mechanical over pressure valve will
prevent the pressure from exceeding 75mb. A sudden pressure drop (puncture or loose hose) will
create an alarm and stop the system.
Monitoring of the fans
The system uses two high quality silent fans that periodically changes the air direction in order to
achieve an even temperature distribution under the patient. In case one fan stops the system will alarm
and enter into “safe mode” (See Error code 009). Change of temperature must be done after careful
consideration of the fact that the air is constantly going in the same direction (“hot-spot” hazard).
Monitoring of the temperature regulation
The electronic temperature sensors (one in each hose connection at the Main Unit) will alarm if the air
temperature deviates from selected value. Mean air temperature and peak temperature values are
monitored. The system is also equipped with 2 capillary thermostats that will cut the heating if the
electronics should fail. As a third independent passive patient protection the mattress is equipped with
a temperature sensitive weak point that will puncture the mattress if the temperature should pass
critical values.
7. Technical Data
Voltage 220 - 240 VAC 50 - 60 Hz
Power consumption 150 VA (Average under normal conditions), 700 VA (Peak value)
Inflation time About 90 sec with 200 cm Mattress.
Warming up time About 4 minutes from room temperature (18-20°C).
Measurements Main Unit: 310 x 295 x 370 mm
Length of Air Hoses: 1500 mm
Hand Unit: 115 x 145 x 27 mm
Length of cable: 3000 mm
Weight Main Unit: About 27 kg incl. wheelbase. Hand Unit about 800 g
Transport packing in plywood box: About 34 kg
Temperature selection 20°C - 42°C, step of 1°C Precision +- 1°C
Pressure selection 0 – 60 mb. Step of 5 mb. Precision +- 5mb.
Mechanical overpressure valve release at 75 mb
Function supervision Audio and visual alert. Error codes displayed on the hand unit with a code key on
the back of the hand controller.
Environmental data +15°C to +35°C during operation, less than 90% RH
0°C to +40°C during storage, non-condensing.
- 40°C to +50°C (max 56°C/30 min) during transport, non-condensing.
Modifications Any modifications on the control unit, hand unit, hoses and the mattress will void
KANMED’s responsibilities totally and are not allowed without the written consent
of KANMED.
Creating Systems Any person connecting the WarmCloud to any other systems mains socket may
have created a “system” according to IEC 60601-1, and must be qualified to
evaluate any consequences that may harm staff, patient and equipment.

Technical manual OT-600-060/1
Page 8
8. Trouble Shooting and Error codes
Error levels
A) Warning => Continued operation B) Serious error => Reduced heating
C) Major error => Heater OFF, Pressure ON D) Fatal error => System OFF
Alarm Code
and Level Description / Systems Actions
Err 001
C
High reading on temp sensor 1. Too high value detected. Probably sensor error or too
warm heating element. Can be caused by blocked air hose or channel in Mattress.
System actions: The heating will stop and the Hand Unit shows Err 001. After resetting the
alarm the temperature will display “---” and the alarm lamp will blink until the system is
stopped. This alarm is not active during the first 60 seconds after start.
User action required: Reset the alarm. Examine if the airflow is blocked by the patient
bottoming out, a blocked air hose or similar. If there is a natural cause for this alarm, correct
the condition and the system may be restarted. Otherwise contact a qualified technician to
examine the system.
Err 002
C
High reading on temp sensor 2. Too high value detected. Probably sensor error or too
warm heating element. Can be caused by blocked air hose or channel in Mattress.
System actions: The heating will stop and the Hand Unit shows Err 002. After resetting the
alarm the temperature will display “---” and the alarm lamp will blink until the system is
stopped. This alarm is not active during the first 60 seconds after start.
User action required: Reset the alarm. Examine if the airflow is blocked by the patient
bottoming out, a blocked air hose or similar. If there is a natural cause for this alarm, correct
condition and the system may be restarted. Otherwise contact a qualified technician to
examine the system.
Err 003
C
Air temperature exceeds safe value. The measured air temperature exceeds maximum
permitted value for more than 65 seconds. Can be caused by a blocked air channel or hose.
System actions: The alarm will switch off the warming and the display will show
Err 003. The alarm lamp will blink until the system is stopped. This alarm is not active during
the first 60 seconds after start.
User action required: Reset the alarm. Examine if the airflow is blocked by the patient
bottoming out, a blocked air hose or similar. If there is a natural cause for this alarm, correct
the condition and the system may be restarted. Otherwise contact a qualified technician to
examine the system.
Err 004
A
Set temp not reached, slow warming. The selected value has not been reached in 10
minutes. NOTE that this alarm may trigger if the unit is started in cold surroundings.
System actions: Err 004 will be displayed. When the alarm is silenced the lamp will stop
blinking and the unit will continue. If the alarm condition still exists after 10 minutes the alarm
will return.
User action required: Reset the alarm. Observe if the error returns, if it does, contact a
qualified technician to examine the system.
Err 005
A
Over pressure, measured air pressure exceeds selected value with more than 10mb.
Probably a fault on the electronic pressure relief valve or electronic error.
System actions: Err 005 is displayed. When the alarm is silenced the lamp will stop blinking
and the unit will continue. If the alarm situation still exists after 10 minutes the alarm will
come back.
User action required: Reset the alarm. Observe if the error returns, if it does, contact a
qualified technician to examine the system.
Err 006
C
Air leakage. The compressor is working continuously for more than 3 minutes. Probably a
major air leakage in the Mattress connection, the Mattress or the hoses.
System actions: Err 006 is displayed. If the system is in the phase of starting up a new
Mattress then it will go to stand by after silencing the alarm. If the situation occurs during
normal use the heating will be shut down but the compressor will continue to keep the
pressure. If the alarm condition still exists after 10 minutes the alarm will come back.
User action required: Reset the alarm. Examine the air hose connection. If there is a natural
cause for this alarm, correct the condition and the system may be restarted. Otherwise contact
a qualified technician to examine the system.

