rada 425-t3, Product Manual

Page 1: ...1 IMPORTANT Installer This Manual is the property of the customer and must be retained with the product for maintenance and operational purposes PRODUCT MANUAL...

Page 2: ...NING 13 OPERATION 16 FAULT DIAGNOSIS 17 MAINTENANCE 19 SPAREPARTS 37 CUSTOMERCARE Back Cover If you experience any difficulty with the installation or operation of your new mixing valve then please re...

Page 3: ...nsidered as being functionally infallible Provided that the thermostatic mixing valve is installed commissioned operated within the specification limits and maintained according to this Manual the ris...

Page 4: ...en certified for use in UK healthcare premises as a Type 3 mixing valve under the TMV3 scheme Where this product is to be used in such an installation particular Application Installation Commissioning...

Page 5: ...miliarizeyourselfwiththepartnamesandtoconfirm that the parts are included 9 Documentation 1 x Product Manual 4 x Fixing Screws 3 x Compression Fittings 4 x Wall Plugs 1 x 425 t3 Mixing Valve 1 x Hexag...

Page 6: ...6 All dimensions are nominal and in mm DIMENSIONS 200 mm 300 mm 56 mm 144 mm 150 mm 73 5 mm 246 mm...

Page 7: ...equency Suchproceduresmustbeconductedstrictly in accordance with the information supplied with the disinfectant and with all relevant Guidelines Approved Codes of Practice If in any doubt as to the su...

Page 8: ...hermostatic Control Range approximately 25 60o C Note Ifthehotwatersupplysystemdoesnotincorporatesafetydevices e g nonself resetting thermal cut out to prevent this temperature being exceeded then the...

Page 9: ...ssive in operation Flow Control Connections Rada 425 t3 c inlets and Outlet 1 BSP female 28 mm compression Angle inlet checkvalve elbows rotate to accept rising falling or rear fed supplies Standardco...

Page 10: ...ipework must be rigidly supported 6 Pipework dead legs should be kept to a minimum The mixed water outlet piping should not exceed 2 m and the overall length from the hot water circuit to the discharg...

Page 11: ...grub screws and position so that the isolator is accessible Tighten the grub screws 2 Loosen the backplate grub screws 2 off using the 3 mm hexagonal wrench supplied and remove the backplate 3 Positi...

Page 12: ...Isolator Assembly Compression Nut Olive Wall Plugs Fixing Screws Grub Screw Fitting Inlet Pipework Inlet Pipework Outlet Pipework 2 x Grub Screws for removal of inlet elbow 2 x Isolator Assembly Grub...

Page 13: ...ture Setting Check that an adequate supply of hot water is available at the hot inlet of the mixing valve The minimum temperature of the hot water must be at least 12 o C above the desired blend howev...

Page 14: ...l but not fully cold water temperature is obtained then fit temperature knob onto hub so that the indicator on the temperature knob aligns with the stop lugs on the hub refer to Figure 2 6 Replace the...

Page 15: ...of checkvalves i e that hot water does not cross flow into the cold supply and vice versa 2 Check that the supply pressures are within the range of operating pressures for the valve a ensure that the...

Page 16: ...stablish a performance check at this time which should be noted for future reference as part of a Planned Maintenance Programme The procedure should be chosen to imitate both typical and difficult ope...

Page 17: ...5 Hot water in cold supply or vice versa Indicates check valves require maintenance refer to MAINTENANCE Normal function of mixing valve when operating conditions are unsatisfactory Indicates operati...

Page 18: ...l Pack and renew all seals b If leak persists from around temperature spindle Renew sleeve and shuttle assembly Continued 6 Maximum blend t e m p e r a t u r e setting too hot or too cool a Indicates...

Page 19: ...tions such as non healthcare where the risks to the user are too slight to justify the full in service test procedure and maintenance logging process the procedure under Performance check is suggested...

