mrf-301m user`s manual
Contents
1. Run indicator comes on If there is no refrigerant recovered in 2 minutes the recovery ends and the unit come into the function for vacuum When the recovery ends and the unit is performing the vacuum function slowly open the valve for used oil bottle Close it after draining 7 At the moment Auto mode indicator lights continuously and Vacuum indicator flashes run the vacuum function If the set Recycle or not when vacuuming parameter is ON during vacuuming vacuum 1 minute and then run the recycle function and the Recycle indicator flashes The recycle and vacuum functions run at the same time The unit will stop the recycle function automatically until the left time of vacuum is 2 minutes If the set time of vacuum is less than 3 minutes the recycle function will not be performed 8 After the vacuuming ends the OIL will be displayed flickeringly in Parameter area At the moment close the high pressure handvalve and slowly open the valve for new oil bottle to fill new oil please refer to the note for filling new oil When the LAUNCH filling is completed close the valve for new oil bottle 9 After the oil adding is completed open the high pressure handvalve and press OK key to run the Recharging function automatically At the moment the auto mode indicator lights continuously and Recharging indicator flashes at the moment The display in PARAMETER2. area is the left quantity of refrigerant recharging If the recharge amount does not change in 1 minute continuously or the recharging operation is completed the auto mode function ends and the unit returns to the initial state 10 During the auto mode running it will end so long as pressing Stop key and the unit returns to initial State Q Note When adding oil it could not be completely sucked by oil sucking pipe The inlet sucking pipe should always be below the oil level 7 Subsidiary functions 7 1 System function The system functions include Vacuum for system Nitrogen supply and Refrigerant supply 7 1 1 During the unit being maintained eg replace the drying filter filter tank inside unit etc The air will enter the system it is necessary to run Vacuum for system function to extract the air inside pipes 7 1 2 After the unit is maintained supply pipes with nitrogen by the function of Nitrogen supply to ensure the sealing of the unit If the pressure on the P gauge does not decrease fully indicates that the sealing is good 7 1 3 When the refrigerant inside tank is used up and supplying new refrigerant is required the Refrigerant supply function could be used Procedures 1 Close the high and low pressure hand valve H L on the sideboard valves for gas refrigerant port liquid refrigerant port on the tank new and used oil bottles
3. even a drop of water may cause pipe block which is so called ice block inside A C pipes So the water inside A C system must be drained completely During vacuum the vacuum pump can not only drain the air but also speed the water volatilizing into vapor with the minus pressure created by draining air and then suck the water out of the A C system completely It is discovered by experts that the time of draining water is 10 times longer than that of draining air In order to drain the water it is necessary to possess high limit vacuum and drain performance Special attention to the time of vacuuming Do not stop vacuuming operation immediately after the meter tank reaches up to the minus pressure 3 5 minutes more are necessary to achieve the purpose of draining water from A C system Furthermore why does the refrigerant recovery be required and how can we ensure the recovered refrigerant to be reused We know that the refrigerant has strong damage to ozonosphere and finally affect the whole living environment so international regulations do not allow the refrigerant medium to be drained to atmosphere directly Meanwhile as a sort of refrigerant medium it has an important feature of reliable performance not decompressing easily and not chemical reacted easily with other matters The nature and performance of the residual refrigerant in A C system is not changed but only mixed with some impurities thus it only requires to be
4. recycle time being too long cool the unit The recovery function could not be rerun under the condition that the alarming state is not eliminated 6 Auto Mode 1 Open the valves for high and low pressure quick connectors connected to the auto A C system and the high and low pressure hand valve H L on the side board and then open the valves for gas port and liquid port on the refrigerant tank Close the valves for new and used oil bottles 2 Press key and select the Auto mode item in ITEM column 3 At this time Auto mode indicator lights continuously and Recharging indicator flashes The quantity of recharging refrigerant under the Auto mode is displayed on PARAMETER area Set the quantity of refrigerant recharging by pressing or key and press the OK key to confirm 4 After the setting of last step is completed Auto mode indicator lights continuously and Vacuum indicator flashes The displayed time on PARAMETER area is the time of vacuum under the Auto mode Press or key to set the time of vacuum and press the OK key to confirm 5 After the setting of last step is completed only the Auto Mode indicator comes on continuously Pressing Run key starts to run automatically 6 The first running function is the recovery at the moment Auto mode indicator lights continuously and Recovery indicator flashes and
5. 6 Check for the sealing of pipes Filter O ring metal gasket Filter screen Note After replacing with the filter screen net is replaced the pipeline must be well connected to avoid the leakage 9 Adding new oil to new bottle When recovering refrigerant from A C system some cooling oil may be taken out from A C system at the same time so proper cooling oil needs to be added Before replacing refrigerant add the new cooling oll into the new oil bottle For the compressor suitable for R134a refrigerant only use synthetic polyester oil Operation procedure Unscrew the bottle cap and take down the new oil bottle Add proper desired cooling oil and then install the bottle to the original position LAUNCH 10 Empty the Used Oil Bottle Drain used oil to used oil bottle after each recovery is complete and dispose the used oil properly in time Troubleshooting EEE NGT MRF 301M A C Service Station User s Manual Operation procedure Take the used oil bottle from the position of quick connector After the used oil is disposed properly reinstall it well Troubles Reason Solution No display when turning on performed or the recharging 1 Vacuum pump oil amount is not enough 2 Leak in pipes VE ee 1 Excessive vacuum pump oil DERE 2 Inlet pressure is too high 1 Fuse is broken 2 PCB is damaged 3 The connection of power cables is loose 1 There is no refrigerant inside A C system 2 The sup
6. 7 3 Total used time and times inquiry 1 Hold amp press OK key and meanwhile turn on power switch until the is displayed on PARAMETER area with a sound of ringing Loose OK key and the unit comes into the function of Total used time and times of compressor vacuum LAUNCH pump and drying filter The default display on panel is the Total used time of vacuum pump and the Recharging indicator comes on The user can press Or key to select the Total used times of vacuum pump the Vacuum indicator comes on the Total used time of compressor Recovery indicator comes on and Total used times of compressor Recydle indicator comes on the Total used time of drying filter Auto mode indicator comes on 3 When displaying Total used time of vacuum pump the Min indicator will come on and its actual unit is hour 4 When displaying Total used times of the vacuum pump the Kg indicator will come on and its actual unit is times 5 When displaying Total used time of compressor the Min indicator will come on and its actual unit is hour 6 When displaying Total used times of compressor the Kg indicator will come on and its actual unit is times 7 When displaying Total used time of drying filter the Min indicator will come on and its actual time is hour 8 Pressing
