8802174 OE Instructions - Mueller Dairy Farm Equipment
Contents
1. 8 Figure 6 Recorder Bulb Channel 8 Winne zu av Sue SI gt Bade eos dA Pa eh P S es 8 LO Test Running Cooler us tau PWR RE Eee peque rh RR ERA E ERS ee eee be 9 1 10 Test R nnimng Washing System sep 44444 Rau Gru 9 Figure 7 Wiring Diagram Single Unit 10 Figure 8 Wiring Diagram Dual Unit 11 Section 2 0 Operating Instructions First MIKINO e Sask ee Argel arava tar rte Etc Re 12 Table 1 Mueller Matic Water Consumption Table 12 2 2 Subsequent Milkings 13 2 3 JButteratSampling cse ko dae eee ede P E RR eee 13 2 4 ExtermalMeasunng Gauge e reps Oe EDT EERE eee Had 13 2 5 Emping Cooler si ict decd CHRIS REC zxeexs hm E ae bude eye eee eee 13 2 6 Washing Coole wos ad ele Me oe SER week bee eee ole eed us 14 Chart 1 36 Minute Time Cycle Chart 14 Section 3 0 General Maintenance Instructions Gool r Maintenianee da Maes ene SARA e De ee D cs ae ak od 15 3 2 Refrigerat2. OE Instructions Use large radius bends to avoid crimping tubing Minimum radius bends SSS for 7 s tube is 4 for tube is 6 and for tube is 3 1 Pre Insulated Refrigerant Tubing v 1 Refrigeration Unit Shelter lt lt 4 0650 i 1 Provide ample air flow with large mesh a Screens over vent openings Openings 1 should never be smaller than condenser T Effective August 31 1984 Reprint April 16 1999 1 7 Installing Optional Recording Thermometer Sensing Bulb 1 7 1 1 7 2 1373 Remove rubber grommet covering the raceway provided for recording thermometer sensing bulb at rear of cooler between conduit connector and refrigerant stubs see Figure 6 Insert sensing bulb into raceway and push bulb until it is felt to firmly seat at the end of raceway Mount and wire recording thermometer according to instructions provided Figure 6 Recorder Bulb Channel Raceway Bulb Bulb Stop 1 8 Wiring the System 1 81 1 8 2 Model OE Instructions In the Mueller Model OE system all internal control wiring on the control cabinet and cooler is complete It is only necessary to connect the control cabinet to a 230 60 1 or 200 50 1 separately fused power supply and to connect various components of the Model OE system to the control cabinet Select a main circuit breaker or fused disconnect
3. 1 1 2 1 2 1 2 1 3 1 2 1 4 1 2 1 5 1 2 1 6 Arrange all cap screws lock washers and spacer sleeves for easy access Remove agitator motor from shipping box Place agitator assembly inside cooler and insert end of agitator shaft up through round opening directly under agitator motor Slip neoprene agitator shaft seal and rubber coupling ring over end of agitator shaft Place the three motor sleeves over internally threaded studs on the cooler Carefully place agitator motor on spacer sleeves and install mounting bolts with small amount of anti seize lubricant on threads Place agitator shaft over motor shaft and insert coupling pin in hole slide coupling ring over coupling pin to hold it in place Agitator Motor Electrical Connections 1 2 2 1 1 2 2 2 1 2 2 3 1 2 2 4 1 2 2 5 1 2 2 6 1 2 2 7 Thread the five parts of cable fitment adapter with O ring installed grommet washer and nut onto 3 wire cable in the order shown in Figure 2 Cut wire to proper length Strip insulation and install wire terminals furnished in parts box Remove motor access plate feed the 3 wire cable through knock out in motor side and attach quick connect terminals to motor posts either wire to either post Secure ground wire under ground screw on motor housing Screw threaded adapter into motor housing Slide rubber grommet into adapter Slide washer into adapter 3 Effective August 31 1984 Reprint April
4. 31 1984 Reprint April 16 1999 4 3 Accumulator Heat Exchanger 4 3 1 4 3 2 20 3 The accumulator heat exchanger is a device that has both low side and high side functions Its function in the low side of the system is to collect liquid refrigerant between the evaporator and the compressor It is designed so that liquid refrigerant is collected and vaporized before it is returned to the compressor Oil is returned to the compressor through an orifice in the bottom of the suction J tube see Figure 12 Its function in the high side is to provide additional sub cooling of the high side liquid refrigerant between the condenser and the expansion valve This sub cooling occurs as the high side liquid travels through the liquid coil pancake coiD located in the bottom of the accumulator heat exchanger which during operation is exposed to cold low side liquid refrigerant This additional subcooling ensures that a solid column of liquid refrigerant enters the expansion valve for proper valve operation and it improves the performance by minimizing the amount of flash gas in the evaporator The heat exchange that occurs between the warm high side liquid passing through the pancake coil and the cold low side liquid that is exposed to the pancake coil serves to vaporize the low side liquid 4 4 Refrigerant Charge As a general indicator the following chart shows normal suction pressures at the Schraeder fitting on the suction line at the unit
5. If differential is more than 4 F inspect contact of bulb against cooler Recheck differential and replace temperature control if necessary Problem Compressor will not start no motor hum Tripped circuit breaker Disconnect switch open Open line circuit ORES 4 Problem Compressor will not start motor hums A This could be one of many things but most probably electrical Reset If it trips again check for line shorts Close switch Check wiring and fuses Check the Technical Data Section of the Sales Service Manual n Problem Compressor runs and stops intermittently before milk is cooled down A If compressor is starting and stopping and the refrigerant solenoid valve opening and closing the trouble is probably a defective temperature controller When solenoid valve opens or closes a definite click will be heard B Compressor cycling on overload due to high operating pressures Cut off point on low pressure switch set too high Defective low pressure switch Moisture in system mo mo Check temperature controller and replace if required Clean the condenser Make sure there is plenty of unrestricted air flow Set to cut off at 2 psig for R 12 or R 22 Check for adequate refrigerant charge Replace Replace drier Gf filter drier is in suction line add a drier to the liquid line There are many different things that can cause a com
6. Model OE Instructions Place Sealing Gasket Between Pre Formed Channel and Cooler 8 Structural Clearance with 3 4 Clearance Frost Line Varies Section A A 1 Effective August 31 1984 Reprint April 16 1999 1 1 6 Model OE Instructions Remove skids 1451 1 1 5 2 1 1 5 3 1 1 5 4 1 1 5 5 Raise one end of cooler by lifting on the end cross brace and remove the s self tapping screws from legs on that end of the cooler using a socket wrench Lower cooler and repeat the procedure on other end On larger coolers with more than four legs be sure to check all legs for screws Remove cross bracing members of the skid leaving only the two skids on which cooler rests Now raise one end of the cooler using a cradle in the shape of the cooler and pivot the skids away from the cooler Lower cooler and repeat procedure on other end Installing External Measuring Gauge optional feature 1 1 6 1 1 1 6 2 1 1 6 3 The pyrex gauge tube is shipped in place in the gauge tube channel Check upper channel adjuster fitting for tightness It should be hand tight Slide two hose clamps onto the shorter hose Slip one end of the hose over fitting at top of gauge tube and other end of hose over the wash return elbow on top of cooler Tighten clamps Slide two hose clamps onto the longer hose Slip end of the hose over the end of the q
