DeVilbiss SleepCube nCPAP, SleepCube DV54-P, SleepCube DV53, SleepCube DV54, SleepCube DV53 PAP Service Manual
SleepCube™ nCPAP Device
Model DV53/DV54/DV54-P
Service Manual
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Table of Contents
1. General Information 3
A. Safeguards 3
B. Initial Inspection 3
C. Travel 4
D. DC Power 4
E. Setting Pressures and Features 4
F. Images: DeVilbiss DV54/DV53 PAP 4
2. Description of Normal Operation 5
3. Cleaning and Disinfecting 6
A. Routine Cleaning--Patient 6
B. Disinfecting 6
4. Maintenance 9
A. Initial Inspection—Equipment Provider 9
B. Routine Maintenance—Patient 9
C. Required 3-year Maintenance—
Equipment Provider 9
5. Testing 10
A. Pressure Accuracy Test 10
B. Keypad Test 10
C. Auto-ON / Auto-OFF Test 10
D. Backlight Test for LCD and Keypad 11
6. Alerts and Device Faults 12
A. Alerts Visible to Patients 12
B. Device Faults Visible to Patients 12
C. Reading and Clearing the Last Device Fault Code 12
7. Calibration 13
A. Manual Calibration 13
B. Calibration Errors 14
C. Auto-Calibration 14
D. Details on Tc Serial Command 14
8. Troubleshooting 15
9. Service Instructions 16
A. Cover Removal 16
B. Cover Replacement 16
C. Control PC Board Removal 16
D. Control PC Board Replacement 17
E. Power Supply Board Removal 18
F. Power Supply Board Replacement 18
G. Blower Removal 19
H. Blower Replacement 19
I. KeyPad & LCD Display Removal and Replacement 20
10. Unit Specifications 21
11. General Information- DV5HH 22
A. Safeguards 22
B. Travel 22
C. DC Power 22
D. Product Description 22
12. Description of Normal Operation (DV5HH) 23
13. Maintenance and Testing (DV5HH) 24
A. Cleaning and Disinfection 24
B. Maintenance 24
C. Testing 24
14. Troubleshooting (DV5HH) 25
15. Service Instructions (DV5HH) 26
A. Removing the DV5HH base cover 26
B. Replacing the DV5HH base cover 26
C. Removing and replacing silicone manifold 27
D. Removing and replacing the latch 27
16. Unit Specifications (DV5HH) 28
A. Ordering Non-Warranty Replacement Parts 29
B. Ordering Warranty Replacement Parts 29
C. Returning Warranty Defective Parts 29
D. Placing orders 29
17. Ordering and Returning Parts 29
18. Parts List 30
DV54/DV53 31
DV5HH 31
19. Warranties 31
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1. General Information
A. Safeguards
When using electrical products, basic safety precautions
should always be followed. Read all instructions before using
this device. Important information is highlighted by the following terms.
DANGER: Urgent safety information for hazards
that will cause serious injury or death.
WARNING: Important safety information for hazards
that might cause serious injury.
CAUTION: Information for preventing damage to the
product.
NOTE: Information to which you should pay
special attention.
PLEASE READ ALL INSTRUCTIONS
BEFORE USING THIS DEVICE.
DANGER!
• ELECTRIC SHOCK HAZARD – Do not use while bathing.
• ELECTRIC SHOCK HAZARD – Do not immerse this device
into water or any other liquid.
• ELECTRIC SHOCK HAZARD – Do not attempt to open or remove the enclosure. There are no user-serviceable internal
components. If service is required, return the product to
your home care provider. Opening or tampering with the
product will void the warranty.
WARNING!
• The DeVilbiss IntelliPAP™ and SleepCube™ devices should
be used only with masks recommended by DeVilbiss, your
physician or respiratory therapist.
• To avoid rebreathing of exhaled air, do not use a CPAP
mask unless the device is turned on and providing a supply
of air. Venting in the mask should never be blocked. When
the device is turned on and providing a fresh supply of
air, exhaled air is fl ushed out of the mask vent. However,
when the device is not operating, exhaled air may be
rebreathed. Rebreathing of exhaled air for longer than
several minutes can in some circumstances lead to suffocation. This warning applies to most CPAP devices.
• The DeVilbiss IntelliPAP and SleepCube devices are not a
life support devices and may stop operating with certain
device faults or with a power failure. It is intended to be
used on spontaneously breathing individuals weighing 66
lbs/30 Kg or greater.
• To avoid electric shock, always unplug power cord from
wall outlet power source when performing cleaning.
• Use only accessories recommended by DeVilbiss.
CAUTION– Product Damage: The circular data port connector
located on the back of the IntelliPAP and the SleepCube
is used to attach accessories to the device. The connector
must only be used with accessories approved for use by
DeVilbiss. Do not attempt to attach any other device to
this connector as it may damage the CPAP or the accessory device.
CAUTION– Product Damage: Never rinse or place the device in
water. Never allow liquids to get into or around any of the
ports, switches or air fi lter; doing so will result in device
damage. If this occurs, discontinue use and remove the
power cord from the power source. Allow the device to
completely dry before use.
CAUTION– Product Damage: Do not place the IntelliPAP or
SleepCube where it can be bumped onto the fl oor or
where the power cord may create a trip hazard.
CAUTION– Product Damage: Only the DeVilbiss DV5 series
Heated Humidifi er system is recommended for use with
the IntelliPAP and SleepCube. Other humidifi er systems
may prevent the device from detecting snoring and may
cause inappropriate pressure levels in the mask.
CAUTION– Product Use: Oxygen is a prescription gas and
should only be administered under the supervision of a
physician.
B. Initial Inspection
DeVilbiss recommends equipment inspection upon delivery
❏ Power up the DV54/DV53 PAP using AC power.
❏ Test pressure accuracy using an outlet cap (DV54/
DV53D-620), a calibrated pressure gauge and the procedures listed under Pressure Accuracy Test.
❏ Test the keys on the keypad using the procedures listed
under Keypad Test.
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C. Travel
The DeVilbiss DV54/DV53 PAP:
• Automatically adjusts for altitudes between sea level and
9000 ft (2750 m)
• Automatically accepts line voltages of 100-240 V, 50/60 Hz
• Needs power cord appropriate for area
o USA DV54/
DV53D-606
o Europe, except UK DV54/DV53D-607
o UK DV54/DV53D-608
o Australia DV54/DV53D-609
o Set of 3 (UK, Europe, Australia) DV54/DV53D-611
D. DC Power
The DeVilbiss DV54/DV53 PAP:
• Automatically accepts 12V DC power
• Operates on DC power only if AC power is not present
• Operates on AC power if both DC and AC power are present
• Optional 12V, 60 amp hour, deep cycle marine battery
• Optional DC to AC inverter:
minimum 200 watts @ 100/120 VAC
minimum 400 watts @ 220 VAC
• Appropriate DC power cord
o DV54/DV53D-619 DC accessory cable for DC plug-in
adapters
o DV54/DV53D-696 DC battery clamp-on adaptor for
stand-alone battery
E. Setting Pressures and Features
Use the following steps to enter Clinical/SetUp mode:
1. Apply AC power to the unit
2. Verify that LCD displays OFF
3. Press and hold the Down Arrow key and the Delay key.
4. While holding two keys, press the ON/OFF key.
5. The blower will begin operating and the LCD will display
‘Clinical Menu’.