7. Empty tank alarm Phenomena The unit displays E002 and the alarming sound will be heard when performing the recharging item and recharging item under auto Mode Meaning The refrigerant inside tank is not enough and the unit could not perform the recharging function and the recharging function under auto mode The unit will stop automatically when the functions be performed Handing solution Refrigerant needs to be supplied for the tank of the unit Connect the external tank with enough refrigerant more than 5kg is advisable to the fill port of the unit through hose Run the refrigerant supply function of system function refer to the above section 3 E003 Vacuum is forbidden Phenomena The unit displays E003 and the alarming sound will be heard when selecting the vacuum item and vacuum item under auto Mode Meaning There is refrigerant in A C system or pipes the unit could not perform the function Handling solution After running the recovery function run vacuum operation again 4 004 High pressure alarm Phenomena The unit displays E004 and the alarming sound will be heard when performing the recovery item recovery item under auto Mode and recycle item Meaning The pressure in pipeline is too high and the unit could not perform these functions these functions will stop automatically Handling solution After the unit is turned off and cooled down press the pressure relief valve to release the system pressur
8. Hold and press Stop key and meanwhile turn on the power switch until the is displayed on PARAMETER area with a sound of ringing and then loose Stop key At this moment the unit comes into the system function mode 3 The default item is Vacuum for system and the Vacuum indicator comes on The user can press C key to select the function of Nitrogen supply the Recovery indicator comes on or Refrigerant supply the Auto mode indicator comes on 4 The operation of Vacuum for system is same as that of Vacuum 5 Press 2 key to switch the function of Nitrogen a ND Se MRF 301M A C Service Station User s Manual supply Recovery indicator illuminates at the moment the Kg indicator illuminates the display in Parameter area is the total weight on the plate After pressing Run key supply nitrogen from the high pressure port or low pressure port to test the sealing of the unit 6 Press key to switch the function of Refrigerant supply Auto mode indicator illuminates and at the moment the Kg indicator illuminates The display in Parameter is default supply amount of refrigerant The recharge quantity of refrigerant could be set by pressing or Key and press OK key to confirm the set value Connect the external tank with the eno
9. Station User s Manual Recover the refrigerant inside auto refrigerant hoses if IC blended air acuum for auto A C screw to the bottom 5 Open the valves for gas and liquid refrigerant port on the refrigerant tank 2 R134a Recovery Procedures 1 Turn on the power switch 2 Select the Recovery function in the Item column 3 Press the Run key and the Run indicator comes on and the unit starts to run Press Switch key the display on PARAMETER area will be switched between the weight of the recovered refrigerant and the total weight of refrigerant inside tank 4 During recovery a If the amount of the unit refrigerant inside tank is more than the setting value the recovery operation will be stopped forcibly and meanwhile the unit alarms and the LED display the code E001 At this time user should transfer proper refrigerant from the tank to other empty tank to store it The recovery function could not be rerun under the condition that the alarming state is not eliminated b If the unit system pressure is high 17 5bar the recovery operation is stopped forcibly and meanwhile the unit alarms and the LED LAUNCH displays the code E004 At this time cool the equipment or release the pressure by pressing the pressure release button The recovery function could not be rerun under the condition that the alarming state is not eliminated c If the used time of dryi
10. Stop key The system stops Switch key Switch the displays between the recharging quantity of left refrigerant and the current net weight inside refrigerant tank when recharging Switch the displays between the quantity of recovered refrigerant and net weight inside refrigerant tank when recovering F Descriptions on subsidiary functions of each key on the control panel 1 Press and hold 6 key and meanwhile turn on the power of the unit and the unit enters the setting Status of Resuming default value and return to the following parameters set at the factory the used object weight when calibrating the electronic scale 10Kg recharge compensation amount 0g weight value for empty refrigerant tank alarm 2Kg percent value for full refrigerant tank alarm 70 the total used alarm time of compressor 20h the total used alarm time of drying filter 20h the total alarm time of vacuum pump 20h 2 Press and hold key and meanwhile turn on the power of unit and the unit comes into the state of self test To check if each solenoid valve compressor and vacuum pump work normally 3 Hold and press OK key and meanwhile turn on the power of the unit and the unit comes into the state of total used time and times of compressor and vacuum pump and total used time of drying filter User can clear the parameter to Zero 4 Hold and press key and meanwhile turn on the power of the unit and the unit com
11. Switch key can reset the total used time and times of and compressor and vacuum pump and the total used time of drying filter Press Switch key and a sound will be heard at this time 6 digit passwords are required to input The passwords are input with sound of ringing and digits of the input passwords are displayed on PARAMETER area The situation will end until the 6 digit passwords are all inputted If the passwords are correct the time and times resetting is successful and 0 will be displayed 9 The user must turn off the power and return on the unit to come into the normal function status Note The password is S RO er top 4 l run OK and Switch the priority orders of six keys can t be mistaken 7 4 Parameter Setting 1 Press amp hold Run key and turn on the power switch at the same time until the is displayed on the PARAMETER area with a sound of ringing Loose the Run key the system comes into the function for Parameter setting 2 Set the parameters by pressing Or key weight value for empty refrigerant tank alarm SET1 percent value of full refrigerant tank alarm SET2 recharge compensation amount SET3 weight value of empty tank SET4 max capacity of tank SE To total used alarm time of compressor MRF 301M A C Service Station User s Manual SET6 total used alarm time of drying filter SET 7 total used alarm t
12. instructions regarding use The exclusive remedy for any automotive meter found to be defective is repair or replacement and LAUNCH shall not be liable for any consequential or incidental damages Final determination of defects shall be made by LAUNCH in accordance with procedures established by LAUNCH No agent employee or representative of LAUNCH has any authority to bind LAUNCH to any affirmation representation or warranty concerning LAUNCH automotive meters except as stated herein Disclaimer THE ABOVE WARRANTY IS IN LIEU OF ANY OTHER WARRANTY EXPRESSED OR IMPLIED INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE Order Information Replaceable and optional parts can be ordered directly from your LAUNCH authorized tool supplier Your order should include the following information Quantity Part number Item description Customer Service If you have any questions on the operation of the unit please contact us Tel 400 830 5166 Fax 86 755 84528830 E mail overseasales cnlaunch com If your unit requires repair service return it to the manufacturer with a copy of the sales receipt and a note describing the problem If the unit is proved to be in warranty it will be repaired or replaced at no recharge If the unit is proved be out of warranty it will be repaired for a nominal service recharge Send the unit pre paid to Attn Overseas Department LAUNCH Industrial Park