7. and acid levels on bowls CAUTION Never mix chlorinated sanitizers or detergent with acid Be sure that there is no previous product residue in the bowl before adding acid 2 65 Move Selector switch on control cabinet to WASH position and turn Mueller Matic timer knob clockwise only to start automatic wash system The Mueller Matic will pre rinse wash rinse and acid rinse then turn off automatically Note During operation of the Mueller Matic the pump will run for 30 seconds after the drain valve is opened This is normal see Chart 1 Time Cycle Chart and serves to flush out small particles of sediment remaining in the cooler 266 Sanitizing should be done immediately before milking according to procedures outlined under Operating Instructions 267 If at any time the Mueller Matic does not operate properly consult the Mueller Matic Troubleshooting Chart Chart 1 36 Minute Time Cycle Chart 36 Minute Time Cycle Chart E On O Off Circuit D wwe ERE 15 inre 20 DD 35 Rinse Water See See See 2A Wash Water Rinse Acid S tf _ Sanitizer 6 Pump mune EEN ENS NENN 4A TM j Model OE Instructions 14 Effective August 31 1984 Reprint April 16 1999 SECTION 3 0 GENERAL M
8. cooler and washing system 2 1 First Milking Approximately 10 to 15 minutes prior to milking sanitize cooler in the following manner 2 1 1 2 1 3 Remove the bowl labeled Acid or Sanitizer discard its contents and rinse the bowl Add the proper amount of sanitizing solution based on the concentration ounces per gallon recommended for the brand used The concentration should be based on the gallons of rinse water shown in Table 1 Water Consumption Table Note Do not empty detergent bowl at this time With Mueller Matic pump and jet tube in the washing position and selector switch on control cabinet in Wash position advance Mueller Matic timer knob to the position marked Acid Rinse While preparations are being made for milking sanitizing will be completed and the Mueller Matic will automatically drain the cooler and shut off Note If preferred sanitizing solution may be placed directly in the cooler by advancing Mueller Matic timer knob to the position marked Acid Rinse and after water has started to enter the cooler placing into the cooler the proper amount of sanitizing solution Move selector switch to OFF position remove Mueller Matic pump and jet tube from cooler and replace outlet valve Move selector switch to COOL position no more than 5 minutes before adding warm milk Leave selector switch in COOL position Automatic timer will operate agitator independently of refrige
9. shipped in the parts box and must be installed on the cooler before the tubing is connected The liquid line must be flared with flare nut installed before connecting 1 5 2 Install the outlet of expansion valve on the liquid line of the cooler 1 5 2 1 Install the equalizer tube provided between the equalizer connection on the suction line and the external equalizer port on the expansion valve see Figure 4 1 5 2 2 Clean the bulb contact area of the suction tube 1 5 2 3 Using the perforated band nuts and bolts provided securely attach bulb to suction line with the pinched off tube on the bulb pointing up as shown in Figure 4 1 5 2 4 Wrap the bulb and suction tube with the insulation tape provided 1 5 2 5 Leak check all flare connections after the tubing is connected Figure 4 Thermal Expansion Valve TEV Installation No Description Specifications Part No 1A TEV 5 hp 1 2 inlet x 5 2 8802357 AAE 5HW R 22 MF outlet 1B TEV 3 5 4 hp 1 2 inlet x 5 8802356 AAE 4HW R 22 MF outlet 1 1 3 1 MF inlet x 5 s 8802355 AAE 3HW R 22 MF outlet 2 Sight Glass 1 2 MF x FF 8805416 TEV sensing bulb should be located a minimum of 10 tube diameters away from any fittings or bends Example 7 8 inch suction line x 10 83 inches Model OE Instructions Securely mount and insulate the TEV sensing bulb at a 4 o clock position on the copper s
10. switch and service wires of sufficient size to carry the total load and to comply with local regulations Install a separate circuit breaker or fused disconnect switch for the control cabinet with sufficient capacity for the agitator motor and Mueller Matic Do not include any appliances or outlets on these circuits For increased safety and improved appearance enclose all external wiring in electrical conduit 1 8 2 1 According to the National Electrical Code the branch circuit to a refrigeration unit may be protected with a fuse or circuit breaker 17596 of the unit full load ampere rating provided that the wire size is adequate Note The effect of abnormally high or low temperatures at circuit breakers should be considered if a thermal adjustable trip type is used 1 8 2 2 Model installations should be wired to provide the required capacities otherwise the compressor load with large quantities of warm milk may cause branch circuit protectors to open unnecessarily The compressor motors used have built in overload protection and the branch circuit protector need only protect against grounds and shorts 1 8 2 Your electrical power supplier should be advised of the anticipated increase in electrical load with the cooler in use 8 Effective August 31 1984 Reprint April 16 1999 1 9 Test Running Cooler 1 9 1 1 9 2 1 9 3 With control cabinet selector switch in OFF position and timer knob in OFF position t
11. 16 1999 Figure 2 120 Inch Pound Agitator Motor Installation Adapter with Ring RN es Grommet Washer cts Nut 1 2 2 8 Slide nut into position over rubber grommet and washer 1 2 2 0 While holding 3 wire cable to prevent twisting tighten nut 1 2 2 10 Replace motor access plate 1 23 Motor with Hollow Shaft Gear Reducer see Figure 3 1 2 3 1 Position agitator assembly in cooler up through agitator opening in the top of cooler Slip neoprene shaft shield over the end of the agitator shaft Note Be careful not to damage internal finish of the cooler during this operation 1 2 3 2 Install the agitator weather shield kit on coolers which are bulkheaded with the agitator outside of the milk room 1 2 3 3 Position spacer sleeves on studs Place motor and gear reducer in mounting position by slipping the hollow shaft gear reducer over the agitator shaft and secure with cap screws and lock washers 1 2 3 4 Align hole in agitator shaft with hole in the hub of hollow shaft gear reducer and insert drive pin 1 2 3 5 Make wiring connections to motor as indicated in Section 1 2 2 Figure 3 Hollow Shaft Gear Reducer Agitator Motor Installation Adapter with i Washer Agitator Cap Screws BN Coupling Lock la Washers i Sleeves Model OE Instructions 4 Effective August 31 1984 Reprint April 16 1999 1 3 Installing Mueller Matic Automatic Washing System and Contro
