Operating Manual
Contents
1. A WARNING To prevent personal injury and or equipment dam age read and understand all safety information contained in this manual before servicing the unit CONNECT UNIT TO 115V FAN IS RUNNING CHECK POWER DO YOU COMPRESSOR STARTS NO IS UNIT IN HIGH IS THE TANK WHEN START SWITCH PRESSURE CORD ATTACHED IS PRESSED SHUT OFF TO THE TANK 2 UNIT PUMPS INTO NO ARE VALVES OREN DOES TANK FLOAT HIGH PRESSURE SHUT FOR SWITCH WORK 2 OFF VALVES PROPERLY DOES UNIT PULL A VACUUM WHEN INPUT VALVE IS CLOSED UNIT PULLS ARE THE INTO A VACUUM HOSES TIGHT 79 TROUBLESHOOTING ENDS CALL PROMAX FOR FURTHER ASSISTANCE 1 800 327 5060 ONE YEAR WARRANTY MFG Promax products are warranted to be free from defects in workmanship and materials for a period of one year from date of purchase THE FOLLOWING RESTRICTIONS APPLY The warranty applies to products in normal use only as described in the operating manual The product must also be serviced and maintained as described therein If the product fails it will be replaced at the option of SPX Corporation Warranty service claims are subject to factory inspection for product defect s If during the warranty evaluation it is determined that a filter has not been used or that the filter was not properly main tained or that the machine has been used in any way other than the purpose for which it was designed SPX reserves the right to void the warranty Al2. If accidental system discharge occurs ventilate the work area before resuming service TO REDUCE THE RISK OF FIRE use the shortest possible extension cord with a minimum size of 14 AWG An extension cord may overheat and cause fire TO REDUCE THE RISK OF FIRE do not use the unit in the vicinity of spilled or open containers of gasoline or other flammable substances DO NOT USE COMPRESSED AIR TO PRESSURE TEST OR LEAK TEST THE UNIT OR AIR CONDITIONING SYSTEM Some mixtures of air and refrigerant are combustible at elevated pressures These mixtures are potentially dangerous and may result in fire or explosion causing personal injury or property damage DO NOT MIX REFRIGERANT TYPES through a system or in the same container mix ing of refrigerants will cause severe damage to the recovery unit and the system being serviced ELECTRICITY INSIDE THE UNIT HAS A RISK OF ELECTRICAL SHOCK Exposure may cause personal injury Disconnect the power before servicing the unit Refrigerant recovery is the process of taking refrig erant out of a system and storing it in a tank The following is critical information on how to achieve the best refrigerant recovery results safely and quickly 1 Identify the refrigerant type and quantity in the system that is to be serviced Minimax is approved for use with the following catagory Ill IV and V refrigerants Per ARI 740 R 12 R 402A R 22 R 402 B R 134A R 404A R 401A R 406A R 401B R 407A
3. R 401C R 407 B R 407C R 407D R 408A R 409A R 410A 411 411 R 412 R 500 R 502 R 507 R 509 A filter must always be used and replaced frequently Failure to use a fil ter will invalidate your warranty It is rec ommended that a clean filter be used for every service job A filter will prevent con tamination from entering the Minimax which will reduce the risk of damage Each filter needs to be labeled and used for one type of refrigerant only A warnine Open service and cylinder valves slowly This allows for rapid shut off of gas flow if there is any danger Once it is determined that there is no danger the valves can be opened fully Isolate large amounts of refrigerant and close off valves after use If a leak develops in the system the refrigerant will not escape Keep all connections to the refrigeration system dry clean Damage will occur if moisture is allowed to enter the system Promax strongly recommends the use of the optional 80 Capacity Shutoff Kit KT 5001 When installed and used with a recovery tank that has an internal float switch the Minimax UNDERSTANDING REFRIGERANT RECOVERY shuts down automatically when the tank is 80 full The Minimax is pre wired for this kit from the factory The Minimax KT is available with the 80 Capacity Shutoff Kit installed Minimax has an internal pressure shutoff switch If the system pressure goes above