13. replacement ee ee ee 14 8 Cleaning filter Screen ee ee ee ee 14 9 Adding new oil to new bottle ee 14 10 Empty the Used Oil Bottle ee 15 Troubleshooting de ee Ee eo EE 15 Appendix 1 Main coupleS iese eee 17 LAUNCH Outline Different from the general home or commercial air conditioner the compressor in automotive A C is semi closed and the working surroundings are much more complicated and abominable such as the factors of high temperature or contamination of fuel air and water jolt vibration which may cause the leakage and contamination of the auto A C refrigerant reducing the refrigerant effect So in summer the refrigerant recharging is the main job for each workshop But blind recharging may lead to a lot of problems One wrong operation is to recharge refrigerant directly without vacuuming the A C system because the air inside the A C system cannot be drained out completely and may even cause bad results as bellows 1 Insufficient refrigerant Because the air exists inside the A C system one hand it takes some room on the other hand it causes the pressure inside A C system and the pressure in refrigerant tank balances and the recharging can t be achieved 2 Redundant air left in A C system may reduce the A C power and cooling performance Vacuum for A C system which not only extract the air but also water The water mixes into the A C system easily But it is very bad for the auto A C system
14. value 6 When setting the weight value of empty tank the SET 4 will be displayed on Parameter area for about 2 seconds and later the desired set value will be displayed At the moment Kg indicator comes on and its unit is Kg Set the value by pressing key and key and then press OK key to confirm the value 7 When setting the Max capacity of tank the SET 5 will be displayed on Parameter area for about 2 seconds and later the value required will be displayed At the moment Kg indicator comes on and its unit is Kg Set the time value by pressing key and key and then press OK key to confirm the value 8 When setting total used alarm time of compressor the SET 6 will be displayed for about 2 seconds and then the value required will be displayed on the PARAMETER area at the moment Min indicator comes on and its unit is hour Set the time value by pressing key and key and then press OK key to confirm the data 9 When setting the total used alarm time of drying filter the SET 7 will be displayed for about 2 seconds and then the time value required will be displayed on the PARAMETER area at the moment Min indicator comes on and its unit is hour Set the time value by pressing key and LAUNCH 7 1 2 3 key and then press O
15. AUNCH MRF 301M A C Service Station User s Manual Other product names used herein are for identification Trademark Information purposes only and may be trademarks of their respective owners LAUNCH disclaims any and all rights l in those marks LAUNCH is a registered trademark of LAUNCH TECH CO LTD short for LAUNCH in China and other countries All other LAUNCH trademarks service marks domain names logos and company names referred to in this manual are either trademarks registered trademarks service marks domain names logos company names of or are otherwise the property of LAUNCH or its affiliates In countries where any of the LAUNCH trademarks service marks domain names logos and company names are not registered LAUNCH claims other rights associated with unregistered trademarks service marks domain names logos and company names Other products or company names referred to in this manual may be trademarks of their respective owners You may not use any trademark service mark domain name logo or company name of LAUNCH or any third party without permission from the owner of the applicable trademark service mark domain name logo or company name You may contact LAUNCH by visiting Launch at http www cnlaunch com or writing to LAUNCH Industrial Park North Wuhe Avenue Banxuegang Industrial Park Longgang Dist Shenzhen PR China to request written permission to use Materials on this manual for purposes or fo
16. K key to confirm the data 10 When setting the parameter of total used alarm time of vacuum pump the SET 8 will be displayed for about 2 seconds and then the time value required will be displayed on the PARAMETER area at the moment Min indicator comes on and its unit is hour Set the time value by pressing key and key and then press OK key to confirm the data 11 When setting the run recycle function or not when vacuuming the SET 9 will be displayed for about 2 seconds and then the ON or OFF will be displayed on the PARAMETER area at the moment Min indicator comes on Set the parameter ON indicating run recycle when vacuuming OFF indicates do not run recycle by pressing key and key and then press OK key to confirm it 12 The user must turn off the power and return on the unit to come into the normal function status DNote The user must be careful when performing system parameter setting for the improper operation will cause incorrect parameter 5 Resuming default value Hold and press OF key and meanwhile turn on the power switch until the is displayed on PARAMEETER area wii a con of ringing Loose CS key and the unit comes into the function of Resuming default value At this time all displays on PARAMEETER area go out Press OK key the operation ends with a sound of r
17. ame as original refrigerant hose Os EIE EE AE efter sceen Rer es same as orginal 6 Vacuum Pump Maintenance pump oil with high quality to make the oil level to the middle position of the sight glass In order to ensure the normal use performance of G Close high and low pressure handvalves and vacuum pump supply vacuum pump oil in time with run the vacuum function the same type when the vacuum pump oil level is less H Check the oil level after vacuuming for 1 minute than the lowest scale Replace the vacuum pump oll if the level is lower than the sight glass level with high quality in time when it becomes turbid or slowly supply the oil with same type into vacuum emulsified pump until the level is up to the medium position 1 Vacuum pump oil supply of sight glass A Open the front panel of the unit and locate the Screw the oil fill plug tightly and install the front vacuum pump panel to original position B Unscrew the red oil fill plug on the top of the right side of the vacuum pump refer to Fig 3 C Close the high and low pressure hand valves and then run the vacuum function Oil D Check the oil level after vacuuming for 1 minute fill f the level is lower than the lowest level of the sight glass slowly supply the oil with same type into vacuum pump until the level is up to the middle position of sight glass E Screw the oil fill plug tightly and install the front panel to original position 2 Vacuum pump oil r