12. 4 5 1 2 Insert bulb for new temperature control in raceway of leg channel opening and push in place after coating bulb with heat conductive compound such as Presstite 446 See Service Bulletin 1098 in milk cooler section for proper installation 4 5 2 Replacing Thermometer Bulb 4 5 2 1 Remove screws holding dial thermometer and pull sensing tube and bulb upward from raceway 4 5 2 2 After coating bulb with heat conductive compound such as Presstite 446 insert new bulb through thermometer mounting hole and feed it down to bottom of raceway See Bulletin 1098 Model OE Instructions 24 Effective August 31 1984 Reprint April 16 1999 5 0 SERVICE CHECKLIST FOR COMMON PROBLEMS YOU MAY ENCOUNTER Trouble Remedy 1 Problem Compressor Running Too Long A Low refrigerant charge will be indicated by bubbles or smoky condition in liquid sight glass low suction and head pressure B High head pressure and long running time may be caused by dirty clogged up or blocked air cooled condenser or condenser fan or fans not running C High head pressure caused by overcharge of refrigerant D High head pressure caused by air or other non condensable gases in system E High head pressure caused by scaling of Fre Heater heat exchanger F Loss of compressor pumping capacity due to leaky burned or worn out compressor valve reeds This will be indicated by low head pressure and higher than normal suction pressur
13. 75 18 8 stainless steel slotted pan head 30555 35 Nut hex 6 32 NC 18 8 stainless steel 30530 36 Screw sheet metal 8 x 5 18 8 stainless steel Phillips head self tapping 30517 Model OE Instructions 18 Effective August 31 1984 Reprint April 16 1999 Chart 2 Mueller Matic Troubleshooting Chart Trouble Cause Correction 1 Washer will not operate in any a Blown fuse a Replace fuse cycle b Toggle switch on control cabinet in b Move selector switch to WASH OFF or COOL position position c Main switch open c Close switch d Loose wire d Open control cabinet and check using wiring diagram e Timer defective e Test for 230V across 1 and TM terminals Replace if 230V is present 2 Drain valve will not stay closed a Insufficient or irregular water a Increase water supply pressure pressure b Defective timer b Check for correct time interval as shown on Time Cycle Chart Chart 1 Note Drain valve closes when either wash or rinse water is on c Defective drain valve c See Figure 9 3 Drain valve will not open a Weak or broken water valve spring a Replace spring b Diaphragm binding in piston jacket b Lubricate diaphragm and stem or or stem binding in stem guide replace the diaphragm c Obstruction in orifice c Disassemble and remove obstruction 4 Pump will not prime a Insufficient water a Knob turned too far First rinse only affected Clean
14. AINTENANCE INSTRUCTIONS 3 1 Cooler Maintenance Although Mueller Milk Coolers are designed and built to provide years of trouble free service the following precautions and maintenance schedule should be observed 3 1 1 Always rinse out cooler immediately after emptying to be sure that milk does not dry on the cooler surface 3 1 2 Keep all surfaces of cooler inside and outside clean and free of deposits of foreign matter 3 1 3 Do not allow tools clamps or any wet objects to lie on the surface for a prolonged period of time 314 Do not enter cooler with shoes on or allow surface to be scratched in any way 3 1 5 Use only those cleaning solutions or materials specifically recommended for use on stainless steel Never use steel wool files coarse sandpaper or emery cloth 3 1 6 For detailed cleaning and maintenance instructions see section entitled Cleaning and Maintenance of Mueller Milk Coolers 3 2 Refrigeration Unit s Maintenance Mueller Model OE refrigeration units require little maintenance However to ensure that they are able to do the best cooling job possible air cooled condensers must be kept clean and well ventilated and Mueller Fre Heaters must have a continuous supply of clean water A water filter and in hard water areas a water softener are recommended 3 3 How to Save Service Calls If your Mueller Model OE Milk Cooler fails to operate consult How to Save Service Calls in this manual be
15. Low suction pressure could be caused by a low refrigerant charge or filled thermostatic expansion valve and if suspected the refrigerant charge should be verified with the weigh out weigh in method in the next section Table 2 Milk Temperature Suction Pressure Milk Temperature Normal Suction Fahrenheit Pressure psig 75 95 105 60 75 85 50 63 73 40 52 57 58 49 55 441 Weigh Out Weigh In Method Model OE Instructions 4 4 1 1 Use only clean Refrigerant 22 cylinders 4 4 1 2 Check the refrigerant smell burned refrigerant has a distinctive smell and or use an acid kit to determine if the system is contaminated 4 4 1 3 If the refrigerant is contaminated use a cylinder to reclaim the refrigerant and send it to a reclaim company 4 4 1 4 Install service gauges on the system Attach the low side gauge at the Schraeder valve on the suction line quick coupling and the high side gauge at the service port on the liquid line shutoff valve The charging hose should be attached to a clean empty recovery cylinder 4 4 1 5 Check the refrigerant for contamination purge the service gauges and hoses and weigh the empty cylinder 22 Effective August 31 1984 Reprint April 16 1999 4 4 2 Model Instructions 4 4 1 6 4 4 1 7 4 4 1 8 4 4 1 9 With the unit running close the liquid line shutoff valve turn clockwise about halfway Next open the high side servi
16. MODEL OE INSTALLATION OPERATING AND MAINTENANCE INSTRUCTIONS PART NO 8802174 EFFECTIVE 8 31 84 REPRINT 4 16 99 Wie THE MILK COOLING SYSTEMS SPECIALISTS MUELLER THE MILK COOLING SYSTEMS SPECIALISTS Table of Contents MODEL OE INSTALLATION OPERATING MAINTENANCE AND SERVICE INSTRUCTIONS Section 1 0 Installation Instructions Page Installing COoOler ton ceed exo eee edt doe o RC eee oce 1 Figure 1 Installing Bulkheaded Model OE 1 1 2 Installing Agitator Motor and Assembly 3 Figure 2 120 Inch Pound Agitator Motor Installation 4 Figure 3 Hollow Shaft Gear Reducer Agitator Motor Installation 4 1 3 Installing Mueller Automatic Washing System and Control 5 1 4 Installing Refrigeration Unit s ees 5 1 5 Installing Expansion Valve eee c hee eb XE dcin es 6 Figure 4 Thermal Expansion Valve TEV Installation 6 1 6 Connecting Pre Insulated Tubing eile 7 Figure 5 Suggested Refrigeration Piping for Mueller Model OE with Air Cooled Refrigeration Unit ia sga ia aia ERU EUR eee E E oa ee 7 1 7 Installing Optional Recording Thermometer Sensing Bulb
17. NOO 34 G3193NNOO LON S3HA NO 3595 JAYS 37 15 AB GGHSINUN 9 931100 NMOHS ONGA 1 SALON GONSIOS YILYM INOUIES ESNY OON3 OS 8 HSVM QION3 IOS H31LVA 2 9 8 V ES ES YOLV LIOW wa vaan _ 09509 S Effective August 31 1984 10 Model OE Instructions Reprint April 16 1999 Figure 8 Wiring Diagram Dual Unit Part No 8802134 Andes 123440998 03513 30195 uo ling JHL 301 01 Q3193NNOO S3UM LSAW BOLYIDY Y dad Y TNVd TIVA 8 931534405 LON SIYM UMOR VOWNYD NCAT WISN 2 NO OND WATWISN M3YOS HO XOvdS 5 031100 NANOHS 1 SILON GONSIOS 331v 1NOH4 SS SNR 90437105 31v 6 YOLOW GIONS IOS H31VA W3lV3H aan vaan NL 9NSN3ONO LNA 9NSNXNNO Effective August 31 1984 11 Model OE Instructions Reprint April 16 1999 SECTION 2 0 OPERATING INSTRUCTIONS After the Model OE System has been installed and checked according to the preceding Installation Instructions take the following steps for satisfactory operation of the