Technical manual OT-600-060/1
Page 9
Err 007
A
Low air pressure. The compressor is working more than 50% of the time. Probably an air
leakage in the Mattress connection, the Mattress or the hoses.
System actions: Err 007 is displayed. When the alarm is silenced the lamp will stop blinking
and the unit will continue. The alarm will come back if the error exists during the next alarm
period. With a bigger air leak the alarm will come more often.
User action required: Reset the alarm. Examine the air hose connections. If there is a
natural cause for this alarm, correct the condition and continue using the system. Otherwise
contact a qualified technician to examine the system.
Err 008
D
Sudden drop of pressure. The Mattress pressure is below 4mb. Probably puncture or a hose
has come off.
System actions: Err 008 is displayed. The warming stops and the unit stops.
User action required: Reset the alarm. Examine the air hose connection. If there is a natural
cause for this alarm, correct the condition and the system may be restarted. Otherwise contact
a qualified technician to examine the system.
Err 011
C
Low reading on temp sensor 1. Too low value detected, probably sensor or electronic error.
System actions: The heating will stop and the Hand Unit shows Err 011. After resetting the
alarm the temperature will display “---” and the alarm lamp will blink until the system is
stopped. This alarm is not active during the first 60 seconds.
User action required: Reset the alarm, contact a qualified technician to examine the system.
Err 012
C
Low reading on temp sensor 2. Too low value detected, probably sensor electronic error.
System actions: The heating will stop and the Hand Controller shows Err 012. After resetting
the alarm the temperature will display “---” and the alarm lamp will blink until the system is
stopped. This alarm is not active during the first 60 seconds after start.
User action required: Reset the alarm, contact a qualified technician to examine the system.
Err 014
A
Set temp not reached, slow cooling. The selected value has not been reached in 10
minutes. NOTE this alarm is only activated for temperature settings from 31ºC and above.
System actions: Err 014 will be displayed. When the alarm is silenced the lamp will stop
blinking and the unit will continue. If the alarm situation still exists after 10 minutes the alarm
will return.
User action required: Reset the alarm. Observe if the error returns, if it does, contact a
qualified technician to examine the system.
SAFE
B
Fan error. One fan is not working.
System actions: SAFE is displayed. When the alarm is silenced the unit will continue to
operate with only one fan.
User action required: Reset the alarm. The system can be temporarily used for the duration
of the present procedure. You can still change the pressure and temperature values. Change of
temperature must be done after careful consideration of the fact that the air is constantly
going in the same direction (risk for “hot spots”). After the present procedure is concluded,
contact a qualified technician to examine the system.
PO LOS Power Lost. If mains power is lost during operation, the system will sound an acoustic alarm.
When power is restored the display shows PO LOS. The alarm need to be reset and the system
restarted.
Communication Lost: If the communication with the hand controller is lost during operation,
the system will sound an intermittent acoustic alarm. When communication is restored the
display shows PO LOS. The alarm need to be reset and the system restarted.

