GGM VH-2600 User manual

GGM
Respiratory Gas Humidifier
VH-2600/VH-2600A
Respiratory Gas Humidifier
Technical Manual
REV A 2017/06/09
Manufacturer: Great Group Medical Co., Ltd.
Address: No.168, Xingong 2nd Rd., Tianzhong Township,
Changhua County 52046, Taiwan (R.O.C.)
Tel: [phone] Fax: [phone]
E-mail: [e-mail]
Web: www.greatgroup.com.tw
ISO 13485 / CE 2460 / GMP

1
Manual Revision History
REVISIONE
DATA
DESCRIPTION
REV A 2017-06-09 RELEASE
NOTE：
1. Great Group Medical Co., Ltd. has a policy of continued product improvement and reserve the right to
change specifications without notice.
Revision History
VH/2600/VH-2600A humidifier. firmware and hardware version of the record as shown in the table.
Operation of the machine should pay attention to the use of version, the version of the operation may be
different.
VH-2600
PCB Version Data Serial number DESCRIOPTION
P:BC23024F12210
D:BC31013A12210
YY MMPXXX
YY MMDXXX P:2014/03
D:2012/11 GGCVV CC YY MM XXX New issue
VH-2600A
PCB Version Data Serial number DESCRIOPTION
P:BC23024F12210
D:BC31013A12210
YY MMPXXX
YY MMDXXX P:2014/03
D:2012/11 GGDVV CC YY MM XXX New issue
Description: YY：Year；MM：Month；XXX：serial number；VV：voltage；CC：country。
VH-2600
Version DESCRIOPTION Date
V2.00 New issue 2010/11
V2.10 Added Heater Wire low impedance detection. 2011/01
V2.22 Added RS-232 debug function. 2011/06
V2.24 Revise Airway temp Low Alarm of the mute time from 3
to 10 minutes. 2011/09
VH-2600A
Version DESCRIOPTION Date
V1.00 New issue 2012/04
V1.01 Chamber temp setting range 36~40 change to 34~40 2012/09

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Contents
Manual Revision History...................................................................................................................................1
Revision History ................................................................................................................................................1
1. Introduction....................................................................................................................................................4
1.1. About This Manual .............................................................................................................................4
1.2. Glossary..............................................................................................................................................4
1.3. Definitions...........................................................................................................................................5
1.4. Product Application ............................................................................................................................5
1.5. Humidifier Symbol definition.............................................................................................................6
2. Product Specifications ...................................................................................................................................6
2.1. Mechanical..........................................................................................................................................6
2.2. Electrical Rating..................................................................................................................................6
2.3. Temperature Control Range:...............................................................................................................6
2.3.1. Temperature .............................................................................................................................6
2.3.2. Alarm Parameters:....................................................................................................................7
2.4. Performance........................................................................................................................................7
2.5. Operating, Transport and Storage Environment.................................................................................8
2.6. Standards Compliance ........................................................................................................................8
3. Explanation of Controls and Indicators .........................................................................................................8
3.1. Humidifier Operation..........................................................................................................................8
3.2. Power on Self-check...........................................................................................................................8
3.3. Front Panel..........................................................................................................................................9
3.4. Display..............................................................................................................................................11
3.5. Flow Chart ........................................................................................................................................12
3.5.1. Flow Chart for VH-2600........................................................................................................12
3.5.2. Flow Chart for VH-2600A.....................................................................................................13
4. Maintenance Schedule.................................................................................................................................13
4.1. Maintenance Schedule......................................................................................................................13
4.1.1. Humidifier..............................................................................................................................13
4.1.2. Temperature Probe.................................................................................................................14
4.1.3. Heater Wire Adapter ..............................................................................................................14
4.1.4. Mains Plug.............................................................................................................................14
4.1.5. Safety .....................................................................................................................................15
4.1.6. Breathing Circuit....................................................................................................................15
5. Alarm and Troubleshooting..........................................................................................................................15
5.1. Alarm Indicator.................................................................................................................................15
5.2. Troubleshooting ................................................................................................................................17
5.2.1. Low Temperature...................................................................................................................17
5.2.2. High Temperature ..................................................................................................................17
5.2.3. Temperature Fluctuating........................................................................................................17
5.2.4. Excessive Water in Circuit.....................................................................................................18

