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Nidek Medical Products, Inc®

Mark5 Nuvo® [M5C5] Oxygen

Concentrator Service Manual

Nidek Medical Products, Inc. 3949 Valley East Industrial Drive Birmingham, Alabama 35217 USA

Telephone: (205) 856-7200 • 24-Hour Fax: (205) 856-0533

Nidek Medical is a trademark of Nidek Medical Products, Inc.

Mark5 Nuvo® and M5C5 are registered trademarks of Nidek Medical Products, Inc.

Section 6.0

Troubleshooting

Appendices

●the electrical installation of the corresponding premises complies with appropriate regulations and codes,

●the device is used in accordance with the instructions for its use.

If the replacement parts used for periodic servicing by an approved technician do not comply with the manufacturer’s specifications, the manufacturer is absolved of all liability in the event of an incident.

Do not open the equipment when it is powered on: risk of electrocution.

This device complies with the requirements of the FDA Quality System Regulation and EU Directive 93/42/EEC, but its operation may be affected by the use in the surrounding area of appliances such as diathermy, high frequency electro-surgical instruments, defibrillators, short wave treatment appliances, cell-phones, CB devices and other portables, microwave ovens, induction hot plates or remote control toys, and more generally, by electromagnetic interference exceeding the levels specified in standard IEC(EN) 60601-1-2.

1.0Introduction

1.1Home Service Provider Responsibility

All Home Service Providers of the Nidek Medical Mark5 Nuvo® Oxygen Concentrator must assume responsibilities for handling, operational check-out, patient instruction, and maintenance. These responsibilities are outlined below and throughout this manual.

WARNING

Mark5 Nuvo units must not be used for or with any life-supporting or life sustaining applications. Patients unable to communicate discomfort while using this device may require additional monitoring. Advise patients to immediately notify their Home Service Provider(s) and/or physician(s) in case of an alarm or any discomfort.

As a Home Service Provider, you must do all of the following:

●Inspect the condition of each Mark5 Nuvo® unit immediately upon delivery to your business location. Note any sign of damage, external or internal, on the delivery receipt, and report it directly to both the freight company and Nidek Medical Products, Inc. immediately.

●Check the operation of each Mark5 Nuvo® before delivery to a patient.

Always operate the unit for a reasonable length of time and check that the oxygen concentration level is within specifications as referred to in Section 2.4. Test the battery and power disconnect alarm as described in Section 2.3 of this manual.

●Deliver Mark5 Nuvo® units only to patients authorized by a physician’s prescription. The Mark5 Nuvo® must not be used as a life-supporting or life sustaining device. A backup supply of oxygen must be available.

●Instruct patients how to use the Mark5 Nuvo® in conjunction with the

Patient Manual.

●Instruct patients to notify their physicians and/or Home Service Providers if they experience any signs of discomfort.

●Instruct each patient how to perform routine maintenance of the cabinet air filter and how to check the alarm system battery. (Refer to Section 3.2.)

Be available to service each patient at any time. Maintain the Mark5 Nuvo® in accordance with Section 4.0.

Repair components and replace parts only as outlined in this manual. Use only Nidek Medical parts for replacement in Mark5 Nuvo® Oxygen Concentrators.

●Refer to the Mark5 Nuvo® Product Warranty if parts replacement is required within the warranty period.

1.2Important Notice and Symbol Explanations

As you read the manual, pay special attention to the WARNING, CAUTION, and NOTE messages. They identify safety guidelines or other important information as follows:

The following harmonized symbols (pictograms), used for non-English language countries, will be located on the exterior of the Mark5 Nuvo® unit:

Read the accompanying documents; particularly the patient operating guide.

Store, ship and use the device in an upright condition.

No smoking within five feet of this device, oxygen-carrying tubing, or accessories.

Indicates an alarm signal.

delivers up to 95% oxygen concentration at flow rates from 1 to 5 l/min. The remaining constituents of the product gas stream are nitrogen and argon, both of which are part of the air we breathe, are inert and are completely safe.

2.2Operational Check

Nidek Medical runs each device through a burn in period and tests every Mark5 Nuvo® Oxygen Concentrator thoroughly after manufacture before releasing for shipment. As the home service provider, it is your responsibility to perform the following test to ensure that no damage occurred in shipping or handling.