6. Use the Left and Right Arrow keys to scroll through the
options
7. Use the Up and Down Arrow keys to select the option’s
value.
8. Press the ON/OFF key at any time to exit Clinical Mode.
F. Images: DeVilbiss DV54/DV53 PAP
Figures A and B: DV54/DV53 Device Back and Bottom
1. Air supply port on back of device
2. Air supply port on bottom of device
(for optional humidifi er)
3. Air supply port plug
4. Heater power connector (for optional humidifi er)
5. AC power connector
6. DC power connector
7. Data por t
8. Air inlet fi lter opening
Figure C: Keypad
1. ON/OFF
2. Previous item
3. Next item
4. Delay
5. Decrease value
6. Increase value
7. Heater power LED
(for optional humidifi er)
C
5
1
2
4
6
3
7
B
2
4
A
1
3
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2. Description of Normal Operation
An AC line cord (100-240 VAC, 50/60 Hz) or a DC line cord (12
VDC) supplies electrical power to the DV54/DV53 PAP. The
PAP converts the AC input voltage to DC voltage by means
of an internal switch mode power supply and uses the DC
voltage to power the internal electronics of the unit, such as
microcontroller, motor control circuitry, blower, LCD display,
etc. NOTE: The heated humidifi er will not operate when the
PAP uses external DC power.
The PAP produces positive pressure by spinning a reversecurved impeller with a brushless DC motor. Room air is drawn
through a fi lter into the blower, pressurized in the blower,
optionally passed through a heated humidifi er chamber, and
then discharged through a 22mm-ID, smooth-bore tube.
Pressure regulation is achieved using measured pressure as
feedback.
The DV54/DV53 PAP senses patient breathing by monitoring
changes in motor current: Breathing produces variations in
airfl ow; the airfl ow variations produce changes to the blower
load and result in variations to the motor current. A pressure
transducer triggers the auto-ON / auto-OFF functionality and
mask-OFF alerts.
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A. Routine Cleaning–Patient
• Unplug the DV54/DV53 PAP and wipe enclosure with a
clean, damp cloth every few days to keep dust free. Allow
the device to dry completely before returning to power
source.
• Check the air-inlet fi lter every 10 days. Wash the dark
outer foam fi lter in a solution of warm water and mild
detergent. Rinse with water and allow the fi lter to dry
completely before returning to the device.
• Check the optional fi ne particle fi lter every 10 days and
replace if dirty or damaged.
• Clean the air supply tubing every day. Remove the tubing
from the device and mask and wash the inside of the tubing in a solution of warm water and mild detergent. Rinse
with water and allow to air dry before replacing device
and mask.
• Clean the mask and headgear according to the manufacturer’s instructions.
B. Disinfecting
CAUTION– Always work in an ESD (electro static discharge)
safe environment when assembling or disassembling
electronic components.
NOTE– DeVilbiss does not require disinfection as part of unit
maintenance. If disinfection is desired, the following procedure is recommended.
NOTE– Parts needed to perform the disinfection procedure
are NOT covered under the DV54/DV53 PAP warranty as
listed in this manual.
NOTE– Follow manufacturer’s instructions for cleaning and
disinfection solutions.
NOTE– Disinfection requires the following parts sold in Dis-
infection Kit, DV54/DV53D-682.
• Blower assembly, balanced
• Blower isolator-silicone
• Grommet-silicone
• 1/4 inch blower wrap foam
• 3 1/2 inch silicone tubing
• Air-inlet fi lter
• 5 1/2 inch silicone tubing—
discard, not needed for this model
• Tubing/Humidifi er air supply support plug
• 1/2 inch blower mount foam-round
• 1/2 inch top blower foam
• 1/8 inch inside bottom cover foam
• 5 inch silicone tubing
• Fine particle fi lter (optional)
3. Cleaning and Disinfecting
Disinfection Procedure for the DV Series PAP
1. Make certain that the device is not connected to a power
source.
2. Dispose of the mask, headgear, air supply tubing, gray air
inlet fi lter and white fi ne particle fi lter, if applicable.
3. Place the unit, top side down, onto a clean work surface.
Remove the four (4) screws from the bottom cover and
remove the bottom cover from the unit. (Fig. 1)
4. Remove the black 1/8 inch foam from inside the bottom
cover assembly and discard. This foam may stick to the
chassis of the main unit. (Fig. 2)
5. Remove the black 1/2 inch top blower foam from the
chassis assembly and discard.
6. Turn the unit top side up and remove the top cover.
7. Using a T-15 driver, remove the screw holding the PC board
to the chassis. (Fig. 3)
8. Disconnect the 8-conductor blower wire harness from the
underside of the PC board. (Fig. 4)
9. Disconnect the two (2) pieces of tubing and discard. (Fig. 5)
NOTE– Pull the tubing straight off the connectors to prevent
damaging the chassis.
10. With the ports side of the chassis toward you, tilt the
PC board and its respective wire harnesses upward, and
remove the wire connections. Lift the PC board slowly so
that you can assist any wires that may become hung up
on the chassis or power supply. (Fig. 6)
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11. Remove the grommet that seals the blower’s wire harness.
(Fig. 7)
12. Remove the heater wire harness connector from the bottom of the chassis by sliding the connector outward while
pulling the top retaining tab upward slightly. (Fig. 8)
13. Remove the 1/4” blower wrap foam, the blower, and the
silicone isolator from the underside of the chassis.
14. Carefully spray, wipe or soak the air intake, fl ow path, and
blower chassis inside and outside using a 2% glutaraldehyde solution.
15. Wipe the power cord and the outside of both halves of the
PAP case with the same solution.
16. Let all components fully dry
17. Reassemble the unit using parts from the Disinfection
Kit—DV54/DV53D-682.
NOTES:
• Route the silicone tubing correctly, as shown, and ensure
that there are no kinks. (Fig. 9)
• Ensure that the silicone isolator is fully seated in the chassis and the blower.
• Ensure that the grommet is fully seated around the blower
wire harness.
• Route the wire harnesses properly, using the provided
strain reliefs on the chassis. (Fig. 10 & 11)
• Secure the power supply board within the mount clips on
the chassis before replacing the unit covers. (Fig. 10)
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4. Maintenance
A. Initial Inspection—Equipment Provider
DeVilbiss recommends equipment inspection upon delivery
❏ Power up the DV54/DV53 PAP using AC power.
❏ Test pressure accuracy using an outlet cap (DV54/
DV53D-620), a calibrated pressure gauge and the procedures listed under Pressure Accuracy Test.
❏ Test the keys on the keypad using the procedures listed
under Keypad Test.
B. Routine Maintenance—Patient
❏ Wipe case with damp cloth every few days
❏ Check air-inlet fi lter every 10 days and clean as needed
❏ Clean air supply tubing daily
❏ Clean mask and headgear per manufacturer’s instructions.
C. Required three years Maintenance—
Equipment Provider
DeVilbiss requires the following maintenance from the equipment provider:
❏ Test pressure accuracy using procedures listed under Pres-
sure Accuracy Test. If the device is out of calibration, follow
corrective procedures as listed.
