Heatcraft Refrigeration Products H-IM-FL1A User's Manual
Contents
1. DISCONNECT BY OTHERS PLM 208V 39 60HZ POWER SUPPLY 9929 2 X 2H 14 AWG FI TRANSFORMER NE 14AWG 15A il It T 6 AWG 6 AWG 208V 120V 4AWG 4AWG 5 15 15 he 14 AWG UT 4 14 AWG he 14 AWG 14AWG 14 AWG M 70A J 90A 4 80A 80A 5 T6 o 9 2 25 25 25 25 25 25 25 25 8 AWG 6AWG 6 AWG a 50 75 60 60A E E A we M7 M2 M4 M6 COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3 COMPRESSOR 4 7812 7819 2816 2816 ALL COMPRESSORS THERMALLY PROTECTED SEE COMPRESSOR ELECTRIC BOX LEGEND COVERS FOR PROPER CONNECTION 1 4 COMPRESSOR CONTACTORS 1 CONDENSER FANS TP ELECTRICAL 5 12 CONDENSER FAN CONTACTORS PLM PHASE LINE MONITOR ENTRANCE CIAT CAAT C4 AUXILIARY CONTACTS PDS PUMPDOWN SWITCH CRANKCASE HEATERS R1 R4 RELAYS CB1 CB7 CIRCUIT BREAKERS SSM1 4 SOLID STATE MODULE F1 FUSE CLASS w 30 MIN TIME DELAY FCT FAN CYCLE TEMP CONTROL SW TOGGLE SWITCHES 4 HPS HIGH PRESSURE SWITCH TD1 TD4 STAGE START TIMER COMP 3 LSV LIQUID LINE SOLENOID VALVE TD7 8 START TIMER LPS LOW PRESSURE SWITCH 2 ions BA2. VANT z M bie POS m oe t Units in Pits The top of the unit should be level with the top of the pit and side distance increased to Decorative Fences Fences must have 50 free area with 1 foot undercut a W minimum clearance and must not exceed the top of unit If these requirements are not met unit must If the top of the unit is not level with the top of pit be installed as indicated for Units in pits discharge cones or stacks must be used to raise discharge air to the top of the pit This is a minimum requirement STACK 3 BY OTHERS IF SUPPLIED FLOW AIR FLOW W Total width of the condensing unit or condenser Condensing Unit Rigging and Mounting Rigging holes are provided on all units Caution should be exercised when moving these units To prevent damage to the unit housing during rigging cables or chains used must be held apart by spacer bars The mounting platform or base should be level and located so as to permit free access of supply air Ground Mounting Concrete slab raised six inches above ground level provides a suitable base Raising the base above ground level provides some protection from ground water and wind blown matter Before tightening mounting bolts recheck level of unit The unit should in all cases be located with a clear space in all directions that is at a minimum equal to the height of the un
3. 14 Preventive Maintenance 15 Replacement Parts 15 Wiring Diagrams reete 16 18 Submittali arion co ee a 19 20 Service Record ecce ce itle de cio 21 General Safety Information 1 Installation and maintenance to be performed only by qualified personnel who are familiar with this type of equipment 2 Some units are pressurized with dry air or inert gas All units must be evacuated before charging the system with refrigerant 3 sure that all field wiring conforms to the requirements of the equipment and all applicable national and local codes 4 Avoid contact with sharp edges and coil surfaces They are a potential injury hazard 5 Make sure all power sources are disconnected before any Service work is done on units WARNING Refrigerant can be harmful if it is inhaled Refrigerant must be used and recovered responsibly Failure to follow this warning may result in personal injury or death Inspection Responsibility should be assigned to a dependable individual at the job site to receive material Each shipment should be carefully checked against the bill of lading The shipping receipt should not be signed until all items listed on the bill of lading have been accounted Check carefully for concealed damage Any shortage or damages should be reported to the d
4. AUXILIARY CONTACTS PUMPDOWN SWITCH CRANKCASE HEATERS BIR RELAYS 1 7 CIRCUIT BREAKERS SOU STATE MODULE M8 M6 M4 M2 1 FUSE CLASS CC w 30 MIN TIME DELAY I FAN CYCLE TEMP CONTROL SW TOGGLE SWITCHES 4 HIGH PRESSURE SWITCH 1 4 STAGE START TIMER Lt COMP 3 LIQUID LINE SOLENOID VALVE START TIMER 2 r3 LPS LOW PRESSURE SWITCH 2 BACUS9D2CHPQ To SHEET 2 17 Control Circuit Wiring Diagram for BACU51 and BACU59 GREEN CND 10 A 51 2 120V 1 60 HZ FROM SHEET 1 B NO WIRE COLORS B BLACK R RED W WHITE BL BLUE B YELLOW BR BROWN MJ MJ ADJUSTABLE MJ MX TOS 119 oy OPERATING ADJUSTABLE MJ CONTROLS PDS2 P BL124 106 LSV2 03 iij e Mn RET p OPERATING ADJUSTABLE MJ CONTROLS MJ PDS3 107 3 LSv3 01 1130 1725 vos ee quer Hm OPERATING ADJUSTABLE CONTROLS MJ 8614254 TDB Lsv4 ee cis Qp 1 OPERATING ADJUSTABLE CONTROLS MJ _ _ _ _ _ _ _ _ _ AARM W146 CIRCUIT 71 ce MJ 0 _ MARM 0 CIRCUIT 2 e LLL 152 CIRCUIT 3 MJ ODER ALARM __ 155 CIRCUIT 4 18 Submittal 55 60 NOTE COMPRESORS ARRANGED LEFT TO RIGHT LOOKING
5. IIIS VESTE pea 027 0189 00 Y Ambient Fan Cycle Control This is an automatic winter control method which will maintain a condensing pressure within reasonable limits by cycling fan motors in response to outside air temperature The thermostat s should be field adjusted to shut off the fan when the condensing temperature is reduced to approximately 90 F Table 2 on page 5 lists approximate settings for several system T D s These settings are approximate as they do not take into account variations in load CAUTION Under no circumstance should all condenser motors be allowed to cycle off on one control At least one motor shall be wired to operate at all times Under most circumstances the condenser motor nearest the inlet header should remain on whenever the compressor is operating Condensing Unit Accessories Suction Filters Driers Sight Glasses There are two types of suction and liquid filter driers used on Heatcraft Refrigeration Products units Replaceable core and or sealed units are used dependent upon the option package ordered Suction filters regardless of type are always installed upstream of the compressor suction service valve and any accumulators or other options that may be installed Suction filters are equipped with Schrader type access valves to allow field measurement of pressure drop across the device This allows plugged filters and elem
6. AVAILABLE AS SPECIAL ORDER SOUND ATTENUATION KIT ABBREVIATIONS FLA FULL LOAD AMPS HP HORSEPOWER LRA LOCKED ROTOR AMPS MCA MINIMUM CIRCUIT AMPACITY MOPD MAX UVERCURRENT PROTECTION DEVICE RLA RATED LOAD AMPS DESCRIPTION HB REVISED OPTIONS LIST 12 02 02 REVISED UNIT MODEL NUMBER 05 01 03 HB MOVED SOUND ATTENUATION KIT SP L ORDER 05 19 03 HB ADDED MODEL BACUS9D2CHEQ INFORMATION 15 ADDED COMPRESSOR LOCATION NOTES amp 09 19 03 CORRECTED 2 12 RLA ALL DIMENSIONS SHOWN ARE FLECTRICAL PRELIMINARY AND SUBJECT TO CHANGE CHARACTERISTICS COMPRESSOR COMPRESSOR pels R COMPRESSOR CONDENSER FANS LY NUMBER ZR19M3 MODEL NO LRA Se 208 3 60 2 ZR19M3 208 3 60 55 2 ZR19M3 218 250 208 3 60 55 2 ESTIMATED SHIPPING WEIGHT IBACUS9D2CHPQ IBACUS9D2CHER 6500 LBS HEATCRAFT SPECIFICATION SHEET REFRIGERATION PRODUCTS DIVISION STONE MOUNTAIN GEORGIA _ U S A BACUS9D2CH PQ EQ THIS DOCUMENT CONTAINS MATERIAL AND OR INFORMATION WHICH IS THE PROPERTY HEATCRAFT INC AND IS SUPPLIED ONLY ON A PROPRIETY BASIS TRANSMITTAL SHALL MADE ANY PERSON FIRM OR CORPORATION WITHOUT PRIOR WRIT TEN APPROVAL DRAWN DATE MLD 6 22 99 APPRDVED DATE M