4. Proceed with the self purge procedure on page 10 NOTE If the recovery process is very slow and frost or condensation is visible on some plumbing or components of the system this is a sign of trapped liquid refrigerant Use a heat gun to vapor ize this trapped liquid If you can t determine where the trapped liquid is turn the system compressor on for a few seconds to move the liquid and gen erate heat to vaporize it RECOVER Turn knob to liquid port When liquid is removed move to full open for vapor y MINIMAX SELF PURGE Close the ports of the system being serviced 7 Close the ports on the recovery tank and the Minimax Close the input port on the Minimax NOTE Close the outlet port on the Minimax before turning off the unit or refrigerant will Turn off the Minimax backfill into the unit Set the Recover Purge valve to PURGE 8 Turn the Minimax off Restart the Minimax 9 Set the Recover Purge valve to RECOVER Run until desired vacuum is achieved 10 Disconnect and store all hoses 11 Replace the in line filter on the Minimax after every job PUSH PULL METHOD INSTRUCTIONS The push pull method removes bulk liquid from a system using the pressure differential created by the Minimax Push pull method only works with large systems where the liquid is readily accessi ble Do not use this method on a system that con tains less than 15 Ibs of refrigerant because it will not have the bulk liquid
5. device and if applicable its model number and manufacturer number If more than 8 devices have been acquired fill out an additional form and attach it to the first one Recovery devices that are self contained should be listed first and should be identified by checking the box in the last column on the right A self contained device is one that uses its own pump or compressor to remove refriger ant from refrigeration or air conditioning equipment On the other hand system dependent recovery devices rely solely upon the compressor in the refrigeration or air con ditioning equipment and or upon the pressure of the refrigerant inside the equipment to remove the refrigerant If the establishment has been listed as Type and or Type D in Part 2 then the first device listed in Part 3 must be a self contained device and identified as such by checking the box in the last column on the right If any of the devices are homemade they should be iden tified by writing homemade in the column provided for listing the name of the device manufacturer Homemade devices can be certified for establishments that are listed as Type A or Type B in Part 2 until six months after prom ulgation of the rule If a Type C or Type D establishment is certifying equipment six months after promulgation of the rule then it must not use these devices for service jobs classified as Type A or Type B Part 4 This form must be signed by either the owner of the
6. establishment or another responsible officer The per son who signs is certifying that the establishment has acguired the eguipment that the establishment is comply ing with Section 608 regulations and that the information provided is true and correct Send your form to the EPA office listed under the state or territory in which your establishment is located EPA REGIONAL OFFICES CONNECTICUT MAINE MASSACHUSETTS NEW HAMPSHIRE RHODE ISLAND VERMONT CAA 608 Enforcement Contact EPA Region 1 Mail Code APC One Congress Street John F Kennedy Federal Building Boston MA 02203 0001 Phone 617 565 3420 NEW YORK NEW JERSEY PUERTO RICO VIRGIN ISLANDS CAA 608 Enforcement Contact EPA Region 2 290 Broadway New York NY 10007 1866 Phone 212 637 3000 DELAWARE DISTRICT OF COLOMBIA MARYLAND PENNSYLVANIA VIRGINIA WEST VIRGINIA CAA 608 Enforcement Contact EPA Region 3 Mail Code 3AT21 841 Chestnut Street Philadelphia PA 19107 Phone 800 438 2474 ALABAMA FLORIDA GEORGIA KENTUCKY MISSIS SIPPI NORTH CAROLINA SOUTH CAROLINA TEN NESSEE CAA 608 Enforcement Contact EPA Region 4 Mail Code APT AE 61 Forsyth Street SW Atlanta GA 30303 Phone 404 562 9900 ILLINOIS INDIANA MICHIGAN MINNESOTA OHIO WISCONSIN CAA 608 Enforcement Contact EPA Region 5 Mail Code AT18J 77 West Jackson Blvd Chicago IL 60604 3507 Phone 312 353 2000 ARKANSAS LOUISIANA NEW MEXICO OKLAHOMA TEXAS CAA 608 Enf
