Operating Instructions & Technical manual WG
Contents
1. 47 William Green WG Dental Air Compressor William Green Operating Instructions amp Technical manual WG Dental oil less air compressor Document Version 1 01 October 2100 47 William Green WG Dental Air Compressor Contents 1 Brief Introduction 2 Machine Structure 3 Main Technical Specification 4 Explanation of Marks 5 Transportation and Storage 6 Installation Test and Operation 7 Maintenance 8 Notices 9 Troubleshooting 10 Accessories and Spare Parts 11 Electrical Circuit 12 Air Passage Drawing 13 The Drawing of The Compressor Structure Version 1 14 The Drawing of The Compressor Structure Version 2 15 The Drawing of The System 16 Appendix 47 William Green WG Dental Air Compressor 1 Brief Introduction WG air compressor features compact structure stable performance large flow rate easy operation and maintenance Particularly the machine can be running without lubricant oil so that the compressed air from the machine does not contain any oil fume air can be obtained Because the air for dental apparatus must not contain any oil this machine can be used as an independent air supply machine for dental therapeutic apparatus also can be used in other areas such as medical care scientific research industrial production and daily life In order to keep peace and quiet in therapeutic room a silencing box is specially designed for the air compressor See Fig 1 making therapeutic e2. again and the pressure in the tank gradually rises again This happens repeatedly The high quality 47 William Green WG Dental Air Compressor compressed air can be supplied to dental therapeutic instrument In addition air supply valve drainage valve safety valve and electrical switch box are installed on the air tank WG series oil less air compressor is classified as a single head This compressor includes an air drier in the machine The air passage in WG series air compressor is shown in Fig 8 where dotted line is air drying system it is an option and can be installed on request from customers 2 Electrical WG series oil less air compressor is equipped with switch box with starter inside Each head is equipped with one switch box The electrical wiring for the functions like start protection is shown in Fig 7 3 Main Technical Specification WG Air Compressor Pressure controlled Volume valve of air Volume mm Weight Fuse activating tank LxWxH kg A pressure L Safety Rated air Max air Power Rated Rated valve displacement pressure ae power current activating L min MPa S PPY KW A pressure MPa MPa 220 10 185 0 75 V 1 1 5 0 88 10 75 0 45 28 640x440x640 40 15 50 1Hz 4 Explanation of Marks AO Electrical shock Hot No touching High Pressure a Fi p A Grounding Protection B Type Equipment Notice Check Ran
3. 85 10 002 PISTON RING 13 KW185 10 003 LINK 14 KW185 NSK6009V BEARING 15 KW185 A00 001 ECCENTRIC 16 KW 185 00 01 14 CASING 17 KW 185 00 013 FAN CONNECT 18 KW 185 00 012B FAN 47 William Green WG Dental Air Compressor 15 The drawing of the system ui XB 3 DQ e Says o CBee lt Q O Electrical switch box Retaining valve Air tank Drainage valve Air drying system order part for customer Air supply valve Power cable Barometer Safety valve Pneumatic control switch Condenser order part for customer TACNO ULEN 47 William Green WG Dental Air Compressor 15 Appendix 1 l 2 l 3 I 4 A a _ A RED J BROWN y S Lo GREEN M BLACK M se YELLOW aes we YELLOW e y GREEN a 9 j GREEN J 3 agi 6 3 _ be ul Relay HG4506 Relay HG4506 YELLOW YELLOW M B B BROWN Ex BROWN FUSE FUSE o 240 Vac IN Old set of New set of 240 Vac IN wires wires C BLUE BLUE C YELLOW RED NEW COLOUR CODE BROWN YELLOW OLD COLOUR CODE BLACK GREEN YLW GRN YLW GRN NOTES DRAWN BY aa ranm vaur a William Green Pty Ltd CHECKED TITLE SIZE D R YJ185 COMPRESSOR 45L TANK atnam Avalur A4 RELAY WIRING DIAGRAM IAPPROVED DATE PART N
4. dom Document 47 William Green WG Dental Air Compressor 5 Transportation and Storage The machine should be transported and stored in following condition Ambient temperature 400 55 Relative humidity lt 95 Atmosphere pressure 500HPa 1060HPa 6 Installation Test and Operation 1 Installation a The machine should be operated in the room with temperature of 5 40 and relative humidity of greater than 80 Surrounding area of the machine should be clean dry free of corrosive gas well ventilated and no direct sunlight b The machine should be horizontally installed on firm ground with the special silencing box installed on its top And so the equipment will be placed according to fig 3 Both right and left space between the box and wall is above 10 cm F Fig 3 The condition of a equipment used c Power used Single phase 220 22V 50Hz 1Hz Note Special power line for the machine is recommended with short circuit protection and reliable grounding device The section area of power cable and melt current of fuse are as follows Section area of power cable lt 1 5mm Melt current 15A Socket rating 10A d After unpacking check the machine for any missing parts and damages check accessories and spare parts and technical document supplied together with the machine according to the packing list e Connection of air pipes connect air s