7. COMPRESSOR COMPRESSOR POWER COMPRESSOR CONDENSER FANS NUMBER MODEL NU SUPPLY R LRA TY HP CEAD FLA 2 MCA LA zom 55 2 425 UNIT MOPD 471 350 8 4 ZRI6M3__ 208 3 60 47 1 350 1 7 _ 20873760 38 6 278 ESTIMATED SHIPPING WEIGHT MODEL BACUS1D2CHPQ BACUS1D2CHEQ 6500 LBS CRAFT REFRIGERATION PRODUCTS DIVISION STONE MOUNTAIN GEORGIA U S A THIS DOCUMENT CONTAINS MATERIAL AND OR INFORMATION WHICH IS THE BACUSID2CHPQ AND EQ FOOD LION APBI4467 CORPORATION WITHOUT PRIOR WRIT TEN APPROVAL 19 Submittal NOTE COMPRESORS ARRANGED LEFT TO RIGHT LOOKING INTO COMPRESSOR CABINET ZR12 2819 2819 2819 ZR12 8 ZRI9 USE LEFT HAND CONDENSER ZR19 ZR19 USE RIGHT HAND CONDENSER 138 X L75 DIA 2 PLACES 55 60 10 13 FRAME 2 go DIA 6 62 8 44 4 00 87 07 COMPRESSOR 5 LEFT TO RIGHT 1 2 3 OPTIONS SUPERHOSE CRANKCASE HEATER REPL CORE LIQUID DRIER REPL CORE SUCTION FILTER FAN CYCLE AMBIENT PHASE MONITOR 115V CONTROL TRANSFOMER COMPRESSER DRIP PAN P VERSION PROKOTE COIL WITH SUBCOOL CIRCUIT E VERSION ELECTRO FIN COIL WITH SUBCOOL CIRCUIT C VERSION COPPER FIN COIL WITH SUBCOOL CIRCUIT COMPESSER CIRCUIT BREAKER CONDENSER FAN CIRCUIT BREAKER HIGH PRESSURE CONTROL MANUAL RESET HIGH PRESSURE ALARM OUTPUTS 540 RPM FAN MOTORS
8. FL AC Scroll Refrigeration Systems Part No 25006901 H IM FL1A Installation and Operation Manual December 2004 Table of Contents General Safety Information 2 ISPS CUOM EE 2 Warranty 2 Air Cooled Condensing Unit and Condenser Space and Location 5 Cete terni pe eren itte tek nga iR cad 3 Condensing Unit Rigging and Mounting 4 Ambient Fan Cycle Control 4 Condensing Unit Accessories 5 Suction Filters Driers Sight 5 5 5 Refrigerant Oils irte ttti dp PEE 6 Phase Loss MONOT ot tete cerent 7 Recommended Refrigerant Piping Practices 7 Refrigeration Pipe Supports 7 SUCHOM LINES eke ates 8 Suction Line Risers sess 8 L iquid Lines tener rege Ene e vb 8 Evacuation and Leak 11 Refrigerant Charging 12 Field WING 12 Check Out and Start 12 Operational Check 13 System Balancing Compressor Superheat 13 System Troubleshooting Guide
9. 22 R 404A R 507 R 134a Minimum Cut In Cut Out Cut In Temp F PSI PSI PSI Cut Out Cut In Cut Out PSI PSI PSI Minimum ambient or box temperature anticipated Hi pressure control setting R 22 360 PSI R 404A R 507 400 PSI R 134a 225 PSI Table 2 Thermostat Settings Models 2 fan units 4 fan units 3 fan units 6 fan units 8 fan units NOTE Cycle pairs of fans on double wide units CAUTION Fans closest to the headers should not be cycled on standard temperature or pressure controls Dramatic temperature and pressure changes at the headers as a result of fan action can result in possible tube failure Fan motors are designed for continuous duty operation Fan cycling controls should be adjusted to maintain a minimum of 5 minutes on and 5 minutes off Short cycling of fans may result in a premature failure of motor and or fan blade Compressors operating below 10 F SST must have air flowing over the compressor at all times when the compressor is running Refrigeration Oils With the changes that have taken place in our industry due to the CFC issue we have reevaluated our lubricants to ensure compatibility with the new HFC refrigerants and HCFC interim blends offered by several chemical producers As a secondary criteria it is also desirable that any new lubricant be compatible with the traditional refrigerants suc
10. 3 Worn compressor 3 Replace 4 Scroll compressor rotation reversed 4 Rewire for phase change High discharge pressure 1 Non condensables in system 1 Remove the non condensables 2 System overcharges with refrigerant 2 Remove excess 3 Discharge shutoff valve partially closed 3 Open valve 4 Fan not running 4 Check electrical circuit 5 Head pressure control setting 5 Adjust 6 Dirty condenser coil 6 Clean Low discharge pressure 1 Faulty condenser temperature regulation 1 Check condenser control operation 2 Suction shutoff valve partially closed 2 Open valve 3 Insufficient refrigerant in system 3 Check for leaks Repair and add charge 4 Low suction pressure 4 See corrective steps for low suction pressure 5 Variable head pressure valve 5 Check valve setting High suction pressure 1 Excessive load 1 Reduce load or add additional equipment 2 Expansion valve overfeeding 2 Check remote bulb Regulate superheat Low suction pressure 1 Lack of refrigerant 1 Check for leaks Repair and add charge 2 Evaporator dirty or iced 2 Clean 3 Clogged liquid line filter drier 3 Replace cartridge s 4 Clogged suction line or compressor 4 Clean strainers suction gas strainers 5 Expansion valve malfunctioning 5 Check and reset for proper superheat 6 Condensing temperature too low 6 Check means for regulating condensing temperature 7 mproper TXV 7 Check for proper sizing Little or
11. 8 every 9 to 10 feet 2 When changing directions in a run of tubing no corner should be left unsupported Supports should be placed a maximum of 2 feet in each direction from the corner 3 Piping attached to a vibrating object such as a compressor or compressor base must be supported in such a manner that will not restrict the movement of the vibrating object Rigid mounting will fatigue the copper tubing 4 Do use short radius ells Short radius elbows have points of excessive stress concentration and are subject to breakage at these points 5 Thoroughly inspect all piping after the equipment is in operation and add supports wherever line vibration is significantly greater than most of the other piping Extra supports are relatively inexpensive as compared to refrigerant loss Figure 4 Example of Pipe Support Figure 5 Condensing Unit Compressor to Wall Support Factory Clamp Clamp Wall Compressar Incorrect Clamp Here 10 x Pipe Factory Diameters Clamp Correct Suction Lines NOTE If the suction line must rise to a point higher than the suction connection on the evaporator a suction line trap at the outlet of the evaporator must be provided Horizontal suction lines should slope away from the evaporator toward the compressor at the rate of 1 4 inch per 10 feet for good oil return When multiple evaporators are connected in series using a common suction line the b
