F3Dn Service Manual Refrigeration / Section 4.1 4.1 Basic [Operator
Contents
1. Expansion Valve Roll F3Dn unit out to disconnect power at outlet Pull plug Using a medium Phillips screwdriver remove two screws securing control panel and the four screws on the sloped access panel Note Recover any residual refrigerant and ensure line pressure is equalized to zero before opening the refrigeration system IMPORTANT Any residual refrigerant charge should be recovered in strict accordance with the Federal Clean Air Act Cut line to free valve and filter using a small tubing cutter Remove existing Expansion Valve amp Filter Assembly Install new Expansion Valve amp Filter Assembly P N 19000496 IMPORTANT wrap valve body with a wet rag before applying any heat to prevent any damage Braze lines as required When resealing the system use a continuous Nitrogen charge to assure no contaminants enter the system especially when brazing Mount sensor bulb using the strap clamp provided to the suction line in the 10 o clock or 2 o clock position DO NOT mount in 12 o clock or 3 to 9 o clock position Before recharging the system pull a vacuum equivalent to 30 inches 760 mm of Mercury for a minimum of 30 minutes Recharge the system with R404A refrigerant per nameplate label specification Test operation of Refrigeration System by 10 11 12 13 14 For Technical Support Call 800 537 2653 Plug in power cord to power outlet Turn ON unit at Main Power ON Switc2. Laws covering the handling of hazardous materials When resealing the system use a continuous Nitrogen charge to assure no contaminants enter the system especially when brazing Before recharging the system pull a vacuum equivalent to 30 inches 760 mm of Mercury for a minimum of 30 minutes Recharge the system with R404A refrigerant per nameplate label specification Test operation of Refrigeration System by 9 10 11 12 For Technical Support Call 800 537 2653 Plug in unit power cord to power source Turn ON unit at Main Power ON Switch lf compressor starts and brings the Freezer compartment down to the normal operating temperature range of 0 to 10 F 18 to 23 C proceed to Step 12 Reassemble sloped access panel and control panel and return F3Dn dispenser to normal operating location if it was moved Photo 1 Remove two control panel screws and four screws on the sloped panel to access compressor compartment Photo 2 Recover any residual refrigerant and ensure line pressure is zero before opening system Photo 3 f th When resealing the system or repairing leaks use continuous Nitrogen charge to keep contaminants out gt Rev 2 11 06 Copyright 2006 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 7 FRANKE 4 7 Thermostatic Expansion Valve amp Filter 9 Assembly Replacement Part Number 19000496
3. System by 13 Plug in power cord to power outlet 14 Turn ON unit at Main Power ON Switch 15 If compressor starts and brings the Freezer compartment down to the normal operating temperature range of 0 to 10 F 18 to 23 C repair is complete gt gt gt gt gt gt gt 16 Replace sloped access panel and control panel then Rev 2 12 06 return F3Dn to normal operating location For Technical Support Call 800 537 2653 Copyright 2006 Franke Inc All rights reserved
4. F3Dn Service Manual Refrigeration Section 4 1 ANKE 4 1 Basic Operator Refrigeration Maintenance Before attempting service failure diagnosis or component repairs verify basic operator maintenance has been done PROBLEM Freezer is running but will not reach 0 F 18 C or lower High temperatures caused by a dirty condenser coil or extreme ice buildup may cause the freezer to function improperly not maintain temperature or cease operating 1 Open the freezer compartment door and verify that it has been defrosted If significant ice buildup is present turn OFF main power open the freezer compartment door and allow the ice to melt 2 Check freezer door gasket for damage If damage is found see Section 2 2 Door Gasket Replacement 3 Remove the top right side louvered access panel Lift up and pull out 4 Inspect the Condenser Coil Filter If dirty wash in sink Allow the filter to dry completely before replacing 5 Inspect the condenser coil to ensure it is clean and free of dust and debris If it is dirty clean it with a soft bristle brush or portable vacuum CAUTION Avoid contact with fins on the condenser coil and any refrigeration lines The fins are very sharp and can cause cuts Certain refrigerant lines can be very hot and could cause burns to exposed skin The use of gloves is recommended 6 Test unit for operation within 0 to 10 F or 18 to 23 C normal operating temperature range 7 If t