18. area and its temperature is within 10 C 50 C 2 To ensure operation safety please confirm that the unit and the power socket are well grounded JN Warning If an extension cord is necessary a cord with a current rating equal to or more than that of the equipment should be used 4 Adding Refrigerant manual adding When the refrigerant amount inside tank is less than the set value it is suggested to keep 5kg or so adding refrigerant are required Add refrigerant to tank with the function of Adding refrigerant in System function the detailed procedure is shown as follows 1 Open the valves for gas refrigerant port and liquid refrigerant port on the tank 2 Connect the supply hose for new refrigerant to the filling port of the unit and open the bottle valve 3 Hold amp press Stop key and meanwhile turn on the power of the unit and it comes into the status of System Function Select Refrigerant supply function Auto mode indicator comes on and press the Run key to add refrigerant MRF 301M A C Service Station User s Manual LAUNCH MRF 301M A C Service Station User s Manual 5 Vulnerable parts list EE Specifications after Specifications replacement AC250V 10A n AC250V 15A g IE QUICK pecial for R134a 1PCS same as original connector female 4 EDE Saure QUICK 6 pecial for R134a 1PCS same as original connector female High pressure Special for R134a 1PCS S
19. arge amount is less than set recharge amount Through this function can compensate for pipes lose to ensure there is enough refrigerant in auto A C system Resuming default value To avoid the parameter being set confusedly user can perform this function to return to the parameters set at the factory to ensure normal use Calibration of electronic scale After the refrigerant tank is replaced or the unit is used for a long time the weight value displayed on electronic scale has a certain difference Resume the precision of electronic scale through this process Refrigerant supply auto Supply When the quantity of refrigerant inside tank is less than a certain amount refrigerant supply should be performed User could supply refrigerant through manual supply in the subsidiary functions or when selecting Recharging item the unit will automatically judge if the refrigerant needs to be supplied When the quantity of refrigerant is less than 4 5kg the unit will prompt to supply refrigerant and the amount could be set After the amount is well set the unit will supply refrigerant The supplying will end when the amount reaches up to set amount or the Stop key is pressed Specifications EE Working environment Ambient temperature 10 45 C Relative humidity lt 90 Specifications Power supply 1220V 10 50Hz L1110V 10 60Hz Evacuating air speed of vacuum pump 4 5CFM Compressor power 3 8HP Acc
20. e 5 EOOR Note for adding compressor cooling oil MRF 301M A C Service Station User s Manual Phenomena The unit displays EOOR and the alarming sound will be heard when performing the recovery item recovery item under auto Mode and recycle item Meaning The used time of compressor reaches up or exceeds the maintenance time Handling solution check if the cooling fan works normally if not supply proper lubricating and then check if the working performance of compressor is normal eg If the extracting speed of the refrigerant when recovering is greatly reduced supplying compressor lubricating oil is required through the return port of compressor it is advisable to operate the operation by professional personnel Reset the total used time of compressor under the parameter inquiry function Refer to the above section for resetting 6 EOOVE Note for adding vacuum pump oil Phenomena The unit displays EOOV and the alarming sound will be heard when performing the vacuum process vacuum process under auto Mode Meaning The total used time of vacuum pump reaches up to or exceeds maintenance time Handling solution Check if the vacuum pump oil is not enough or metamorphic supply oil or replacing oil refer the above section for detailed way Reset the total used time of vacuum pump under parameter inquiry function Refer to the above section for resetting 7 EOOF Note for replacing drying filter Phenomena The unit dis
21. edures such as recovery vacuum adding cooling oil and recharging of refrigerant 6 key It is for function selection such as recharging vacuum recovery recycle and auto mode item C Parameter 1 Kg When the indicator comes on what the LED displayed value is the refrigerant weight value 2 Min When the indicator comes on what the LED displayed value is the running time 3 and OK key When selecting Recharging item the system default is the set value of last recharging The user can set the recharging quantity of refrigerant required by pressing or Key then press the OK key to confirm the value When selecting Vacuum item the system default is the set time of last vacuum The user can set the time of vacuum by pressing or key then press the OK key to confirm the data PARAMETER MRF 301M A C Service Station User s Manual ra T Ed i r ima ALARM P EE High pressure Alarm EEEE Full Tank Afarm Ka aoe Alarm When selecting Recycle item the system default is the set value of last recycling Set the time of recycling by pressing or key and press the OK key to confirm the time value When selecting Auto Mode two parameters are required to set One is the quantity of refrigerant recharging the other is the time of vacuum The first step set the quantity of refrigerant recharging the syste
22. eplacing A Open the front panel of the unit and locate the vacuum pump B Open the handvalve on the side panel and keep Oil the high and low pressure ports opening to drain atmospheric air plug C Unscrew the oil drain plug at the bottom of the right side of the vacuum pump refer to Fig 3 and contain the used oil with proper container D Run the vacuum function to lead the used oil to container until there is no oil flowing out E Screw the oil drain plug tightly Fig 03 F Open the oil fill plug and add new vacuum LAUNCH 7 Drying filter replacement Replace it immediately when the unit displays EOOF or the color of sight glass becomes pink indicates the defective drying filter to make sure that the recovered refrigerant confront with the use requirement Note that its specifications of the new drying filter should be same as that of the original one Purchase the drying filter from the local branch or dealer Please wear essential protective goggles and respirator detailed procedures are shown as bellows 1 Open the rear panel of the unit and then close the valves on the vapor and liquid ports L and V of the tank Run the Recycle function for 5 10 minutes and turn off the power 2 Close the valves of the vapor and liquid ports of the refrigerant tank 3 Open the front panel of the unit and locate the drying filter refer to Fig 4 4 Loosen the nuts at the ends of the drying filter with two pieces of
23. es into the state 2 Main Couples Picture Ray High pressure quick connector T Picture Name Low pressure refrigerant hose MRF 301 M A G Service Station User s Manual of the calibration of electronic scale To calibrate the linearity of electronic scale 5 Hold amp press Run key and meanwhile turn on the power of the unit and it comes into the parameter setting status The following parameters can be set weight value for empty refrigerant tank alarm percent value for full refrigerant tank alarm recharge compensation amount weight of refrigerant tank max capacity of refrigerant tank the total used alarm time of compressor drying filter and vacuum pump run recycle function or not when vacuuming 6 Hold and press Stop key and meanwhile turn on the power of the unit and the unit comes into the State of vacuum for system nitrogen supply and refrigerant supply After the refrigerant tank and drying filter is replaced it is necessary to run the vacuum function to vacuum for all pipes The nitrogen supply function can test the sealing of the pipelines If the refrigerant inside tank is not enough run the function of refrigerant supply function to supply refrigerant DNote The user must be careful when performing system parameter setting for the improper operation will cause incorrect parameter L a H r 4 T V L L de che HII of Name Tap valve L