7. in the reservoir needed to create a pressure differential This method is used on systems with a receiver tank or with greater than 20 Ibs of refrigerant or when transferring from one tank to another Refer to the diagram below The rate of liquid transfer is best when using larg er hoses and cooling the tank to lower the pres sure in it Cooling of the tank can be done before or during recovery and the tank must be partially filled with refrigerant minimum of 5 Ibs Begin by throttling the output valve then adjust the back pressure to suit the conditions and the refrigerant SYSTEM BEING LIGUID Five to ten minutes of this cooling process will improve the flow rate considerably The greater the quantity of refrigerant in the tank the longer the process will take If there are any non con densable gases in the tank this cooling process will not work Refer to the diagrams on page 12 The sight glass provides a method of determining the moisture content and guality of a system s refrigerant A warnine When using the push pull method once the pressure differential has begun it can continue and overfill the storage tank even if the tank is equipped with a float level sensor The pressure differential will con tinue to move liquid and vapor even when the machine is turned off You must manually close the valves on the tank and the unit to prevent overfilling of the recovery tank and possible personal injury OPTIO
8. 550 psi the unit shuts off The shutoff switch auto matically resets itself after the pressure drops below 300 psi A WARNING The internal pressure shutoff switch does not prevent tank over fill If the Minimax shuts off automatically and is connected to a tank the tank may be dangerously overfilled Relieve this high pressure and or tank overfill situation immediately If tank pressure exceeds 300 psi use the tank cooling process to reduce the tank pressure Refer to pages 11 amp 12 When recovering large amounts 20 Ibs or more of liquid refrigerant use the Push Pull method as described on page 11 All refrigerant systems are likely to have areas where the liquid can be trapped and slow the recovery process significantly Refer to page 9 for how to locate and recover trapped liquid refrigerant To achieve the deepest final vacuum use the tank cooling method to lower the head pres sure on a recovery tank see pages 11 amp 12 NOTE The cooling method will not work if there is no liquid in the recovery tank In this case use an empty tank that has been fully evacuated to achieve the final vacuum level required maximize recovery rates use the shortest hose length possible no longer than 3 ft is recommended and 3 8 diameter or larger Remove all unnecessary hose core depres sors and Schrader valves from all port con nections as these can restrict flow up to 90 RECOVERY TANK IN
9. EL TO OPERATE THE UNIT Before operating the unit read and follow the instructions and warnings in this manual The operator must be familiar with air conditioning and refrigeration systems refrigerants and the dangers of pressurized components If the operator cannot read this manual operating instructions and safety precautions must be read and discussed in the operator s native language Si el operador no puede leer las instrucciones las instrucciones de operaci n y las precauciones de seguridad deberan leerse y comentarse en el idioma nativo del operador Si l utilisateur ne peut lire les instructions les instructions et les consignes de s curit doivent lui tre expliqu es dans sa langue maternelle PRESSURIZED TANK CONTAINS LIQUID REFRIGERANT Do not overfill the internal storage vessel because overfilling may cause explosion and personal injury or death Do not recover refrigerants into nonrefillable containers use only federally authorized refillable containers DOT spec 4BW or HOSES MAY CONTAIN LIQUID REFRIGERANT UNDER PRESSURE Contact with refrigerant may cause personal injury Wear protective equipment including safety goggles Disconnect hoses using extreme caution DO NOT BREATHE REFRIGERANT AND LUBRICANT VAPOR OR MIST Exposure may cause personal injury especially to the eyes nose throat and lungs Use the unit in locations with mechanical ventilation that provides at least four air changes per hour
10. FORMATION NEVER use a standard disposable 30 Ib tank the type of container in which virgin refrigerant is sold to recover refrigerant Use ONLY authorized refillable refrigerant tanks Federal regulations require refrigerant to be transport ed only in containers meeting DOT specs 4BW or 4BA Awarning To prevent personal injury do not exceed the working pressure of each cylinder Recovery cylinders are designed for different pressures The Minimax is not sup plied with a recovery tank and requires the use of tanks with a minimum of 350 psi work ing pressure PROMAX strongly recommends the use of 400 psi tanks NOTE When recovering R 410A refrigerant use of a 400 psi tank is mandatory See PRO MAX Recovery Tanks under Parts and Accessories section on Page 14 3 Tanks and filters must be designated for one type of refrigerant only Before using a tank previously used for another refrigerant com pletely empty the tank and evacuate it Then purge the tank using dry nitrogen and evacu ate again Store refrigerant containers in a cool dry place Some storage cylinders have valves that are not seated when manufactured Keeping caps on valves will guard against refrigerant leak age Do not exceed 80 of tank capacity PROMAX strongly recommends the use of the Promax ADS 100 Refrigerant Scale for monitoring tank capacity Safety codes recommend that closed tanks not be filled over 80 of volume with liq uid Th