1.Open and inspect all concentrator cartons upon receipt. Unpack each unit and remove it from its carton. Inspect the unit itself for damage. If the exterior of the carton is damaged, or the unit itself is damaged, note it on the freight bill signed by the driver.

●Before plugging the unit into the wall outlet, actuate the I/0

(ON/OFF) switch to the I (ON) position and note that the audible alarm sounds continuously. (See Section 2.3). Move the switch to the 0 (OFF) position.

2.Plug in the power cord of the unit, and set the I/0 (ON/OFF) switch to the I (ON) position. Check to see that the following occurs:

●The compressor runs, listen for the sound.

●Exhaust air flows out of the bottom of the unit.

●OPTIONAL for Units Equipped with Oxygen Concentration Status

Indicator (OCSI): The OCSI green light remains off until the oxygen concentration reaches 85% ± 3% (82% ± 2% for 50 Hz units) (approximately two minutes).

3.Turn the flow meter adjustment knob counterclockwise until it stops (wide open). The flow meter should register in excess of 5.5 liters/min. If not, refer to Section 5.8 to adjust the product regulator.

4 Perform an oxygen concentration test, as described in Section 2.4.

2.3Alarm System

The Mark5 Nuvo® Oxygen Concentrator is equipped with a battery-powered alarm system, which sounds a continuous and loud alarm when a power failure occurs or when one or more cycle variables are not within specification. It sounds an alarm if the high or low pressure indicators are activated or if the optional OCSI detects lower than predetermined levels of oxygen concentration. The alarm remains on until you correct the alarm condition or you set the I/0 (ON/OFF) switch to the 0 (OFF) position. Refer to Section 6.0 for a list of probable alarm causes,

2.3.1 Battery Test

The Mark5 Nuvo® battery can be checked by observing that the continuous alarm sounds when the I/0 (ON/OFF) switch is moved to the I (ON) position when the unit is unplugged from the wall outlet.

2.3.2 Power Failure Alarm Test

To test the power failure alarm, perform the following actions:

Unplug the power cord from the wall outlet, and set the I/0 (ON/OFF) switch to the I (ON) position.

This should immediately activate the audible alarm. If it does not, refer to the troubleshooting chart in Section 6.0 of this manual.

2.4Oxygen Concentration Test and Specification

To ensure that the output of oxygen from the device is within specification, you must perform an oxygen concentration test. Test the unit upon delivery to a patient and at periodic intervals. Home Service Providers, based on their expertise and documentation, may establish and implement their own plans for checking oxygen concentration. The interval established may be longer or shorter than 90 days, which is Nidek Medical’s default time period for providers who do not choose to establish their own plan.

1.If an oxygen humidifier bottle is used, remove it from the oxygen outlet.

2.Connect a calibrated oxygen concentration analyzer to the oxygen outlet.

3.Set the I/0 (ON/OFF) power switch to the I (ON) position. (It takes approximately five minutes for the oxygen concentration to stabilize.) Take oxygen concentration readings over a period of several minutes to reduce any cyclic variations

4.Verify that the product flow rate delivered by the unit matches the patient’s prescription and does not exceed the capacity of the unit.

5.Disconnect the oxygen analyzer, and reconnect the humidifier bottle (if used) and any other equipment / accessories that may be required.

6.Adjust the flow meter adjustment knob to the prescribed flow rate.

NOTE

Do not measure oxygen concentration output after the product stream passes through a humidifier bottle, erroneous readings will result and your oxygen concentration measuring device might be damaged.

Nidek Medical Mark5 Nuvo® Concentration Specifications

3.0Patient Instructions

3.1General Instructions

It is important that patients thoroughly understand how to operate the Nidek Medical Mark5 Nuvo® unit. This enables proper treatment as prescribed by a qualified, licensed physician. You must explain that the purpose of this therapy is to alleviate symptoms. If patients experience any discomfort or the unit alarms, they must notify their Home Service Provider and/or physician immediately. You, as the Home Service Provider, are responsible to see that each patient receives the Patient Manual. Explain each step in the operation of the unit to the patient in reference to this manual.

3.2Routine Maintenance by the Patient

To ensure accurate output and efficient operation of the unit, the patient must perform two simple routine maintenance tasks:

•Clean the cabinet air filter

•Check the alarm system battery

3.2.1Cleaning the Cabinet Air Filter

NOTE:

The patient must clean this filter weekly, as described below. The filter may require daily cleaning if the Mark5 Nuvo® unit operates in a harsh environment such as a house heated by wood, kerosene, or oil, or one with excessive cigarette smoke.