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5.2.5. Low Humidity........................................................................................................................18
5.2.6. Alarms....................................................................................................................................18
5.2.7. Temperature Display..............................................................................................................19
5.2.8. Breathing Circuit Leak...........................................................................................................19
5.2.9. External Water Leak...............................................................................................................19
6. Servicing Procedures ...................................................................................................................................20
6.1. General Precautions..........................................................................................................................20
6.2. Disassemble ......................................................................................................................................20
6.2.1. Opening the Case...................................................................................................................20
6.2.2. Replacing Fuses.....................................................................................................................21
6.2.3. Resetting the Thermal Cutout................................................................................................22
6.2.4. Replacing the Mains Cable....................................................................................................22
6.2.5. Replacement of Printed Circuit Boards (PCBs).....................................................................23
6.2.6. Replacing the Termistor.........................................................................................................23
6.2.7. Checking the heater plate element.........................................................................................24
6.2.8. Replacing the Thermal Cutout...............................................................................................25
6.2.9. Closing the Case ....................................................................................................................25
7. Performance Testing ....................................................................................................................................26
7.1. Humidifier Performance Testing.......................................................................................................26
7.1.1. Humidifier Calibration Check................................................................................................26
7.1.2. Humidifier Display Check.....................................................................................................26
7.1.3. Humidifier Voltage Calibration Check ..................................................................................26
7.1.4. Humidifier Warm-up and Control Check...............................................................................26
7.2. Humidifier Warm-up and Control Check..........................................................................................26
7.3. Temperature accuracy calibration.....................................................................................................26
8. Recommended Maintenance Checklist........................................................................................................27
8.1. Humidifier Check (Annually)...........................................................................................................27
9. Exploded Diagram.......................................................................................................................................27
9.1. Heater Plate.......................................................................................................................................27
9.2. VH-2600 Exploded Diagram............................................................................................................28
9.3. VH-2600A Exploded Diagram..........................................................................................................28

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1. Introduction
1.1. About This Manual
This manual is intended for qualified service personnel who will perform maintenance and servicing on the
Great Group Medical Co., Ltd. VH-2600/VH-2600A Respiratory Humidifier. This manual covers the
product specifications, includes a maintenance schedule, and provides the necessary information required for
servicing.
NOTE: Some software may not be available in your country. Refer to your local Great Group Medical Co.,
Ltd. representative for the appropriate software version. Maintenance procedures should be carried out at
regular intervals (as recommended in the maintenance schedule 8), to ensure that the humidifier and its
accessories are working correctly.
If a fault should occur with the humidifier, follow the troubleshooting guide (section 5.2) in order to find the
most likely cause. If the unit requires servicing, make sure the servicing procedures are followed in order to
prevent damage to the humidifier. After service, or as part of the maintenance schedule, a humidifier
performance check should be completed.
Due to the nature of the electronics contained within this humidifier, it is not recommended that the printed
circuit boards be serviced at component level.
1.2. Glossary
Chamber
Device that allows gas to be to be heated and humidified by passing it over heated
water.
Temperature Probe Sensor assembly for measuring gas temperature.
Airway Probe Sensor assembly for measuring gas temperature at the end of the inspiratory limb.
Chamber Probe
Sensor assembly for measuring gas flow and temperature at the outlet of the
humidification chamber.
Thermistor Atemperature sensitive resistor placed inside the chamber and airway probes.
Chamber Set Point The humidifier is expected to remain at chamber temperature.
Airway Set Point The humidifier is expected to remain at airway temperature.
Heater Wire Adapter Electrical connector between the breathing tube and the humidifier.
Breathing Circuit Tubing that carries respiratory gases to and from the patient.
Dual heated
Breathing Circuit Wire inside the breathing circuit which heats the respiratory gases.
Single heated
Breathing Circuit Wire inside the inspiratory tube which heats the respiratory gases.
PCB Printed Circuit Board.
Heater Wire Wire inside the breathing tube which heats the respiratory gases.
Inspiratory Limb The section of the breathing circuit that takes the inspired gases to the patient.
Expiratory Limb The section of the breathing circuit that takes the expired gases to the patient.