11. NAL MOISTURE SIGHT GLASS wannne To prevent personal injury a scale must be used to prevent overfilling the storage tank TANK PRE OR SUB COOLING INSTRUCTIONS 1 This process requires a minimum of 5 lbs of liq uid refrigerant in the tank Throttle the output valve until the output pres sure is 100 psi greater than the input pressure but never more than 300 psi Run until the tank is cold RECOVERY TANK PRE OR SUB COOLING FOR A FIXED HOSE SET UP MANIFOLD LIQUID VAPOR Ad WARNING To prevent personal injury a scale must be used to pre vent overfilling the storage tank NORMAL RECOVERY Tank vapor valve is closed TANK PRE OR SUB COOLING Tank vapor valve is open and both manifold gauge set valves are closed REFRIGERANT RECYCLING Current regulations state that used refrigerant must not be sold or used in a different owner s equipment unless the refrigerant has been labo ratory analyzed and found to meet the require ments of ARI 700 latest edition If the refrigerant is to be used again in the same system it is best to clean it as much as possible We recommend using the largest high acid capacity filter possible Place the filter on the suc tion inlet side of the Minimax and replace them often Some systems do not have an adequate oil sepa rator installed so the refrigerant will contain oil as you recover it If the refrigerant you are recovering is not going to be use
12. REFRIGERANT RECOVERY MACHINE USER S MANUAL SPX Corporation e Owatonna MN Toll Free 800 327 5060 Fax 866 287 7222 www PromaxRecovery com Explanation of Safety Signal Words A DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury A WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury A CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury CAUTION Used without the safety alert symbol indicates a potentially hazardous situation which if not avoided may result in property damage TABLE OF CONTENTS Safety Precautions Understanding Refrigerant Recovery Recovery Tank Information Purging Non condensable Gases Maintenance Operating Instructions Minimax Self Purge Push Pull Method Instructions Tank Pre or Sub cooling Instructions Recovery Tank Pre or Sub Cooling for Fixed Hose Set up Refrigerant Recycling Parts List Replacement Kits and Accessories Minimax Wiring Diagram Minimax KT Wiring Diagram Installation of Optional 80 Tank Capacity Sensing Components Kit KT 5001 16 Troubleshooting One Year Warranty EPA Certification Form Environmental Protection Agency EPA Instructions EPA Regional Offices SAFETY PRECAUTIONS A WARNING To prevent personal injury ALLOW ONLY QUALIFIED PERSONN
13. d in the same system and it contains oil you will need to separate the oil from the refrigerant This allows you to measure the amount of oil that needs to be charged back into this system To do this A WARNING Wear safety goggles and pro tective eguipment to prevent burns from acidic oil 1 Begin with a 30 or 50 Ib tank in line with the Minimax 2 Connect the system to the liguid port of the tank 3 From the vapor port of the tank connect to the input of the Minimax Connect another tank for storing refrigerant to the output of the Minimax Begin the recovery process NOTE If it s a large amount of liquid refriger ant place a band heater around the first tank When the recovery process is complete the oil in the first tank can be removed by applying a small amount of pressure with nitrogen to one of the ports The oil will expel from the other port Turn the tank upside down if removing the oil through the vapor port PARTS LIST 3 Description Part Description Part Description Plastic Case 11 Front Panel 100121 21 Flare Cap NB6501 Fan Grill Outlet 12 Manifold 700009 22 100343 Axial Fan 13 Input Gauge GA1500 Relay EL1500 Condenser 14 Output Gauge 24 Sensor Cord EL1420 Compressor 15 Gauge Lens 25 Capacitor EL1412 Compressor Bracket 100207 16 On Off Switch 26 Rear Panel 100538 Coupler CP1315 17 Start Switch 27 Cord Set 100162 Bell Housing 18 Red Knob 28 Pressure Switch EL2802 Moto