Technical manual OT-600-060/1
Page 10
9. Annual check of Main Unit
The system must be checked annually by a qualified technician. The following shall then be tested:
•Visual control of the Main Unit and Hand Controller as well as all hoses and cables.
•Complete electrical safety test.
•Check that the main unit is ”air tight” i.e. the compressor is working less than 10% of the time.
•Check of safety functions as per the list below.
a) Normal start and running.
Connect a standard Mattress to the unit. Connect power cable and Hand Unit. Switch on the
power switch at the Main Unit and note that its green power indicating lamp is lit, that all lamps
on the Hand Controller are lit and that an alarm sounds for about 2 seconds. Start the system
with the start button on the Hand Controller. The default values are +37ºC and 30 mb. Listen
and note that the fan starts once the compressor has inflated the Mattress. Listen and note that
change of air direction takes place every 30 seconds. Listen for unusual fan noise.
b) When the system is running normally disconnect the power by pulling out the power cable. A
acoustic power alarm will be received. Reconnect the power. An alarm shall now sound from
the Hand Unit, and PO LOS is displayed. Reset the alarm.
c) Hand Controller connection.
Start the system and disconnect the cable to the Hand Controller. An intermittent acoustic alarm
will sound and the system shall stop after about 5 seconds. Reconnect the hand controller and the
system will alarm and display PO LOS. Reset the alarm.
d) Safe pressure / temperature regulation.
Start the system. Set the temperature to +36ºC and the pressure to 60 mb. Step up the
temperature to 42ºC and note the pressure is stepped down to 35 mb.
e) Control of the air (mattress) temperature
With a mattress connected, start the system with 42ºC & 30 mb. Place an accurate
thermometer/probe, preferably an FLUKE 52 II, in good contact with the air stream at the centre
of the mattress. Place a piece of insulating material on top of the probe to ensure good contact
with the mattress surface. Cover the whole mattress with a sheet. The system should operate >
10 min. with the system in thermal balance (the green temperature indicator permanently lit)
before any reading is done. The received temperature should read set temperature ± 1ºC
f) Check of error code 008, sudden drop of pressure.
With the system running, disconnect one of the air hoses. Note that Err 008 is shown and that
the unit goes to stand by. Reset the alarm.
g) Check of error code 006, Air leakage
Start the system without a Mattress connected. Note that the unit alarms with Err 006 after
about 4 minutes and goes to Stand by. Reset the alarm.
h) Correct stop of the system.
Start the system and reduce the pressure to 0 mb. Note that the air valve starts releasing the
pressure. The display will show “h” + the number of running hours, then the software version of
the Main Unit (CP) and last the software version of the Hand Controller (PP)
i) Check of pressure
Connect a pressure measuring device at the mattress connection as well as a mattress- Check
that the measured pressure is within +- 5 mb

Technical manual OT-600-060/1
Page 11
10. SERVICE INFORMATION
Modifications
Any modifications on the control unit, control unit electronics or the air mattress will void KANMED’s
responsibilities totally and are not allowed without the written consent of KANMED
For a general description of the WarmCloud and how to verify that it is functioning properly we refer to
the user manual. In case you do not have one it can be downloaded from internet in several languages.
Se www.KANMED.se
This service manual describes the basic functions of the WarmCloud and how do determine faults and
do smaller repairs.
KANMED’s service policy states that only KANMED authorised service points may carry our repairs on
the main PCB.
Instead we ask you to make full use of our PCB exchange program because this ensures the delivery of
a tested and calibrated replacement PCB with 3 months warranty.
KEY COMPONENTS
1) Pressure sensor
2) Temperature sensor (x2)
3) Thermostat (x2)
4) Heating element (x2)
5) Circulation fan (x2)
6) Electrical over pressure valve
7) Compressor
8) Mechanical over pressure valve
The main PCB interfaces and controls the key components. No calibration or PCB repairs are to be done
(PCB, and key component replacement only).
2
K
A
B
1
4
3
5
7 6
+
-
+
-
Hand Unit
8
Main Unit
Alarm