18. ce gauge valve This will allow liquid refrigerant to flow from the system into the empty cylinder When suction pressure begins to drop close liquid line valve Observe the low side service gauge When the low side pressure is down to 2 or 3 psig the unit should cut off on the low pressure control Do not pull the system into a vacuum If the unit does not cut off on the low pressure control turn it off at the nearest disconnect If you have not already done so turn the unit off at the control cabinet Recover the remaining refrigerant from the system This will usually be from 2 to 1 pound Weigh the refrigerant cylinder The difference between the beginning and final weight is the total charge which was in the system If the system is found to be undercharged check thoroughly for leaks Any leaks should be repaired the filter drier changed and evacuated before recharging with the proper charge of refrigerant If found to be overcharged it is usually the result of improper service procedures Consult OE Refrigerant Charge Table 3 for the correct charge before recharging the system After determining the proper charge for the unit weigh this amount of refrigerant into the system using the following procedure 4 4 1 9 1 Weigh the cylinder to determine the starting weight 4 4 1 9 2 With the unit still turned off at the control cabinet and the cylinder in the liquid feed position open both service gauge valves and allow liqui
19. d refrigerant to flow into the system The cylinder should be on a scale during this operation so the amount of refrigerant being put into the system can be observed 4 4 1 9 3 When the system and cylinder pressures equalize if the system has not reached the full charge close the high side service gauge valve and start the unit You can then pull the remaining charge into the system through the Schraeder valve on the suction line quick coupling Do not exceed the charge indicated in OE Refrigerant Charge Table 3 4 4 1 9 4 Before disconnecting the service gauges operation of the high pressure control should be checked in the following manner On air cooled units cover the top of the condenser and observe the head pressure The high pressure control should cut the unit off at 405 psig 10 psig If the high pressure control fails to cut the unit off it should be adjusted or replaced 4 4 1 9 5 Disconnect service gauges replace all electrical covers remove obstructions used to check the high pressure control on air cooled units turn on inlet water on Fre Heater units and be sure all electrical disconnects are on before leaving the unit Charging to Clear Sight Glass 4 4 2 1 The amount of charge shown in Table 3 should be adequate for most installations however there are some installations which will require additional refrigerant charge These installations will require using the sight glass to indicate when the system is pr
20. e G Tubing where refrigerant leaves cooler is too warm or too cold H Ice on evaporator causing loss of heat transfer efficiency Check refrigerant charge by weigh in weigh out method Clean condenser Check fans Check refrigerant charge by weigh in weigh out method Remove refrigerant charge reevacuate and recharge Descale heat exchanger as directed in Fre Heater Instructions Consult the Sales Service Manual for check on this Replace Compressor if required Expansion valve superheat improperly set or uneven refrigerant distribution to circuits Defective expansion valve poor contact between bulb and suction tube or temperature control set too cold Agitator motor is not running 2 Problem High Blend Temperature A high blend temperature of milk on subsequent milkings can be caused by one or more of the following problems A Loss of refrigeration capacity B Condensing unit not starting soon enough C Temperature of milk in cooler not low enough at beginning of the adding period Any one of the causes listed for Compressor Running Too Long could be applicable as a possible reason for loss of capacity Temperature controller set too high too large differential or defective temperature controller Also start agitator with switch at beginning of milk adding period Set temperature control dial colder Check temperature of milk when condensing unit cuts OFF and ON
21. e Mueller Matic Automatic Washing System Follow the spray equipment manufacturer s instructions Tbe above suggestions are taken from publications of Allegbeny Ludlum Steel Corporation National Association of Dairy Equipment Manufacturers Food Management and tbe American Iron and Steel Institute Model OE Instructions 26 Effective August 31 1984 Reprint April 16 1999 SECTION 7 0 HOW TO SAVE SERVICE CALLS 7 1 General Information If your Mueller Milk Cooler fails to operate properly check the following before requesting service 7 1 1 71 2 7 1 3 7 1 4 7 1 5 7 1 6 Be sure main electrical switch is closed and switch on control box on wall is in Cool position Check all fuses including the large cartridge fuses in the main entrance panel Keep extra fuses of the right size on hand Check air cooled condenser to be sure it is not partially clogged with dust lint or debris It can be brushed vacuumed or blown out with compressed air to clean It is important that the condenser be kept clean and well ventilated Condenser fins should be straight and in good condition If your cooler fails to operate during or immediately after an electrical storm or milk house lights are dimmed by the cooler trying to run place the selector switch in the OFF position and call your serviceman If the unit fails to start during extremely cold weather place a heat lamp next to the condenser of the refrigeration unit T
22. erature control settings Leave selector switch in COOL position 2 3 Butterfat Sampling 2 3 1 2 3 2 After pick up tank truck driver records the temperature and amount of milk in the cooler he will want to agitate milk for a butterfat sample To agitate milk for a sample turn agitator timer knob clockwise to ON position while selector switch is in COOL position The agitator will run for approximately 3 minutes before shutting off automatically Agitation can be halted by advancing timer knob Coolers smaller than 1 600 gallons should be agitated through two time cycles Agitate 1 600 gallon coolers through three time cycles 2 4 External Measuring Guide Optional 2 4 1 2 4 2 2 4 3 2 4 4 2 4 5 After determining milk volume close milk outlet valve on cooler Disconnect hose from fitting on outlet valve and dispose of the milk which drains from the hose and the tube Remove hex nut and quick connect tube coupling from outlet valve and place in wash vat for hand cleaning After milk has been removed from cooler remove outlet valve and place in wash vat for hand cleaning If gauge is used between milkings and cooler will not be washed immediately close outlet valve and dispose of milk in gauge tube Properly clean the gauge tube by disconnecting hoses from cooler and flushing from the top to remove milk residue then reconnect the hoses 2 5 Emptying Cooler The following steps must be take