5. Manual Refrigeration Section 4 4 FRANKE 4 4 Start Capacitor Start Relay Replacement For Model Use Capacitor P N Use Relay P N 115 V 60Hz 19001085 19001082 230V 50Hz 19001080 Kit containing both 1 Roll F3Dn unit out to disconnect power at outlet 2 Using a medium Phillips screwdriver remove two screws securing control panel and the four screws on the sloped matt black access panel 3 Lift off and remove metal cover over black metal relay capacity box mounted behind the compressor 4 Using needle nose pliers carefully remove the capacitor leads from the terminal block without touching each other or the metal box WARNING High voltage warning Use caution There is a danger of electrical shock which can cause injury or even death 5 Unsnap the plastic retainer clip holding the capacitor and then remove the capacitor 6 Install the new capacitor and snap retainer clip 7 Connect capacitor leads to the terminal block Test operation of Compressor by 8 Plug in unit power cord to power supply 9 Turn ON unit at Main Power ON Switch 10 If compressor starts and runs proceed to Step 19 11 To replace Start Relay Using needle nose pliers disconnect the 7 wires from the relay terminals 12 Using a small screwdriver remove 2 screws mounting the relay to the electrical enclosure and remove the relay 13 Install the new relay and secure with those two screws 14 Reconnect the 7 wires to the r
6. ard Attach the new Condenser Fan Motor P N M40045 CA27 E8 115V 60Hz or M4Q045 CF13 A7 230V 50Hz to fan guard using the four nuts just removed Position fan on motor shaft with setscrew facing flat side of shaft then tighten setscrew Position fan assembly over four mounting screws and secure using the four lock nuts removed earlier Reattach the three Fan Motor wires at terminal block Wire colors are Blue Brown Green Slide metal cover back on relay capacitor box Test Operation of new Condenser Fan Motor by 14 15 16 17 For Technical Support Call 800 537 2653 Plug in unit power cord to power supply Turn ON unit at Main Power ON Switch Allow compressor to draw unit down to its normal operating temperature range which should be between 0 and 10 F 18 to 23 C Unit should maintain that operating temperature if freezer compartment door remains closed Reattach the sloped compressor access panel and control panel and return dispenser to normal operating location Photo 1 Remove the front control panel and sloped access panel The relay capacitor box is mounted above the compressor Photo 2 Disconnect Condenser Fan Motor wires inside the metal relay capacitor box Remove the four fan housing mounting nuts remove fan blade and separate motor from fan cover by removing four nuts Rev 2 12 06 Copyright 2006 Franke Inc All rights reserved F3Dn Service
7. elay terminals as follows T1 Black from capacitor T2 Red from compressor T4 Black from capacitor White from power cord and White from compressor T5 Black from power cord and Black from compressor 15 Replace metal electrical box cover Test operation of Compressor by 16 Plug in unit to a 120 volt power source 17 Turn ON unit at Main Power ON Switch 18 If compressor starts and runs proceed to Step 19 19 Reattach sloped compressor access panel and control panel and return F3Dn to normal operating position For Technical Support Call 800 537 2653 Photo 1 Remove two control panel screws and four screws on the sloped panel to access compressor compartment Photo 2 Pull metal cover off electric component box to access capacitor and relay Photo 3 Try replacing the capacitor first If replacement of the capacitor does not start the compressor replace the start relay Rev 2 12 06 Copyright 2005 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 5 FRANKE 4 5 Check System Refrigerant Pressure and Electronic Leak Detection Roll F3Dn unit out to disconnect power at outlet Pull plug Using a medium Phillips screwdriver remove two screws securing control panel and the four screws on the sloped access panel Older units Remove wire form top grate Using a standard manifold refrigeration gauge confirm the following pressure