12. 2 When initially charging a system that is in a vacuum liquid refrigerant can be added directly into the receiver tank 3 Check serial data tag attached to the unit for refrigerant capacity System refrigerant capacity is 90 of receiver capacity Do not add more refrigerant than the data tag indicates Weigh the refrigerant drum before charging so an accurate record can be kept of the weight of refrigerant put in the system 4 Start the system and finish charging until the sight glass indicates a full charge and the proper amount has been weighed in If the refrigerant must be added to the system through the suction side of the compressor charge in vapor form only Liquid charging must be done in the high side only or with liquid metering devices to protect the compressor Field Wiring WARNING All wiring must be done in accordance with applicable codes and local ordinances The field wiring should enter the areas as provided on the unit The wiring diagram for each unit is located on the inside of the electrical panel door All field wiring should be done in a profes sional manner and in accordance with all governing codes Before operating unit double check all wiring connections including the factory terminals Factory connections can vibrate loose during shipment 1 The nameplate on the unit is marked with the electrical characteristic for wiring the unit 2 Consult the wiring diagram in the unit cooler and in the co
13. CUS1D2CHPQ FACTORY WIRING FIELD WIRING TO SHEET2 16 Wiring Diagram for BACUB9D2CHPQ USE COPPER CONDUCTORS ONLY MINIMUM WIRE 18 AWG UNLESS OTHERWISE SPECIFIED FACTORY WIRING FIELD WIRING DISCONNECT BY OTHERS 208V 3j 60HZ POWER SUPPLY ard 999 0 nbl _ lt lt AWG Fl TRANSFORMER cup I4AWG 15A Ir 1 4 awe AM DM 3 4 KO 5 d 15 15 2M 14 AWG 14AWG 14AWG py 14 AWG 14AWG 4 14 AWG cei 70A 90A on 90 5 T6 0 9 10 xi2 25A 25A 25A 25A 25A 25A 25A 25A q 4 6awG 6 AWG 4 50 75 75 M1 M3 M5 M7 M2 M4 M6 COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3 COMPRESSOR 4 2612 2819 2819 7819 ALL COMPRESSORS THERMALLY PROTECTED SEE COMPRESSOR ELECTRIC BOK LEGEND COVERS FOR PROPER CONNECTION 1 4 COMPRESSOR CONTACTORS CONDENSER FANS TP ELECTRICAL 5 12 CONDENSER FAN CONTACTORS PHASE LINE MONITOR LA ENTRANCE 1 1 4 1
14. INTO COMPRESSOR CABINET ZR12 ZR19 ZR16 ZRI6 ZR12 8 ZRI9 USE LEFT HAND CONDENSER 2 16 8 ZRI6 USE RIGHT HAND CONDENSER 138 X 1 75 DIA 2 PLACES 1 57 COMPRESSOR S LEFT TO RIGHT 1 2 3 4 OPTIONS SUPERHOSE CRANKCASE HEATER REPL CORE LIQUID DRIER REPL CORE SUCTION FILTER FAN CYCLE AMBIENT PHASE MONITOR 115V CONTROL TRANSFOMER COMPRESSER DRIP PAN P VERSION PROKOTE COIL WITH SUBCOOL CIRCUIT E VERSION ELECTRO FIN COIL WITH SUBCDUL CIRCUIT C VERSION CUPPER FIN COIL WITH SUBCDUL CIRCUIT COMPESSER CIRCUIT BREAKER CONDENSER FAN CIRCUIT BREAKER HIGH PRESSURE CONTROL MANUAL RESET HIGH PRESSURE ALARM OUTPUTS 540 RPM FAN MOTORS AVAILABLE AS SPECIAL ORDER SOUND ATTENUATION KIT ABBREVIATIONS FLA FULL LOAD AMPS HP HORSEPOWER LRA LOCKED ROTOR AMPS MCA MINIMUM CIRCUIT AMPACITY MOPD MAX QVERCURRENT PROTECTION DEVICE RLA RATED LUAD AMPS Rev pare DESCRIPTION 9 16 02 HB REVISED OPTIONS LIST 12 02 02 HB REVISED UNIT MODEL NUMBER 02 26 03 HB REVISED COMPRESSOR MODELS 8 MCA 05 01 03 HB MOVED SOUND ATTENUATION KIT TO SP L ORDER 05 19 03 m ADDED MODEL BACUSID2CHEQ INFORMATION ADDED COMPRESSOR LOCATION NOTES 8 CORRECTED 2 12 RLA amp UNIT MCA 15 00 3 00 DIA HOLE ALL DIMENSIONS SHOWN ARE PRELIMINARY AND SUBJECT CHANGE 281 ELECTRICAL CHARACTERISTICS
15. LD 6 22 99 FOOD LION APB14480 rev E 20 Service Record A permanent data sheet should be prepared on each If another firm is to handle service and maintenance additional refrigeration system atan installation with a copy forthe owner copies should be prepared as necessary and the original for the installing contractor s files System Reference Data The following information should be filled out and signed by Refrigeration Installation Contractor at time of start up Date System Installed Installer and Address Condensing Unit Unit Model Unit Serial Compressor Model Compressor Model Compressor Serial 7 Compressor Serial 7 Electrical Volts Phase Voltage at Compressor L1 L2 Amperage at Compressor L1 L2 L3 21 Notes 22 Notes 23 Since product improvement is a continuing effort we reserve the right to make changes in specifications without notice Visit us online at www heatcraftrpd com REFRIGERATION LLC 2175 West Park PLace Bourevanp STONE Mountain GA 30087 USA 770 465 5600 Fax 770 465 5990 www HEATCRAFTRPD COM HEATCRAFT
16. both the low and high side evacuation valves with copper tube or high vacuum hoses 1 4 ID minimum If the compressor has service valves they should remain closed A deep vacuum gauge capable of registering pressure in microns should be attached to the system for pressure readings A shut off valve between the gauge connection and vacuum pump should be provided to allow the system pressure to be checked after evacuation Do not turn off vacuum pump when connected to an evacuated system before closing shut off valve The vacuum pump should be operated until a pressure of 1 500 microns absolute pressure is reached at which time the vacuum should be broken with the refrigerant to be used in the System through a drier until the system pressure rises above 0 psig NOTE Refrigerant used during evacuation cannot be vented Reclaim all used refrigerant EPA regulations are constantly being updated to ensure your procedure follows correct regulations Repeat this operation a second time Open the compressor service valves and evacuate the entire System to 500 microns absolute pressure Raise the pressure to 2 psig with the refrigerant and remove the vacuum pump 11 Refrigerant Charging Instructions 1 Install a liquid line drier in the refrigerant supply line between the service gauge and the liquid service port of the receiver This extra drier will insure that all refrigerant supplied to the system is clean and dry
17. cant s protective additive Oil Level During Copeland s testing of Polyol ester oil it was found that this lubricant exhibits a greater tendency to introduce oil into the cylinder during flooded start conditions If allowed to continue this condition will cause mechanical failure of the compressor crankcase heater is required with condensing units and it must be turned on several hours before start up Oil level must not exceed 1 4 sight glass Figure 3 Hygroscopicity GEF 50 Relative Humedity Mainture Content pam by Weight 180 Time Interims Traditional Refrigerants R401A R401B R402A Refrigeration Oils a 22 66 80 HFC s HFC 134a R404A R507 ICI Virginia KMP EMKARATE RL 32CF SUUS 3GS Texaco WF32 P NOT Calumet RO15 Witco P ACCEPTABLE Sontex 200 LT White Oil BR amp Scroll Only Witco LP 200 NOT ACCEPTABLE P Preferred Lubricant Choice A Acceptable Alternative M Mixture of Mineral Oil and Alkyl Benzene AB with minimum 50 AB Reprinted with permission from Copeland Mineral Oils The BR and Scroll compressors use Sontex 200 a white oil This oil is not suitable for low temperature applications nor is it available through the normal refrigeration wholesalers For field top off the use of 3GS or equivalent Zerol 200TD is permissible as long as at least 50 of the total oil charge rema