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1.3. Definitions
NOTE: Possible be misunderstood or ignored the steps, to provide additional information.
Warning: indicates that a situation may occur which is potentially harmful to the patient or user.
Caution: indicates a condition that may lead to equipment damage, malfunction, or inaccurate operation.
1.4. ProductApplication
The unit is humidifier for hospital in the Intensve Care Unit (ICU). It’s used to provide humidity by
breathing circuit or mask for the patient.
Please refer to the list of Respiratory Humidification Products or local Giant Medical Materials Great Group
Medical Co., Ltd. for a list of approved accessories.
Warning：
The use of breathing circuits, chambers and other accessories which are not authorized by GGM may
cause malfunction, damages or injuries.
Make sure the invasive mode is set for patients having bypass airways.
The unit’s power cord only be connected medical grade power socket.
Before servicing, always disconnect the supply.
When installing the humidifier close to the patient, make sure that the humidifier is securely fastened
and lower than the patient.
Know adverse effects on the performance and safety of the humidification system when exposed to, for
electro cautery, electro surgery, defibrillation, X- ray (gamma radiation), infrared radiation, conducted
transient magnetic fields including magnetic resonance imaging (MRI), and radiofrequency
interference.
Make sure the temperature probes are connected correct.
The user must check safety performance of the unit, to ensure its complete work function well.
Make sure the power supply is stabilize.

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1.5. Humidifier Symbol definition
Type BF
Consult instruction
for use
Caution Consult
accompanying
Drip Proof
Alternating
Current
Warn Electrical
shook hazard
Warn Surface
temperature
Ground Protection On (Power) Off (Power) Do not reuse Do not throw
away
Notified Body
2. Product Specifications
2.1. Mechanical
Dimensions: W135mm x D170mm x H156mm (without chamber fitted)
Weight: 2.9 kg (without a chamber fitted)
2.2. Electrical Rating
Model Number Supply Voltage Supply Current
VH-2600-115
VH-2600-230
VH-2600A-115
VH-2600A-230
AC 115 V
AC 230 V
AC 115 V
AC 230 V
2.0 A Max
1.0 A Max
2.0 A Max
1.0 A Max
Supply Frequency: 50 / 60 Hz
Heater Plate Capacity: 150W, maximum temperature 110°C
Heater Wire: 60W Max
Heater Wire Supply: 22 ±3 V~
Safety protection
Over current protection: 115V/3A (fast burn type); 230V/1.5A(fast burn type).
Over heat protection : 115±3°C thermostat (manual rest type).
2.3. Temperature Control Range:
2.3.1. Temperature
Display: 4 digit 14 segment LED
Range: 5.0 to 80.0°C, Accuracy: ±0.3°C (in 25.0 - 45.0°C temperature range)