14. e County Zip Code Area Code Telephone Number Zip Code Area Code Telephone Number NUMBER OF SERVICE VEHICLES BASED AT ESTABLISHMENT Part 2 REGULATORY CLASSIFICATION Identify the type of work performed at your establishment Check all boxes that apply Type A Service small appliances Type B Service refrigeration or air conditioning equipment other than small appliances Type C Dispose of small appliances Type D Dispose of refrigeration or air conditioning equipment other than small appliances Part 3 DEVICE IDENTIFICATION Name of Device Manufacturer Model Month Year Mfg if any Self Contained Part 4 SIGNATURE certify that the establishment named in Part 1 has acquired the refrigerant recovery or recycling devices listed in Part 3 and that this equipment will be correctly used in service and or disposing of appliances also certify that the information supplied herein is correct and true Signature of owner Responsible Officer Date Name please print Title Public reporting burden for this collection of information is estimated to vary from 20 60 minutes per response with an average of 40 minutes per response including time for reviewing instructions searching existing data sources gathering and maintaining the data needed and completing the collection of information Send comments regarding t
15. e center of the 3 pin connector Only two wires are used in this connector Connect the 3 pin connector to its counter part already pre wired on your Minimax NOTE Confirm the two wires 1 green and 1 white are in the correct position directly across from their mating wires Connect one end of the red wire p n WR 1403 supplied with the kit to terminal 2 of the relay and the other end to the high pressure switch Secure the relay onto the two studs identified in Step 5 using the hardware installed on the studs Secure the tank sensor into the hole in the front panel with the strain relief grommet pro vided Replace two fan wires disconnected in Step 3 Secure any loose wiring with the wire ties provided Replace the plastic case halves and fasten ers Test the installation as follows Momentarily attempt to start the Minimax without the sen sor cord connected to a tank sensor The compressor should not start up Turn the Minimax off and again attempt to start the unit with the sensor cord connected to a tank with a tank capacity sensor The Minimax should function normally Disconnecting the sensor cord while the Minimax is running should cause it to shut down If the Minimax does not function correctly Disconnect the Minimax from the power supply then check the connections per the above steps and the wiring diagram at the bottom of page 15 TROUBLESHOOTING
16. e remaining 20 is called head pres sure room If you expect temperatures in excess of 135 contact the refrigerant supplier A WARNING NEVER TRANSPORT AN OVERFILLED CYLINDER Refrigerant expands when it gets warm and can cause a tank to explode if overfilled CYLINDER TEMPERATURE 60 F STARTING WITH CYLINDER 80 BY VOLUME SPACE OCCUPIED BY LIQUID 80 STARTING WITH CYLINDER 90 BY VOLUME SPACE OCCUPIED BY LIQUID 90 70 F 100 F 130 F 150 F 81 83 90 92 96 100 PURGING NON CONDENSABLE GASES FROM REFRIGERANT TANKS Allow the tank to sit undisturbed for 24 hours 5 to let any air rise to the top Connect a manifold to the tank to read the amount of pressure in the tank Determine the ambient temperature in the room Refer to a refrigerant pressure temperature chart Find the temperature on the chart and look across to the corresponding pressure for the type of refrigerant in the tank Determine 7 how that relates to the reading on the gauge If the pressure reading is higher than the pres sure shown on the chart very slowly to cause as little turbulence inside the tank as possible open the vapor port valve slightly Watch the pressure on the gauge decrease To prevent venting add 4 5 psi to the pressure shown on the chart When the gauge corresponds to that pressure close the vapor port valve Allow the tank to sit for 10 minutes then check the pressure again Repeat