24. frigerant after the filling stops 5 Set the recharging amount of refrigerant according to the amount of refrigerant desired by vehicle Press key once to increase decrease 0 01 Kg the quantity of recharging is set at least 0 05 Kg Press OK key to confirm the quantity of refrigerant LAUNCH recharging The recharging value is on the flashing state before it not being confirmed 6 Open the high pressure hand valve H and close the low pressure hand valve L on the side board 7 Press the Run key and the recharging begins The LED displays the recharging quantity of the left refrigerant Press Switch key the quantity of the left refrigerant recharging and total weight of refrigerant inside tank will be displayed in turn on the PARAMETER area When the recharging speed is slow or there is a little quantity of refrigerant that can not be recharged into the A C system close the high pressure hand valve H and open the low pressure hand valve L on the side board Start the A C system to recharge with low pressure sucking way the recharging operation ends when the display is 0 8 Close high and low pressure hand valves H and L on the sideboard valves for new and used oil bottles 9 Turn off the power switch and clean up pipes 10 Turn the transmission screw clockwise under the electronic scale to ensure that the electronic scale is in protective state A Warning Do not open high pre
25. fully filtered the regenerative MRF 301M A C Service Station User s Manual refrigerant as the fresh one can be utilized MRF 301M is environmental and economic equipment which has achieved the refrigerant recovery purge save vacuum for A C and refrigerant recharging The unit is accepted by more and more workshops and special repair shops Introduction MRF 301M A C service station has five primary functions such as refrigerant recovery recharging vacuum auto mode and recycle meanwhile various subsidiary functions such as parameter setting alarming note information inquiry system function and auto supply refrigerant with simple operation less maintenance and high efficiency excellent performance Primary functions Recovery To recover and purify the residual refrigerant from the A C system and then save the recovered refrigerant Vacuum To vacuum for auto A C system and drain the other gas and vapor inside system completely and meanwhile benefits the liquid refrigerant recharging amp Recharging To recharge a certain quantity of purified liquid refrigerant into the auto A C system Recycle To recycle the refrigerant saved for a long time inside tank and resume the refrigerant performance meanwhile increase pressure inside tank and recharging speed Auto Mode After corresponding parameters are well set the unit could complete the recovery vacuum recharging process automatically saving the o
26. higher than the surface of hose mouth to avoid the air coming into auto A C system Close the valve for new oil bottle after the filling finishes Select the Recharging function in Item column If the weight of the refrigerant inside tank is less than the set weight value for empty refrigerant tank alarm E002 on Parameter area will display for 2 seconds And meanwhile fill the refrigerant in time If the amount of the refrigerant inside tank is less than a certain amount the unit will display FILL information indicates that the quantity of the refrigerant inside the tank is not enough and waiting for check if the refrigerant needs to be added A If the FILL flashes ten times but it is not confirmed within this period The unit will enter the state of setting recharging amount B If the OK key is pressed the default supply quantity of refrigerant required will be displayed Adjust the quantity of refrigerant by pressing and key an press the OK key to confirm Connect the external tank with the enough refrigerant to the fill port on the unit through the hose Pressing Run key starts to fill The FILL and the filled amount of refrigerant will display alternately during filling process and the filling will stop until the supplied amount of refrigerant reaches up to the set amount or the Stop key is pressed C The unit will display the default recharging amount of re
27. ime of vacuum pump SET8 recycle or not when vacuuming SET9 3 When setting the weight value of empty refrigerant tank alarm the SET1 will be displayed for about 2 seconds and then the set weight value required will be displayed on the PARAMETER area at the moment Kg indicator comes on and its unit is Kg Set the weight value by pressing key and key and then press OK key to confirm the value 4 When setting the percent value of full refrigerant tank alarm the SET2 will be displayed for about 2 seconds and then the value required will be displayed on the PARAMETER area at the moment Min indicator comes on and its unit is Set the value by pressing key and key and then press OK key to confirm the value 5 When setting the recharge compensation amount the SET3 will be displayed for about 2 seconds and then the value required will be displayed on the PARAMETER area at the moment Kg indicator comes on and its actual unit is g Set the time value by pressing key and key and then press OK key to confirm the value 43 will be displayed for about 2 seconds and then the value required will be displayed on the PARAMETER area at the moment Min indicator comes on and its unit is second Set the time value by pressing key and key and then press OK key to confirm the
28. inging The user must turn off the power and return on the unit to come into the normal function status 7 6Calibration of Electronic Scale There will be difference between the displayed weight value and actual value arising from the replacement of the refrigerant tank inside the unit or the long time use of the unit recalibrate the precision of electronic scale the weight of refrigerant tank and maximum capacity of refrigerant tank with this function Procedure 1 Take refrigerant tank away from the plate to ensure that it is empty and then clean up plate 2 Hold amp press key and meanwhile turn on the power switch until the is displayed on PARAMEETER area with a sound of ringing Loose the key and the unit comes into the function of calibration of electronic scale 11 MRF 301M A C Service Station User s Manual 3 Calibrate the weight of empty plate At this time the 0 is displayed in parameter area until the Run indicator comes on Press OK key to come into next operation 4 Calibrate the linearity of electronic scale Place the reference object with10KG 20KG eg Weight onto the plate and set corresponding weight value by pressing key and key Press OK key until the Run indicator flashes The unit comes into next operation after a sound of ringing After a sound is heard the End will be displayed on Paramete
29. kins and eyes Wear protective gloves and goggles when the machine is in operation There may be oil fog spray when vacuuming for unit within started several minutes Wear protective respirator Keep away from the children and mental retardation personnel when performing the unit The person who operates the unit must be familiar with the repair and maintenance of A C system to avoid damaging the equipment and A C system MRF 301M A C Service Station User s Manual The person who operates the unit must be qualified technician and it is necessary to do operation training before operating the equipment The unit is an advanced electromechanical product including precision control components Never allow operator to make disassembly and service Only use MRF 301M indoors and in well ventilated area Do not expose it to direct sunlight or rain The unit should be placed in vertical position and do not incline or place upside down Do not contact high pressure power of the unit and repair the unit under the power is turned on to avoid electricity shock Before using the unit for the first time please do as follows open the rear board of the unit and take the fillings around the refrigerant tank and at the bottom of the electronic scale out and then check if the connection of refrigerant hose is loose Open the valves on the gas and liquid ports on the tank Run the function of vacuum for system and then keep this r