Technical manual OT-600-060/1
Page 12
Electrical diagrams HE 040223 and Mechanical Drawings1340-100, 1340-101, 1340-102
1340-110, 1340-201, 1340-401 can be made available upon request.
DISMANTLE THE OT600
Tools required:
•Torx keys T20 and T30
•10 mm spanner
a) Remove the air hoses and the Hand Controller
b) Place the unit in vertical position
c) Remove the wheel plate by removing the two T30/M6 screws.
d) Refit the two T30/M6 screws in order to secure the internal chassis.
e) Carefully break the bonding between the rubber frame and the casing. There is a risk that the rubber
frame breaks and consequently a new one must be ordered.
f) Remove the two T30/M6 and the six T20/M4 screws that holds the front plate (and rubber frame).
g) Remove the front plate (mind the short earth cable to the potential stud).
h) Remove the earth cable from the potential stud (using a 10 mm spanner).
i) Place the unit back in horizontal position
j) Remove the two T30/M6 screws that secures the internal chassis
k) Gently pull the chassis out of the casing.
Assemble in reversed order. Re-bond the rubber frame with Elastosil A07 Silicone (Wacker).
REMOVING THE MAIN PC-BOARD
Tools required:
•Torx keys T10
Note: Make shure to be properly ESD protected when working with the electronics.
a) Remove the four power connectors for fan/heater, compressor, over pressure valve and mains
power. Make note on what connector goes where.
b) Gently remove the four signal connector for the alarm card, the two temp sensors and the hand
controller. Make note on what connector goes where.
d) Gently remove the air hose from the pressure sensor.
e) Remove the seven T10/M3 screws that hold the PC-board.
Assemble in reversed order.
REMOVING THE FAN COVER
Tools required:
•Torx keys T20
•Cutting plier
a) Cut loose any cable ties that obstructs five of the twenty T20/M4 screws that secure the fan housing.
Loosen the screws and remove the cover and silicon gasket.
Note: when assembling the housing, make sure the flange is straight. Tighten all twenty screws
crosswise to the same torque (0.6 - 0.8 Nm).

Technical manual OT-600-060/1
Page 13
SEPARATING COMPRESSOR- AND FAN/HEATER ASSEMBLY
Tools required:
•Torx keys T10 and T20
•Cutting pliers
•7 mm spanner
a) Cut loose the cable ties for the hand controller cable, for the electric overpressure valve, the
compressor cables and the 4 mm silicone tube. Cut lose the tie that secures the 15 mm silicone hose.
b) Disconnect the compressor by separating the two cable connectors.
c) Remove the seven earth cables from the common earth point (7 mm nut).
d) Remove the mains inlet (two T10), disconnect the mains cables from the inlet.
e) Carefully remove the cable connector on the alarm board.
f) Remove one end of the 15 mm silicone air tube.
g) Remove the eight T20 screws that hold the air silencers from the front plate (mind the rubber lined
washers).
h) Remove the three T20 screws from the bottom / back, and the two T20 screws from the outer / top
of the assembly.
i) Gently separate the compressor assembly from the fan/heater assembly. Mind the cables!
Assemble in reversed order. Re-fit the cable ties. Make sure the gaskets are correct positioned and that
the rubber lined washers are fitted on the eight frontal T20 screws.
PICTURES
Pulling the chassis out of the casing. The
mechanical over pressure valve is visible in the
bottom of the front side.
Chassis, left side with the main PCB and the
compressor.
Chassis, right side. The electrical over pressure
valve visible in the bottom of the assembly. Removing the compressor air filter