23. erse order Auto drain valve assembly The auto drain valve assembly see Figure 9 is activated by water pressure It can be disassembled for service or replacement of parts The drain valve assembly controls the flow of water into the washing system Amounts are metered by a neoprene flow control orifice and will deliver proper amounts of water with pressures from 10 psig minimum to 75 psig to a maximum of 170 F Note Water pressures over 75 psig will require a pressure regulator otherwise damage to the water solenoid valves and drain valve may result The timer is a precision electrical instrument Do not attempt to disassemble the timer The Time Cycle Chart see Chart 1 shows the sequence of operations as governed by the timer It indicates when each circuit is energized and is keyed to the terminals as numbered on the timer and wiring diagrams Oil top bearing in the pump motor once per year If at any time your Mueller Matic does not operate consult the Troubleshooting Chart in this manual 16 Effective August 31 1984 Reprint April 16 1999 Figure 9 Mueller Matic Pump Assembly Pump Motor Housing Gasket Adapter Clamp Rubber Outlet Ferrule Adapter 17 Piston and Flow Control Orifice Seal Retainer Housing Piston Bonnet Piston Nut Piston Diaphragm Seal Rotary Stem Impeller Piston Jacket Valve Assembly Valve Spring Drai
24. es available at most hardware stores for removing stubborn deposits DON T use more detergent or sanitizing compound than called for in manufacturer s directions This not only saves materials but also prevents dulling the metal surface or possible corrosion DON T put detergent or concentrated sanitizing compounds in empty cooler HAVE WATER IN TANK FIRST DON T let cleaning or sanitizing solutions remain in cooler for more than 20 minutes DON T splash or permit such solutions to dry on surface It s good practice to sanitize just before product enters coolers DON T let water evaporate in cooler Salts settle out of most waters and may stain the surface Drain completely DON T apply pressure in cooler 6 2 Suggested Cleaning and Bactericidal Treatment 6 2 1 Rinse out solids foam etc with cold water immediately after product is removed 6 2 2 Before washing rinse with warm water 6 2 3 Dissolve cleaning compound in container of warm water Use the amount of cleaning compound recommended by the chemical manufacturer 6 2 4 acidified rinse may be used as a final rinse without harming the surface Follow the chemical manufacturer s instructions carefully 6 2 6 Sanitize the tank immediately before product enters Brush or spray all product contact surfaces with 200 ppm maximum chlorine solution or other approved sanitizing compounds 6 2 7 coolers are designed to be cleaned by spray equipment such as th
25. fore calling your serviceman 3 4 Adjusting Temperature Control Set Point 3 4 1 Turn off all electrical power to the cooler and condensing unit s 3 4 27 Remove stainless steel access plate on right front corner of cooler 343 Remove temperature control cover and turn adjusting screw to a colder or warmer setting 3 44 Replace rubber access cover and stainless steel access plate making sure the sealing gasket is spread evenly along all edges of plate for a positive water seal 3 4 5 Turn on power to the cooler and refrigeration unit s Model OE Instructions 15 Effective August 31 1984 Reprint April 16 1999 3 5 Mueller Matic Automatic Washing System Maintenance Your Mueller Matic is engineered to give you maximum service with minimum care In order to ensure years of trouble free service the following periodic inspections and servicing should be performed 3 5 1 3 5 2 3 3 3 3 5 3 3 5 4 3 5 5 3 5 6 3 5 7 Model OE Instructions Check hoses for breaks or cracks and hose clamps for loose connections Clean water supply strainers regularly as follows 3 5 2 1 Close water supply valves and remove hose assemblies 3 5 2 2 Remove clean and replace strainers 3 5 2 3 Reinstall hose assemblies 3 5 2 4 Open water supply valves Clean dispenser bowl strainers as follows 3 5 3 1 Remove bowl 3 5 3 2 Remove bowl strainer retainer ring and bowl strainer 3 5 3 3 Clean strainer screen and install in the rev
26. frigerant that has been evaporated and further heated above the evaporation point of the refrigerant Maximum efficiency is obtained by minimizing the amount of superheated vapor refrigerant in the evaporator since liquid refrigerant removes heat more efficiently from the milk than superheated refrigerant vapor The expansion valves used on Model OE Mueller Milk Coolers are preset to obtain 4 F superheat with a 38 F product Note Before checking expansion valve superheat be sure that the unit is properly charged with refrigerant see Section 4 4 To determine at what superheat the valve is operating connect a suction gauge to the external equalizer line of the expansion valve With the machine running and the suction pressure approximately stable take an accurate suction line temperature reading at the expansion valve bulb location At the same time take a suction pressure reading Refer to a refrigerant Temperature Pressure Chart and convert the suction pressure reading to an equivalent saturation temperature Subtract this reading from the suction line temperature reading and the difference will be the operating superheat For example REFRIGERANT 22 Suction Line Temperature 31 F Suction Pressure 51 psig Equivalent Saturation Temperature 27 31 F 27 F 4 F Superheat As a guide when the temperature of milk in the cooler is 38 F normal pressure in the equalizer line will range
27. from 51 to 54 psig for Refrigerant 22 If the suction pressure at this temperature 38 F drops below 41 psig for Refrigerant 22 immediate steps should be taken to determine the cause Usually it will be found that the superheat is too high Important points to remember about checking expansion valves include 4 2 3 1 There must be good thermal contact between the expansion valve bulb and the suction tube 4 2 3 2 Superheat should be checked in the 38 to 40 F milk temperature range Problems may not be evident if superheat is checked at higher milk temperatures 4 2 3 3 Increased superheat reduces the suction pressure Decreased superheat setting will raise the suction pressure 20 Effective August 31 1984 Reprint April 16 1999 4 2 3 4 Suction temperature readings for determining the superheat should be taken on the suction line at the expansion valve bulb location The evaporator surface should be at least 85 covered with water or milk when taking superheat readings 4 2 3 5 If it is determined that the expansion valve is not properly controlling the superheat the valve should be replaced A typical expansion valve failure is due to loss of charge in the expansion valve bulb which allows the valve to close and results in low suction pressure and high superheat Figure 11 OE Milk Cooler System Diagram Liquid In Suction Out Liquid Coil Oil Return Orifice Model OE Instructions 21 Effective August
