Direct Healthcare Services Dyna-Form Air Suresse 220DIO 4 pipe Service Procedures

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SERVICE PROCEDURES

Control Unit

220DIO 4 pipe

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Summary of Contents for Direct Healthcare Services Dyna-Form Air Suresse 220DIO 4 pipe

Page 1 SERVICE PROCEDURES Control Unit 220DIO 4 pipe...
Page 2: Table Of Contents
SERVICE PROCEDURES Contents 220DIO 4 pipe Control Unit Control Unit Internal Descriptions Basic System Checks Fuse Check and Replacement Printed Circuit Board (PCB) Check Printed Circuit Board (PCB) Replacement Standard Pressure Test Double Compressor Replacement Synchronous Motor Replacement Connector Plate Replacement Air Filter Maintenance Rubber Feet Replacement Hanging Hook Replacement...
Page 3 SERVICE PROCEDURES 220DIO 4 pipe Control Unit Malfunction of the Control Unit may be due to the failure of one The following section outlines the steps and of the replaceable electrical components of the Control Unit, procedures to follow if there is a suspected fault in including the double compressor, print circuit board and timing the Control Unit.
Page 4 SERVICE PROCEDURES 220DIO 4 pipe Control Unit The electronically controlled Control Unit provides the air supply can be easily disconnected and is designed to detach if pulled to the Mattress. The unit is operated by a digital touch membrane too ﬁrmly – protecting the internal wiring from damage. on the front display panel which controls eight comfort pressure The quality of the Control Unit underpins the reliability and settings;...
Page 5: Control Unit
SERVICE PROCEDURES Basic System Checks 220DIO 4 pipe Control Unit Before commencing any service procedure, the following basic checks should be completed to ensure that system fault or failure is not due to an oversight on behalf of the user. Set up the system and check the following: Ensure all power cords Check the Handle is Remove the Mattress...
Page 6: Fuse Check And Replacement
SERVICE PROCEDURES Fuse Check and Replacement 220DIO 4 pipe Control Unit Testing fuse for damage and replacing a blown fuse Control Unit failure may be the result of a blown fuse. Always check the fuse before opening the unit and performing any other internal component test procedures.
Page 7: Printed Circuit Board (Pcb) Check
SERVICE PROCEDURES Printed Circuit Board (PCB) Check 220DIO 4 pipe Control Unit Testing for a faulty circuit board by ‘piggybacking’ a working spare If the Control Unit still fails to operate after checking and replacing a damaged fuse, the next step is to test the Printed Circuit Board (PCB) for failure.
Page 8 SERVICE PROCEDURES Printed Circuit Board (PCB) Check 220DIO 4 pipe Control Unit Take the working spare Reconnect mains power, If the Control Unit still PCB and reconnect switch on the Control Unit does not operate, the unit all seven leads into the and check the Display Panel.
Page 9: Printed Circuit Board (Pcb) Replacement
SERVICE PROCEDURES Printed Circuit Board (PCB) Replacement 220DIO 4 pipe Control Unit Replacing a faulty circuit board Having established a fault with the PCB by following the Printed Circuit Board Check procedure detailed previously (steps 1 through 7), replace the faulty PCB with a new PCB. When handling the PCB, anti-static gloves (or other anti-static precautions) should be used to protect the PCB from static.
Page 10: Standard Pressure Test
SERVICE PROCEDURES Standard Pressure Test 220DIO 4 pipe Control Unit Testing airﬂow and checking for a faulty compressor The Control Unit double compressor is designed for long life, and backed by a two-year warranty from the Manufacturer, however compressor failure can occur and will require replacement. The Standard Pressure Test should be carried out to check the compressor is working at full operational capacity and that sufﬁcient airﬂow is being generated to maintain maximum Mattress speciﬁcations.
Page 11 SERVICE PROCEDURES Standard Pressure Test 220DIO 4 pipe Control Unit Base Air Flow Pressure mmHg >10 120> Reconnect the Control The table above summarises After the 30 minute Unit to mains power and the expected pressure and air “warm up” period switch on.
Page 12 SERVICE PROCEDURES Standard Pressure Test 220DIO 4 pipe Control Unit If air ﬂow measurements If all pressure and air ﬂow To close the Control Before closing the fail to meet the speciﬁed measurements met the Unit, ﬁrst disconnect the housing, make sure all minimum levels during any expected levels, the problem Pressure Test Equipment air...