17. g To prevent personal injury dis connect the unit from the power supply before performing any maintenance Refer to the wiring diagram at the bottom of page 15 during installation of the kit 1 Disconnect the Minimax from its power source Remove the fasteners from each side of the Minimax and separate the plastic case halves Disconnect the two wires to the fan Place the metal frame of the Minimax in the upright position Remove the plastic plug from the hole locat ed at the lower right of the front panel and pass the tank sensor cord p n EL1420 through it Identify the two studs located on the base directly behind the lower front panel This will be the location for the relay p n EL1500 after all electrical connections are made There are two red wires on the high pressure switch located under the start switch Disconnect the red wire that originates from the power switch Ensure the terminal multiplier p n EL1221 is placed on terminal 4 of the relay Place the red wire removed from the high pressure switch on that terminal Place the black wire from the sensor cord on the other side of the terminal multiplier on the same terminal 4 of the relay Place the white wire from the sensor cord on terminal 0 of the relay Connect the white wire from the male side of the 3 pin connector p n EL1215 to terminal 1 of the relay Verify that the green wire from the sensor cord is connected to th
18. he burden estimate or any other aspect of this collec tion of information including suggestions for reducing the burden to Chief information Policy Branch EPA 401 St S W PM223Y Washington DC 20460 and to the Office of information and Regulatory Affairs Office of Management and Budget Washington DC 20503 marked Attention Desk Officer for EPA DO NOT SEND THIS FORM TO THE ABOVE ADDRESSES ONLY SEND COMMENTS TO THESE ADDRESSES INSTRUCTIONS Part 1 Please provide the name address and telephone number of the establishment where the refrigerant recov ery or recycling device s is are located Complete one form for each location State the number of vehicles based at this location that are used to transport techni cians and equipment to and from service sites Part 2 Check the appropriate box for the type of work performed by technicians who are employees of the establishment The term small appliance refers to any of the following products that are fully manufactured charged and hermetically sealed in a factory with five or less pounds of refrigerant Refrigerators or freezers designed for home use room air conditioners including window air conditioners and packaged thermal air conditioners packaged thermal heat pumps dehumidifiers under the counter ice mak ers vending machines and drinking water coolers Part 3 For each recovery or recycling device acquired please list the name of the manufacturer of the
19. l warranty claims must be made within the warranty period Proof of purchase must be supplied This warranty is non transferable Please note that the warranty does not apply if the product or product part is damaged by accident mis use tampered with or modified in any way Normal wear items seals filters etc are specifically excluded from warranty unless found by Promax to be defective WARRANTY SERVICE This warranty is given by SPX Corporation Service under this warranty must be obtained by the following steps 1 Outside the U S A contact your local Promax Distributor 2 Inside the U S A call 1 800 327 5060 for a return material authorization RMA number THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY EPA REFRIGERANT RECOVERY AND RECYCLING DEVICE ACQUISITION CERTIFICATION FORM EPA regulations have required establishments that service or dispose of refrigerant or air conditioning equipment to certify that they have acquired recovery and recycling devices that meet the EPA standards for such devices since August 12 1993 To certify that you have acquired equipment please complete this form according to the instructions and mail it to the appropriate EPA Regional Office BOTH THE INSTRUCTIONS AND MAILING ADDRESS CAN BE FOUND ON THE NEXT PAGE OF THIS MANUAL Part 1 ESTABLISHMENT INFORMATION UNIT STORAGE ADDRESS Name of Establishment Name of Establishment Street Street City State County City Stat
20. orcement Contact EPA Region 6 Mail Code 6T EC Fountain Place 12th Floor Suite 1200 1445 Ross Avenue Dallas TX 75202 2733 Phone 214 665 2200 IOWA KANSAS MISSOURI NEBRASKA CAA 608 Enforcement Contact EPA Region 7 Mail Code ARTX ARBR 726 Minnesota Ave Kansas City KS 66101 Phone 913 551 7003 COLORADO MONTANA NORTH DAKOTA SOUTH DAKOTA UTAH WYOMING CAA 608 Enforcement Contact EPA Region 8 Mail Code 8AT AP 999 18th Street Suite 500 Denver CO 80202 2466 Phone 303 312 6312 AMERICAN SAMOA ARIZONA CALIFORNIA GUAM HAWAII NEVADA CAA 608 Enforcement Contact EPA Region 9 Mail Code A 3 75 Hawthorne Street San Francisco CA 94105 Phone 415 744 1305 ALASKA IDAHO OREGON WASHINGTON CAA 608 Enforcement Contact EPA Region 10 Mail Code AT 082 1200 Sixth Ave Seattle WA 98101 Phone 206 553 1200 655 Eisenhower Drive Owatonna MN 55060 Toll Free 800 327 5060 Fax 866 287 7222 www PromaxRecovery com Designed amp Engineered in the USA 100116 Rev D Manufactured in China