Page 20: ...e headings of Normal Operating Conditions and Operating Parameters Important In healthcare applications such as hospitals aged person facilities residential care homes etc and in any other application...

Page 21: ...rature control it is necessary to isolate and restore each supply in turn a few times Blend Temperature check for correct blend setting and or maximum preset temperature Reset as necessary Performance...

Page 22: ...y and give continued safe performance Service Contracts can be undertaken subject to site survey All Service Contract work is carried out by fully trained Rada Mira Service Engineers who carry a compr...

Page 23: ...esigned for minimal maintenance under conditions of normal use External surfaces may be wiped clean with a soft cloth and if necessary a mild washing up type detergent or soap solution can be used War...

Page 24: ...g of residual water 2 Remove the temperature knob concealing cap and then the screw using the 3 mm hexagonal wrench supplied Remove the temperature knob 3 Remove the two screws holding the cover shrou...

Page 25: ...ing the thermostat assembly Rinse the valve interior thoroughly in clean water to remove any debris before refitting the thermostat assembly Note The body interior must be cleaned carefully and not da...

Page 26: ...smantle the shuttle and sleeve assembly again insert the bar through the holes at the front of the port sleeve to hold the assembly whilst the retaining cap is loosened only using a spanner 50 mm acro...

Page 27: ...way Do not use any abrasive material 14 Examine all accessible seals for signs of deformation or damage and renew as necessary taking care not to damage the seal grooves 15 Lightly smear all seals an...

Page 28: ...3 Insert the shuttle and sleeve assembly into the valve body and secure in positon with the four screws Shuttle and Sleeve Assembly Figure 8 Shuttle Port Sleeve Assembly 24 Install the actuator sleeve...

Page 29: ...te and undo the outlet compression fitting This is so that you can lower the body away from the backplate This will give enough clearance to remove the isolator assemblies from the inlet elbows 3 Remo...

Page 30: ...ew on the isolator assemblies through 90 o refer to Figure 10 to isolate the water supplies to the valve Open an outlet fitting to release pressure and to assist the draining of residual water 2 Unscr...

Page 31: ...t number Risk level found e g vulnerability of patient Frequency of critical component replacement Frequency of temperature monitoring Responsibility for temperature monitoring Location of temperature...

Page 32: ...ng Yes Yes 5 Check clean strainers See Maintenance Procedure Inlet Strainers 7 Check open isolating valves 6 Check replace check valves See Maintenance Procedure Check valve Cartridges 8 Re set record...

Page 33: ...tervals No No NOTE Mixed water temperature required is that at step 2 3 of In service test procedure Has mixed water temperature changed by more than 1K Has mixed water temperature changed by more tha...

Page 34: ...n Bidet Washbasin Bath 44 o C fill Bath 46 o C fill Shower Bidet 38 o C maximum 44 o C maximum 41 o C maximum 41 o C maximum 41 o C maximum 38 o C maximum 46 o C maximum 41 o C maximum 44 o C maximum...

Page 35: ...mperatures expected of a Type 3 valve it is essential that the valve is used only for the applications covered by its approved designations with the appropriate water supply pressures and temperatures...

Page 36: ...temperature e record the maximum temperature achieved as a result of d and the final temperature Note The final mixed water temperature should not exceed the values shown in Table 1 below Any higher...

Page 37: ...37 SPARE PARTS...

Page 38: ...ack components identified D 523 10 Cover Screw Pack components identified E 523 11 Fixing Screw Pack components identified F 523 12 O Seal Pack components identified G 523 13 Filter Elbow O Seal Pack...

Page 39: ...39 Spare Parts Diagram 414 92 523 01 523 03 523 05 A 523 04 C B B G A C D C C C G C D E E E E F F F F J F G G G G G G G 523 14 523 02 523 15 523 16 H H J H J J J J J 523 18 523 19...

Page 40: ...After Sales Service how we can help you We have a network of fully trained staff ready to provide assistance should you experience any difficulty operating your Rada equipment Spare Parts All function...