PRESSURE-TEMPERATURE CHART at Altitude - …

1 PSIGTEMPERATURE FLIGHT GREENLIGHT BLUECORALROSETEALWHITEREFRIGERANT - (SPORLAN CODE)22 (V)134a (J)401A (X)410A (Z)507 (P)717 (A)5*-56-30-32-74-67-424*-55-29-31-73-65 -413*-53-27-29-71-64-392*-52-25-27-70-62 -371*-50-24-26-68-60-360-48-22-24-67-59- 351-46-19-21-64-56-322-43-16-18-62-53-29 3-40-14-16-59-51-274-38-11-13-57-48-245- 35-9-11-55-46-226-33-6-8-53-44-207-31-4- 6-51-42-188-29-2-4-49-40-169-270-2-47-38 -1410-2520-45-36-1311-2342-44-34-1112-21 64-42-32-913-1986-40-31-814-1897-39-29-6 15-16119-37-28-516-151311-36-26-317-1314 12-34-24-218-121614-33-23019-101715-32-2 2120-91917-30-20221-72018-29-19422-62220 -28-17523-52321-27-16624-32423-25-15725- 22624-24-14926-12725-23-12102712826-22-1 1112822928-21-10122933129-20-9133043230- 19-8143153331-18-7153263432-17-616337353 4-16-4173493635-15-31835103736-14-219361 13837-13-12037123938-120213813403930-111 223914414031-102234015434132-93244217444 334-74254419464536-66274620484738-482948 22504939-210305024525041-112325226545243 1133354275545215355629574641636583059485 1838603260507193962346251821416435635392 2426636655411244368386656122545703967571 3274672416959152847744270601629487643726 2173149784573631832518046746419335285497 7682236559052807125395795558374284260100 5886773045621056089803347651106392823550 6711566948537526912068978839557112571999 0425774130731029344597613575104954661781 4077106974864801458010810050668215082111 1025268831558411310454708516086115106557 2871658811710857748917090119110597690175 9212111261779218093122114627994185951241 1664819519097126118668397195991281206784 9920010113012269861002051021311247088102 2101041331257289103220107136129759310623 0110140132789610924011314313580991112501 1614613983102114260119149142861041172751 2415314689108120290128157150931121243051 3116115496116127320135164158100120130335 1391681621031231343501421721661061271373 6514617516910913014038014917817311213314 3400153183178116137146420158187182120141 1504401621911861231451534601651941901271 4815748016919819413015216050017320219813 3155163* Inches mercury below one atmosphereOBTAIN SUCTION PRESSURE71 PSIG (at bulb)Temperaturehere reads52 40 12 SUPERHEATPOSSIBLE CAUSES 1.

2 Oversized valve 2. TEV seat leak 3. Low superheat adjustment 4. Bulb installation a. Poor thermal contact b. Warm location 5. Wrong thermostatic charge 6. Bad compressor low capacity 7. Moisture, dirt, wax 8. Incorrectly located external equalizerHigHSuction PreSSureLowSuPerHeatPOSSIBLE CAUSES 1. Low load a. Not enough air b. Dirty air filters c. Air too cold d. Coil icing 2. Poor air distribution 3. Poor refrigerant distribution 4. Improper compressor-evaporator balance 5. Evaporator oil logged 6. Flow from one TEV affecting another s bulb KCARCLowSuction PreSSureLowSuPerHeatPOSSIBLE CAUSES 1. Moisture, dirt, wax 2. Undersized valve 3. High superheat adjustment 4. Gas charge condensation 5. Dead thermostatic element charge 6. Wrong thermostatic charge 7. Evaporator pressure drop no external equalizer 8. External equalizer location 9. Restricted or capped external equalizer 10.