18. ctical Copeland mandates a minimum superheat of 20 F at the compressor Heatcraft Refrigeration Products recommends that the superheat at the compressor be between 30 F and 45 F If adjustments to the suction superheat need to be made the expansion valve at the evaporator should be adjusted 13 Table 7 System Troubleshooting Chart POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS Compressor will not run 1 Main switch open 1 Close switch 2 Fuse blown 2 Check electrical circuits and motor winding for shorts or grounds Investigate for possible overloading Replace fuse after fault is corrected 3 Thermal overloads tripped 3 Overloads are automatically reset Check unit closely when unit comes back on line 4 Defective contactor or coil 4 Repair or replace 5 System shut down by safety devices 5 Determine type and cause of shutdown and correct it before resetting safety switch 6 No cooling required 6 None Wait until calls for cooling 7 Liquid line solenoid will not open 7 Repair or replace coil 8 Motor electrical trouble 8 Check motor for open windings short circuit or burn out 9 Loose wiring 9 Check all wire junctions Tighten all terminal screws 10 Phase loss monitor inoperative 10 Refer to page 18 Compressor noisy or vibrating 1 Flooding of refrigerant into crankcase 1 Check setting of expansion valves 2 Improper piping support on suction or 2 Relocate add or remove hangers liquid line
19. d for repairs made by Buyer except by prior written authorization Every claim on account of breach of warranty shall be made to SELLER in writing within the warranty period specified above otherwise such claim shall be deemed waived Seller shall have no warranty obligation whatsoever if its products have been subjected to alteration misuse negligence free chemicals in system corrosive atmosphere accident or if operation is contrary to SELLER s or manufacturer s recommendations or if the serial number has been altered defaced or removed MOTOR COMPRESSORS Motor compressors furnished by SELLER are subject to the standard warranty terms set forth above except that motor compressor replacements or exchanges shall be made through the nearest authorized wholesaler of the motor compressor manufacturer not at SELLER s factory and no freight shall be allowed for transportation of the motor compressor to and from the wholesaler The replacement motor compressor shall be identical to the model of the motor compressor being replaced Additional charges which may be incurred throughout the substitution of other than identical replacements are not covered by this warranty 2 2004 Heatcraft Refrigeration Products LLC An optional nonassignable four 4 year extended compressor warranty may be purchased within the boundaries of the United Sates of America its territories and possessions and Canada With this extended compresso
20. ederal Trade Commission Improvement Act SELLER makes no warranty of any kind express or implied to consumers except as specifically set forth above and on the face hereof The following conditions should be adhered to when installing this unit to maintain the manufacturers warranty a lt gt System piping must be in accordance with good refrigeration practices b Inert gas must be charged into the piping during brazing c power supply to the unit must meet the following conditions A Three phase voltages must be 1096 of nameplate ratings Single phase must be within 10 or 596 of nameplate ratings B Phase imbalance cannot exceed 2 d All control and safety switch circuits must be properly connected according to the wiring diagram e factory installed wiring must not be changed without written factory approval f All equipment is installed in accordance with Heatcraft specified minimum clearances Space and Location Requirements for Air Cooled Condensing Units and Remote Condensers The most important consideration which must be taken into account Another consideration which must be taken is that the unit should when deciding upon the location of air cooled equipment is the be mounted away from noise sensitive spaces and must have provision for a supply of ambient air to the condenser and removal adequate support to avoid vibration and noise transmission into the of heated air from the condensing un
21. elivering carrier Damaged material becomes the delivering carrier s responsibility and should not be returned to the manufacturer unless prior approval is given to do so When uncrating care should be taken to prevent damage Heavy equipment should be left on its shipping base until it has been moved to the final location Check the serial tag information with invoice Report any discrepancies to your Heatcraft Refrigeration Products Sales Representative Warranty Statement Seller warrants to its direct purchasers that products including Service Parts manufactured by SELLER shall be of a merchantable quality free of defects in material or workmanship under normal use and service for a period of one 1 year from date of original installation or eighteen 18 months from date of shipment by SELLER whichever first occurs Any product covered by this order found to Seller s satisfaction to be defective upon examination at Seller s factory will at SELLER s option be repaired or replaced and returned to Buyer via lowest common carrier or SELLER may at its option grant Buyer a credit for the purchase price of the defective article Upon return of a defective product to SELLER s plant freight prepaid by Buyer correction of such defect by repair or replacement and return freight via lowest common carrier shall constitute full performance by SELLER of its obligations hereunder SELLER shall have no liability for expenses incurre
22. ents to be identified very quickly and easily so they can be replaced when the pressure drop is excessive Refer to the specific manufacturers recommendation on servicing these units by make and model Liquid filter driers regardless of type are always installed downstream of the receiver outlet service valve and up stream of the liquid line solenoid valve if supplied Liquid line driers may or may not have an access valve dependent on the size and application The basic servicing of these units is similar to suction filters Liquid line driers should be replaced whenever there is evidence of excessive pressure drop across the filter or the system becomes contaminated due to system leaks compressor burnouts acid formation or moisture accumulation as indicated by the liquid line sight glass The sight glass is installed in the main liquid line assembly downstream from the receiver outlet service valve and immediately after the liquid line drier The sight glass is designed to give a visual indication of moisture content in the system Generally it requires no field service However in cases of extreme acid formation in a system after a compressor burnout the acid may damage the sensing element or etch the glass This would require that the sight glass be replaced along with the liquid line drier after any compressor motor burnout Table 1 Recommended Low Pressure Control Settings for Outdoor Air Cooled Condensing Units R