1Remove the dirty cabinet air filter from the back of the Mark5 Nuvo® unit.

2Wash the dirty filter in warm water with household detergent, and rinse.

3Use a soft absorbent towel to remove excess water.

4Reinstall the clean air filter on the grille in the back of the unit.

3.2.2 Checking the Alarm System Battery

See Procedure described in Paragraph 2.3.1

4.0Home Service Provider Maintenance

4.1Routine Maintenance

The Mark5 Nuvo® unit has two filters and a 9-volt battery that require scheduled maintenance and replacement.

To ensure that the output of oxygen from the unit is within specification, you must perform an oxygen concentration test. Test the unit upon delivery to a patient and at periodic intervals. Home Service Providers, based on their expertise and documentation, may establish and implement their own practices for checking oxygen concentration. Consult Nidek Medical’s Service and Maintenance Log (A- 15) for the recommended intervals for testing.

Nidek Medical does not require preventive maintenance on the concentrator. You do not need to perform any maintenance as long as the Mark5 Nuvo® unit remains within specifications at the prescribed flow rate. (Refer to Section 2.4)

Cabinet Air Filter

The external cabinet air filter is located on the back of the unit, You can easily remove it by hand. Instruct the patient to clean this filter weekly. (Refer to Section 3.2.1.)

NOTE

The filter may require more frequent cleaning if the Mark5 Nuvo® unit operates in a harsh environment such as a house heated by wood, kerosene, or oil, or one with excessive cooking, cigarette smoke or atmospheric dust.

4.1.2 Final Product Filter Replacement

The final product filter does not require periodic replacement; it needs to be replaced only if it restricts oxygen flow. It is suggested that it be replaced whenever the sieve module is repaired or replaced and after the compressor is rebuilt.

1.Set the I/0 (ON/OFF) switch to the 0 (OFF) position, and unplug the power cord.

2.Remove the cabinet back to locate the final product filter.

NOTE: Observe the position of the filter before removal.

3.Separate the silicone tubing from both sides of the filter.

4.Install the new filter with the inlet side in the same position as before. Push the tubing together so that it overlaps the barbs of the final product filter

5.2.5 Caster Replacement

The casters are a push in type that does not require any fastener. Lay the device on its back to access the casters from the bottom. Pull them straight out away from the bottom.

5.3Compressor

The compressor is the pump within the oxygen concentrator that supplies air to the separation process performed by the sieve beds. The pressure generated by the compressor forces oxygen to flow out of the top of the sieve columns.

The compressor is the likely cause of two potential specific problems:

a.An insufficient amount of air is supplied to the process, and

b.An excessive sound level.

● Air Supply

Compressor output refers to how much compressed air the compressor can produce. This depends upon the model of the compressor, length of stroke, piston diameter, speed of rotation and condition of seals. The cup seals form the seal between the piston and the cylinder wall. As the cup seals wear, the output begins to gradually decrease. This reduction in compressor output results in less air, and thus less oxygen, entering the sieve beds. Therefore, the production of oxygen decreases.

Because this drop in oxygen production occurs over a long period of time, preventive maintenance on the compressor is not required.

You can continue a patient’s therapy on the Mark5 Nuvo® unit as long as the oxygen concentration level at the prescribed liter flow rate is within Nidek Medical’s specification limits. Refer to Section 2.4.

Restrictor

Air

Filter

● Sound Level

The sound level is largely determined by the condition of the compressor’s bearings.

There are four bearings located within the compressor that allow the inner components of the compressor to rotate. If the bearings wear to the point that they become loose and noisy, the compressor becomes noticeably loud and needs servicing. The life of a compressor is determined primarily by its operating temperature. It is extremely important that the cabinet air filters are cleaned and replaced as required.

5.3.1 Compressor Replacement

Remove Compressor Assembly

To remove the compressor assembly for exchange, follow the steps listed below:

1.Set the unit’s I/0 (ON/OFF) switch to the 0 (OFF) position, and unplug the power cord.

2.Remove the cabinet back and front.

3.Disconnect the suction tube.

4.Disconnect the two compressor power cable leads and the two leads to the capacitor at the inline connector.

5.Remove the three screws that connect the compressor plate to the base of the unit, lift and slide out the compressor assembly.

6.Remove compressor from the plate by removing the four compressor bolts.