❏ Instruct patient on fi lter maintenance described in Instruc-
tion Guide:
Standard Filter
o Inspect fi lter every ten days
o Clean as needed
o Change every 6 months
Optional Fine Particle Filter
o Inspect fi lter every ten days
o Replace if dirty
o Change every 30 days
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The following test procedures verify correct operation of the
DV54/DV53 PAP and should be performed on all repaired
units.
NOTE– Verify that the DV54/DV53 PAP contains the latest
fi rmware release before conducting maintenance or
repairs. Go to http://www.devilbisshealthcare.com/Products to download the latest fi rmware update. Download
and installation instructions are provided on the web site.
A. Pressure Accuracy Test
Additional equipment required: outlet cap (DV54/
DV53D-620), a calibrated pressure gauge (0-30 cmH2O, accuracy ±0.25 cmH2O)
1. Connect the pressure gauge to the unit outlet port.
2. Apply AC power to the unit. If the blower is running, press
the ON/OFF key on the keypad so that the blower stops
and the LCD displays ‘OFF’.
3. While pressing both the Down Arrow and Delay keys,
press the ON/OFF key to start the blower and enter clinical
mode.
4. Press the Next Item key until Set Pressure is displayed.
Use the Up and Down Arrow keys to adjust the pressure
to 12 cmH2O. Wait at least 30 seconds for the pressure to
stabilize.
5. Verify that the displayed pressure matches the pressure
measured on the gauge (pressure setting ±1.0 cmH2O).
Accuracy at other pressure settings can be checked if
needed.
6. If the pressure is out of calibration, turn the blower OFF for
approximately 1 minute to allow auto-calibration to occur.
Turn the blower back ON and allow 30 seconds for the
pressure to stabilize. If the pressure is still out of calibration, perform a full calibration using the Manual Calibration Procedure.
7. If manual calibration does not improve pressure accuracy,
there may be a problem with the fl ow path or control
board. Refer to Troubleshooting.
5. Testing
B. Keypad Test
No additional equipment required.
1. Apply AC power to the unit. If the blower is running, press
the ON/OFF key on the keypad so that the blower stops
and the LCD displays ‘OFF’.
2. While pressing both the Down Arrow and Delay keys,
press the ON/OFF key to start the blower and enter clinical
mode.
3. Press the Next Item key until Delay Time is shown on the
LCD display.
4. Note the Delay Time; then change it by pressing the Up and
Down arrow keys. Use the arrows keys to return the Delay
Time back to the original setting.
5. Use the Previous Item key to return to the Set Pressure
screen.
6. If any of the keypad keys did not function correctly during this test, replace the PC control board using Service
Instruc tions.
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C. Auto-ON / Auto-OFF Test
Additional equipment required: 6 ft x 22 mm smooth bore
tubing.
1. Apply AC power to the unit. If the blower is running, press
the ON/OFF key on the keypad so that the blower stops
and the LCD displays ‘OFF’.
2. While pressing both the Down arrow and Delay keys,
press the ON/OFF key to start the blower and enter clinical
mode.
3. Press the Next Item key until Enable Menu is displayed,
then press the Down Arrow key to enter the sub-menu.
4. Press the Next Item key until the Auto-ON setting is displayed. Use the UP or DOWN arrow keys to set the value
to Enabled.
5. Press the Next Item key until the Auto-OFF setting is displayed. Use the UP or DOWN arrow keys to set the value
to Enabled.
6. Press the ON/OFF key on the keypad so that the blower
stops and OFF is displayed on the LCD.
7. Connect the 6 ft x 22 mm smooth bore tubing to the
CPAP and block the airfl ow with your hand or a plug.
8. Turn the blower ON by pressing the ON/OFF key on the
keypad.
9. Keep the airfl ow blocked for two minutes. Verify that the
blower continues running and no mask alerts appear.
10. Unblock the smooth bore tubing to open the unit’s airfl ow.
11. Verify that after approximately 10 seconds the LCD shows
‘Mask OFF’. If the mask alert did not appear, go to step 14.
12. After another 20 seconds the blower should turn OFF via
the Auto-OFF feature. Wait approximately two minutes
after the blower turns OFF. Verify that the blower does not
turn back ON without breathing present.
13. Tap the palm of your hand on and off the end of the tubing to simulate breathing and verify that the blower turns
ON via the Auto-ON feature.
14. If the Auto-OFF or Auto-ON features do not work correctly,
perform a full calibration using the Manual Calibration
Procedure.
D. Backlight Test for LCD and Keypad
No additional equipment required.
1. Apply AC power to the unit. If the blower is running, press
the ON/OFF key on the keypad so that the blower stops
and the LCD displays OFF.
2. Press the ON/OFF key and verify that the LCD and keypad
backlights are lit.
3. Wait one minute and verify that the LCD and keypad backlights reduce intensity.
4. Press any keypad key, except ON/OFF, and verify that the
LCD and keypad backlights return to full intensity.
5. If the LCD or keypad backlights did not function correctly
during this test, replace the LCD, keypad and/or PC control
board.
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6. Alerts and Device Faults
A. Alerts Visible to Patients
Alert Description
Delay running
XX minutes left
Comfort Delay is active
Mask off. Please check
mask fi t.
High airfl ow during use
(Poor mask fi t or mask
removed)
Device Fault E0X. Call
provider.
Device error (See next table.)
B. Device Faults Visible to Patients
Only device faults classifi ed as critical are visible to the patient
on the LCD display.
These faults can be corrected by a service technician.
Device
Fault
Description
E01
Read Setting Error. Stored prescription settings are corrupted. Unit is in fail-safe state
(blower off) when this error displays. See
Troubleshooting and Service Instructions to
correct fault, or return unit for repair.
E03
Motor Error. Unit attempts to drive the motor, but the blower is not spinning (zero motor
speed). See Troubleshooting and Service
Instructions to correct fault, or return unit for
repair.
E04
Locked Rotor Error. Average motor speed is
low, while the motor current is high, for several
seconds. See Troubleshooting and Service
Instructions to correct fault, or return unit for
repair.
E07
Motor Fault Error. The motor control chip fault
output goes active low for a fi xed period of
time. See Troubleshooting and Service Instructions to correct fault, or return unit for repair.
C. Reading and Clearing the Last Device
Fault Code
NOTE– The last device fault code is stored in EEPROM to assist
in fi eld service of the unit.
Additional equipment: IBM or Compatible PC with a free serial
port, PAP to PC cable (DV54/DV53D-615), a terminal program
(Microsoft Windows HyperTerminal or equivalent).
1. Connect the DV54/DV53 PAP to the PC serial port with
PAP to PC cable.
2. Apply AC power to the unit. If the blower is running, press
the ON/OFF key on the keypad so that the blower stops
and the LCD displays ‘OFF’.
3. Use a terminal program (such as Windows HyperTerminal,
or equivalent) with COM settings 9600 baud, no parity, 8
data bits, 1 stop bit, and Flow Control set to none.
4. When connection is established with the PAP, the terminal
program will show: ‘RI;’ every 0.5 seconds. This display
indicates that the PAP is waiting for a handshake.