23. erant i Do not leave unit unattended until the system has reached normal operating conditions and the oil charge has been properly adjusted to maintain the oil level at the center of the sight glass CAUTION Extreme care must be taken in starting compressors for the first time after system charging At this time all of the oil and most of the refrigerant might be in the compressor creating a condition which could cause compressor damage due to slugging Activating the crankcase heater for 24 hours prior to start up is required If no crankcase heater is present then directing a 500 watt heat lamp or other safe heat source on the lower shell of the compressor for approximately thirty minutes will be beneficial in eliminating this condition which might never reoccur WARNING Scroll compressor is directional dependent If noisy change phase of input wiring Operational Check Out After the system has been charged and has operated for at least two hours at normal operating conditions without any indication of malfunction it should be allowed to operate overnight on automatic controls Then a thorough recheck of the entire system operation should be made as follows a Check compressor discharge and suction pressures If not within system design limits determine why and take corrective action b Check liquid line sight glass and expansion valve operation If there are indications that more refrigerant is required leak
24. h as CFC 12 HCFC 22 or R502 This backward compatibility has been achieved with the introduction of the Polyol ester lubricants Table 3 below summarizes which oils lubricants are approved for use in Copeland compressors Polyol Ester Lubricants Hygroscopicity Ester lubricants POE have the characteristic of quickly absorbing moisture from the ambient surroundings This is shown graphically in Figure 3 where it can be seen that such lubricants absorb moisture faster and in greater quantity than conventional mineral oils Since moisture levels greater than 100 ppm will results in system corrosion and ultimate failure it is imperative that compressors components containers and the entire system be kept sealed as much as possible Lubricants will be packaged in specially designed sealed containers After opening all the lubricant in a container should be used at once since it will readily absorb moisture if left exposed to the ambient Any unused lubricant should be properly disposed of Similarly work on systems and compressors must be carried out with the open time as short as possible Leaving the system or compressor open during breaks or overnight MUST BE AVOIDED Table 3 Refrigeration Oils Mobil EAL ARCTIC 22 CC Color As received the POE lubricant will be clear or straw colored After use it may acquire a darker color This does not indicate a problem as the darker color merely reflects the activity of the lubri
25. ins Sontex 200 Suniso 3GS Texaco WF32 and Calumet R015 yellow oils are available through normal refrigeration wholesalers These oils are compatible if mixed and can be used on both high and low temperature systems Polyol Ester Lubricants The Mobil EAL ARCTIC 22 CC is the preferred Polyol ester due to unique additives included in this lubricant ICI Emkarate RL 328 is an acceptable Polyol ester lubricant approved for use when Mobil is not available These POE s must be used if HFC refrigerants are used in the system They are also acceptable for use with any 6 of the traditional refrigerants or interim blends and are compatible with mineral oils They can therefore be mixed with mineral oils when used in systems with CFC or HCFC refrigerants These lubricants are compatible with one another and can be mixed Alkyl Benzenes Zerol 200TD is an alkyl benzene AB lubricant Copeland recommends this lubricant for use as a mixture with mineral oil MO when using the interim blends such as R 401A R 401B and R 402A MP39 MP66 and HP80 A minimum of 50 AB is required in these mixtures to assure proper oil return Shell MS 2212 is a 70 30 mixture of AB MO If this lubricant is used in a retrofit situation virtually all of the existing MO must be drained prior to refilling with the MS 2212 to assure a minimum 5096 AB content Phase Loss Monitor The combination phase sequence and loss monitor relay protects the system against pha
26. it above the mounting surface A condensing unit mounted in a corner formed by two walls may result in discharge air recirculation with resulting loss of capacity Roof Mounting Due to the weight of the units a structural analysis by a qualified engineer may be required before mounting Roof mounted units should be installed level on steel channels or an I beam frame capable of supporting the weight of the unit Vibration absorbing pads or springs should be installed between the condensing unit legs or frame and the roof mounting assembly Access Provide adequate space at the compressor end of the unit for servicing Provide adequate space on the connection side to permit service of components Spring Mounted Compressor Compressors are secured rigidly to make sure there is no transit damage Before operating the unit it is necessary to follow these steps a Remove the upper nuts and washers b Discard the shipping spacers Install the neoprene spacers Spacers located in the electrical panel or tied to compressor d Replace the upper mounting nuts and washers e Allow 1 16 inch space between the mounting nut washer and the neoprene spacer Rigid Mounted Compressor Some products use rigid mounted compressors Check the compressor mounting bolts to insure they have not vibrated loose during shipment Figure 2 Solid Mount for Mobile or Deep Sump Application Washer 102 0008 13 Compresso Mounting Foot
27. it or remote condenser area building Units should be mounted over corridors utility areas rest Where this essential requirement is not adhered to it will result in rooms and other auxiliary areas where high levels of sound are not higher head pressures which cause poor operation and potential an important factor Sound and structural consultants should be failure of equipment Units must not be located in the vicinity of retained for recommendations steam hot air or fume exhausts Corrosive atmospheres require custom designed condensers Figure 1 Space and Location Requirements for Condensing Units and Remote Condensers Walls or Obstructions The unit should be located so that air may circulate freely and not be recirculated For proper air flow and access all sides of the unit should be a minimum of W away from any wall or obstruction It is preferred that this distance Multiple Units For units placed side by side the minimum distance between units is the width of the largest unit If units are placed end to end the minimum distance between units is 4 feet be increased whenever possible Care should be taken to see that ample room is left for maintenance work through access doors and panels Overhead obstructions are not permitted When the unit is in an area where it is enclosed by three walls the unit must be installed as indicated for units in a pit AIR FLOW AIR FLOW AIR FLOW E tm AA IIN