7.Remove tie wrap from compressor plate wiring harness.

8.Remove the heat exchanger tubing and fittings.

Mark 5 Nuvo® Lite Family

(Nuvo Lite and Nuvo Lite 3)

For models: 520, 525, 535, 920, 925, and 935

And serial numbers beginning 132-XXXXX

3949 Valley East Industrial Drive Birmingham, Alabama 35217 USA

Telephone: (205) 856-7200 • 24-Hour Fax: (205) 856-0533

Nidek Medical is a trademark of Nidek Medical Products, Inc. Mark 5 Nuvo® is a registered trademark of Nidek Medical Products, Inc

1.0 General Safety Warnings

This unit is not a life-support device. Geriatric, pediatric, or any other patient unable to communicate discomfort while using this device should receive additional monitoring.

This device supplies highly concentrated oxygen enriched product gas that promotes rapid burning.

DO NOT allow smoking or open flames within the same room of this device or the administration accessory (cannula).

Failure to observe this warning can result in severe fire, property damage, and / or cause physical injury or death.

Oxygen accelerates the combustion of flammable substances.

DO NOT use oil, grease, petroleum based or other flammable products on the device, the administration accessory (cannula) or the patient’s face / neck.

Only persons who have read and understood this entire manual should be allowed to service the device.

CONTRAINDICATIONS — Those who continue to smoke (because of the increased fire risk and the probability that the poorer prognosis by smoking will offset the treatment benefit).

Federal Law (US) restricts this device to sale by, or on the order of, a licensed

physician. This oxygen concentrator should be used only under the supervision

Only

of a licensed physician.

2.0 Glossary of Symbols

ON (Power switched on)

OFF (Power switched off)

Manufacturer Name and Address

Type B Device

Class II Protection

IPX1 Protection from vertically falling water drops

Do Not Expose to Open Flames

Do Not Expose to Oil or Grease

Tools Required / Technician Only

Refer to Technical Information / Service Manual

Refer to Instructions for Use / User’s Guide

Keep in Vertical Position

FRAGILE – Handle with Care

Visual Alarm Indicator

WARNING – A hazard or unsafe practice that can result in serious injury or death if conditions are not avoided.

Caution — A hazard or unsafe practice that can result in minor injury and / or property damage if conditions are not avoided.

Note – Information important enough to emphasize or repeat

Consult your equipment provider for further information regarding altitudes of 2200 m to 4000m (7500 to 13000ft).

The device should be stored in a dry area, with an ambient temperature between -20°C to 60°C (0°F to 140°F) at 1595% relative humidity. It must be stored, transported and used in the vertical position only.

Oxygen concentration can be affected after prolonged periods of storage – check device before use.

3.3 Alarms and Safety Features

Each device is equipped with indicator lights (green and yellow) and auditory indicators to identify various operational modes. Devices manufactured prior to 2018 were equipped with red and yellow indicator lights. The alarm modes are described below:

The device has an audible alarm to warn the user of problems. In order that the alarm may be heard, the maximum distance that the user can move away from it must be determined to suit the surrounding noise level.

If any of the below alarm conditions occur, press the Power Switch to the “O” (OFF) position. Refer to the Troubleshooting Guide in §5.2 for the possible cause and solution.

No voltage detection: In the event of a loss of mains power, an intermittent audible alarm is activated and the green light is no longer illuminated.

Oxygen Concentration Status Indicator: If supplied, in the event that the oxygen concentration falls below the set point percentage, a continuous audible alarm and the yellow indicator light will actuate. The oxygen concentration monitor is an electronic module capable of checking the effective oxygen concentration supplied by the concentrator. When the device is started, the green indicator light will flash until the concentration set point is reached (approximately two minutes).

A solid green indicator light means the power is applied to the concentrator and that it is ready to provide oxygen enriched air to the patient.

No special maintenance is required. The alarm set-point is factory set and the setting cannot be adjusted. All OCSI models are set at 85% ± 3%.

Blocked Cannula detection: If supplied, the device has a Blockage Alarm. A continuous audible alarm and both indicator lights will be lit immediately in the event the flow of oxygen to patient becomes blocked.

Malfunction detection: If low pressure occurs due to a mechanical failure, the indicator light will flash yellow and a continuous audible alarm will actuate.

Thermal safety: The compressor motor is protected by a thermal switch situated in the stator winding (145 ± 5° C). One tubeaxial fan cools the compressor compartment.