30. m default is the set value of last recharging To set the recharging a of refrigerant required by pressing or key then press the OK key to confirm the value and then the system will automatically set the time of vacuum The system default is the set time value of last vacuum To set the time of vacuum under auto Mode by pressing or key then press the OK key to confirm the data Note When the value is flashing the set value is not accepted by system Press OK key to stop flashing and the setting is completed D Alarm Display 1 High pressure alarm When the system pressure exceeds 17 5Bar the recovery recycle auto mode or refrigerant supply process will stop automatically with the sound and light alarming and the malfunction code E004 will be displayed Full refrigerant tank alarm When the refrigerant in the tank exceeds the 80 of the maximum capacity of tank the recovery operation and the auto mode will stop automatically with the sound and light alarming and the malfunction code E001 will be displayed Empty refrigerant tank alarm When the refrigerant inside the refrigerant tank is lower than the set value of the empty refrigerant tank alarm the recharging process or the auto Mode will stop automatically with sound and light alarming and the malfunction code E002 will be displayed RO me CO er LAUNCH E Function keys Run key The system starts to work
31. ng filter reaches up to the period of validity this recovery operation does not stop the unit alarms and display code E005 After the recovery is completed the drying filter should be replaced in time to ensure the dryness of the recovered refrigerant d Ifthe unit could not recover the refrigerant in 2 minutes the unit will stop automatically e If pressing Stop key the unit stops running 5 After the recovery ends slowly open the valve for used oil bottle to drain the separated used oil When the oil draining is completed turn off the valve for used oil bottle 3 Vacuum Procedures 1 Select the vacuum function If the unit checks that there is pressure in A C system it could not run the vacuum function and meanwhile the unit alarms and displays the code E003 At the moment the recovery function should be performed firstly 2 Select the Vacuum function in the Item column The time value will be display in Parameter area 3 Press key once to increase decrease one minute The time of vacuum is set at most 60 minutes and at least 0 minute Press OK key to confirm the time value of vacuum the time value of vacuum is on flashing state before it not being confirmed 4 Open the valves connected to the high and low pressure quick connectors and the high and the low pressure hand valve H L on the side board 5 Press the Run key and the unit starts
32. open the valve for liquid port on the tank 3 Re recharge the liquid recharging way after recovery or close the high pressure hand valve run recharging function and meanwhile open the auto A C 4 Fully open the high and low pressure quick connector 1 Open gas port valve 2 After the tank is cooled loosen the connection hose from the connector connected to the gas port of refrigerant tank and slowly open the valve for gas port to drain for 5 10 seconds 3 Replace high pressure switch 4 Replace the valve core inside connector at gas port LAUNCH Phenomena Code Meaning and Handing Solution 1 E001 Full tank alarm Phenomena The unit displays E001 and the alarming sound will be heard when performing the recovery item and recovery item under auto Mode Meaning The refrigerant inside the tank of the unit is full the unit could not perform the recovery and auto Mode function the functions will stop automatically stop when running the function Handing solution Some refrigerant inside tank is required to be transmitted to external tank for storing Connect the external empty tank to the high or low pressure ports through hose and open the corresponding handvalve Close the low or high pressure handvalve and open the valve of the empty tank Run the vacuum function for five minutes and then select recharging function Set the recharging quantity of refrigerant 5 kg is advisable and then run the unit 2 E002
33. otice Safety Precautions Read all service procedures and precautions installation instructions and equipment operating manuals thoroughly Failure to observe these precautions or the improper use of equipment could result in property damage serious injury or death Never allow improperly trained personnel to perform these procedures or operate equipment Read and understand the User s Manual before attempting to operate the MRF 301M The unit is only used for the recharging and recovery of R134a Do not smoke in proximity to the machine while it is in operation Do not use the machine in proximity to sources of heat and fire Before performing any operation check the vehicle use for the type of refrigerant used by the auto A C system Various refrigerants cannot be mixed After the operation is completed always close high and low pressure hand valves HL on the side board of the unit vales for new and used oll bottles When it is in operation keep the hoses away from rotating elements and hot parts such as cooling fans radiators etc Check the oil levels of the new used oil bottle before beginning operation Please dispose the used oil inside used oil bottle according to the environment requirement and keep the used oil bottle empty A certain concentration of refrigerant may cause loss of consciousness or death should prevent the volatile gas from contacting operator s exposure parts such as s
34. ow pressure 20 102100065 High pressure switch 102100066 Low pressure switch High pressure quick female ad connector 403240110 Low pressure quick female connector 104120055 Refrigerant hose red 1 8m OT 9000 ie da f I Ro NO NO RO Co PD A CO Co ON KK LAUNCH MRF 301M A C Service Station User s Manual EER 104120056 Refrigerant hose blue 1 8m 104120057 Refrigerant hose yellow 0 9m 2205010268 Control panel PCA 2205010267 o 102170037 Weight sensor 50Kg i Had 1105010452 VDE L 1105010453 CCC Power cables at 1105010454 CUL 102100098 Button switch 104990006 Oil bottle 102100031 Boat switch Driving board PCA O oo DD OD OD No Do NO No NO dr O I O On Se CO CO J LAUNCH MRF 301M A C Service Station User s Manual Warranty North Wuhe Avenue Banxuegang Industrial Park THIS WARRANTY IS EXPRESSLY LIMITED TO Longgang Dist PERSONS WHO PURCHASE LAUNCH PRODUCTS Shenzhen Guangdong Province FOR PURPOSES OF RESALE OR USE IN THE P R China ORDINARY COURSE OF THE BUYER S BUSINESS LAUNCH electronic product is warranted against defects in materials and workmanship for one year 12 months from date of delivery to the user This warranty does not cover any part that has been abused altered used for a purpose other than for which it was intended or used in a manner inconsistent with