5. Type ‘ri’ (all commands are case sensitive) and press Enter.
The PAP should respond with the fi rmware version in the
form “V0.XX mm/dd/yyyy.” Repeat this step if necessary
to complete the handshake.
6. Request the last alert code and date by typing ‘El’ and
pressing Enter. The return value will be in the form ‘Exx
dd/mm/yyyy’. Exx is the alert code and dd/mm/yyyy is
the date the error occurred.
7. Clear the last alert code by typing ‘Ec’ and pressing Enter.
The PAP will respond with ‘OK’.
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A. Manual Calibration
DeVilbiss recommends calibrating the DV54/DV53 PAP if
replacing the PC control board or when testing or troubleshooting indicate calibration is required. The manual
calibration procedure accesses a terminal program via the
unit’s communication port to calibrate the internal pressure
sensor and the motor current circuitry. Progress and confi rmation messages display on the terminal screen throughout
the procedure. If a failure occurs during calibration, the error
displays as well. See Calibration Errors below.
Additional equipment: IBM or Compatible PC with a free serial
port, PAP to PC cable (DV54/DV53D-615), a terminal program
(Microsoft Windows HyperTerminal or equivalent) and a
calibrated pressure gauge (0 to 30 cmH
2
O).
Please read all steps before beginning this process.
NOTE– Details on the Tc serial commands used in this proce-
dure are listed in Section D.
1. Use the PAP to PC cable to connect the DV54/DV53 PAP to
a PC serial port and apply AC power to the PAP.
2. Use a terminal program (such as Windows HyperTerminal,
or equivalent) with COM settings 9600 baud, no parity, 8
data bits, 1 stop bit, Flow Control set to none.
3. When connection is established with the PAP, the terminal
program will show: ‘RI;’ every 0.5 seconds. This display
indicates that the PAP is waiting for a handshake.
4. Type ‘ri’ (all DV54/DV53 commands are case sensitive)
and press ENTER. The PAP will respond with the fi rmware
version in the form ‘V0.XX dd/mm/yyyy’. Repeat this
step if necessary to complete the handshake.
5. Start the calibration process by typing ‘Tc= s’ and pressing
ENTER. The PAP will respond with
‘Calibration Started’. If the unit responds with ‘WF’,
resend the ‘Tc=s’ command.
6. The PAP will begin sending messages and prompting for
responses to complete the calibration. NOTE: If a calibration failure is encountered at any stage during the procedure, the PAP will respond with ‘Cal failed: EXX’,
where XX is a two digit error code.
a. PAP sends ‘Waiting for blower to stop spin-
ning’.
b. PAP sends ‘Cal press offset’ when spinning is
stopped.
During this stage of the procedure the PAP stops the
blower and saves the pressure sensor and motor current
offsets. After a short delay, the PAP increases the pressure
to approximately 20 cmH
2
O.
c. PAP sends ‘Set pressure to 20 cmH2O using
Tw+, Tw-, or Tw=’ ‘Send Tc=y when ready’
d. Connect the pressure gauge to the PAP outlet (the
7. Calibration
outlet should be in a deadhead or zero fl ow condition)
and, using the computer keyboard (‘Tw+’ followed by
ENTER increases the pressure and ‘Tw-’ followed by
ENTER decreases the pressure), adjust the PAP pressure
to 20 cmH2O (± 0.1 cmH2O), then type ‘Tc=y’ followed
by ENTER.
e. PAP sends ‘Reading and saving pressure hi
cal’ after confi rming that the pressure is correct.
During this stage of the procedure, the PAP calibrates
the pressure sensor by reading and saving the high
pressure calibration value.
NOTE– As an alternative to steps d and e, the current PAP
pressure gauge reading can be sent to the PAP from the
terminal. Perform the following steps for this option:
Use the ‘Tw+’, ‘ Tw-’, or ‘Tw=X’ (where X is a number
between 0 and 1023 to adjust the pressure to a value
between 15 and 30 cmH2O.
If the pressure is already within this range no adjustment
is needed.
NOTE: A more accurate calibration will be obtained, if the
value is close to 20 cmH2O.
7. Send the pressure to the PAP in the format ‘Tc=yxxxxx’,
where xxxxx is the gauge pressure in cmH2O multiplied
by 1000 (Example: 20 cmH2O is sent as ‘Tc=y20000’. )
8. After a short delay the PAP will respond with ‘cal suc-
cessful’. Calibration is now complete. Please check the
PAP pressure settings for accuracy.
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B. Calibration Errors
Code Description
E95
Calibrate Motor Stop Error. The blower did
not stop during device calibration. This error only
occurs during the calibration procedure.
C. Auto-Calibration
The DV54/DV53 PAP automatically adjusts calibration to
maintain accuracy over time and under varying operating
conditions. Each time the blower is turned OFF, the PC control
board reads and saves the offset voltages from the pressure
transducer. The PAP uses these voltages to maintain calibration accuracy as the unit is used over time.
D. Details on Tc Serial Command
Tc serial commands are used in the manual calibration procedure listed in Section A. The ‘Tc’ command on the terminal
program reads the unit’s current calibration values, starts
the calibration procedure, and handles user feedback during the calibration process. Refer to the manual calibration
procedure for details on the calibration process.
• Sending ‘Tc=s’ to the PAP starts the calibration process.
• Sending ‘Tc’ without a modifi er requests the current
calibration values. A comma-separated list of all cal values
is returned.
Comma-separated response to ‘Tc’ with no modifi er:
llll,hhhh,mmmm<cr>
o llll is the pressure low cal (sensor offset). Convert to
voltage by dividing by 1024 and multiplying by 5.
o hhhh is the pressure high cal (sensor output at 20
cmH2O). Convert to VDC by dividing by 1024 and multiplying by 5.
o mmmm is the motor current calibration (adc offset)
• Feedback is provided to the calibration task by sending
‘Tc= y’ when prompted.
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Symptom
Action (for symptoms listed at left, follow the
steps listed below)
Blower
does not
start when
powered
up
1. Remove the cover. See Service Instructions.
2. Search for disconnected wire harnesses
and reconnect, if needed.
3. Determine if fuses are open.
Without AC power to the unit, measure
the resistance across the F1 fuse with an
ohmmeter. If 0.0 to 0.5 ohms of resistance
are not present across the fuse, the fuse is
open and the power supply board should
be replaced. See Service Instructions.
Without AC power to the unit, measure
the resistances across the F2 and F3 fuses
with an ohmmeter. If 0.0 to 0.5 ohms of
resistance are not present across either
fuse, the fuse is open and the PC control
board should be replaced. See Service
Instruc tions.
4. If all fuses are closed, install a blower
known to operate properly, see Service
Instructions, and power up the unit.
If the new blower operates properly,
replace the old blower.
If the new blower does not operate prop-
erly, replace the control board. See Service
Instruc tions.
5. Replace the cover. See Service Instructions.
E03, E04,
or E07
errors
display
OR display
is blank
E01
error code
displays
Replace the control board
Blower is
loud
1. Remove the cover and control board. See
Service Instructions.
2. Inspect the assembly of the foam, blower,
and silicone isolator. See Blower Replacement instructions for correct placement.
3. Inspect the blower for visible space between the blower halves and press halves
back together, if needed.