28. his should warm the refrigerant enough to start the unit If the compressor starts and stops every few minutes during the cooling period or runs longer than normal a competent refrigeration serviceman should check it out as soon as possible If you need service call the following numbers in order listed Ask your Mueller dealer to fill in these phone numbers 1 Model OE Instructions 27 Effective August 31 1984 Reprint April 16 1999
29. imer knob on control cabinet clockwise only to start system Observe entire operation through one complete cycle to see that each function takes place as marked on the Mueller Matic timer dial plate Check all water connections for leaks Observe spray pattern to see that all areas of cooler are being covered Direction of spray can be changed by raising or lowering the pump on the adjustable leg stand After locating pump assembly in the proper position drill two No 20 holes Cwith drill bit provided in the tubular legs through the holes in the leg bracket Install self tapping screws to prevent leg slippage and misalignment of the pump assembly If at any time your Mueller Matic does not operate properly consult Mueller Matic Troubleshooting Chart in the Maintenance Instructions Important Notes 1 10 8 1 To stop operation of the Mueller Matic move timer knob on control cabinet clockwise only to OFF position 1 10 8 2 The Automatic Washing System will not operate when the selector switch on the control cabinet is in the OFF or COOL position 9 Effective August 31 1984 Reprint April 16 1999 Figure 7 Wiring Diagram Single Unit Part No 8802133 831000 HOLVLIOV gooey te V IOHINCO ANAL 0 00 NWOWNYD HL 30 199 OL 1574 HOLYLOY ded 7249 O31NDOW TIVA 3H1 33138 ONAM VOVNYO Q3TIVISN 3 Z 32795 Ling Q31293N
30. in valve hose to water outlet connection tube on bottom of control cabinet and tighten hose clamp over water outlet tube as close to bottom of control cabinet as possible Feed pump power cord and grommet through opening in back of control cabinet and insert into hole provided in bottom of top compartment Connect wires according to wiring diagram see Figure 7 or Figure 8 1 4 Installing Refrigeration Unit s 1 4 1 1 4 2 Model OE Instructions Locate refrigeration unit s close enough to cooler so that tubing can easily reach from unit s to cooler without requiring sharp bends in the lines see Figure 5 Air Cooled Units 1 4 3 1 Provide a suitable solid base under protective shelter with adequate air circulation Note See separate sheet Recommended Installation of Air Cooled Refrigeration Units 1 4 3 2 Condenser face must be accessible for periodic cleaning and located at least 18 inches from any wall Permanently anchor condensing units to the base Note Do not install refrigeration unit s under same shelter with vacuum pump 5 Effective August 31 1984 Reprint April 16 1999 143 Mueller Fre Heater Units Provide a suitable solid base in a location which is protected from freezing temperatures and accessible to water and electrical connections Note See separate sheet Fre Heater Installation Operation and Maintenance Instructions 1 5 Installing Expansion Valve 15 1 The expansion valve is
31. ion Unit s Maintenance 15 3 3 How to Save Service Calls 1 2 sss beso eee PLS eee 15 3 4 Adjusting Temperature Control Set Point 15 3 5 Mueller Matic Automatic Washing System 16 Figure 9 Mueller Matic Pump Assembly 17 Figure 10 Mueller Matic Control Cabinet 8 5 18 Chart 2 Mueller Matic Troubleshooting Chart 19 Table of Contents Continued Section 4 0 Service Instructions 41 Sequence of Operation cs cca sae ah eee ee ee ee eae ees 20 42 Thermostatic Expansion Valve 20 Figure 11 OE Milk Cooler System Diagram 21 Figure 12 Accumulator Heat Exchanger 21 4 3 Accumulator Heat Exchanger 0 eee eee 22 44 Befnger nt CDarge ca ead ak ee biduo Eh RE 22 Table 2 Milk Temperature Suction Pressure 22 Table 3 OF Refrigerant Charge Estimated Start Up Charge 24 4 5 Temperature Control and Thermometer Bulbs 24 Sectio
32. l Cabinet Jet Tube Models Only 1 3 1 1 3 2 1 3 3 1 3 4 1 3 5 1 3 6 1 5 7 1 3 8 1 5 9 Remove milk outlet valve from cooler and place in wash vat for cleaning Insert Mueller Matic jet tube into cooler until rubber adapter fits tightly over outlet ferrule Adjust legs on pump until the center of the spray head on jet tube is three inches above inside bottom of cooler Select a convenient location about five feet from the floor for the control box keeping in mind the 13 foot length of the Mueller Matic hose and pump power cord plus availability of water and electrical power Using the enclosed template as a guide mark the location of the three screw holes on the wall and following instructions on the template fasten cabinet to the wall Note Water pressure at the Mueller Matic cabinet must be between 10 psig minimum and 75 psig maximum Connect backflow preventer to cold water hose assembly and attach to existing cold water supply Attach cold water hose assembly to front solenoid valve connection on bottom of control cabinet Attach backflow preventer to hot water hose assembly then connect to existing hot water supply 140 F minimum to 170 F maximum Note Because wire strainers in the solenoid valves require periodic cleaning shut off valves should be installed in the connecting water lines Connect hot water hose assembly to rear solenoid valve connection on bottom of control cabinet Connect dra
33. n 5 0 Service Checklist for Common Problems 25 Section 6 0 Cleaning and Maintenance of Mueller Milk Coolers 5 1 General Information dace teks dye hae ew ee be UR ace cnt a ee deat 26 5 2 Suggested Cleaning and Bactericidal Treatment 26 Section 7 0 How to Save Service Calls 27 SECTION 1 0 INSTALLATION INSTRUCTIONS 1 1 1 1 1 1 1 2 1 1 5 Installing Cooler Remove open type crating and packaged parts Do not remove skids at this time Inspect cooler and report any damage to transportation company delivering the cooler File claim immediately Move cooler into milk house and position it according to approved milk house floor plans or local dairy regulations Note 36 minimum distance required between the milk outlet ferrule and the wall on 300 to 1 600 gallon coolers with jet tube Mueller Matic pump Bulkheading 1 1 4 1 If the cooler is to be bulkheaded a structural steel wall support channel and sealing insulation strip are available see Figure 1 1 1 4 2 Build the slab or footings for the portion of the cooler which will be outside of the milk room in accordance with local construction codes and large enough for the loaded weight of the cooler Figure 1 Installing Bulkheaded Model OE Footing width and NN depth per local soil conditions
34. n Valve Plug Drain Valve Gasket Jet Tube Assembly Drain Valve Gasket Tie Band Clamp Model OE Instructions Effective August 31 1984 Reprint April 16 1999 Figure 10 Mueller Matic Control Cabinet ME DELAYED START DELAYED START BOTTOMUNIT ONLY WASH ON e 16 BOTTOM VIEW 1 Wash timer assembly kit 36 minute cycle used on milk coolers up to 1 600 gallons 8800116 2 Wash timer assembly kit 72 minute cycle used on milk coolers above 1 600 gallons 8800117 3 Knob timer 25 round shaft socket 30080 4 Relay DPDT 240 vac coil 20 am 8800954 5 Relay 3PDT 240 vac coil 10 amp 8805215 6 Contactor DPST 240 vac coil 20 amy 30750 7 Agitator timer kit automatic interval SPST 240 vac 90775 8 Heater assembly 10K ohm 5 watt 92862 9 Terminal Block 6 Pole 3345 10 Cap plug plastic 1 125 31025 11 plug plastic 875 30119 12 Time delay 40 second with 45 second reset 240 vac 93050 13 Label COLD 3792 14 Label 3791 15 8800351 16 8800485 8800853 18 3995 19 8805637 20 8806087 21 8805257 22 31400 23 30146 24 30581 25 30423 26 30359 27 30095 28 and screen 91868 29 30764 30 91861 31 Stance detergent 21708 32 Screw sheet metal 8 x 5 18 8 stainless steel Phillips head 30882 33 Speed nut 8 32 Type U 31058 34 Screw machine 6 32 NC x 3