Electrical protection:

•A 5A circuit breaker is incorporated into the front cabinet of all 230V models

•A 10A circuit breaker is incorporated into the front cabinet of all 115V models

•Class II devices with insulated casings (EN60601-1 standard)

Safety valve: This is fitted on the compressor outlet and is calibrated to 3.4 bar (50 psig).

Fire Break: This device is fitted with a metal fire break at the Oxygen Product Outlet. This break will keep fire from entering the device.

3.4 Device Performance and Specifications

The performance of the device (especially the oxygen concentration) is quoted at 21°C (70°F) and one atmosphere. The specifications may change with temperature and altitude.

*Weight dependent on model and features

In compliance with EN ISO 80601-2-69, the flow supplied is equal to the flow set on the flowmeter, accurate to within ± 10% or 200 ml/min, whichever is greater.

The variation of the maximum recommended flow does not exceed ± 10 % of the indicated value when a back pressure of 6.9 kPa (1 psig) is applied to the output of the device.

Complies with EN 60529:2001 + A2:2014 rating of IPX1; enclosure protects internal electrical components against vertically falling water drops.

Complies with EN 60601-1:2006 [11.6.3]; enclosure protects internal electrical components against spilling of a glass of water (i.e. contents of humidifier).

4.0Service Provider (Home / Clinic / Hospital)

4.1Responsibilities

Service Providers of the Mark 5 Nuvo Lite Family (Nuvo Lite and Nuvo Lite 3) Oxygen Concentrators must assume responsibilities for handling, operational testing, patient instruction, and maintenance. These responsibilities are outlined below and throughout this manual.

To ensure patient safety, use only after one or more settings have been individually determined or prescribed for the patient at their specific activity levels – AND – only use the accessories that were used when the settings were determined.

While undergoing oxygen therapy, if the patient feels discomfort or experiences a medical emergency, seek medical assistance immediately.

As a Service Provider, you should do all of the following:

•Inspect the condition of each device immediately upon delivery to your location. Note any sign of damage, on the delivery receipt, and immediately report it directly to both the freight company and Nidek Medical Products, Inc.

•Ensure the operation of each device before delivery to a patient by completing the “Operational Check” provided in §4.2.

•Ensure each device has been thoroughly cleaned, the cabinet filter has been cleaned or replaced, and the nasal cannula and tubing has been replaced before delivering the device to a new patient or between patients.

•Deliver device only to patients authorized by a physician’s prescription. The device must not be used as a life-supporting or life sustaining device.

•Ensure a backup supply of oxygen is available.

•Instruct patients and patient caregivers how to use the device in conjunction with the Instructions for Use (PN 2010-8401CE), including required routine maintenance and cleaning of the device and filters. See “Patient / Caregiver Instruction” provided in §4.3.

•Record and notify Nidek Medical of any and all complaints provided by the patient or patient caregiver.

oThe FDA defines a complaint as “any written, electronic, or oral communication that alleges deficiencies related to the identity, quality, durability, reliability, safety, effectiveness, or performance of a device after it is released for distribution.”

•Be available to service each patient at any time.

•Keep service records of each device. A form approved by Nidek Medical has been provided in Appendix A.

•Repair components and replace parts only as outlined in this manual. Use only Nidek Medical parts for replacement. Refer to the Product Warranty Statement if parts replacement is required within the warranty period.

4.2Operational Check

Nidek Medical runs each device through a burn in period and tests every device thoroughly after manufacture before releasing it for shipment. As the Service Provider, it is your responsibility to perform the following check to ensure that the device is operational.

1.Plug in the power cord of the unit, following the electrical characteristics noted on the technical label, and set the Power Switch to the I (ON) position. The compressor should begin running.

2.Once the device has been running for approximately ten minutes, verify the concentration is within specifications, the flow is accurate and the alarms are operational. For units equipped with the Oxygen

Concentration Status Indicator (OCSI) (models 525, 535, 925, 935), the green indicator light will flash until the oxygen concentration reaches 85% ± 3% (approximately two minutes).

a.Verify oxygen concentration by:

i.Connect a calibrated oxygen concentration analyzer to the oxygen outlet.

1.If an oxygen humidifier bottle is used, remove it from the oxygen outlet. The concentration readings of the product gas after it has passed through a humidifier bottle will be erroneous and can result in damage to your analyzer.