Page 13: Double Compressor Replacement
SERVICE PROCEDURES Double Compressor Replacement 220DIO 4 pipe Control Unit Replacing a faulty compressor Having established a fault with the compressor by following the completing the Standard Pressure Test procedure detailed previously (steps 1 through 6), replace the faulty compressor with a new one. The following tools are Switch off power supply Using Wire Clippers (or...
Page 14 SERVICE PROCEDURES Compressor Replacement 220DIO 4 pipe Control Unit Visually check Reattach both Reconnect the Before closing the that each mount air pipes to each compressor power housing, make sure is attached and the double compressor, using gentle lead to the circuit board and all power leads and pipes compressor is correctly pressure to ensure a ﬁrm ﬁt.
Page 15: Synchronous Motor Replacement
SERVICE PROCEDURES Synchronous Motor Replacement 220DIO 4 pipe Control Unit Replacing a faulty synchronous motor The synchronous motor runs the rotovalve that operates the timing mechanism for the alternation cycle. If the rotovalve becomes worn or damaged it no longer spins smoothly and the unit will emit a distinct ‘grinding’ noise. If you hear an uncharacteristic noise from the motor when the Control Unit is switched on, the synchronous motor needs to be replaced.
Page 16 SERVICE PROCEDURES Synchronous Motor Replacement 220DIO 4 pipe Control Unit The rotovalve is made of two Gently lift the plastic Remove the spring and Using the socket plastic circular casings held rotovalve up and over the place it in a safe place for wrench, unscrew the together by lubricant material, shaft, sliding the ‘L’...
Page 17 SERVICE PROCEDURES Synchronous Motor Replacement 220DIO 4 pipe Control Unit Reposition the spring If the top plastic Firmly push down Reconnect the motor over the shaft, wider casing of the on the rotovalve power lead to the coils at the base (ﬁner coils rotovalve has come lose, while replacing the split pin circuit board and attach a new...
Page 18 SERVICE PROCEDURES Connector Replacement 220DIO 4 pipe Control Unit Replacing the air pipe connectors Each of the four connectors on the side of the Control Unit can be removed and replaced in the event of damage or breakage. In the event of more signiﬁcant damage to the external plate that houses the four connectors, proceed to the Connector Plate Replacement procedure.
Page 19 SERVICE PROCEDURES Connector Replacement 220DIO 4 pipe Control Unit Detach the air pipe from Reﬁt the connector to the Reposition the Before closing the the damaged connector Connector Plate, twisting Connector Plate into housing, make sure by pulling ﬁrmly. Unpack the clockwise to lock into place.
Page 20: Connector Plate Replacement
SERVICE PROCEDURES Connector Plate Replacement 220DIO 4 pipe Control Unit Replacing the Connector Plate If the sunken Connector Plate is cracked or damaged it must be replaced. The following tools may be Switch off power supply Using a soft cloth to Use a Phillips Head required: to the Control Unit,...
Page 21 SERVICE PROCEDURES Connector Plate Replacement 220DIO 4 pipe Control Unit Unpack the replacement Reposition the Connector Before closing the Align the top and Connector Plate and Plate into the side of the housing, make sure bottom housing reﬁt all four connectors in the control unit.
Page 22: Air Filter Maintenance
SERVICE PROCEDURES Air Filter Maintenance 220DIO 4 pipe Control Unit Cleaning and replacing the air ﬁlters Good ﬁlter maintenance is critical to maintain the Control Unit in optimal operating condition. Failure to maintain clean ﬁlters may result in system downtime and increased repair costs. It is recommended that the air ﬁlter be replaced each year as a minimum. Always check and replace air ﬁlters as part of any standard maintenance or service procedure.
Page 23: Rubber Feet Replacement
SERVICE PROCEDURES Rubber Feet Replacement 220DIO 4 pipe Control Unit Replacing the rubber feet on the base of the unit The Control Unit has four rubber feet at each corner of the base of the unit, to cushion the unit when hanging against the foot of the bed or standing on the ﬂoor or other stable surface.
Page 24 SERVICE PROCEDURES Rubber Feet Replacement 220DIO 4 pipe Control Unit Once through the hole, Before closing the Align the top and Holding the top and lay the bottom housing housing, make sure all bottom housing bottom housing ﬁrmly ﬂat and use the Needle Nose power leads and pipes are free before slowly pushing together, turn the Control Unit...
Page 25: Hanging Hook Replacement