28. ndensing unit for proper connections 3 For air cooled condensers due to multiple low amp motors we recommend using time delay fuse protection instead of circuit breakers 12 Check Out and Start Up After the installation has been completed the following points should be covered before the system is placed in operation a Check all electrical and refrigerant connections Be sure they are all tight b Check high and low pressure controls pressure regulating valves oil pressure safety controls and all other safety controls and adjust if necessary c Check the room thermostat for normal operation and adjust d Wiring diagrams instruction bulletins etc attached to the condensing units should be read and filed for future reference e All fan motors on air cooled condensers evaporators etc should be checked for proper rotation Fan motor mounts should be carefully checked for tightness and proper alignment f Electric and hot gas evaporator fan motors should be temporarily wired for continuous operation until the room temperature has stabilized g Observe system pressures during charging and initial operation Do not add oil while the system is short of refrigerant unless oil level is dangerously low h Continue charging until system has sufficient refrigerant for proper operation Do not overcharge Remember that bubbles in a sight glass may be caused by a restriction as well as a shortage of refrig
29. ng units open to the atmosphere any longer than is absolutely necessary b Use only refrigeration grade copper tubing properly sealed against contamination c Suction lines should slope 1 4 per 10 feet towards the compressor d Suitable P type oil traps should be located at the base of each suction riser of four 4 feet or more to enhance oil return to the compressor e For desired method of superheat measurement a pressure tap should be installed in each evaporator suction line in the proximity of the expansion valve bulb f When brazing refrigerant lines an inert gas should be passed through the line at low pressure to prevent scaling and oxidation inside the tubing Dry nitrogen is preferred g Use only a suitable silver solder alloy on suction and liquid lines h Limit the soldering paste or flux to the minimum required to prevent contamination of the solder joint internally Flux only the male portion of the connection never the female After brazing remove excess flux i If isolation valves are installed at the evaporator full port ball valves should be used Refrigerant Pipe Support 1 Normally any straight run of tubing must be supported in at least two locations near each end of the run Long runs require additional supports The refrigerant lines should be supported and fastened properly As a guide 3 8 to 7 8 should be supported every 5 feet 1 1 8 and 1 3 8 every 7 feet and 1 5 8 and 2 1
30. no oil pressure 1 Clogged suction oil strainer 1 Clean 2 Excessive liquid in crankcase 2 Check crankcase heater Reset expansion valve for higher superheat Check liquid line solenoid valve operation 3 Low oil pressure safety switch defective 3 Replace 4 Worn oil pump 4 Replace 5 Oil pump reversing gear stuck in wrong 5 Reverse direction of compressor rotation position 6 Worn bearings 6 Replace compressor 7 Low oil level 7 Add oil and or through defrost 8 Loose fitting on oil lines 8 Check and tighten system 9 Pump housing gasket leaks 9 Replace gasket Compressor loses oil 1 Lack of refrigerant 1 Check for leaks and repair Add refrigerant 2 Excessive compression ring blowby 2 Replace compressor 3 Refrigerant flood back 3 Maintain proper superheat at compressor 4 Improper piping or traps 4 Correct piping Compressor thermal protector 1 Operating beyond design conditions 1 Add facilities so that conditions are within Switch open allowable limits 2 Discharge valve partially shut 2 Open valve 3 Blown valve plate gasket 3 Replace gasket 4 Dirty condenser coil 4 Clean coil 5 Overcharged system 5 Reduce charge Preventive Maintenance Air Cooled Condensing Units Quarterly 1 Visually inspect unit Look for signs of oil stains on interconnection piping condenser coil Pay close attention to areas around solder joints building penetrations and pi
31. pe clamps Check any suspect areas with an electronic leak detector Repair any leaks found and add refrigerant as needed Check condition of moisture indicator sightglass in the sight glass if so equipped Replace liquid line drier if there is indication of slight presence of moisture Replace refrigerant oil and drier if moisture concentration is indicated to be high Check moisture indicator sightglass for flash gas If found check entire system for refrigerant leaks and add refrigerant as needed after repairing any leaks Check compressor sightglass if equipped for proper oil level Check condition of condenser Look for accumulation of dirt and debris clean as required Check for unusual noise or vibration Take corrective action as required Inspect wiring for signs of wear or discoloration and repair if needed Check and tighten all flare connections Semi Annually 2 Repeat all quarterly inspection items 3 Clean condenser coil and blades Periodic cleaning be accomplished by using a brush pressurized water and a commercially available foam coil cleaner If foam cleaner is used it should not be an acid based cleaner Follow label directions for appropriate use Rinse until no residue remains 4 Check operation of condenser fans Check that each fan rotates freely and quietly Replace any fan motor that does not rotate smoothly or makes excessive noise Check all fan blade set screws and
32. r warranty replacements are administered by an authorized compressor distributor only Replacements within the first year of the warranty area available through the distributor the second through fifth years the purchaser must submit a proof of purchase of a compressor and supply it to Heatcraft Refrigeration Products Warranty Claims for reimbursement Seller makes no express warranties except as noted above All implied warranties are limited to the duration of the Express Warranty Liability for incidental and consequential damages is excluded The forgoing is in lieu of all other warranties express or implied notwithstanding the provisions of the uniform commercial code the Magnuson Moss Warranty Federal Trade Commission Improvement Act or any other statutory or common law federal or state SELLER makes no warranty express or implied of fitness for any particular purpose or of any nature whatsoever with respect to products manufactures or sold by seller hereunder except as specifically set forth above and on the face hereof It is expressly understood and agreed that SELLER shall not be liable to buyer or any customer of buyer for direct or indirect special incidental consequential or penal damages or for any expenses incurred by reason of the use or misuse by buyer or third parties of said products To the extent said products may be considered consumer products As defined in Sec 101 of the Magnuson Moss Warranty F