4. If the assembly is not correct, reassemble
the components.
5. If assembly is correct, replace the blower.
See Service Instructions.
6. Replace the control board and cover. See
Service Instructions.
8. Troubleshooting
Symptom
Action (for symptoms listed at left, follow the
steps listed below)
Pressure
out of
tolerance
(Pressure ±
1.0 cmH
2
O
of setting)
1. Remove the cover. See Service Instructions.
2. Search for disconnected, occluded, or
kinked tubing on the pressure sensor or
chassis. Correct any issues.
3. Search for damage to any foam pieces
and/or tubing and replace the component, if damaged.
4. Remove the control board. See Service
Instructions.
5. Search for signs of water damage to the
blower assembly, pressure sensor and
replace the component, if damaged.
6. Inspect the blower. If a space is visible
between the top and bottom sections,
press the halves together to eliminate the
space.
7. Repeat the pressure test.
8. If the pressure remains out of tolerance,
re-calibrate the unit. See Service Instructions.
9. If the pressure remains out of tolerance,
replace the control board. See Service
Instruc tions.
10. Replace cover. See Service Instructions.
Calibration
failure–
Error code
E95
Display on
terminal
program
during
calibration.
1. Remove the cover. See Service Instructions.
2. Search for damage, and/or loose connections, on the air intake fi lter, intake
foam components, and all internal tubing
and replace or reconnect components, if
needed. Search for disconnected, occluded, or kinked tubing on the pressure sensor and chassis and reconnect or replace
tubing, if needed.
3. Remove the control board. See Service
Instruc tions.
4. Search for signs of water damage to the
blower assembly, pressure sensor and
replace, if damaged.
5. Inspect the blower. If a space is visible
between the top and bottom sections,
press the halves to eliminate the space.
6. Repeat Manual Calibration Procedure.
7. If the error codes are not resolved, replace
the control board. See Service Instructions.
8. Replace the cover. See Service Instructions.
16
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C. Control PC Board Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. Remove the cover. See instructions above.
2. Wearing an anti-static device, lift the cover off the chassis
and place it, with the control board facing up and the
blower facing down, onto a clean fl at surface.
3. Disconnect the two pieces of tubing from the outlet port
side of the chassis.
4. Disconnect accessible wire harnesses: one behind and one
to the left of the tubing in step 3, one at the right corner
under the keypad, and one on the outside of the power
supply board.
5. Remove one T-15 screw, located near the middle of the
board beside LCD screen. Lift the board off the chassis
slowly and disconnect any remaining wire harnesses from
the control board.
6. Place control board keypad facing down onto a clean, fl at,
static-free surface, if returning to the unit.
NOTE– After performing any service on the DV54/DV53 PAP,
please test the unit to ensure proper operation and calibrate, if necessary.
A. Cover Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. If using a DV5HH, remove the heated humidifi er and unplug the tubing/humidifi er air supply support plug from
the back of the cover and re-plug it in the outlet on the
bottom cover.
2. Position the PAP on a clean, fl at surface with the keypad
facing down.
3. Remove four T-20 screws from the bottom cover.
4. Lift the bottom cover straight up off the top cover.
NOTE– Attempting to reorient the PAP in order to lift the
top cover, instead of the bottom cover, may damage this
device.
5. Wearing an anti-static device, turn the unit over and lift
the top cover off the chassis.
B. Cover Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. Wearing an anti-static device, search for and connect all
loose wire harnesses.
2. Place the top cover onto the chassis, with the keypad
facing the cover and fi tting the control board around the
screw posts in the cover.
3. Connect all tubing, carefully creating the correct loops and
eliminating any kinking. (Fig. 1)
4. With the 1/8 inch inside bottom cover foam oriented
correctly and lying fl at, place the bottom cover over the
chassis and onto the top cover, fi tting the screw posts into
proper alignment with the chassis and moving any protruding wire harnesses and tubing away from the edges of
the cover.
5. Replace four T-20 screws.
9. Service Instructions
1
LT-2026
17
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D. Control PC Board Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover and the control PC board.
2. Wearing an anti-static device, verify that the silicone rattails holding the keypad and LCD display onto the control
board are pulled through the appropriate holes in the
board. See Keypad & LCD Display instructions.
3. Place the chassis on a clean fl at surface with the blower
facing down. Orient the replacement board so that the
keypad is over the rounded end of the chassis.
4. Tilt the board and connect the two wire harnesses near
the power supply board and insert the brown and blue
wires into the notch on the chassis. Tilt the board and
connect the two wire harnesses near the outlet port.
Connect the wire harness near the right corner of the
keypad. (Fig. 2)
5. Position the board (Fig. 3) so that: the hole on the board
(A), located below the ON/OFF key, is over the peg on the
chassis; the small hole (B), located near the LCD screen, is
over the screw hole on the chassis; and the cut-out (C) on
the left rear corner fi ts around the protrusion above the
air outlet port on the chassis. Move any stray tubing from
between the board and the chassis, verify that all wire harnesses are properly routed, and replace the T-15 screw on
the board.
6. Replace the cover. See instructions above.
7. Connect the CPAP to a PC serial port with cable DV54/
DV53D-615 and turn the CPAP on.
8. Use a terminal program (such as Windows HyperTerminal,
or equivalent) with COM settings 9600 baud, no parity, 8
data bits, 1 stop bit, Flow Control set to none.
9. When connection is established with the CPAP, the
terminal program will show: “RI;” every 1/2 seconds. This
display indicates that the CPAP is waiting for a handshake.
10. Type ‘ri’ and press ENTER. The CPAP should respond with
the fi rmware version in the form “V0.XX dd/mm/yyyy.”
Please note that all commands are case sensitive. Repeat
this step if necessary to complete the handshake.
11. Type ‘Mn<cr>’. The CPAP will report the model number
saved in memory, it should be “000000” if the PC board is
new.
12. Read the model number from the CPAP label on the bottom of the unit (EX: DV54SE).
13. Type ‘Mn=nnnnnn<cr>’ where nnnnnn is the 6 digit
model number read in the previous step (use a space for
the last digit if necessary to make the string 6 digits). The
CPAP should return the new six-digit model number.
14. Type ‘Sn<cr>’. The CPAP will report the serial number
2
3
A
B
C
saved in memory, it should be “00000000” if the PC board
is new.
15. Read the serial number from the CPAP label on the bottom
of the unit.
16. Type ‘Sn=nnnnnnnn<cr>’ where nnnnnnnn is the 8 digit
serial number read in the previous step. The CPAP should
return the new eight-digit serial number.
18
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17. Read the Hour Meter (“Uh<cr>”)– a new PC board should
have 00000 hours. It is recommended that the original
hour meter value be restored if the original blower is used.
Set the hour meter by sending ‘Uh=nnnn<cr>’ where
nnnn is the hour meter reading x 10 (Ex: 100.5 hours
would be set by typing ‘Uh=1005<cr>’).
18. Read the Compliance Meter (“Up<cr>”)– a new PC board
should have 00000 hours. Clear the Compliance meter if
it is not zero by typing ‘Up=c<cr>’. The CPAP will return
000000.0 hours.