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VH-2600
Airway set Point: 31 - 40
°
C (default 39
℃
)
Chamber set Point: 31-40°C(default 37℃, limited toAirway set Point -5 to +2℃)
VH-2600A
Heater Wire Circuit
Invasive mode
Airway Set Point:36~40 (default:40°C)
Chamber Set Point:36~40 ( default :37°C)ver1.00
Chamber Set Point:34~40 ( default :37°C)ver1.01
Non –Invasive
Airway Set Point:31~35 (defaul:34°C)
Chamber Set Point:31~35 (default :31°C)
Non-Heater Wire Circuit:
Invasive mode: Airway Set Point:36~38 (default:37°C)
(chamber temperature limited to 66 °C)
Non –Invasive: Airway Set Point:30~32 (default :31°C)
(chamber temperature limited to 66 °C)
2.3.2. Alarm Parameters:
Heater Wire Circuit:
- High Airway Alarm: An immediate, audible alarm at a displayed temperature of 41°C or if the airway
temperature exceeds 42°C.
- Low Airway Alarm: An audible alarm between 10 minutes @29.5°C, and 60 minutes @34.5°C
- High Humidity Alarm: An audible alarm if the humidity temperature exceeds 41°C.
- Low Humidity Alarm: An audible alarm between 10 minutes @26°C.
Non-Heater Wire Circuit:
- High Airway Alarm: An audible alarm if temperature exceeds 41°C
- Low Airway Alarm: An audible alarm if temperature descends @29.5°C in invasive mode, or @26°C
non-invasive mode
- High Humidity Alarm: Light will twinkle but no alarm if the humidity temperature exceeds 66°C.
- Low Humidity Alarm: An audible alarm between 10 minutes @26°C.
2.4. Performance
Recommended ambient temperature range: 18-26°C.
Recommended Flow Range:
Invasive Mode: up to 60 L/min, Noninvasive Mode : up to 120 L/min.
Refer to breathing circuit specifications for minimum flow.
Humidity Performance: Invasive Mode: > 33 mg/L, Noninvasive Mode: > 10 mg/L.
Warm-up time: Less than 30 minutes.
Maximum Operating Pressure: 20 kPa, gas leakage at max. pressure < 50 mL/minute.

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2.5. Operating, Transport and Storage Environment
Operating Transport Storage
Temperature 18- 26°C(64.4-78.8°F) -10- 50°C (14-122°F) -10- 50°C (14-122°F)
Relative humidity
30
％
-75
％
30
％
-95
％
30
％
-95
％
Atmospheric
pressure 70kPa-106kPa 50kPa-106kPa 50kPa-106kPa
Altitude 0-3000m(9000ft) 0-3000m(9000ft) 0-3000m(9000ft)
2.6. Standards Compliance
Safety requirements of IEC60601-1, IEC60601-1-2
Design requirement of ISO8185
Electric Shock Protection: Class I
Applied Part type BF
Water proof and Drip proof: IPX1
3. Explanation of Controls and Indicators
3.1. Humidifier Operation
This unit is designed to add heat and moisture to respiratory gases. The gas is passed through a
humidification chamber where it is warmed and humidified.
This unit has two heating systems. The first is a heater plate, which heats the water contained in the
humidification chamber, humidifying the air passing through it. The humidifier monitors the temperature of
the gas at the chamber outlet with the chamber probe, and controls the amount of power delivered to the
heater plate, in order to maintain the chamber set point.
Under normal conditions the gas is heated to 37 °C in the invasive mode, 31 °C for the noninvasive mode.
3.2. Power on Self-check
The purpose to internal inspection when turn on the unit.
Program of Power on Self-check:
1. Check the heater wire fuse is well.
2. Check the heater plate over heat.
3. Check the heater plate temperature probe open or short.
4. Check the heater wire adapter open or short.
5. Check the airway temperature probe open or short.
6. Check the chamber temperature probe open or short.
7. Check the heater wire open or short.
Visual / Audio Test Sequence：
The LED will light up and the 15-segment display will flash and the buzzer will be given Be-Be When the
power switch is on.

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3.3. Front Panel VH-2600
When this button is pressed power to the heater wire is turned on and the green indicator
light will be illuminated. For non-heated wire circuits, the indicator light must be off. An
alarm will occur if the heater wire function is turned off while a heated wire circuit is
connected.
To adjust the set temperature Up, each press of adjustment 0.5 ℃.
To adjust the set temperature Down, each press of adjustment 0.5 ℃.
To select the parameter to display “Airway” to ”Chamber”.
Mutes all audible alarms.
Normal mute time is 3 minutes. The alarm condition indicator
lights will continue to flash until the condition is rectified.