33. ranch suction lines must enter the top of the common suction line For dual or multiple evaporator systems the branch lines to each evaporator should be sized for the evaporator capacity The main common line should be sized for the total system capacity Suction lines that are outside of refrigerated space must be insulated See the Line Insulation section on page 11 for more information Suction Line Risers Prefabricated wrought copper traps are available or a trap can be made by using two street ells and one regular ell The suction trap must be the same size as the suction line For long vertical risers additional traps may be necessary Generally one trap is recommended for each length of pipe approximately 20 feet to insure proper oil movement See Figure 6 below for methods of constructing proper suction line P traps Figure 6 Suction P Traps INCORRECT REDUCE HERE Slope 1 4 per 10 ft toward compressor CORRECT Liquid Lines Liquid lines should be sized for a minimum pressure drop to prevent flashing Flashing in the liquid lines would create additional pressure drop and poor expansion valve operation If a system requires long liquid lines from the receiver to the evaporator or if the liquid has to rise vertically upward any distance the losses should be calculated to determine whether or not a heat exchanger is required The use of a suction to liquid heat exchanger may be
34. red operation There are no factory preset controls or valve adjustments System Balancing Compressor Superheat IMPORTANT In order to obtain the maximum capacity from a system and to ensure trouble free operation it is necessary to balance each and every system This is extremely important with any refrigeration system The critical value which must be checked is suction superheat Suction superheat should be checked at the compressor as follows 1 Measure the suction pressure at the suction service valve of the compressor and determine the saturation temperature corresponding to this pressure from a Temperature Pressure chart 2 Measure the suction temperature of the suction line about one foot back from the compressor using an accurate thermometer 3 Subtract the saturated temperature from the actual suction line temperature The difference is superheat Too low a suction superheat can result in liquid being returned to the compressor This will cause dilution of the oil and eventual failure of the bearings and rings or in the extreme case valve failure Too high a suction superheat will result in excessive discharge temperatures which cause a break down of the oil and results in piston ring wear piston and cylinder wall damage It should also be remembered that the system capacity decreases as the suction superheat increases For maximum System capacity suction superheat should be kept as low as is pra
35. riers until test results read normal Investigate source of high metal concentrations which normally are due to abnormal bearing wear Look for liquid refrigerant in the crankcase low oil pressure or low super heat as a possible source Replacement Parts Whenever possible replacement parts are to be obtained from a local wholesaler authorized to sell one of Heatcraft Refrigeration Products brands Replacement parts which are covered under the terms of the warranty statement on page 2 of this manual will be reimbursed for total part cost only The original invoice from the parts supplier must accompany all warranty claims for replacement part reimbursement Heatcraft Refrigeration Products reserves the right to adjust the compensation amount paid on any parts submitted for warranty reimbursement when a parts supplier s original invoice is not provided with a claim You may obtain information regarding local authorized wholesalers by calling the Heatcraft Refrigeration Products Replacement Parts Center at 1 800 686 7278 between the hours of 7 30 AM to 4 30 PM Central Time 15 Wiring Diagram for BACU51D2CHPQ USE COPPER CONDUCTORS ONLY MINIMUM WIRE 18 AWG UNLESS OTHERWISE SPECIFIED
36. se loss single phasing phase reversal improper sequence and low voltage brownout When phase sequence is correct and full line voltage is present on all three phases the relay is energized as the normal condition indicator light glows NOTE If compressor fails to operate and the normal condition indicator light on the phase monitor does not glow then the supplied electrical current is not in phase with the monitor This problem is easily corrected by the following steps 1 Turn power off at disconnect switch 2 Swap any two of the three power input wires 3 Turn power on Indicator light should glow and compressor should start 4 Observe motors for correct rotation Recommended Refrigerant Piping Practices The system as supplied by Heatcraft Refrigeration Products was thoroughly cleaned and dehydrated at the factory Foreign matter may enter the system by way of the evaporator to condensing unit piping Therefore care must be used during installation of the piping to prevent entrance of foreign matter Install all refrigeration system components in accordance with applicable local and national codes and in conformance with good practice required for the proper operation of the system The interconnecting pipe size is not necessarily the same size as the stub out on the condensing unit or the evaporator The following procedures should be followed a Do not leave dehydrated compressors or filter driers on condensi
37. systems for use with refrigerants These dyes mix with the lubricant and when exposed to an ultraviolet light fluoresce indicates the location of leaks Copeland has tested and approved the Rigid System Safe dye and found it to be compatible with the compressor materials in systems Leak Testing After all lines are connected the entire system must be leak tested The complete system should be pressurized to not more than 150 psig with refrigerant and dry nitrogen or dry CO The use of an electronic type leak detector is highly recommended because of its greater sensitivity to small leaks As a further check it is recommended that this pressure be held for a minimum of 12 hours and then rechecked For a satisfactory installation the system must be leak tight Line Insulation After the final leak test refrigerant lines exposed to high ambient conditions should be insulated to reduce heat pickup and prevent the formation of flash gas in the liquid lines Suction lines should be insulated with 3 4 wall Armstrong Armaflex or equal Liquid lines should be insulated with 1 2 inch wall insulation or better The insulation located in outdoor environments should be protected from UV exposure to prevent deterioration of insulating value Evacuation CAUTION Do not use the refrigeration compressor to evacuate the system Do not start the compressor while it is in a vacuum A good deep vacuum pump should be connected to
