Hussmann FNGSC-A Installation & Operation Manual Download Page 49

Page: 49 / 54

P/N 3141959_C

5-7

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

FNGSC-A Self Contained Merchandisers

REPLACING SOLENOID VALVES

Unplug the power cords before servicing.

1 . Remove product and place in a refrigerated

area . Make sure the power is off to the
case .

2 . Make sure there is no voltage in the

refrigerator . Remove rear lower panel .

4 . Remove condensate pan screws and

disconnect heater wires .

5 . Take off the condensate pan and replace

heater .

6 . Reverse the process and make sure

everything is in place .

Parts may be ordered at Hussmann’s Performance
Parts e-store:

https://parts.hussmann.com/

Call toll free: 855-487-7778
or

Required Tools:

•

Screwdriver / Philips Tip

•

1/4

Allen Wrench

•

Copper Tubing Cutter

•

Blow Torch

FNGSC8A Shown

Summary of Contents for FNGSC-A

Page 1: ...t allow untrained personnel to attempt to nd the cause The propane gas used in the unit has no odor The lack of smell does not indicate a lack of escaped gas If a leak is detected immediately evacuate...

Page 2: ...R 290 is present or even suspected do not allow untrained personnel to attempt to nd the cause The propane gas used in the unit has no odor The lack of smell does not indicate a lack of escaped gas If...

Page 3: ...ading into merchandiser These merchandisers are designed for only pre frozen products ATTENTION Merchandiser must operate for 24 hours before loading product Regularly check case temperatures Do not b...

Page 4: ...ging 2 9 Evaporation Pans 2 10 Installing Drip Piping 2 11 Drip Piping Lineup Arrangements 2 12 START UP OPERATION Changing Between Medium Low Temperature Applications 3 1 Controller Operation 3 3 LED...

Page 5: ...fied by the California State government Proposition 65 can be considered more of a right to know law than a pure product safety law When used as designed Hussmann believes that our products are not ha...

Page 6: ......

Page 7: ...inspected at our factory Any claim for loss or damage must be made to the carrier The carrier will provide any necessary inspection reports and or claim forms Apparent Loss or Damage If there is an o...

Page 8: ...FNGSC models are island spot display merchandisers Each self contained model will have two self contained units with one dual circuited evaporator FNGSC models are designed for dual temperature opera...

Page 9: ...LOOR TO REMOVE SKID Once the skid is removed the merchandiser must be lifted NOT PUSHED to reposition To remove the skid remove screws attaching skid to the merchandiser Check floor where cases are to...

Page 10: ...bove procedure Ensure merchandiser base is properly installed on case to prevent air circulation problems SEALING MERCHANDISER TO FLOOR If required by local sanitary codes or if the customer desires m...

Page 11: ...lied 6 7 Verify all electrical wiring is secured and clear of any sharp edges or hot lines Connect plugs 2 to the outlet 8 Verify the condensate drain line is properly trapped and pitched 9 Verify all...

Page 12: ...1 6 INSTALLATION P N 3141959_C U S Canada 1 800 922 1919 Mexico 1 800 890 2900 www hussmann com NOTES...

Page 13: ...nit Plug into an outlet designed for the plug Do not overload the circuit Do not use long or thin extension cords Never use adapters If in doubt call an electrician Self contained models have factory...

Page 14: ...the defrost cycle During refrigeration mode the discharge line solenoid valves RSV1 RSV2 are energized and held open allowing the gas to flow through each condenser Once the refrigerant is in a liqui...

Page 15: ...P N 3141959_C 2 3 HUSSMANN CORPORATION BRIDGETON MO 63044 2483 U S A FNGSC A Self Contained Merchandisers System Diagram Refrigeration Mode FNGSC6A System Diagram Refrigeration Mode FNGSC4A...

Page 16: ...SYSTEM FUNCTIONALITY Continued During defrost mode the defrost solenoid valves HGSV1 and HGSV2 are energized and held open allowing the gas to be redirected through each evaporator inlet The evaporato...