3 Low refrigerant charge11. Liquid line vapor a. Vertical lift b. High friction loss c. Long or small line d. Plugged drier or strainer12. Low pressure drop across valve a. Same as #11 above b. Undersized distributor nozzle or circuits c. Low condensing temperatureLowSuction PreSSureHigHSuPerHeatChanging Parts Might Be The First Reaction May not be necessary Does not always solve the problemSUPERHEAT ANDSUCTION pressure symptoms can provide the real causeMAKE A SYSTEMATIC ANALYSISB ased on the complaint and measurements takenPRESSURE-TEMPERATURE CHART at Altitude 5,000 feet above Sea LevelBUBBLE POINTDEW POINTPSIGTEMPERATURE FBLUELIME GREENMEDIUM BROWNLIME GREENORANGEREDDISH PURPLEREFRIGERANT - (SPORLAN CODE)438A (V)407A (V)407C (N)422D (V)404A (S)408A (S)5*-48-52-48-51-64-624*-46-50-47-50-63 -613*-44-49-45-48-61-592*-43-47-44-47-60 -571*-41-46-42-45-58-560-40-44-41-44-57- 541-37-41-38-41-54-512-34-39-35-38-51-49 3-32-36-33-36-49-464-29-34-30-33-46-445- 27-32-28-31-44-416-25-29-26-29-42-397-23 -27-24-27-40-378-21-25-22-25-38-359-19-2 4-20-23-36-3310-17-22-18-21-34-3111-15-2 0-16-19-32-2912-13-18-15-18-30-2713-12-1 7-13-16-28-2614-10-15-11-14-27-2415-9-13 -10-13-25-2216-7-12-8-11-24-2117-6-11-7- 10-22-1918-4-9-5-8-21-1819-3-8-4-7-19-16 20-1-6-3-5-18-15210-5-1-4-17-13221-40-3- 15-12233-21-1-14-11244-130-13-9255041-11 -8266152-10-7278263-9-6289375-8-52910586 -7-330116107-5-231127118-4-132138129-303 31491310-213415101411-123516111512033617 1216131437181317142538191418153639201519 1647402116201758422318211971044251923219 1246272125231014482823272412165030242826 1417523226302815195433273229172156352933 3119225836303532202460383236342225623930 3337352923276441313539373025286642333640 2938322630296843343742313933273131704535 3943324134293332724637403044334236302934 3374473841314635433731313535764939433347 3645383332373678504144344837464034333837 8051424535493847413534393985454838524150 4438374242904851414453474140454595514447 5044434848100544750534746515010556495255 4949531105952555852515611561545761545812 0645660635661125665962655863130686164686 1651357163677063681407365697265701457567 7174677215077697376697415579717578717616 0817377807378165837579827580170857781847 7821758779828679841808981848881861859083 8690838819092848892848919594868993869120 0968891958893205978993978995210999194989 1962201029498102949923010597101105971032 4010810010410810010625011110310611110310 9260114106109114106112275118110113118110 1162901221141171221141203051261171211261 1812432013012112512912112733513312412813 3125131350137128132136128134365140131135 1401321383801431341381431351414001481381 4214713914542015214214615114314944015614 6150155147153460159150154159150157480163 153157163154161500167157161166157164* Inches mercury below one atmosphereBUBBLE POINTBUBBLE POINTDEW POINTDEW POINTDEW POINTBUBBLE POINTBUBBLE POINTBUBBLE POINTBUBBLE POINTDEW POINTDEW POINTDEW POINT 2014 Sporlan Division, Parker Hannifin CorporationAPPROXIMATE pressure CONTROL SETTINGS at Altitude - 5,000 Feet above Sea LevelPressure - Pounds Per Square Inch GaugeAPPLICATIONTEMPERATURERANGE ( F)EVAPORATORTD ( F)REFRIGERANT22134a404A507 OutInOutInOutInOutInBeverage Cooler35 to 38154368203654855789 Floral CoolerProduce CoolerSmoked Meat Cooler32 to 35154064183352805584 Meat Reach ThruService DeliSeafoodMulti-Deck Fresh Meat26 to 29153456142845714774 Frozen Glass Door-10 to 0101226--17351938 Frozen Walk-InFrozen Ice Cream-30 to -2010213--619720 Frozen Food - Open TypePressure control settings assume a suction line pressure loss equivalent to 2 CAPACITY OF REFRIGERATION LINESTons of Refrigeration - 200 Feet Equivalent Pipe LengthTYPE LCOPPER InchesREFRIGERANTIRONPIPESIZEI nchesSCHEDULEREFRIGERANT22134a404A / 507717 (Ammonia)LiquidLineSuctionLineLiquidLine SuctionLineLiquidLineSuctionLineLiquidLi neSuctionLine20 F F F F 22, 134a, 404A, and 507 values are based on 100 F liquid temperature and the stated evaporator temperature.

4 refrigerant 717 (ammonia) values are based on 86 F liquid temperature and 20 F evaporator temperature. Both suction and liquid line values are based on a pressure drop equivalent to 1 F change in saturation temperature. For additional information on refrigerant line sizing, consult ASHRAE s Refrigeration Handbook or equipment CHART at Altitude 5,000 feet above Sea LevelBubble PointRefrigeration CycleDew PointLines of Constant TemperatureTo detemine superheat, use Dew Point values. To determine subcooling, use Bubble Point DIAGRAM BLENDSForm 1B-714 Download the FREE ChillMaster P-T CHART App at