SERVICE PROCEDURES Hanging Hook Replacement 220DIO 4 pipe Control Unit Replacing the hanging hooks on the base of the unit Very rarely, the metal hanging hooks located on the base of the Control Unit will become damaged or worn. Either one or both hooks can be replaced.
Page 26 SERVICE PROCEDURES Hanging Hook Replacement 220DIO 4 pipe Control Unit Slide the hook into the Insert the ‘U’ shaped Replace the plastic Replace the foam spring and push the hook silver bracket over the housing and use the mounting strip into the base mount.
Page 27: Troubleshooting
SERVICE PROCEDURES Troubleshooting The following section outlines a list of common troubleshooting issues, together with recommended initial checks and subsequent Technical Service steps and procedures to follow if there is a suspected fault in the System. If a repair seems unmanageable, the issue falls outside the scope of serviceable repairs or the problem persists following the recommended service checks and repair procedures, please return the faulty System (Control Unit;...
Page 28 SERVICE PROCEDURES Troubleshooting Problem Cause Initial Checks Technical Service Procedure The Mattress is not Static or Max Firm 1. Switch the Control Unit off and disconnect the power before Synchronous Motor alternating. modes may be restarting. Ensure Alternating Mode is selected. Replacement activated.
Page 29 SERVICE PROCEDURES Troubleshooting Control Unit alarm indicators Problem Cause Initial Checks Technical Service Procedure Initial failure 1. Reset the alarm – turn off Power and press the Alarm Mute Control Unit button. Fuse Check and Replacement 2. Check the CPR Tag is intact, ensuring all sealing connectors are fully ﬁtted to the Mattress air pipes.
Page 30: Safety
SAFETY Precautions General Safety Precautions Protection Against Hazards Fluids Do not use this equipment in the presence of ﬂammable anesthetics. Explosions could result. Avoid spilling ﬂuids on any part of the Control Unit. The air intakes for the Control Units are at the sides of the unit. To If spills do occur: •...
Page 31: Care & Cleaning
CARE & CLEANING Recommendations General Recommendations Follow the Manufacturer’s instructions as detailed Do not use high temperature autoclave steam below and in the applicable User Manual. Failure cleaning devices or phenolic based cleaning to do so may result in cross contamination or products.
Page 32 CARE & CLEANING Recommendations Cleaning and Maintenance Between Patients The Mattress should be dismantled according to the Inspect all parts for damage and replace as instructions on the previous page. necessary before returning to service. Launder the Top Cover and Air Cells as described on the previous page.
Page 33: Definition Of Symbols Used
SERVICE PROCEDURES Technical Specifications Deﬁnition of Symbols Used The following symbols may appear in this manual, on the Control Unit, or on its accessories. Some of the symbols represent standards and compliances associated with the Control Unit and its use. Caution: Warning of possible hazard to system, patient or staff.
Page 34: Declarations
SERVICE PROCEDURES Declarations Declaration – electromagnetic emissions- for all ME EQUIPMENT and ME SYSTEMS Guidance and manufacture’s declaration – electromagnetic emission This Control Unit is intended for use in the electromagnetic environment speciﬁed below. Emission test Compliance Electromagnetic environment – guidance RF emissions Group 1 This Control Unit only uses RF energy...
Page 35 SERVICE PROCEDURES Declarations Declaration – electromagnetic immunity – for ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING Guidance and manufacture’s declaration – electromagnetic immunity This Control Unit is intended for use in the electromagnetic environment speciﬁed below. Immunity test IEC 60601 test level Compliance level Electromagnetic environment - guidance...
Page 36 SERVICE PROCEDURES Declarations Recommended separation distances between portable and mobile RF communications equipment and the EQUIPMENT or SYSTEM – for ME EQUIPMENT or ME SYSTEM that are not LIFE-SUPPORTING Recommended separation distances between portable and mobile RF communications equipment and this alternating Control Unit. This Control Unit is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
Page 37 COMPANY INFORMATION Direct Healthcare Services Ltd Company’s registered number: 5252571 Registered Oﬃce: Unit 8-10, Withey Court, Western Industrial Estate, Caerphilly, Wales, UK CF83 1BQ Tel: +44(0) 845 459 9831 Fax: +44 (0) 845 459 9832 info@direct-healthcare.org.uk www.directhealthcareservices.co.uk...