8. h lf compressor starts and brings the Freezer compartment down to the normal operating temperature range of 0 to 10 F 18 to 23 C proceed to Step 13 Replace black foam insulation enclosing the expansion valve and sensor to minimize condensation Secure insulation with electrician s tape Replace sloped access panel and control panel and return F3Dn dispenser to normal operating location Photo 1 me k Ls j aa J r 7 p gt aa pm J 1 es e ia i Remover control panel screws and four screws on the sloped panel to access compressor compartment Photo 2 Recover any residual refrigerant and ensure line pressure is zero before opening system Photo 3 a continuous Nitrogen charge to keep contaminants out gt Rev 2 12 06 Copyright 2006 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 8 INKE 4 8 Condensing Unit Replacement Gea 110V 60Hz use P N 19000359 230V 50HZz use P N 19000453 1 Roll F3Dn unit out to disconnect power at outlet 2 Using a medium Phillips screwdriver remove two screws securing control panel and the four screws on the sloped access panel ley Remove the two Condenser 3 Using a 7 16 11 mm box wrench or socket remove the Assembly base mounting bolts two Condenser Assembly base mounting bolts 4 Unplug the compressor power cord at the Main Electric Photo 2 Supply junc
9. hese steps correct problem notify unit manager of problems noted with crew cleaning or operator preventative maintenance If problem persists see Troubleshooting Guide and Sections 3 8 and 4 2 4 9 PROBLEM The Freezer will not run when turned ON 1 Verify unit is plugged in to correct voltage power supply 2 Check circuit breaker for that outlet or use a test meter to verify power at outlet 3 Ifthese simple steps return unit to service notify unit manager of fix 4 If unit is plugged in turned on and power is present at the outlet but Refrigeration System will not power up see Troubleshooting Guide and Sections 4 4 through 4 9 For Technical Support Call 800 537 2653 Photo 1 To inspect condenser coil and coil filter remove louvered access panel on right side near unit top Photo 2 Inspect the condenser coil filter If dirty wash in the sink and allow to dry before replacing Rev 2 11 06 Copyright 2006 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 2 FRANKE Photo 1 4 2 Freezer Thermostat Controller Replacement 10 11 12 120V 60Hz use Part No 19000652 230V 50Hz use Part No 19000853 F3Dn Dispenser should be OFF and the freezer compartment fully defrosted before proceeding Disconnect power at outlet Pull plug Using a medium Phillips screwdriver remove two screws from top of front control panel and four screws securing the slo
10. ont control panel amp four screws that secure sloped access panel Remove press fit knob hex mounting nut two cable harnesses amp three wire connectors to pull thermostat Photo 3 a ar i ar TS ii F i i I 5 Li Unit ships from factory with thermostat preset at 5 Dial range is from 1 to 9 Rev 2 11 06 Copyright 2006 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 3 FRANKE 4 3 Condenser Fan Motor Replacement 10 11 12 13 115V 60Hz use P N M40045 CA27 E8 230V 50Hz use P N M4Q045 CF13 A7 Roll F3Dn unit out and disconnect power at outlet Pull plug lf needed position a stepladder or stable work platform to access the compressor condenser compartment Using a medium Phillips screwdriver remove two screws securing the front control panel and the four screws on the sloped matt black access panel Lift off and remove metal cover over the black metal relay capacitor box mounted behind the compressor Disconnect the three Condenser Fan Motor wires from the terminal block using needle nose pliers Wire colors are Blue Brown Green Using a 3 8 10 mm wrench or socket remove the four lock nuts securing motor fan assembly to condenser mounting frame Using a 1 8 3 mm Allen wrench loosen setscrew securing fan blade to motor shaft Using the 3 8 10 mm wrench or socket remove the four lock nuts securing motor to fan gu
11. ped access panel The Danfoss Controller is mounted to the side of an electric chase has a knob graduated 1 9 three connected wires and two cable assemblies Remove the press fit knob from the controller Using a small pliers or adjustable wrench remove the hex nut holding controller to the side of metal chase Disconnect the two cable assemblies from the controller Label then disconnect the three wires from the controller terminals Place new controller near chase and reconnect the three wires to the 1 6 mm spade terminals per your labels Reconnect cable assemblies from the LED Display and the remote sensor Connectors are different and can only be assembled one way Position new controller inside electric chase and tighten hex nut securely but DO NOT over tighten Using the screws previously removed re install electric chase cover Replace press fit controller knob Verify the new thermostat is set between 4 5 Test Operation of new thermostat controller by 13 14 15 16 For Technical Support Call 800 537 2653 Plug in unit to power source Turn ON unit at Main Power ON Switch Allow compressor to draw unit down to its normal operating temperature range which should be between 0 and 10 F 18 to 23 C Cool down time of 1 1 2 to 2 hours is normal Close black sloped service access and front control panels and return dispenser to normal operating location Remove two screws from fr