35. n before pumping milk out of the cooler 2 5 1 Move Selector switch on control cabinet to OFF position CAUTION Be sure vent assembly is over milk inlet opening and release hold down clamps on manhole cover to provide additional venting To equalize pressure inside and outside of cooler during filling emptying and washing it is recommended that vent assembly be kept on the inlet at all times 2 5 2 Model OE Instructions Empty cooler and rinse out remaining milk solids with tepid water 13 Effective August 31 1984 Reprint April 16 1999 2 6 Washing Cooler After cooler has been emptied it should be washed in the following manner 2 6 1 Remove outlet valve from cooler and insert jet tube into cooler outlet until rubber adapter fits tightly over outlet ferrule 2 6 To wash external gauge tube during cooler wash with Mueller Matic connect lower gauge hose to fitting on side of Mueller Matic pump assembly Be sure upper hose is inserted on top of cooler 2 6 5 sure the vent assembly is properly installed to equalize pressure inside and outside of cooler during washing 264 Remove the dispenser bowl labeled Detergent and discard its contents Add the proper amount of detergent recommended for the brand used The concentration should be based on the gallons of wash water shown in Table 1 Water Consumption Table Note Save yourself repeated measuring by marking proper detergent
36. operly charged 23 Effective August 31 1984 Reprint April 16 1999 4 4 2 2 To correctly charge a system using the sight glass the product in the cooler should be between 38 to 42 F Slowly add refrigerant until the sight glass is just clear an occasional bubble may be seen this is normal Keep in mind that the system will require slightly more refrigerant in the winter than in the summer 4 4 2 3 The sight glass must be located as close to the inlet to the thermostatic expansion valve as possible There must not be any valves or filter dryer between the sight glass and the TXV 4 4 2 amp Small bubbles moving very fast through the sight glass does not necessarily indicate a low charge This is more likely an indication of the superheat set too low Table 3 OE Refrigerant Charge Estimated Start Up Charge Unit Air Cooled Unit HP Refrigerant Charge Lbs 3 11 4 12 5 13 4 5 Temperature Control and Thermometer Bulbs The temperature control is located behind an access plate on the right front leg channel of the cooler and the thermometer is mounted in the front head of the cooler Both sensing bulbs are located in raceways on the bottom of the front head just to the right of the outlet valve 4 5 1 Replacing Temperature Control Bulb 4 5 1 1 Remove temperature control access plate from leg channel and pull temperature control capillary tube and sensing bulb from raceway in the leg channel opening
37. pressor not to run or to go on and off periodically Some of the more obvious ones are listed bere For a more detailed analysis of compressor starting and running problems see tbe Technical Data Section of tbe Sales and Service Manual The above list does not encompass all of the electrical and mechanical problems that may be encountered in servicing a condensing unit 9096 of compressor starting and running difficulties will normally be electrical Starting or running capacitors relays and overload protectors should be all carefully checked in accordance with the Technical Data Section of the Sales Service Manual or replaced in case of doubt Model OE Instructions 25 Effective August 31 1984 Reprint April 16 1999 SECTION 6 0 CLEANING AND MAINTENANCE OF MUELLER MILK COOLERS 6 1 General Information All metal product contact surfaces of this equipment are manufactured from one of the 300 series stainless steels These alloys are suitable for use with most food and similar products Because it is easy to clean and maintain it will remain bright and spotless by following these suggestions DON T let deposits of foreign matter of any kind remain on the surface for more than several hours at any one time DON T let pails tool or wet objects lie on the surface even overnight DON T enter the cooler with shoes on or scratch the surface with files steel wool coarse sand paper or emery cloth Use only stainless steel spong
38. ration unit s for 3 minutes out of every 30 minutes The temperature control will operate agitator and refrigeration unit s whenever cooling is required Table 1 Mueller Matic Water Consumption Table Use this chart for calculating the proper amount of detergent acid or sanitizer Orifice Water Consumption Model Orifice Color Code Detergent Wash Cycle Final Rinse Cycle 76 Series 1 2 gpm HN 9 4 gallons 8 8 gallons 1 5 gpm HM 11 7 gallons 11 0 gallons 2 6 gpm HR 20 3 gallons 19 0 gallons 3 0 gpm HH 23 5 gallons 22 0 gallons 326 Series 1 5 gpm HM 11 7 gallons 11 0 gallons 1 8 gpm HY 14 0 gallons 13 1 gallons 2 6 gpm HR 20 3 gallons 19 0 gallons 3 0 gpm HH 23 5 gallons 22 0 gallons 727 Series 1 5 gpm HM 23 4 gallons 21 9 gallons 1 8 gpm HY 28 0 gallons 26 3 gallons 2 6 gpm HR 40 6 gallons 38 0 gallons 3 0 gpm HH 46 8 gallons 43 8 gallons Optional Orifice Model OE Instructions 12 Effective August 31 1984 Reprint April 16 1999 2 2 Subsequent Milkings 2 2 1 2 2 2 Just prior to milking turn agitator timer to delayed start Agitator will not run for approximately 10 minutes The agitator will then start and run for approximately 3 minutes blending warm and cold milk During this period warm milk entering cooler will cause refrigeration unit s to start Agitator and refrigeration unit s will continue to run until milk is cooled to the temp
39. screens straighten hose Check timer against time chart in manual See Chart 1 b Water pressure too low b Raise pressure at water supply pump control if necessary c Water pressure too high c Install Part No 30729 clip in drain valve plug 5 Pump loses prime a Loss of water from drain valve a Check water pressure Check water pressure tank b Loss of water around cooler cover Adjust spray to minimize loss of water at cooler openings Note Larger flow control s are provided for special field problems where an excessive amount of water is lost around the covers See Table 1 6 Water leaks around dispenser bowl a O ring worn a Replace b Irregular lid b Replace c Dry O ring c Lubricate with food grade lubricant 7 Pump will not start a No power to pump a Check pump electrical connections Check wiring against diagram Check timer b Defective motor or capacitator b Check for open winding shorts or grounds 8 Water not hot enough a Too small or defective hot water a Repair or replace heater heater b Long piping run from hot water b Insulate pipes or raise temperature heater setting at hot water tank 9 Not enough water see Table 2 Clogged flow control orifice b Solenoid not opening Remove drain valve assembly and clean orifice b Check solenoid coil Check wiring c Drain valve leaking c Increase water pressure to close plug Align plug wi