Page 17: ...3141959_C 2 5 HUSSMANN CORPORATION BRIDGETON MO 63044 2483 U S A FNGSC A Self Contained Merchandisers System Diagram Defrost Mode Hot Gas Bypass FNGSC6A System Diagram Defrost Mode Hot Gas Bypass FNGS...

Page 18: ...ion of the coil Once the refrigerant passes through the evaporator refrigerant goes out to the suction line to the compressor The discharge line runs through the evaporation pan to increase the water...

Page 19: ...Parts Website https parts hussmann com Only Hussmann or factory trained technicians should service or repair this R 290 propane equipment Failure to follow instructions can result in an explosion dea...

Page 20: ...hey are replacing No open flames cigarettes or other possible sources of ignition should be used inside the building where the units are located until the qualified service technician and or local fir...

Page 21: ...to avoid the potential for static build up Extreme care must be taken not to overfill the refrigeration system After charging carefully disconnect the hoses attempting to minimize the quantity of ref...

Page 22: ...t the water from the evaporator goes to each evaporation pan Check that the case is level The case must be level to ensure proper operation of the evaporation pan s NOTE All lower base panels must be...

Page 23: ...AUSE AN AIR LOCK AND PREVENT DRAINING 3 Pitch the drip piping in the direction of flow There should be a minimum pitch of 1 4 in per ft 20 mm per 1 m 4 Avoid long runs of drip piping Long runs make it...

Page 24: ...isers Illustrations are for reference only Piping may vary with location and access to hub drain s Each merchandiser waste outlet must be individually piped to a hub drain if 1 4 in drip piping pitch...

Page 25: ...the POWER key or by time out The word run will appear on the display screen Figure 4 If operation is successful the display will show YES Figure 5 if not it will show NO After that display will start...

Page 26: ...ration symbol Blue snowflake and dEF at the same time the system is in the pull down stage after ending the defrost cycle This dEF lasts until the set point is achieved Once this happens the discharge...

Page 27: ...b The interior light will illuminate 2 After the control preprogrammed time delay of up to 6 minutes the compressor and evaporator fan s will start if the control is calling for cooling 3 The control...

Page 28: ...on Defrost active Blinking Activated manually or from Digital Input OFF otherwise 3 Fans Permanently on Fans active OFF otherwise 4 Reduced SET Economy Permanently on Energy Saving active Blinking Red...

Page 29: ...Pressed and released Press for at least 5 secs Start up 1 Scrolls through menu items Increases values Activates the Manual Defrost function from outside menus 2 Scrolls through menu items Decreases v...

Page 30: ...probes connected to the device press the set key and enter the Machine Status menu then press the key again when one of the probe related labels Pb1 Pb5 press the set key again The value measured by t...

Page 31: ...rs in this location If for any reason the sensors are removed they need to be placed in the original location DISCHARGE SENSOR PN 3023554 SECURE WITH CLAMP SCREW 8 18X12 HX DEFROST SENSOR SECURE WITH...

Page 32: ...REW SLFDRILL 8 18X12 HX ADD 0399150 GASKET CHANNEL TO SHAPR EDGES LOCATE DISCHARGE SENSOR ON THE LEFT SIDE DIMPLE 3023554 SENSOR NTC 4 METER GREEN B DETAIL B 0257404 TUBE 3 8 ID VINYL TO PROTECT SENSO...

Page 33: ...SS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES REVISION HISTORY REV ECN DATE REVISION DESCRIPTION REV BY CHKD BY A A ECN NPD 0004536 2021 07 05 RELEASED FOR PRODUCTION VRS OSS A DETAIL A SECURE DISCH...

Page 34: ...NSF 7 Type 1 Model Application Product Application Discharge Air Temperature Tripping Dif F Controller Set Point F Defrost Frequency per day Type of Defrost Temp Termination Failsafe Time min AP1 Med...