12. s for units with 16 oz 454 gm R404A charge gt Discharge Valve 230 10 psig 16 1 Bar 80 F 27 C ambient gt Suction Valve 5 2 psig 4 1 Bar 80 F 27 C ambient lf Discharge Valve pressure is HIGH and Suction Valve pressure is LOW check for a kinked or restricted line lf a kinked or restricted line is found see Section 4 7 for Expansion Valve Filter replacement If Discharge Valve Pressure is LOW and Suction Pressure is LOW verify leak and location with an Electronic Leak Detector If existing system pressures are high enough a thorough scan with a standard leak detector may be sufficient to locate the exact location lf system pressure is too low or leak s is intermittent and difficult to detect pressurize the system with Nitrogen to an equalized MAXIMUM of 150 PSIG 10 5 Bar Use electronic leak detector or application of a soap solution to locate any and all leaks IMPORTANT Make sure the condensing unit is off when checking for leaks Air movement from the fan would inhibit the ability of the leak detector to sense refrigerant NOTE Do not use an electronic leak detector to locate leaks inside the freezer evaporator housing The foam insulation used inside the evaporator housing contains HFCs which will generate false readings Call Franke Service if you suspect a leak in this area 10 If a leak is found see Section 4 6 for Leak Repair For Technical Support Call 800 537 2653 Proced
13. tion box inside electrical chase 5 Note Recover any residual refrigerant and ensure line pressure is equalized to zero before opening the refrigeration system IMPORTANT Any residual refrigerant charge should be recovered in strict accordance with the Federal Clean Air Act Recover any residual refrigerant and ensure line pressure is zero before opening system Cut the refrigerant lines 7 Lift old Compressor out of refrigeration compartment Place new compressor in position and secure with nuts Photo 3 CAUTION Compressor weights 50 pounds Obtain help if needed to remove from refrigeration compartment 8 Clean and prepare the refrigeration line fittings then braise all the line connections 9 Note When resealing the system use a continuous Nitrogen charge to assure no contaminants enter the on u system especially when brazing When resealing the sysiem use a continuous Nitrogen charge to 10 Before recharging system pull vacuum equivalent to 30 keep contaminants out inches 760 mm of Mercury for minimum of 30 minutes 11 Recharge the system with R404A refrigerant per nameplate label specifications 12 Plug in condenser power cord at power junction box Tools Supplies Required Medium Phillips screwdriver 7 16 11 mm socket wrench Refrigerant Recovery Tank amp fittings Nitrogen Charge Tank R404A Refrigerant Tubing Cutter Brazing Torch etc Test operation of Refrigeration
14. ures Photo 1 hes f fe a i i 4 i 3 p J E Remover two control panel screws and four screws on the sloped panel to access compressor compartment e i aF Check Discharge and Suction Valve pressures using a manifold refrigeration gauge If system pressure is too low or the leaks difficult to pinpoint pressurize system with 150 PSIG 10 5 Bar of Nitrogen and use an electronic leak detector or soap solution gt Rev 2 12 06 Copyright 2005 Franke Inc All rights reserved F3Dn Service Manual Refrigeration Section 4 6 FRANKE 4 6 Repair System Refrigerant Leak 8 Roll F3Dn unit out to disconnect power at outlet Pull plug Using a medium Phillips screwdriver remove two screws securing control panel and the four screws on the sloped access panel Repair or replace refrigerant lines as needed Note Recover any residual refrigerant and ensure line pressure is equalized to zero before opening the refrigeration system IMPORTANT Any residual refrigerant charge should be recovered in strict accordance with the Federal Clean Air Act Note For larger leaks that may have contaminated the system replace the expansion valve and filter See Section 4 7 In addition the system may need to be drained completely and new Polyol Ester Oil added If required the old Polyol Ester Oil should be recovered and disposed of in accordance with Federal
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