19. Check the fi rmware and hardware version information.
Read and record the following:
• BIOS rev “VB<cr>”
• Firmware rev “VF<cr>”
Check the present version of fi rmware to make sure the
board is up to date. Install new fi rmware if the board has
an old version.
20. Check for last saved error, type ‘El<cr>’. The CPAP will
respond with “Exx dd/mm/yyyy” where xx is the last
saved error code and dd/mm/yyyy is the date that the
error was detected. Clear the last error by typing ‘Ec<cr>’,
the CPAP will return “OK.” Verify that the error code is “00”
by typing ‘El<cr>’.
21. Set all device settings to their default values by typing
‘TD<cr>’. The CPAP should return “OK.”
22. Recalibrate the unit.
E. Power Supply Board Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover and the control PC board.
2. Wearing an anti-static device and with the power supply
board facing you, apply thumb pressure to top left corner
of the board while pulling the top right corner up and out
of the mount clip at its bottom.
3. Pulling the top left corner out of its mount clip, lift the
board off the chassis.
4. If returning the power supply board to the unit, place the
board onto a clean, fl at, static-free surface with its large
components facing up OR if discarding the power supply
board, remove the two wire harnesses for use with the
replacement board or purchase a new wire harness kit.
F. Power Supply Board Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover, the control PC
board and the power supply board.
2. Wearing an anti-static device, connect the wire harnesses
from the old power supply board to the new power supply
board or use a new wire harness kit.
3. Position the chassis so that the blower faces down and the
inlet and outlet ports face you. Position the power supply
board so that the components are facing away from you
with the large brown component in the bottom left corner and the small blue component in the top right corner.
4. Place the board into the mount clips at the bottom of the
power supply board cavity and press down fi rmly on the
top corners until the board is fully mounted.
5. See instructions above to replace the control PC board and
the cover.
G. Blower Removal
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove the cover and control PC
board
2. Carefully remove the silicone grommet holding the blower
wire harness. (Fig. 4)
3. Holding the wire harness in your hand, turn the chassis
over so that the blower is facing up.
4. Remove the foam covering the blower and the foam
around the blower.
5. Reach into the blower cavity and push the silicone isolator off
the blower outlet. (Fig. 5)
6. Slowly lift blower out of the chassis and carefully pull the
wire harness through the hole in the chassis. If not returning blower to unit, remove foam from bottom of blower
and save for new blower.
LT-2026
19
EN
6. Insert the top blower foam so that it conforms to the
edges of the blower cavity portion of the chassis.
7. Turn the chassis over so that the blower is facing down.
Gently pull any slack from the wire harness. Insert the
silicone grommet into the hole in the chassis so that the
slit in the grommet is toward the power supply board
location, all the wires are in the center hole of the grommet and the grommet fl ange is fully sealed. Route the wire
harness along the top of the chassis and down the front of
the blower cavity portion of the chassis. (Fig. 8)
8. See instructions above to replace the control PC board and
the cover.
H. Blower Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage this device.
1. See instructions above to remove the cover, control PC
board and blower.
2. Insert the blower mount foam on the blower base so that
the holes in the foam align with the protrusions on the
blower and the blower wire harness is through the center
hole in the foam. (Fig. 6)
3. Turn the blower over so that the motor is facing down.
Guide the wire harness through the hole in the bottom of
the blower cavity portion of the chassis.
4. Lower the blower with its outlet port pointing at the
silicone isolator. Position the blower’s outlet port into the
top edge of the silicone isolator then tilt the outlet port
into the isolator opening without folding the isolator. Push
the outlet port into the isolator until the port is evenly
inserted into the isolator. See isolator image in Blower
Removal instructions.
5. Insert the blower wrap foam so that the single-notched
end is beside the blower outlet port. Wrap the remaining foam strip clockwise around the blower so that the
notched foam corresponds to the latches on the blower
body. Wrap the double-notched end around the blower
and over the outlet port. The top edge of the foam should
be almost fl ush with the blower. (Fig. 7)
4
6
7
Slit direction
harness direction
8
20
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EN
I. KeyPad & LCD Display Removal and
Replacement
CAUTION– Failure to wear anti-static equipment during ser-
vice may damage
this device.
1. See instructions above to remove cover and control PC
board.
2. Wearing an anti-static device, disconnect the two LCD
display wire harnesses. (Fig. 9)
NOTE– Do not touch the exposed contact area on the end of
the ribbon cable. Dirt and oils may damage it.
3. Gently roll the silicone frame away from the edges of the
LCD display screen (Fig. 10), lift the display off the keypad
and place it on a clean, fl at, anti-static surface, if returning
to the unit.
4. Lift the keypad off the board, gently pulling three silicone
rattails through the board.
NOTE– Do not touch the keypad contacts on the PC board.
Dirt and oils may damage them.
5. Replace the keypad by inserting the silicone rattails on the
replacement keypad through appropriate holes on the
control board and gently pulling the rattails through the
holes.
6. Insert the LCD display into the silicone frame on the
keypad and connect the wire harnesses to the appropriate
connectors on the board.
7. See instructions above to replace the control PC board and
the cover.
9
10
LT-2026
21
EN
Unit Specifi cations
Size 4.2” H x 6.5” W x 6.9” D (10.7 cm x 16.5 cm x 17.5 cm)
Weight 2.7 lbs. (1.22 kg)
Electrical Requirements 100-240V~, 50/60 Hz
D.C. Operation 12 volts at 5 amps
Maximum Power Consumption 65 watts max from AC power source (PAP device only)
CPAP Pressure Range 3-20 cmH
2
O
Operating Temperature Range 41°F to 104°F (5°C to 40°C)
Operating Humidity Range 0% to 95% RH non-condensing
Operating Atmospheric Conditions Sea level to 9,000 feet
Storage & Transportation Temperature Range -40°F to 158°F (-40°C to +70°C)
Storage & Transportation Humidity Range 0% to 95% RH non-condensing
Maximum Limited Pressure 20 cmH
2
O under normal use
Sound Level 26 dBA
Filter Specifi cations
Standard Filter > 3.0 micron particles
Optional Fine Particle Filter > 0.3 micron particles
Max Flow Rates
83 L/m @ 6.5 cmH2O (1/3 max pressure)
134 L/m @ 13 cmH
2
O (2/3 max pressure)
163 L/m @ 20 cmH
2
O (max pressure)
Pressure Accuracy ± 1.0 cmH
2
O
Pressure Swings (cmH
2
O peak to peak at 500mL tidal volume, sine wave profi le)
Breaths per
minute
10 15 20
@ 6.5 cmH
2
O 0.5 0.5 0.5
@ 13 cmH
2
O 1.0 1.0 1.0
@ 20 cmH
2
O 1.0 1.0 1.0
Other Specifi cations
Equipment classifi cation with respect to protection
from electric shock
Class II
Degree of protection from electric shock Type BF Applied Part
Degree of protection against ingress of liquids IPX1
Drip Proof Equipment not suitable for use in the presence of a fl ammable anesthetic
mixture with air or with oxygen or nitrous oxide.
Mode of operation Continuous
Clinical Specifi cations for Digital Outputs
Pressure 0 to 25.5 cmH2O ± 1.0
22
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11. General Information DV5HH
A. Safeguards
When servicing electrical products, basic safety precautions
should always be followed. Important safety information in
this manual is highlighted by the following terms.