21. ow Slowly open the liquid port of the recovery cylinder to check hoses and connections for leaks Set the Recover Purge valve to RECOVER Open the output port of the Minimax Open the liquid port on the manifold gauge set NOTE Opening the liquid port will remove the liq uidfrom the system first greatly reducing the recov ery time After the liquid has been removed open the manifold vapor port to finish evacuating the system See diagram below 7 Connect the Minimax to a 115V outlet a Switch the main power switch to the ON position You will hear the fan running b Press the compressor start switch This momentary switch starts the compressor It may be necessary under certain circum stances to press this switch more than once to start the compressor OPTIONAL MOISTURE MANIFOLD SIGHT GLASS GAUGE A WARNING To prevent personal injury a scale must be used to pre vent overfilling the storage tank 8 Slowly open the input port on the Minimax a A CAUTION If the compressor begins to knock slowly throttle back the input valve until the knocking stops This will damage the Minimax if not controlled b Once the liquid has been removed from the system open the input valve fully The mani fold gauge set vapor port should also be opened at this time Run the Minimax until desired vacuum is achieved a Close the vapor and liquid ports on the manifold gauge set b Close the Minimax input port c
22. r Bracket 100209 19 Black Knob 29 Fan Grill Inlet 100180 EL1821 20 Blue Knob 30 Hose Assembly 100345 Optional components for 80 Capacity Tank Sensing Kit REPLACEMENT KITS amp ACCESSORIES PART DESCRIPTION KT3302 Piston Seal Replacement middle section of compressor KT3303 Valve Replacement Kit top section of compressor KT3307 Compressor Repair Kit all three sections of compressor KT3308 Shaft Replacement Kit bottom section of compressor KT 5001 80 Capacity Tank Sensing Kit 17605 30 Ib Recovery Tank 350 psi working pressure with capacity sensor 17121 Same as 17605 without sensor 17572 50 Ib Recovery Tank 350 psi working pressure with capacity sensor 17506 Same as 17572 without sensor RGT50HP 50 Ib Recovery Tank High Pressure 400 psi working pressure with capacity sensor ADS 100 Refrigerant Scale 200 Ib capacity with removable platform 1 2 3 4 5 6 7 8 9 0 MINIMAX WIRING DIAGRAM 3 PIN CONNECTOR FOR OPTIONAL KT 5001 INCLUDING OPTIONAL TANK CAPACITY SENSING CIRCUITRY KIT KT 5001 STARTING HIGH PRESSURE SWITCH CONNECTOR FOR OPTIONAL INSTALLATION OF OPTIONAL 80 TANK CAPACITY SENSING COMPONENTS KIT KT 5001 NOTE PROMAX also offers model Minimax KT which has the 80 Capacity Shutoff Kit installed at the factory When used with a recovery tank that has an internal float switch the Minimax KT shuts off when the recovery tank is 80 full A Warnin
23. the process as needed MAINTENANCE A WARNING To prevent personal injury Disconnect the Minimax from its power supply before beginning any maintenance A CAUTION To prevent equipment damage 9 A filter dryer MUST be used between the Minimax and the inlet hose See Flow Diagram below Failure to use a filter will invalidate the Minimax warranty Extra filtration is recommended when recovering refrigerant from a contaminated system Promax recommends using two high acid capacity filters such as Alco type EK 162 F or Sporlan type C 162 F in series When finished recovering from this system flush the Minimax with a small amount of clean refrigerant and refrigerant oil to purge any contamina tion from the unit Empty all refrigerant from the Minimax into a storage tank Liquid refrigerant left in the Minimax condenser may expand and damage components If the Minimax is to be stored or not used for a period of time completely evacuate any resid ual refrigerant and purge the unit with dry nitrogen Refrigerant Flow Diagram CONDENSER INPUT FILTER gt COMPRESSOR MOTOR ASSEMBLY OPERATING INSTRUCTIONS Inspect the Minimax thoroughly to ensure it is in good operating condition Place the Minimax on a flat level surface and make tight connections as shown in the set up diagram bel
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