Page 35: ...tinues is not disrupted STOCKING Product should NOT be placed inside the merchandisers until merchandisers are at proper operating temperature Allow merchandiser 24 hours to operate before loading pro...

Page 36: ...ssible locations It is the responsibility of the purchaser user to determine the location within the food storage area of the unit that best meets the code requirements above The thermometer may need...

Page 37: ...eaners on acrylic parts Solvent oil or acidic based cleaners on any interior surfaces Do not use high pressure water hoses Do not flood merchandiser with water NEVER INTRODUCE WATER FASTER THAN THE WA...

Page 38: ...be cleaned with a vacuum cleaner Soap and water may be used if all water is removed from the louvers cells before replacing Be careful not to damage the honeycomb 1 Remove screws to release retainer M...

Page 39: ...ils should be cleaned at least once per month Additional cleaning may be needed depending on the operational environment A dirty condenser blocks normal airflow through the coils Airflow blockage incr...

Page 40: ...ing temperatures CLEANING EVAPORATION PAN The condensate water outlet for self contained models empties into a limited capacity evaporation pan Debris or dirt accumulation inside the condensate evapor...

Page 41: ...the unit Heat and air registers fans and doors etc x Check for water leaks x Clean evaporator coil s and fan blade s Do not use an acid base cleaner Rinse off any cleaner residue x Clean discharge air...

Page 42: ...4 6 INSTALLATION P N 3141959_C U S Canada 1 800 922 1919 Mexico 1 800 890 2900 www hussmann com NOTES...

Page 43: ...o voltage in the refrigerator Remove pan displays to have access to the evaporation section as shown below 3 Remove motor screws as shown below 4 Take off motors from assembly and disconnect harness 5...

Page 44: ...Applies only for FNGSC4 and FNGSC8 Unplug the power cords before servicing 1 Remove product and place in a refrigerated area Make sure the power is off to the case 2 Make sure there is no voltage in t...

Page 45: ...t to motor blade assembly 9 Change failed part 10 If the only damaged part is the motor remove blade 11 Reverse the process and make sure everything is in place and working FNGSC4A FNGSC4 Shown GDF 3...

Page 46: ...to Page 2 6 Steps to Recover Refrigerant 4 Remove welded joints that connect the condensing units and the evaporator 5 Slide out the condensing unit completely Be careful using the condensing unit ba...

Page 47: ...efrigerator Remove pan displays to have access to the evaporation section 7 Take off compressor screws 8 Remove welded joints to the compressor and replace with new compressor 9 Reverse the process an...

Page 48: ...g B Be careful using the condensing unit base to pull it out Make sure not to stress or interfere with other parts 3 Remove front lower panel and take off the electric enclosure box cover 4 Disconnect...

Page 49: ...ere is no voltage in the refrigerator Remove rear lower panel 4 Remove condensate pan screws and disconnect heater wires 5 Take off the condensate pan and replace heater 6 Reverse the process and make...

Page 50: ...ault components by blinking a LED inside the box in different patterns Basically it indicates if there is a problem with compressor CF10B Inverter or Thermostat The table below describes the failure m...

Page 51: ...P N 3141959_C 5 9 HUSSMANN CORPORATION BRIDGETON MO 63044 2483 U S A FNGSC A Self Contained Merchandisers FNGSC A Visual Depiction on Non Incendive Replacement Parts Main Switch...

Page 52: ...rm 4 Refrigerant over charge 5 Low voltage compressor cycling on overload 1 Short of refrigerant 2 Inefficient compressor 3 Coil iced up 1 Defective control 2 Control sensing element not in positive c...

Page 53: ...d incorrectly 3 Water collection tray is sealed incorrectly 4 Water collection tray overflows Inside the cabinet 1 Fans do not work in the evaporator 2 Sdef probe is detached 3 Air currents that alter...

Page 54: ...information or other support contact your Hussmann representative Please include the model and serial number of the product Hussmann Corporation Corporate Headquarters Bridgeton Missouri U S A 63044 2...

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