35. ow pressure quick connector High pressure refrigerant hose LAUNCH Operation illustration The normal operating procedures if there is refrigeran the unit low pressure port Recharge refrigerant 1 Preparation If you use the unit for the first time please refer to this manual for safety precautions 1 Check if the vacuum pump oil is enough the level should be kept to half level 2 Add proper new cooling oil into new bottle comply with the requirements of auto A C system to be maintained and empty the used cooling oil from used oil bottle and open the valves for the new and used oil bottles Connect red high pressure hose to high pressure connector of auto A C system and blue low pressure hose to low pressure connector of auto A C system At this time connectors are in the closed state If the air entering the high pressure hose and low pressure hose during connecting perform vacuum function firstly the ways are Be sure that the valves for high and low pressure quick connectors connected to the auto A C system are closed screw to the top end open the high and low pressure valves H and L on the side panels and run the Vacuum function for 1 minute After finishing open the valves for high and low pressure quick connectors connected to the auto A C system de er gt Connect the hoses according to the high pressure hose to high pressure port low pressure hose to MRF 301M A C Service
36. peration time Subsidiary functions Vacuum leak check Keep for about 10 15 minutes when the vacuum for system is completed There is leakage in the system if the pressure increases Refrigerant measurement To live display the quantity of refrigerant recharged and recovered New used oil exchange To drain the used cooling oil inside auto A C system and add new cooling oil to keep the use performance of auto A C system amp Vacuum for system During the maintenance process of the unit eg Replacing the drying filter or filter or refrigerant tank the air may enter the pipes At this time the air needs to be extracted completely through this function Leak check for nitrogen supply In order to ensure the sealing of the unit supply nitrogen for the pipes system after the unit is maintained LAUNCH through this function If the pressure on gauge P does not decrease fully indicates that the sealing is good Component self test Check if main components work normally through the function making easy repair and troubleshooting Information inquiry To inquire the used time and times of main components making available for after sales service Parameter setting User set the related parameters according to the requirements and using habit to achieve the best performance of the unit Recharge compensation amount setting A small quantity of refrigerant will always remain in pipes when recharging so the actual rech
37. plays EOOF and the alarming sound will be heard Meaning The total used time of compressor reaches up or exceeds the replacing time Handling solution Replacing the drying filter with same specification immediately refer to above section for detailed procedure Reset the total used time of vacuum pump under the parameter inquiry function Refer to the above section for resetting Q Note The unit needs to be repaired and maintained by professional technician A Warning The compressor vacuum pump condenser and solenoid valve will heat when performing repair and maintenance always be careful to avoid scalding LAUNCH MRF 301M A C Service Station User s Manual EER Appendix 1 Main couples 1102990044 L1Compressor 220V 1102990086 L1Compressor 110V 1103260065 Vacuum pump 220V 1103260076 Vacuum pump 110V T 1103150012 Fan 220V 1102250004 Fan 110V 103260001 Drying filter ma 103260064 Oil separator R 103260063 Oil separator for heat exchange 1102240037 1Solenoid valve 220V 1Solenoid valve 110V 1102240022 103170004 Refrigerant tank 17 10 11 2 1 LAUNCH MRF 301M A C Service Station User s Manual EER 103240204 Filter 103240194 Moisture indicator 102210049 Switching type power L 1102110075 1Contactor 220V 1102110076 1Contactor 110V 103160017 Ball valve 199010007 Refrigerant gauge high pressure 199010008 Refrigerant gauge l
38. port bolt for electronic scale is screwed 3 The valve for refrigerant tank is closed 4 The quick connector is closed 9 he quick connector is damaged Low vacuum the unit The recovery amount has no change 6 The refrigerant tank is full 7 The system pressure is too high 1 The refrigerant inside tank is not enough 2 The valve for liquid port on the tank is not fully opened 3 The A C system pressure is too high and the liquid recharge way could not be adopted 4 Quick connector is not opened Recharging is not speed is slow 1 Gas port valve of tank does not open 2 There is air inside tank 3 High pressure switch is damaged 4 Valve core inside connector connected to gas port is damaged High pressure alarm continuously arises during Recovery Refrigerant supply process 1 Add oil up to the center line 2 Check if the connection is well or the thread is loose 1 Discharge oil to the center line 2 Perform the recovery function firstly 1 Replace the fuse Note that if the fuse on PCB is also damaged 2 Replace PCB 3 Reconnect the power cables 1 Stop recovery 2 Unscrew the support bolt at the bottom of the weight sensor 3 Open the valves for gas and liquid ports on the tank 4 Fully open the high and low pressure quick connector d Replace connector 6 Transfer proper refrigerant to other tank 7 Release pressure 1 Supply refrigerant with about okg 2 Fully
39. r area the calibration is completed 5 The user must turn off the power and return on the unit to come into the normal function status Warning Label 1 Hazard Warning CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 2 Vacuum Pump The vacuum pump oil level should be Kept near to the centerline Maintenance 1 Transportation and Storage of the Unit The unit should be fixed on the special base seat during transportation It is suggested to lift and transport the unit with hand or forktruck 1 1 Transportation a Transport the unit under the state that it has been installed on base seat and packed with box to avoid acute shock and impact Firstly pack the unit with the matter similar with plastic tapes and then place it in box but should add the filling material such as foam or sponge etc between the unit and packing box to avoid scratching the outside surface when the unit shakes b Do not allow the maximum incline angel to exceed 45 Do not place upside down 1 2 Storage Store only in dryness and well ventilated area LAUNCH 2 Transportation and Storage of Unpacked Unit 1 Transport only with hand or soft belt 2 Not suit for long distance transportation 3 It should be put in the non direct sunshine and well ventilated area 3 Installation Environment 1 The distance between the unit and outside wall or other goods should be kept over 200mm The unit should be kept in well ventilated
40. r all other questions relating to this manual Copyright Information Copyright 2000 by LAUNCH TECH CO LTD All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of LAUNCH The information contained herein is designed only for the use of this unit LAUNCH is not responsible for any use of this information as applied to other units Neither LAUNCH nor its affiliates shall be liable to the purchaser of this unit or third parties for damages losses costs or expenses incurred by purchaser or third parties as a result of accident misuse or abuse of this unit or unauthorized modifications repairs or alterations to this unit or failure to strictly comply with LAUNCH operating and maintenance instructions LAUNCH shall not be liable for any damages or problems arising from the use of any options or any consumable products other than those designated as Original LAUNCH Products or LAUNCH Approved Products by LAUNCH General Notice AUNCH The equipment is for specialist or qualified technician use only Disclaimer All information illustrations and specifications contained in this manual are based on the latest information available at the time of publication Launch reserves all the right to make changes at any time without n