Technical manual OT-600-060/1
Page 14
Removing the main PC-board Fan cover removed
Compressor assembly and fan/heater assembly Heater element and fan securing screws.
11. Full function check of Main Unit
GENERAL
•This procedure and corresponding protocol are to be used during a full function check of the
KANMED WarmCloud OT600 system.
•If nothing else is stated, the default setting of 37ºC and 30 mb. are presumed to be used during
operation of the system.
•The main PCB has two LED indicators that are useful to observe. The red LED indicates that the
computer has activated the heater elements. During the initial heating phase, it should be lit 80-
100% of the time, and when the system is in thermal balance (after more than 10 minutes of
operation), the indicator should be flashing with approximately 2 Hz. The green LED indicates that
the computer has activated the compressor.
PREPARATION
a) Remove the casing of the main unit, and perform an internal ocular inspection of the chassis.
b) Refit the air hoses and the hand controller.
c) Connect the main unit to an OT600-220 standard mattress.
d) The pressure is measured with an accurate manometer (DIGITRON P200M or similar). The
temperature is measured with a FLUKE 52 II (or similar thermometer). Power consumption with an
ampere meter.
e) Electric safety test are performed according to standard for medical technical equipment, IEC 601.1
Class II type B.

Technical manual OT-600-060/1
Page 15
TEST DESCRIPTION
1) Electrical safety test to be performed.
Insulation resistance and earth current etc. are measured.
2) The system can be started and set to stand-by with the Hand control unit.
When the main switch are set to position “l”, the green indicator on the front of the main unit are lit,
and all indicators and digits on the hand control unit are activated. An audio alarm is received during 2
sec. Start the system by pressing operate / stby button on the hand unit. The system will start with the
default setting of 37ºC and 30 mb. Observe that the fans start operating after the mattress has been air
filled to near set pressure. Observe that alternation between the two fans occur every 30 sec. Listen for
any un-natural fan noise. Set the system in standby pressing the operate / stby button again
3) Pressure and temperature can be set within permitted range.
a) Start the system; adjust temperature to 36ºC and the pressure to 60 mb. Increase the temperature
to 42ºC and observe that the pressure is reduced in steps, down to 35 mb.
b) Adjust the pressure to 0 mb, observe that the electrical over pressure valve operates and that the
mattress are evacuated.
c) The display will display the accumulated hours of operation (initially h00 000).
d) The display will display the main unit SW version (presently CP9 914).
e) The display will display the hand unit SW version (presently PP9 912).
f) Gently remove the pressure hose from the pressure sensor on the main PCB and start the system.
Set the system to stby after 2 min. and observe that the mechanical overpressure valve is operating
(releasing air when the internal pressure reaches more than 75 mb). Fit the air hose back in place.
4) The system goes to standby if the hand unit is removed and an alarm is received.
Start the system, remove the plug to the hand unit. A pulsating audio alarm shall be received and the
system goes to stby.
5) Alarm is received if power is removed during operation.
Start the system. Remove the mains power. A constant audio alarm shall be received.
6) Control of supervision and alarm functions.
Check of sudden pressure drop supervision.
a) Start the system. After > 2 minutes, remove one of the air hoses from the mattress. Observe that
Err 008 is received and that the system goes to stand by when the reset button is pushed.
Check of the pressure supervision
b) Start the system with only one air hose connected to the mattress. Observe that Err 006 is received
after 4 minutes and that the system goes to stand by when the reset button is pushed.
Control of the over-temperature supervision
c) Block the air circulation by putting the air hose in a plastic bag before connecting it to the mattress.
Start the system. Adjust temperature to 42ºC and the pressure to 30 mb. Observe that Err 001, 002 or
003 is received within approximately 10 minutes. When the alarm reset button is pushed, the
temperature display shows “---“ and the red LED on the main PCB does not light (heating function Off).
Remove the plastic bag and reconnect the air hose.
Control of the under-temperature supervision
d) Remove one of the flat cable connectors from the bottom side on one of the thermostats. Start the
system. Adjust temperature to 42ºC and the pressure to 30 mb. Observe that the red LED on the main
PCB is permanently lit and that Err 004 is received within 10 min. If the alarm reset button is pushed,
the alarm should return within 10 minutes. Re-connect the cable connector.
Check of temperature sensor supervision.
e) Remove the left connector (j5) to the temperature sensor on the main PCB. Start the system (37ºC
& 30 mb). Observe that Err 011 is received within approximately 2 min. and the red LED on main PCB
goes off (no heating). When the alarm reset button is pushed, the temperature display will show “---“,
the alarm indicator flash and the system will continue operating without heating.
f) Short circuit the left connector (j5) on the main PCB. Start the system (37ºC & 30 mb). Observe that
Err 001 is received within approximately 2 min. and the red LED on main PCB goes off (no heating).
When the alarm reset button is pushed, the temperature display will show “---“, the alarm indicator
flash and the system will continue operating without heating.