38. test all connections and system components and repair any leaks before adding refrigerant c Thermostatic expansion valves must be checked for proper superheat settings Feeler bulbs must be in positive contact with the suction line and should be insulated Valves set at high superheat will lower refrigeration capacity Low superheat promotes liquid slugging and compressor bearing washout d Using suitable instruments carefully check line voltage and amperage at the compressor terminals Voltage must be within 10 of that indicated on the condensing unit nameplate If high or low voltage is indicated notify the power company If amperage draw is excessive immediately determine the cause and take corrective action On three phase motor compressors check to see that a balanced load is drawn by each phase e The maximum approved settings for high pressure controls on Heatcraft air cooled condensing equipment is 400 psig On air cooled systems check as follows Disconnect the fan motors or block the condenser inlet air Watch high pressure gauge for cutout point Recheck all safety and operating controls for proper operation and adjust if necessary f Check winter head pressure controls for pressure setting g Check crankcase heater operation if used h Install instruction card and control system diagram for use of building manager or owner NOTE All adjustable controls and valves must be field adjusted to meet desi
39. tighten as required Check all fan blades for signs of cracks wear or stress Pay close attention to the hub and spider Replace blades as required Verify that all motors are mounted securely Lubricate motors if applicable Do not lubricate permanently sealed ball bearing motors 5 Inspect electrical wiring and components Verify that all electrical and ground connections are secure tighten as required Check condition of compressor and heater contactors Look for discoloration and pitting Replace as required Check operation and calibration of all timers relays pressure controls and safety controls Clean electrical cabinet Look for signs of moisture dirt debris insects and wildlife Take corrective action as required Verify operation of crankcase heater by measuring amp draw 6 Check refrigeration cycle Check suction discharge and net oil pressure readings If abnormal take appropriate action Check operation of demand cooling liquid injection or unloaders if so equipped Check pressure drop across all filters and driers Replace as required Verify that superheat at the compressor conforms to specification 30 F to 45 F Check pressure and safety control settings and verify proper operation Annually 7 In addition to quarterly and semiannual maintenance checks submit an oil sample for analysis Look for high concentrations of acid or moisture Change oil and d
40. tly it is of the utmost importance that proper system evacuation and leak detection procedures be employed Copeland recommends a minimum evacuation to 500 microns In addition a vacuum decay test is strongly recommended to assure there is not a large pressure differential between the system and vacuum pump Good evacuation processes include frequent vacuum pump oil changes and large diameter short hose connections to both high and low sides of the system preferably using bronze braided hose Leak detection can be carried out in the conventional manner If HCFC or CFC tracer gas is used care must be taken to completely remove all traces of the gas prior to introducing HFC s Electronic leak detectors are now available that will sense HFC s This is considered preferable since it removes the possibility of chlorine remaining in the system after leak testing with HCFC s and or CFC s There is a view that even small quantities of chlorine may act as a catalyst encouraging copper plating and or corrosion and should therefore be avoided WARNING HFC 134a has been shown to be combus tible at pressure as low as 5 5 psig at 350 F when mixed with air at concen trations more than 60 air by volume At lower temperature higher pressures are required to support combustion Therefore air should never be mixed with HFC 134a for leak detection Within the last several years manufacturers have developed fluorescent dye leak detection
41. used to subcool the liquid to prevent flashing This method of subcooling will normally provide no more than 20F subcooling on high pressure systems The amount of subcooling will depend on the design and size of the heat exchanger and on the operating suction and discharge pressures An additional benefit from the use of the suction to liquid type heat exchanger is that it can help raise the superheat in the suction line to prevent liquid return to the compressor via the suction line Generally heat exchangers are not recommended on R 22 low temperature systems However they have proved necessary on short well insulated suction line runs to provide superheat at the compressor Table 4 Pressure Loss of Liquid Refrigerants Liquid Line Risers Expressed in Pressure Drop PSIG and Subcooling Loss Liquid Line Rise in Feet 75 __ 1 29 30 ___ 100 Refrigerant 516 PSIG PSiG F PSic 5 F psic r Psic F PSiG F me ae 16 7 ves 47 vo 62 so as mom s 20 20 ss 122 voz as vo ssa zo on Based on 110 liquid temperature at bottom of riser Table 5 Equivalent Feet of Pipe Due to Valve and Fitting Friction Copper Tuber O D Type 17 Globe Valve Open 22 28 36 42 57 6 83 99 118 138 168 Angle Val
42. ve Open Ps 6 20 22 6 2 8 1 Tee Straight Through or Sweep Below 5 3 3 5 4 5 7 11 u se 9 90 Elbow or Reducing Tee Straight Through Table 6 Weight of Refrigerants in Copper Lines During Operation 10 Pounds per 100 lineal feet of type L tubing Line Size O D in Inches Refrigerant 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A 134a 22 R507 404A Suction Line at Suction Temperature RD uo Oi m o OIN 0 0 0 0 2 3 5 4 6 8 6 9 8 1 32 1 33 1 86 1 51 2 30 1 43 3 23 2 32 2 21 5 00 1 41 3 31 2 28 5 05 3 15 7 14 1 91 4 48 3 08 3 6 83 4 25 19 65 X 4 6 9 7 11 16 12 17 5 4 6 1 1 1 6 1 3 7 io o 1 3 4 3 5 7 5 8 11 10 16 3 17 8 9 6 2 8 7 9 2 4 9 po w o on 0 0 0 0 0 0 0 0 2 2 2 4 5 3 5 8 6 9 40 F 06 08 13 11 15 24 25 35 36 51 72 60 87 Evacuation and Leak Detection Due to the smaller molecule size of HFC s they will tend to leak more readily than CFC s Consequen
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