41. spanner note that there is little quantity of gas out in pipe take down the used drying filter 5 Install new drying filter with the same specification as the original direction with the actual arrow tight the thread well with two pieces of spanners 6 Perform the operation of vacuum for system and check for leaks 7 If there is leakage check and solve it until there is no any leakage and then install the front panel well 8 Open the two valves of the refrigerant tank and then install the rear panel Fig 04 Drying filter installation direction is shown as the arrowhead Note After the filter net is replaced the pipeline must be well connected to avoid the leakage 8 Cleaning filter screen When replacing drying filter it is advisable to clean the MRF 301M A C Service Station User s Manual filter screen simultaneously cleaning procedure is shown as follows 1 Locate the filter and loosen the ends of the filters with two pieces of spanners and take it out 2 Unscrew the filter and take the filter screen out and then flush it 3 Replace the o ring with the same specification and install the filter as the original position and then tighten the connection thread well 4 Before the cleaned filter being installed on the unit it should be checked for the overall leakage to ensure that the sealing is good 5 Install the filter to the pipes and tighten the connection thread with two pieces of spanners
42. ssure hand valve H when starting the auto A C system to avoid the high pressure entering refrigerant tank Otherwise the tank may be broken 5 Recycle If the refrigerant inside tank of the unit is stored for a long time some water and cooling oil may reside into the tank Perform recycle operation to make the refrigerant recycling in the pipelines and achieve the purpose of regenerative refrigerant through a series purging process of drying filtering and oil gas separating Procedures 1 Turn on valves for gas port and liquid port on the refrigerant tank 2 Press OF key and select Recycle function in ITEM area The time value will be displayed in Parameter area 3 Press key once the recycle time value will increase decrease one minute the recycle time could be set at most 50 minutes at least 1 minute press OK key to confirm the recycle time value the recycle time value flashes before it is confirmed 4 Press the Run key and the unit starts to perform the recycle operation the LED will display the left time When the displayed value is 0 the recycle process ends or press Stop key to stop the recycle process 5 During running if the system pressure is high MRF 301M A C Service Station User s Manual 17 5bar the recovery operation will be stopped forcibly and meanwhile the unit alarms and the code E004 will be displayed It is mainly for the
43. to perform the vacuum operation 6 During vacuuming If the set recycle or not when vacuuming parameter is ON the unit automatically run recycle function after running the vacuum function for 1 minute and meanwhile the Recycle indicator will flash and then the recycle and vacuum functions run at the same time The unit will stop the recycle function until the left time of vacuum is 2 minutes If the set time of vacuum is less than 3 minutes the recycle function does not function 7 During the vacuum process the system will display the left time of vacuum automatically When the time of vacuum is up or pressing Stop key the vacuum process ends MRF 301M A C Service Station User s Manual ED Note There may produce oil fog when starting to vacuum Please wear protective respirator 4 Cooling Oil and Refrigerant Filling Procedures 1 After the recovery and vacuum process ends 2 3 WY WY check the quantity of the used oil separated from A C system and make sure that the quantity of the new oil in the new bottle is 30 ml more than that of used oil Slowly turn on the valve for new oil adding Note the high pressure hand valve should be closed before adding new oil to make sure that the new oil is sucked into the A C system until the quantity of the sucked oil is 10ml more than that of the used oil Note the oil inside new bottle can not be sucked fully the level of new oil should be
44. ugh refrigerant to the supply port on the unit through the hose press OK key to supply What the Parameter area displayed is the supplied amount The unit will stop recharging when the recharged amount reaching up to the set value or the Stop key is pressed 7 The user must turn off the power and return on the unit to come into the normal function status 7 2 Component self test When doing maintenance for unit check if the compressor vacuum pump and solenoid valve work normally through Self test function Procedures 1 Press and hold key and meanwhile turn on the power switch until the is displayed on PARAMETER area with a sound of ringing Loose the key and the unit comes into the function of component self test 2 Press key and key the display in PARAMETER area will be displayed among V2 VO VTU Vn is for solenoid valve n C for compressor and P for vacuum pump in turn Press OK key corresponding component wil close after opening for 2 seconds The operator can hear the sound of action The user must turn off the power and return on the unit to come into the normal function status D Note When running the function of component self test and the solenoid valve 7 is open the operator must be careful with the 3 Ne vacuum pump oil that flying out from the vacuum pump for the pressure inside pipelines
45. unning state for 5 minutes to check for leaks op Note Specifying operations that require attention when operating the equipment AN Warning Specifying a possible hazard that could result in damage to the machine or personal injury LAUNCH MRF 301M A C Service Station User s Manual Table Of Content ME 2 OO Ua UON Senet en 2 Primary functions eg ED ee 2 Subsidiary UTNE ra 2 SPECNIEANONS sanert 3 STU EE N 3 N El Ed EE A ET or 3 Tle GCONWON Panel issie Re ee ee 4 2 MEN CUPEN 5 Operation illustratiON ee ee ee ee ee ee ee ee ee 6 B Ss ARAN tos Ds Oe ie 6 2 RIAA Recovery vesen 6 3 VACUUM ieie a 7 4 Cooling Oil and Refrigerant Filling 7 DR 8 OAU Mode is Ee ge ee Ee es 8 7 Subsidiary FUNCTIONS ee ee ee ee ee 9 7 1 System FUNCTION ee ee ee ee ee ee 9 7 2 Component self test ee ee ee 9 7 3 Total used time and times inquiry 9 7 4 Parameter Setting eee eee 10 7 5 Resuming default value oo eee 11 7 6Calibration of Electronic Scale 11 Vvarningkabel RE Ee EE ee er 11 4 Hazard Warning sese eee eee 11 2 Naca PUM D ie ee 11 MAME es ie EE ee EE EE ep 11 1 Transportation and Storage of the Unit 11 2 Transportation and Storage of Unpacked Unit 12 3 Installation Environment ees sesse ee ee 12 4 Adding Refrigerant manual adding 12 5 Vulnerable parts list cece 13 6 Vacuum Pump Maintenance esse see 13 7 Drying filter
46. uracy of electronic scale 10g Maximum weight of the electronic scale 50Kg Drying filter 1 4 connecting port Capacity of refrigerant tank 23 5L MRF 301M A C Service Station User s Manual Maximum working pressure 17 5bar Maximum recovery speed 0 5Kg Min Maximum recharging speed 2Kg Min Size 560x653x1250mm3 Noise 70db Net weight 90kg Gross weight 110kg Structure 1 Main Unit LAUNCH 1 1 Control Panel The control panel is shown as in Fig 02 i Bai ITEM SHET AL mit Recharging 22 aa dr O RL Eiee mit Auto Mode Descriptions of the control panel A Gauges 1 HIGH PRESSURE gauge displaying the pressure at the high pressure end of auto A C system 2 LOW PRESSURE gauge displaying the pressure at the low pressure end of auto A C system 3 P gauge displaying the pressure inside cylinder B Item 1 Recharging When the indicator comes on it indicates that the unit is ready for recharging operation 2 Vacuum When the indicator comes on it indicates that the unit is ready for vacuum operation 3 Recovery When the indicator comes on it indicates that the unit is ready for recovery operation 4 Recycle When the indicator comes on it indicates that the unit is ready for recycle operation 5 Auto mode When the indicator comes on it indicates that MRF 301M is ready for the auto mode operation The unit automatically runs according to the proc
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