5. es for WG 15A 2 11 Electrical Circuit 220V 504 Ty x red yel Q G I Fig 7 The electrical circuit 47 William Green WG Dental Air Compressor 12 Air passage Drawing 1 Single head machine Ar conpressi on machi ne Pressure controlled swtch ar suppl y j oi nt connecting pressure reduci ng val ve Ge wey val ve Ar tank Dr ai nage val ve Fig 8 The air current drawing 47 William Green WG Dental Air Compressor 13 The Drawing of the Compressor Structure Version 1 Fig 9 The drawing of the compressor 1 Motor 2 Rotor Spindle 3 Windpipe 4 Ring 5 Cylinder cover 6 Sealing 7 Cylinder Head 8 Air filter refill 9 Rubber Ring 10 Cylinder body 11 Fitting 12 Piston ring 13 Link 14 Bearing 15 Eccentric 16 Casing 47 William Green WG Dental Air Compressor 14 The Drawing of the Compressor Structure Version 2 Position Part number Description 1 KW185 30 950 MOTOR 2 KW185 30 005 ROTOR SPINDLE 3 KW 185 00 006 WINDPIPE 4 KW 185 RING 5 KW185 A40 001B CYLINDER COVER 47 William Green WG Dental Air Compressor 6 KW185 A00 004 SEALING 7 KW185 A20 001 CYLINDER HEAD 8 KW185 00 008 AIR FILTER 9 KW185 00 003 RUBBER RING 10 KW185 00 005 CYLINDER BODY 11 KW185 10 001 FITTING 12 KW1
6. he operation handle of the pressure controlled switch to AUTO position 3 Closely watch all safety mark to avoid injuries like scald electrical shock etc 4 Drain off water in the air tank regularly and frequently brush off the dust on the radiator 5 Check the air filter regularly replace filter core on time 6 Any trouble or failure should be checked and fixed by specialized technicians 47 William Green WG Dental Air Compressor 9 Troubleshooting No Trouble Reasons Check Remedy 1 The air 1 No power supply or Check power supply Restore power compressor fuse failure and fuses supply and change does not fuses start a 2 Pressure controlled Check position of Turn handle to switch is not turned to pressure controlled AUTO position AUTO position switch 3 Failure of starter Check if starter works Change starter normally 4 compression Check if motor rotates Fix motor and its machine clamps smoothly driving system 5 Temperature Check if temperature Fix according to protector of protector activates overloading and compressor motor failure of temperature activates protector 2 Hard to start 1 Too low the power Check if power voltage Provide voltage voltage is higher than 198V stabilizer 2 Failure of starter Check if starter Change starter capacitor capacitor fails capacitor 3 Pressure 1 Too high the air Check if compressor Reduce air does not rise cons
7. nvironment better Si I enci ng box Ar compressor H ower Fig 1 Silencing box 47 William Green WG Dental Air Compressor 2 Machine Structure 1 Mechanics Fig 2 Structure of Air Compressor Pneumatic control switch Safety valve Switch box One way valve Air tank Compression machine Barometer Filter Drainage valve Air supply valve Eg O Power supply cable for blower in silencing box The structure of WG series oil less air compressor is shown in Fig 2 All units in the machine sit on a cylindrical pressure vessel called air tank Compression machine is main part of the air compressor A motor drives directly the eccentric wheel connecting bar system making the piston move reciprocally The piston is made from high temperature resistant and abrasion resistant non metal material and is able to work without lubrication for a long time Compressed air discharged enters in the air tank a barometer displays the pressure in the tank When the pressure inside rises to 0 75 MPa power is automatically cut off by a pneumatic control switch the compressor is shut off When the pressure inside lowers to 0 45 MPa power is turned on by the pneumatic switch the compressor starts
8. o SCALE REV REF CHANGE CKD OK DATE File YJ185relay wiring 14 05 09 John Green YJ185 Relay Wiring N T S I 2 T 3 1
9. o begin supply of compressed air When the pressure in the air tank decreases to 0 45 MPa pressure controlled switch resets and power supply resumes the machine starts running again The pressure in air tank increases again If the machine can automatically stop and start the machine works normally 47 William Green WG Dental Air Compressor Fig 5 Pressure controlled switch at running position b Turn the operation handle for pressure controlled switch to off position Switch off position then pull out the plug of the machine Test run is completed 3 Operation a To operate WG series oil less air compressor correctly and safely read carefully this operation instruction b Connect the power cable for the axial flow blower in the machine see Fig 2 11 with the power cable for the axial flow blower in silencing box c Insert the plug of the machine in power socket of single phase 10A Open air supply valve turn the operation handle for pressure controlled switch to AUTO position the machine will run in a normal condition 7 Maintenance 1 Draining of air tank When the air compressor is running the vapour in the air is condensed in the air tank Excess water would affect air quality in air tank and would affect normal work of the equipment using compressed air Therefore accumulated water in the air tank must be drained off regularl