Technical manual OT-600-060/1
Page 16
g) Restore the left sensor (j5). Remove the right connector (j6) to the temperature sensor on the main
PCB. Start the system (37ºC & 30 mb). Observe that Err 012 is received within approximately 2 min.
and the red LED on main PCB goes off (no heating). When the alarm reset button is pushed, the
temperature display will show “---“, the alarm indicator flash and the system will continue operating
without heating.
h) Short circuit the right connector (j6) on the main PCB. Start the system (37ºC & 30 mb). Observe
that Err 002 is received within approximately 2 min. and the red LED on main PCB goes off (no
heating). When the alarm reset button is pushed, the temperature display will show “---“, the alarm
indicator flash and the system will continue operating without heating.
Restore the sensor connectors.
Check of the fan supervision.
i) Disconnect one fans by removing the flat cable connector no. 3 or 4 (blue cables) from the terminal
block. Start the system with 42ºC & 30 mb. Observe that Err SAFE is received within 10 min. and that
the system starts operate in SAFE mode (the remaining fan operates 100% of the time). NOTE! The
system must be in thermal balance (even temperature on both channels) in order for the system to
select the functioning fan. Let the system be switched off for at least 30 min. before this test is carried
out.
7) Measure the power consumption at cold start
Connect a power meter or an ampere meter on the power feed. Start the system with 42ºC & 30 mb.
The system should consume 550W < P < 800W, (2.4 < i < - 3.5 A at 230 VAC) with max. heating and
the compressor operating.
8) Check for air leakage.
With a mattress properly connected, the compressor should operate <5% of the time.
9) Check of pressure sensor calibration
Connect a manometer, for example via a thin metal tube inserted at the mattress connectors. The small
leakage that will occur is compensated by the compressor. Start the system with 37ºC & 35 mb. The
manometer should read 35 mb ± 5 mb.
10) Control of the air (mattress) temperature
With a mattress connected, start the system with 42ºC & 30 mb. Place an accurate thermometer/probe,
preferably an FLUKE 52 II, in good contact with the air stream at the centre of the mattress. Place a
piece of insulating material on top of the probe to ensure good contact with the mattress surface. Cover
the whole mattress with a sheet. The system should operate > 10 min. with the system in thermal
balance (the green temperature indicator permanently lit) before any reading is done. The received
temperature should read set temperature ± 1ºC

Technical manual OT-600-060/1
Page 17
Change of air hose
The hoses should only be detached in case you have to replace them due to damages or
leakage. It should not be removed in between the cases, as it should be stored with the
hoses fitted to the control unit.
The hose locking device is turned anti
clockwise until it comes off. Pull off
the old hose. Apply a little grease of
some kind on the coil on the main
unit. Insert the hose in the locking
device and push it onto the stud on
the main unit.
It is important that the hose is pulled
through the blue locking ring where
the hose should be fitted to the
“cone” before tightening the screw.
Se picture
Fit the hose onto the metal cone
before starting to turn the blue ring
The hose must first enter the cone
and it shall be pulled close to the
threads Turn the locking device
clockwise while holding the hose so
that it does not turn.
Test that the hose is properly fitted
by pulling it relatively hard. Both
hoses should be changed at the same
time.
.
.

Technical manual OT-600-060/1
Page 18
Change of hose seal
The worn out seal is pulled off and the area is properly cleaned.
Fit the new seal carefully.
12. Warranty conditions
KANMED warrants the OT600 Main Unit and Hand Controller for a period of 12 months from purchase
date. Consumables like hoses are not included in the KANMED warranty.
In case of a warranty matter KANMED may in its own judgment decide to:
•Repair the units with new or exchange parts
•Change the equipment
•Take the unit back against a refund
The warranty is not valid if:
•The unit has been modified, adjusted or repaired without the written consent of KANMED.
•The unit has been modified, adjusted or repaired without following the written KANMED guidelines.
•The units has been used for other purposes that the intended use, misused, dropped or in any other
way been abused.
Warranty claims must be confirmed in writing.
KANMED is not responsible in any way for any damages of any kind arising from deviation from
intended use, neglect of safety instructions, neglect of alarms, neglect of annual service, etc.