DANGER: Urgent safety information for hazards
that will cause serious injury or death.
WARNING: Important safety information for hazards
that might cause serious injury.
CAUTION: Information for preventing damage to the
product.
NOTE: Information to which you should pay
special attention.
PLEASE READ ALL INSTRUCTIONS BEFORE
SERVICING THIS DEVICE.
DANGER!
• Electric Shock Hazard – Do not use while bathing.
• Electric Shock Hazard – Do not immerse this device into
water or any other liquid.
• Electric Shock Hazard – Do not attempt to open or remove the enclosure. There are no user-serviceable internal
components. If service is required, return the product to
your home care provider. Opening or tampering with the
product will void the warranty.
WARNING!
• Use the Heated Humidifi er system only for its intended
use as described in this manual.
• Be sure to read and understand all safety instructions
supplied with your IntelliPAP or SleepCube fl ow generator device.
• Use only accessories recommended by DeVilbiss.
• Always remove the water chamber from the humidifi er
cradle for fi lling.
• Use only tubing recommended or supplied with the fl ow
generator.
• If water has been spilled onto the cradle or it has been
submerged into water, unplug the power cord from the
power source immediately. Allow the device to completely
dry before use.
• If the device has been dropped, refer to the troubleshooting guide for instructions. Contact your homecare provider
for evaluation of the device.
• Never block the air openings of the cradle or chamber. Do
not insert any objects into any openings or tubes.
• For proper operation of the humidifi er, the device must be
placed on a fl at, level surface.
• Never place the system on a soft surface such as a bed or
couch during operation.
• This heated humidifi er is intended for single-patient
use only.
B. Travel
The DeVilbiss DV5HH humidifi er system
• Automatically accepts line voltages of 100-240 V, 50/60 Hz
• Needs power cord appropriate for area
o USA DV54/DV53D-606
o Europe, except UK DV54/
DV53D-607
o UK DV54/DV53D-608
o Australia DV54/
DV53D-609
o Set of 3 (UK, Europe, Australia) DV54/
DV53D-611
C. DC Power
The DeVilbiss DV5HH heated humidifi er system
• Will NOT operate, if the DC power is coming directly from
a 12V DC power source.
• Will operate, if the DC power coming to the PAP passes
through an inverter so that AC power is delivered to the
system.
• See DC Power information under the DV54/DV53 section
of this manual
D. Product Description
The DV5HH Standard Heated Humidifi er System is intended to
warm and add moisture to the pressurized air supplied to the
patient during the treatment of Obstructive Sleep Apnea (OSA).
The addition of heated humidifi cation to the air relieves dryness and irritation to the patient’s airway during OSA therapy.
The heated humidifi er is used in conjunction with the DV5X
series PAP devices and consists of a humidifi er chamber and
humidifi er heater.
The humidifi er chamber holds enough water for a minimum of 8 hours of operation, with the heating unit at the
maximum temperature setting at ambient conditions of
23°C and 25% R.H. with a system fl ow rate of 60 L/Min.
The chamber slides out of the unit for cleaning and fi lling,
without adjusting tubing connections. The chamber’s
halves separate for easy cleaning but, when assembled,
maintain a leak free seal to a maximum operating pressure
of 30 cmH2O.
Heat transferred from the humidifi er heater to the humidifi er chamber raises the effi ciency of the DV5HH system. The
patient controls the heater plate temperature using the up/
down arrow keypad keys on the attached PAP device to provide the appropriate level of humidifi cation depending upon
environmental conditions and individual preference.
LT-2026
23
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DV5HH
The heated humidifi er connects mechanically and electrically
to a DV5X series PAP between the air stream going from the
PAP to the patient. The keypad on the PAP controls the heated
humidifi er’s output and ON/OFF functions. Before operation,
the humidifi er chamber is fi lled with water to a predefi ned
and visible water-fi ll level with the patient tubing and patient
interface attached to the outlet port on the heated humidifi er system.
During operation, the DV5X series PAP device routes AC
electrical power (100 – 240 VAC 50/60 Hz) to the heated
humidifi er’s drive circuitry, which is contained within the PAP
device. The drive circuitry directs the AC power to the heating
element on the heated humidifi er’s heater plate. A thermistor
on the heater plate provides continuous feedback back to the
control circuitry so that the temperature of the heater plate is
consistent with the setting selected via the PAP’s keypad. The
PAP’s internal switch-mode power supply routes DC electrical
power to the heater’s low-voltage circuitry.
The heated humidifi er’s heater plate transmits heat to the
chamber, and then to the water, through a heat transfer plate
located on the bottom of the humidifi er chamber. As the water is heated, its evaporation effi ciency increases. Air fl owing
into the humidifi er chamber from the PAP device is humidifi ed by the evaporation and is then transmitted to the patient
through the patient tubing and interface.
24
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A. Cleaning and Disinfection
See the DV5HH Instruction Guide (A-DV5HH) for information
on cleaning the humidifi er chamber and heater base.
The DV5HH Standard Heated Humidifi er is single patient use
only and therefore does not require disinfection.
B. Maintenance
The DV5HH Standard Heated Humidifi er System does not
require regular maintenance.
C. Testing
Since the DV5HH device is powered and controlled by the PAP,
it is important to determine which unit is at fault when there
is an issue with humidity/heat. Use the following procedures
to determine whether the DV5HH device or the PAP device is
faulty.
1. Connect the DV5HH device to a known good PAP device.
2. After turning the system on,
• if the LCD display does NOT show “Heat:XXX” on the
bottom line, proceed to the troubleshooting section.
• if the DV5HH device does NOT produce heat, proceed
to the troubleshooting section.
3. Connect the PAP to a known good DV5HH device, if the
LCD display does NOT show “Heat:XXX” on the bottom
line, proceed to the troubleshooting section.
If you detect excessive air or water leaks in the DV5HH system, proceed to the troubleshooting section.
13. Maintenance and Testing DV5HH
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25
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14. Troubleshooting
HEATER
Symptom Action
The PAP does not recognize the
heater. (With the PAP blower
ON, the PAP display does not
indicate Heat:xxx on the bottom line.)
Connect the heater to a known good PAP device, if one is available. If PAP display still does
not recognize the heater, replace the heater.
If a known good PAP device is not available, remove the PAP from the heater and check
the thermistor for resistance. The thermistor pins are located in the connector and are the
ones closest to each other. See image below. The resistance should be 10 K ohms +/- 1%
at 25° C (77°F). If open or shorted, replace the heater. See Service instructions. Alternatively: Replace the heater plate assembly, DV5H-607. If the resistance is in the correct range,
the issue is in the PAP device. Troubleshoot as indicated below.
Heater plate does not respond
to the PAP heat setting.
(With the PAP blower ON and
the heat setting at 1 or above,
the heater plate does not get
warm.)
Connect the heater to a known good PAP device, if one is available. If the heater still does
not respond to the heat setting, replace the heater.
