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Check Set Point Temperature; it # 1 is the warmest and # 9 is the coldest –

set typically between 4 & 5 – adjust accordingly – control has a minimum run

time of 5 minutes and a maximum run of 60 minutes.

Supply Air Temperature – Press & Hold Down (Defrost) immediately

followed by Up (Power) – You must keep them both held to see the

temperature.

Check the return air grill inside unit for obstructions as.

Check that the top air discharge diffuser is not blocked with dust or debris.

The airflow should be approximately 200 fpm.

Check that the condenser air inlet and condenser air outlet are not

restricted.

Check that all evaporator fan motor and blades are working as they should.

Check that the condenser fan motor and blade are working as they should.

Check that the evaporator is clear and not obstructed with ice or debris

Check TXV bulb installation is secure and insulated.

Check that superheat is between 8°F to 12°F

If equipped, check sight glass for flashing and/or low charge.

Compressor Is Not

Operating

Check the control to see if the unit is calling for cooling.

Low pressure cutout will keep compressor from engaging even if the

electronic unit controller is calling due to low charge.

Check for power in and out of pressure control as both Low and High side

pressure cutout will keep compressor from engaging.

Check power at the compressor as the condenser fan motor is wired to run

100% of the time.

Head Pressure Too High

Check that the condenser coil is not restricted.

Check that the condenser filter is not restricted.

Check that condenser fan motor is working and the condenser fan is not

damaged.

Check that refrigerant is not overcharged.

Check the sub-cooling.

Check that the service valves are fully open.

Head Pressure Too Low

If equipped, check the sight glass for flashing

Check unit for refrigerant leaks.

Perform pump-down procedure to verify the valves are pumping.

Low Suction Pressure

If equipped, check

if sight glass is flashing or showing low charge.

Check that evaporator fan motors are working.

Check that the air flow is being directed through the evaporator coil. (All

interior panels and must be in place as well as the evaporator fan shroud.)

Check that the Evaporator Coil is clear of ice and debris.

High Suction Pressure

Check for refrigerant being overcharged.

Check for refrigeration restrictions.

Perform pump-down procedure to verity the valves are pumping.

Содержание 90 Series

Страница 1: ...S Italian Glass New Bakery Series 90 ITR ITG CGR SGR SN Market Series SQ RSSM NSSM RSSD RSSL 28 29 Water on the Floor 30 31 32 33 Stand Alone RSS and Hybrid CD RSS RSS Confection FCC FCCR 34 35 38 40...

Страница 2: ...the decorative back panel during transit Check that the light switch is on Shelf lights lamp cord must be fully seated into receptacle gently tap them in with a rubber mallet if needed to make full c...

Страница 3: ...es and condensing unit for vibration Check compressor for any abnormal noises Lights Not Working Check that the light switch is on Shelf lights lamp cord must be fully seated into receptacle gently ta...

Страница 4: ...light switch is on Shelf lights lamp cord must be fully seated into receptacle gently tap them in with a rubber mallet if needed to make full contact Check that the lamp cord is plugged into the end...

Страница 5: ...on Check compressor for any abnormal noises Lights Not Working Check that the light switch is on Shelf lights lamp cord must be fully seated into receptacle gently tap them in with a rubber mallet if...

Страница 6: ...e LED light strip Replace light if necessary Check power AC input voltage at LED driver Check to DC output voltage at LED driver If no output disconnect output from unit wiring harness and try again a...

Страница 7: ...rd is plugged into the end of the LED light strip Replace light if necessary Check power AC input voltage at LED driver Check to DC output voltage at LED driver If no output disconnect output from uni...

Страница 8: ...n Check compressor for any abnormal noises Lights Not Working Check that the light switch is on Shelf lights lamp cord must be fully seated into receptacle gently tap them in with a rubber mallet if n...

Страница 9: ...acle gently tap them in with a rubber mallet if needed to make full contact Check that the lamp cord is plugged into the end of the LED light strip Replace light if necessary Check power AC input volt...

Страница 10: ...both can result in temperature issues as the evaporator coil ices up and restricts airflow Check that the condenser air inlet and outlet are not restricted If equipped check condenser coil filter is...

Страница 11: ...maximum defrost duration as well as a 30 minute minimum between defrosts Freezing Product Adjust temperature control to a warmer set point 1 Warmest 9 Coldest For electronic control only verify 10KOh...

Страница 12: ...frigerant is not overcharged Check the sub cooling Check that the service valves are fully open Head Pressure Too Low Check unit for refrigerant leaks Perform pump down procedure to verify the valves...

Страница 13: ...fied 230V DO NOT CONVERT TO LED BULBS AS THE CASE WILL NOT REACH TEMPERATURE Unit must be preheated prior to placing product into case Product temperature entering the case has to be at least 170 F or...

Страница 14: ...Food Too Warm Adjust thermostat to a cooler setting outside of peak serving periods while maintaining proper product temperature REFER TO THE OWNER S MANUAL FOR MORE DETAIL 13...

Страница 15: ...t the condenser coil is clean Warm Product Check that thermostat is on Check for proper power at the compressor Adjust thermostat accordingly the coldest setting is 9 Check TXV bulb installation is se...