Technical manual OT-600-060/1
Page 19
13. EMC guidelines
•Portable and mobile RF communications equipment can affect MEDICAL ELECTRICAL EQUIPMENT.
•The OT600 should not be used adjacent to, or stacked with other equipment. If adjacent or stacked
use is necessary, the OT600 should be observed to verify normal operation in the configuration in
which it is used.
Guidance and manufacturer’s declaration - electromagnetic emmissions
The OT600 warming system is intended for use in the electromagnetic environment specified below. The customer or the user
of the OT600 should assure that it is used in such an environment.
Emission test Compliance Electromagnetic environment - guidance
RF emissions
CISPR 11 Group 1
The OT600 system uses RF energy only for its internal
function. Therefore, its RF emissions are very low and
are not likely to cause any interference in nearby
electronic equipment.
RF emissions
CISPR 11 Class B
Harmonic emissions
IEC 61000-3-2 Class B
Voltage fluctuations/
flicker emissions
IEC 61000-3-3
Complies
The OT600 is suitable for use in all establishments,
including domestic establishments and those directly
connected to the public low-voltage power supply
network that supplies buildings used for domestic
purposes.
Recommended separation distances between portable and mobile RF communications
equipment and the OT600 system.
The OT600 warming system is intended for use in the electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the OT600 system can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment (transmitters) and the OT600 system as
recommended below, according to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter
m
Rated maximum
output power of
transmitter
W
150 kHz to 80 MHz
d = 1,17 √P
80 MHz to 800
MHz
d = 1,17 √P
800 MHz to 2,5 GHz
d = 2,33 √P
0,01 0,2 m 0,2 m 0,3 m
0,1 0,4 m 0,4 m 1,6 m
1 1,2 m 1,2 m 2,3 m
10 3,7 m 3,7 m 7,4 m
100 11,7 m 11,7 m 23,3 m
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m)
can be established using the equation applicable to the frequency of the transmitter, where Pis the maximum output power
rating in watts (W) according to the transmitter manufacturer.
Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.
Guidance and manufacturer’s declaration - electromagnetic immunity
The OT600 system is intended for use in the electromagnetic environment specified below. The customer or the user of the OT600
should assure that it is used in such an environment.

Technical manual OT-600-060/1
Page 20
Immunity test IEC 60601 test level Compliance level Electromagnetic
environment - guidance
Electrostatic discharge
(ESD)
IEC 61000-4-2 ±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood,
concrete or ceramic
tile. If floors are
covered with synthetic
material, the relative
humidity should be at
least 30%
Electrical fast
transient/burst
IEC 61000-4-4
±2 kV for power
supply lines
±1 kV for input/output
lines
±2 kV for power
supply lines
±1 kV for input/output
lines
Surge
IEC 61000-4-5
±1 kV differential
mode
±2 kV common mode
±1 kV differential
mode
±2 kV common mode
Mains power quality
should be that of a
typical commercial or
hospital environment
Voltage dips, short
interruptions and voltage
variations on the power
supply input lines
IEC 61000-4-11
<5% UT
(>95% dip in UT)
for 0,5 cycle
40% UT
(60% dip in UT)
for 5 cycles
70% UT
(30% dip in UT)
for 25 cycles
<5% UT
(>95% dip in UT)
for 5 sec
<5% UT
(>95% dip in UT)
for 0,5 cycle
40% UT
(60% dip in UT)
for 5 cycles
70% UT
(30% dip in UT)
for 25 cycles
<5% UT
(>95% dip in UT)
for 5 sec
Mains power quality
should be that of a
typical commercial or
hospital environment.
If continued operation
during power mains
interruptions, it is
recommended that the
OT600 system be
powered from an
uninterruptible power
supply unit (UPS)
Power frequency (50 Hz)
magnetic field
IEC 61000-4-8
3 A/m 3 A/m
Power frequency
magnetic fields should
be at levels
characteristic of a
typical location in a
typical commercial or
hospital environment
Note: UT is the AC mains voltage prior to application of the test level