2.Oxygen analyzers are available for purchase from Nidek Medical (see §5.4 for testing equipment part numbers).

ii.Set the flow rate of the device to the prescribed rate of the patient.

iii.Record oxygen concentration readings over a period of several minutes to reduce any cyclic variations. These readings should fall within the specifications provided in §3.4.

1.If not, refer to the troubleshooting chart in §5.2 for possible causes and solutions.

b.Verify the flow is accurate by:

i.Connect a calibrated flow gauge to the oxygen outlet.

1.If an oxygen humidifier bottle is used, remove it from the oxygen outlet.

2.Gauges are available for purchase from Nidek Medical (see §5.4 for testing equipment part numbers).

ii.Turn the flow knob clockwise until it stops (wide open).

iii.The reading should indicate 5 liters/min. (models 520, 525, 920 and 925) or 3 liters/min (models 535 and 935).

1.If not, refer to §5.3.11 for adjusting the regulator, or refer to the troubleshooting chart in §5.2 for other possible causes and solutions.

c.Verify alarms are operational by:

i.No Voltage Alarm

1.Unplug the power cord from the wall outlet.

2.Set the Power Switch to the I (ON) position.

3.This should immediately activate the intermittent audible alarm and there should be no indicator lights actuated.

a.If it does not, refer to the troubleshooting chart in §5.2 for possible causes and solutions.

ii.Blockage Alarm

1.Adjust the Flow Knob to desired flow rate.

2.Block the oxygen flow at the patient outlet

3.This should immediately activate a continuous audible alarm and both indicator lights should be actuated.

a.If it does not, refer to the troubleshooting chart in §5.2 for possible causes and solutions.

4.3 Patient / Caregiver Instruction

It is important that the patient and/or caregiver thoroughly understands how to operate their device. This enables proper treatment as prescribed by a qualified, licensed physician. You must explain that the purpose of this therapy is to alleviate symptoms. If the patient experiences any discomfort or the unit alarm sounds, they must notify their Service Provider and/or physician immediately. You, as the Service Provider, are responsible to see that each patient receives the Instructions for Use (IFU) (PN 2010-8401CE) and understands how to operate, clean and maintain their device.

•Refer to §4.2 in the IFU for the Start-Up procedure.

•Refer to §4.3 in the IFU for the Shut Down procedure.

•Refer to §5.1 in the IFU for the Cleaning procedures of the device itself, the filters and the accessories.

•Refer to §5.2 in the IFU for the Maintenance procedure.

Refer to §5.3.3 and §5.3.4 of this manual for instruction on replacing the inlet and final product filters.

5.0 Service Technicians

The design of the Mark 5 Nuvo Lite Family (Nuvo Lite and Nuvo Lite 3) allows for easy access and removal of most components. This allows you to perform scheduled maintenance, repair, and replacement of parts with minimal time and effort.

•Refer to §5.2 for the Troubleshooting Chart for a list of problems, possible causes and solutions.

•Keep service records of each device. A form approved by Nidek Medical has been provided in Appendix A.

•Repair components and replace parts only as outlined in this manual. Use only Nidek Medical parts for replacement.

•Refer to the Product Warranty Statement if parts replacement is required within the warranty period.

•Analyzers and gauges are available for purchase from Nidek Medical, see §5.4 for part numbers.

For your safety, be sure to set the Power Switch to O (OFF) position and unplug the power cord before you service the device.

5.1 Testing and Troubleshooting

Before reviewing the troubleshooting chart, the following questions may be useful to isolate any malfunctions.

1.Does the concentrator turn on when the switch is activated?

2.Are the filters clean?

3.Connect an oxygen analyzer to the outlet fitting of the device. Set the flow to 2LPM, is the concentration greater than 90%? Set the flow at 5 LPM (or 3LPM for models 535 and 935), is the concentration between 87 and 95.5%?

4.Connect test pressure gauge to the outlet fitting of the unit. Does the pressure read 7.1 psig (49 kPa) ± 20%?

5.Perform an air pressure test (P1). Does the pressure cycle between 10-15 and 25-32 psig approximately (70103 and 172-220 kPa)?

a.Remove the upper cabinet back (see §5.3.1 for instructions).

b.Remove the air supply tubing going to the control valve and install the test port tee fitting. (See Figures 5.1.1 and 5.1.2 below for Normal Operating Configuration and Test Port Configuration.)

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• до Дверей
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