Страница 16: ...r refrigerant leaks Perform pump down procedure to verify the valves are pumping If equipped check if sight glass is flashing or showing low charge Low Suction Pressure Check unit for refrigerant leak...

Страница 17: ...ait 10 seconds and power the unit back on If error is still present ensure all heater cords are fully seated into their receptacles Verifying Shelf Temperature On Controller To Temporarily See the Cur...

Страница 18: ...60 KOhm sensor chart Temperature Is Too High Decrease control set point Check the control for errors and contact service Use supplied food rack to reduce heat intensity on food Ohm out probe to verify...

Страница 19: ...ate a wall all of the way around the shelves to create a barrier keeping the cold air inside of the unit The product should be a minimum of half an inch off the tower to allow supply air to circulate...

Страница 20: ...armest and 9 is the coldest set typically between 4 5 adjust accordingly control has a minimum run time of 5 minutes and a maximum run of 75 minutes self contained units and 60 minutes remote condensi...

Страница 21: ...e service valves are fully open Head Pressure Too Low If equipped check the sight glass for flashing Check unit for refrigerant leaks Perform pump down procedure to verify the valves are pumping Low S...

Страница 22: ...condenser coil is clean Non refrigerated cases do not regulate internal temperature and may be slightly higher than ambient temperature due to lighting in the unit or direct sunlight Mechanical Thermo...

Страница 23: ...eck is the cold zone Cold Zone only 7 of the interior floor near the rear of the case and extends down to 3 at the front of the case by the customer Products above this load line will be in an unsafe...

Страница 24: ...has its own mechanical thermostat which can be turned off and adjusted individually Each food well has its own mechanical thermostat which will control them individually Check that the slots along th...

Страница 25: ...and restricts airflow Check that the condenser coil is clean Non refrigerated cases do not regulate internal temperature and may be slightly higher than ambient temperature due to lighting in the uni...

Страница 26: ...Products above this load line will be in an unsafe temperature zone and disrupt the cold zone causing it to struggle as well Verify 10KOhm NTC sensor is reading properly Check that the condenser air i...

Страница 27: ...to be operated with the rear doors in place but they may be removed during peak times The display will not read accurately with the rear doors removed for extended periods of time Food In Well Not Hel...

Страница 28: ...is working Check the placement of the humidity pan which is located underneath the interior display deck for proper positioning or potentially missing from being removed during cleaning Check the flo...

Страница 29: ...circulate and not freeze product at the back wall Some items may need more clearance if they are sensitive to freezing as supply air temperature should get below freezing If equipped check that conden...

Страница 30: ...mpressor from engaging even if the electronic unit controller is calling due to low charge Check for power in and out of pressure control as both Low and High side pressure cutout will keep compressor...

Страница 31: ...ans or main doors Also avoid locations where the unit is subject to high humidity such as near cases with water misting or fogging devices Check Ambient Conditions of the Location Most of our cases re...

Страница 32: ...tank by pushing tabs located on tank sides away from the deck while lifting on pump cover Periodically inspect the condensate pump tank to assure it is free of accumulated dirt or sludge DO NOT use so...

Страница 33: ...ity of heating ducts grills radiators ceiling fans or main doors Also avoid locations where the unit is subject to high humidity such as near casesn with water misting or fogging devices Check Ambient...

Страница 34: ...d on tank sides away from the deck while lifting on pump cover Periodically inspect the condensate pump tank to assure it is free of accumulated dirt or sludge DO NOT use solvent cleaners Clean tank w...

Страница 35: ...t is subject to high humidity such as near cases with water misting or fogging devices Check that the drain trap s assembly did not become dislodged during shipment or installation and that it is corr...

Страница 36: ...may be removed for cleaning or replacement by unscrewing with a 9 16 wrench Clean Inlet and outlet piping Reassemble system and check for correct operation Condensation On The Center Tower Check Ambie...

Страница 37: ...ight and close proximity of heating ducts grills radiators ceiling fans or main doors Also avoid locations where the unit is subject to high humidity such as near cases with water misting or fogging d...

Страница 38: ...re it is free of accumulated dirt or sludge DO NOT use solvent cleaners Clean tank with soap and warm water only Check valve may be removed for cleaning or replacement by unscrewing with a 9 16 wrench...

Страница 39: ...nlight and close proximity of heating ducts grills radiators ceiling fans or main doors Also avoid locations where the unit is subject to high humidity such as near cases with water misting or fogging...

Страница 40: ...l properly diagnosed and repaired be sure to follow these procedures Use of a wet dry shop vacuum is recommended to remove excess water from both the floor and condensate pan as well as the interior o...

Страница 41: ...densing fogging the glass and running down and out the units drain The bucket needs to be emptied and cleaned as needed to avoid overflowing and or growth of mold Floor Drain Floor Drain Note Owner Re...

Страница 42: ...proximity of heating ducts grills radiators ceiling fans or main doors Also avoid locations where the unit is subject to high humidity such as near cases with water misting or fogging devices Check A...

Страница 43: ...lean the pan and float of debris to see if it will float if not replace the condensate pan float assembly and or heater accordingly If equipped check that condensate pan or pump is properly plugged in...

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