40. th seat d Strainer plugged d Remove and clean e Plugged pipe or hose e Remove and clean 10 Areas of cooler not being a Improper spray pattern a Adjust legs on pump and observe cleaned spray pattern b Plugged spray head b Reverse flush Model OE Instructions 19 Effective August 31 1984 Reprint April 16 1999 SECTION 4 0 SERVICE INSTRUCTIONS 4 1 Sequence of Operation The Mueller Model OE Milk Cooler features a thermostatic expansion valve refrigeration system controlled by a mechanical temperature control on the cooler When the temperature control sensing bulb located in a bulb clip on the front head of the cooler senses an increase in temperature the contacts in the control close This energizes the magnetic coil of the cooling relay in the wall mounted control cabinet which in turn energizes the agitator relay in the control cabinet and the refrigeration unit contactor on the unit starting the agitator motor and the refrigeration unit On dual unit coolers the time delay switch energizes the refrigeration unit contactor after a 40 second delay starting the second unit 4 2 Thermostatic Expansion Valve 4 2 1 4 2 2 4 2 3 Model Instructions The thermostatic expansion valve ensures that the correct amount of liquid refrigerant is delivered to the evaporator coil by sensing and controlling the amount of superheated vapor in the evaporator The superheated vapor being that re
41. uction line Horizontal mounting is always recommended when possible If vertical mounting is required maintain the minimum dimensions as stated above 12 o clock 6 Effective August 31 1984 Reprint April 16 1999 1 6 Connecting Pre Insulated Tubing 1 6 1 1 6 2 1 6 3 1 6 4 1 6 5 1 6 6 1 6 7 Place entire coil of 2 4 or 7 suction line tubing beside refrigeration unit s and carefully straighten tubing and feed toward cooler through pre cut openings in milk house wall and ceiling Repeat above steps using s liquid line tubing Note Do not remove protector caps until tubing is ready to be connected Carefully bend tubing around corners being sure to keep each radius more than 6 in the 3 4 line 4 in the 7 s line and 3 in the s line Severe bends may crimp tubing and restrict refrigerant flow The 7 line is a softer bendable tubing Bring tubing down through ceiling opening to refrigerant connection on rear of cooler Remove protector caps and deburr tubing see Figure 5 Clean all mating surfaces of tubing with a clean cloth and sand with emery cloth if needed Solder tubing joints with low percentage silver solder Connect tubing to refrigeration unit s or Fre Heater s in a similar manner Excess tubing should be removed Repeat entire procedure for remaining refrigerant lines Figure 5 Suggested Refrigeration Piping for Mueller Model OE with Air Cooled Refrigeration Unit Model
42. uick connect adapter Slip other end of the hose over adapter at bottom of gauge tube Place O ring on quick connect to valve adapter Install on outlet valve with hex nut Connect hose to outlet valve and tighten clamps Level Cooler 13 7 4 1 1 7 2 1 1 7 3 1 1 7 4 Use a jack with cradle in the shape of the cooler to raise or lower each end of the cooler Level to comply with local regulations concerning proper height of milk outlet and bottom of cooler from floor Adjust legs to maintain this height On coolers with more than four legs keep inner legs raised off the floor until the levels read level and front and rear legs are adjusted to maintain that position Then extend inner legs to fit firmly against floor Double check height of outlet and bottom of cooler to be sure minimum clearance is still correct As a final check pour into cooler the exact amount of water indicated in lower left hand corner of calibration chart which reads Tank must be leveled to a gauge reading of with gallons of water in the tank To assure accuracy use calibrated measuring cans inspected and approved by a weights and measures inspector Thoroughly wash internal measuring rod with warm soapy water Rinse off all traces of detergent dry it and dust graduated surface with Bon Ami powder in the general area of measurement called for on calibration chart Since a thin coating of powder gives the clearest reading any excess powder sho
43. uld be blown off or removed by jarring the rod 2 Effective August 31 1984 Reprint April 16 1999 1 127 1 1 7 6 T When surface of water is quiet carefully lower measuring rod straight down into water so as not to disturb the surface in any way If water surges after rod is seated in its bracket or support a false reading will be given Once measuring rod is firmly seated in its bracket or support it should then be withdrawn promptly for reading For external measuring gauge attach lower hose to the outlet valve When surface of water is quiet open outlet valve slowly and let water flow into gauge tube After water stabilizes in tube line up the level gauge with water level in the tube and take reading from gauge bar on front of cooler If reading shows less than that called for on calibration chart adjust rear legs of cooler to raise the end opposite the outlet If reading too high lower back end of cooler by adjusting rear legs are two types of Bon Ami now available on the market The new type containing bleach should be avoided as it will not give an accurate reading In most areas the old type is difficult to obtain but it is available from Paul Mueller Company Always insist on the Bon Ami in the red and yellow can the one without bleach 1 2 Installing Agitator Motor and Assembly 1 2 1 1 2 2 Model OE Instructions 120 Inch Pound Agitator Motor Installation see Figure 2 1 2 1
44. urn disconnect switches to the ON position Move selector switch to COOL position Agitator will turn and refrigeration unit s will start Connect refrigeration drum and slowly open suction service valve to charge system Place sufficient water in cooler to cover agitator blade The temperature control will shut off unit s when the water is cooled to approximately the temperature control cut out point 37 F recommended After water has been cooled and unit s stop advance agitator timer knob to ON position The agitator will run for 3 minutes but the refrigeration unit s will not start until the water is warmed to approximately the temperature control cut in point Add warm water very slowly to restart unit s which should occur at approximately 40 F Adjustment of temperature control may be necessary Consult Maintenance Instructions for proper procedure 1 10 Test Running Washing System 1 10 1 1 10 2 1 10 3 1 10 4 1 10 5 1 10 6 1 10 7 1 10 8 OE Instructions Remove outlet valve from cooler and insert jet tube into cooler outlet until rubber adapter fits tightly over outlet ferrule Place vent assembly over milk inlet opening Remove the bowl labeled Detergent add detergent and replace bowl Remove the bowl labeled Acid or Sanitizer add non foaming food grade acid cleaner and replace bowl Move control cabinet selector switch to WASH position and advance Mueller Matic t
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