10. ressor will start running is 0 45 MPa 0 015 MPa the pressure controlled switch must be adjusted again to set correct activation value The way to adjust is as follows Open the casing for the pressure controlled switch See Fig 2 1 adjust the setting screw for maximum pressure Turning clockwise makes activation pressure higher so the pressure at which the air compressor stops running will be higher and the setting screw for pressure difference Turning clockwise makes larger pressure difference that is the difference between the pressure at which the air compressor starts and the pressure at which the air compressor stops is larger respectively Careful adjustment will make the activation pressures within the range set by the manufacturer Maximum pressure setting Pressure difference setting Increase Increase Fig 6 Adjustment of pressure controlled switch 47 William Green WG Dental Air Compressor 8 Notices 1 The power supply for the machine is 220 22v and 50Hz single phase To ensure the air compressor working normally for the machine using single phase power a voltage stabiliser for single phase power must be provided 2 If power cut happens when the machine is running the operation handle of pressure controlled switch should be turned to off position When power supply resumes turn t
11. umption meets requirement for consumption or use while air consumption compressor with compressor larger air keeps displacement running 2 Severe leakage of air Check if there is Stop leakage in pipe line leakage 3 Failure of Check if compression Change compression compression machine machine works machine normally 4 Too low setting of Check if safety valve is Change safety value safety valve normal or adjust safe pressure to 0 88 MPa 4 Too frequent 1 Incorrect activation Check activation value Change pressure start and value of pressure of pressure controlled controlled switch or stop controlled switch switch adjust activation pressure to 0 75 MPa 0 45 MPa 2 Too much Water in Check if compressed Drain off water in air air tank air contains water tank 5 When the 1 There are troubles in The power circuit will According the reason power is the supply power be checked by the of trouble replace the switched on electrical engineer faulty element the machine does not 2 when the machine is In the metal silencing Replace the blower operation in service it stops or box the fan is fault and does not operate the temperature was suddenly rising The main equipment of Replace the the system has trouble compressor 47 William Green WG Dental Air Compressor 10 Accessories and Spare Parts 1 Compressor system with single head WG series 8 PU pipe 3 3m 08 02 quick joint 1 set 8 G1 4 quick joint 1 G1 40 G1 2 screw joint 1 2 Fus
12. upply pipe with the joint of air supply valve of the 47 William Green WG Dental Air Compressor machine See Fig 2 10 and fasten it with a hoop F Fig 4 Pressure controlled Switch at off position f Check if drainage valve is off and if pressure controlled switch is at the position of off Switch off position See Fig 4 g Electrical connection Check if power supply is normal Power supply voltage For single phase should be 198 242V Insert the plug for the machine into power supply socket Installation of the machine is completed 2 Test run of the machine a Close drainage valve Fig 2 9 and air supply valve Fig 2 10 Check if the reading of barometer Fig 2 7 is below 0 45 MPa Turn the operation handle of pressure controlled switch to AUTO see Fig 5 the machine will start immediately The reading of barometer will slowly rise with increasing pressure inside the air tank When the reading of barometer reaches 0 75 MPa pressure controlled switch activates the power supper is cut off machine stops running At the same time the load releasing valve of pressure controlled switch activates to lower high pressure in the cylinder of compression machine so that the machine can be started again during the period when the machine stops running observe if the reading of barometer is decreasing If there is no leakage of air in the machine open air supply valve t
13. y The frequency for draining is depended on environment condition and operation time but usually once every 2 3 days The way to drain off the condensate is as follows Put the pipe connecting drainage valve in a container with compressed air in the air tank slowly turn counter clockwise the knob on the drainage valve to drain off the water in the air tank until all accumulated water comes out from the pipe After that turn tightly clockwise the knob to ensure no leakage 2 Change of filter 47 William Green WG Dental Air Compressor An air filter is installed on air inlet of the air compressor see Fig 2 8 to prevent the dust in the air from entering the air compressor and reduce noise After used for a period of time the filter core in the air filter will get clogged In a result sucking capacity of the air compressor will be reduced therefore the filter core must be replaced regularly The way of replace is as follows open the lid on the air filter take out the old filter core put in a new one then close the lid 3 Adjustment of pressure controlled switch Pressure controlled switch is used for controlling stop and start of the air compressor to ensure correct pressure of compressed air in the air tank If the pressure of compressed air in the air tank is found not to be in the range set by the manufacturer set value the pressure at which the air compressor will stop running is 0 75 MPa 0 015 MPa the pressure at which the air comp
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