If a known good PAP device is not available, connect the PAP, using the serial interface
cable DV54/DV53D-615, to a PC using a terminal program (such as Windows HyperTerminal, or equivalent) with Com settings 9600 baud, no parity, 8 data stop bits, 1 stop
bit, Flow Control set to none. Turn the PAP blower ON and increase the heat setting to
10 using the PAP keypad (UP key). In the terminal program, connect to the PAP device by
typing ‘ri’ followed by ENTER; then type ‘Ht’ followed by ENTER. Repeat the ‘Ht’ – ENTER
sequence every 2-3 minutes and verify that the returned value increases. If the value increases, the system is operating normally. If the value does not increase, remove the PAP
device from heater and measure the heater resistance. The heater terminals are the ones
diagonal to each other on the connector.
heater terminals
t
hermistor terminals
The resistance should be between 180 to 220 ohms; if not replace the heater. See Service
instructions. Alternatively: Replace the heater plate assembly, DV5H-607. If the resistance
is in the correct range, the issue is in the PAP device. Troubleshoot as indicated below.
PAP
Symptom Action
The PAP does not recognize a
known good DV5HH heater.
(With the PAP blower ON, the
PAP display does not indicate
Heat:xxx on the bottom line.)
Check the wire harness on the PAP / heater connector; repair or replace, if needed. If
the wire harness and connections are correct, replace the control PC board. See Service
Instructions.
Heater plate on a known good
DV5HH heater does not respond
to the PAP heat setting.
(With the PAP blower ON and
the heat setting at 1 or above,
the heater plate does not get
warm.)
Check the wire harness on the PAP / heater connector; repair or replace, if needed. If
the wire harness and connections are correct, replace the control PC board. See Service
Instructions.
MANIFOLD and O-RING
Symptom Action
Excessive air leak Remove the humidifi er chamber. Inspect the manifold in the heater base and replace, if
torn or worn. Inspect the O-Ring in the humidifi er chamber and replace, if worn or missing.
Water leak from the humidifi er
chamber.
Remove the humidifi er chamber. Inspect the chamber for cracks in the plastic or water leaking from the heat transfer plate. If cracks or transfer plate leaks are found, replace the water
chamber. Inspect the O-Ring in the humidifi er chamber and replace, if worn or missing.
DV5HH
26
LT-2026
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A. Removing the DV5HH base cover
1. Remove the humidifi er chamber from the DV5HH base.
2. Push the release button (Fig. 1) on the DV5HH base and
lift the PAP device off the heater base and set aside in a
safe place.
3. Remove two T-10 screws from the top cover of the heater
base.
4. Turn the base over so that the bottom of the unit faces up
and remove four T-10 screws.
5. Lift the bottom cover off the unit
6. Remove the fi nal T-10 screw beside the wire harness clip.
(Fig. 2)
7. Hold the heater plate onto the base and turn the unit over.
8. Gently pull the top of the unit off the chassis and carefully
tilt the top without pulling the wire harness out of the
connector.
9. Carefully release the wire harness from the harness clip.
Reposition the heater plate so that the orange side is facing the harness clip and carefully push the heater plate
through the opening. (Fig. 3)
B. Replacing the DV5HH base cover
1. Position the heater plate so that the orange side is fac-
ing the harness clip and carefully push the heater plate
through the opening in the base. See image above.
2. Hold the heater plate onto the base and carefully insert
the harness wires, two at a time, into the harness clip. See
image above.
3. Install the top of the base onto the heater chassis with the
wire harness and manifold clear of all edges and the latch
working smooth and free. Fasten top to chassis with two
T-10 screws.
4. Holding the heater plate onto the base, turn the unit over
and position heater plate into the shallow opening with
the metal side facing down and the orange plastic side
facing up. Move the harness wires between wire guides.
(Fig. 4)
5. Replace the T-10 screw beside the wire harness clip.
6. Verify that the silicone spacer is in place on the inside of
the bottom cover. (Fig. 5)
7. Install the cover onto the bottom of the unit matching the
edges. Replace the 4 remaining T-10 screws in the bottom
cover.
8. With the air supply support plug attached to the back of
the PAP device, place the front of the PAP onto the front
of the heater base against the brackets and push the back
of the PAP down so that the latch closes and the electrical
connector is tight.
9. Slide the humidifi er chamber into the heater base until it
clicks into place.
DV5HH
1
harness
clip
T-10
screw
2
3
4
LT-2026
27
EN
DV5HH
spring post
latch control
screw post
latch retainer
short leg
8
6
rattails
7
5
C. Removing and replacing silicone
manifold
1. Remove the cover as described above.
2. Squeeze the inlet port on the silicone manifold and push
the port down into the hole in the top cover, gently releasing the manifold from all other connections. Discard the
manifold or set aside in a safe place, if returning to the
unit. (Fig. 6)
3. To replace, pinch the inlet port coupler on the replacement
silicone manifold and insert it, from the inside of the cover,
through the cover hole so that the coupler collar is fully
and evenly positioned on the outside of the cover.
4. Press the manifold body into place and insert a fi nger into
each of the rectangular openings, pressing the manifold’s
rattails through the slots in the top cover until they are
fully seated. (Fig. 7)
5. Replace the cover as described above.
D. Removing and replacing the latch
1. Remove the cover and silicone manifold as described
above.
2. Raise the latch control away from the top cover so that it
lifts the attached spring. Remove the spring from the latch
and discard or set aside in a safe place, if returning it to the
unit. (Fig. 8)
3. Still holding the latch control in a raised position, push
it into the latch retainer and rotate the latch so that the
spring post faces up. Gently push the short leg of the latch
up and through the slot in the cover. Discard faulty latch.
4. Orient the replacement latch over the bottom side of the
top cover so that short leg of the latch is over the slot near
the screw post and the spring post is facing up.
5. Insert the latch into the slot by rotating the latch stem
back toward the screw post and gently applying pressure
to the short leg until it fi ts through the slot.
6. Place one end of the spring over the spring post and insert
the other end into the channel on the cover by slightly
compressing the spring. Push the latch control several
times to ensure that the system is confi gured properly.
7. Replace the silicone manifold and cover as described
above.
28
LT-2026
EN
Humidity Output (in the operating fl ow range) ≥10 mgH2O/L air
Chamber/Cradle Dimensions
Size 2.6” H x 6.3” W x 8.4” D (6.6 cm x16.0 cm x 21.3cm)
Weight 1.75 lbs. (0.794 Kg)
Elec trical Rating:
Electrical Supply Frequency 50/60 Hz
Power Consumption 85 Watts
Voltage and Current
DV5HH 100-240VAC, 0.95 A
Heater Plate Cutout 152°C (305°F)
Power/Temperature Control Setting of 1 (minimum) to 10 (maximum)
Heater Plate Temperature approx. 29°C to approx. 65°C (84°F to 149°F)
Operating, Transport & Storage
Operating Temperature Range 41°F to 104°F (5°C to 40°C)
Operating Humidity Range 0 to 95% R.H. non-condensing
Operating Atmospheric Pressure Range 70.0 – 106.0 kPA
Transport & Storage Temperature Range -40°F to 158°F (-40°C to +70°C)
Transport & Storage Humidity Range 0 to 95% R.H. non-condensing
Transport & Storage Atmospheric Pressure Range 50.0 – 106.0 kPA
Class II Equipment; Type BF Applied Parts; Continuous Operation
IPX1, Drip-proof vertical
16. Unit Specifications DV5HH
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