Service Manual ETL Blast Chiller Series
Contents
1. 60 WIRING 3 PHASE UNITS SELF CONTAINED uuu een 61 WIRING 3 PHASE UNITS WITH REMOTE CONDENSOR 62 BLAST CHILLERS 8 Customer Service 800 333 5653 www thermalrite com Thermal Rite Alarm Failure List A CHILLERS Thermal Rite ETL Blast Chiller Service Manual Section 1 Basic Service Information The Controller will display alarms and failure codes that will assist in identifying the cause of a problem and direct attention to the components and circuits involved In addition a diagnostic service menu allows technicians to quickly check the temperature sensors such as the needle probe the chamber probe or the evaporator probe Ero Chamber Probe Failure Does not allow unit to cycle If running cycle will stop Bm Fvaporator Probe Failure During storage cycle evaporator fans do not run Needle Probe Failure Does not allow a needle probe set temperature cycle to run Unit will stop if running on needle probe set temperature cycle High Discharge Pressure or Low Unit will not operate in any cycle If running compressor ouction Pressure 1 evaporator and condenser fans will stop Door is Open for More than P39 Compressor and condenser fan will stop Evaporator fan Will cycle according to P37 Key Pad Control Module None Communication Error 2 Power Failure During Cycle Cycle will restart when power is restored Message will flash to indicate cycle2. ket e dtm gp Z amp 5E IN yom AR t BLAST CHILLERS 60 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Wiring 3 phase Units Self contained ELECTRICAL BOX LLI S aS DE 21 22 ex PS aon AWG 18 DISPLAY KEYBOARD lt J MAGNETIC DOOR SWITCH 91 DMV CAPACITOR AWG 18 09 JO 9 yp 1 ol Jo d Z ol lo D a a c 5 2 E 3 ul GO oO E or a O oi P ZEN Y a NY Pd LLI A S am Le E CC LU OI O a O z o O Pa LLI COMPRESSOR O CONDENSER FAN MOTOR AWG 14 CAPACITOR qe e vL OMV we Ss mg Y TM YL OMY fj vL OMV ae vLOMV A t BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 61 ETL Blast Chiller Service Manual Wiring 3 phase Units with Remote Condensor 62 ELECTRICAL BOX PRESSURE SWITCH RT Jp ET E TIEISIETSITIS hol t T2 13 14 15 16 211 122 PS MAGNETIC DISPLAY KEYBOARD AWG 18 EVAPORATO 10 X FAN MOTOR OD AWG 16 91 DMV ie E O O lt x lt x LLI Ed OC LU L rT LLI OI O a CONDENSER 2 X FAN MOTOR OD ex vL OMV ma ms zm ne E vL DMY PRONN Customer Service 800 333 5653 www thermalrite com AA CHILLERS Thermal Rite ETL Blast Chiller Service Manual NOTES
3. Mount the probe into position Replace any wire ties 10 Reinstall the guard BLAST CHILLERS 46 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Replacing the Evaporator Defrost Probe Temperatu FE DefrostProbe Bulb Defrost Probe Cable Sensing Probes continued 1 Remove the insulation 2 Remove the aluminum tape 3 Cut and remove the plastic mounting tie 4 Cut off the probe bulb and all wire ties 5 Attach the wires from the replacement probe wires to the wires of the existing probe 6 From the controller side pull the wire of the existing probe to route the new probe wires correctly 7 Attach the wires to the Main Board 8 Mount the probe into position 9 Replace any wire ties 10 Replace the aluminum tape 11 Reinstall the insulation BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 47 ETL Blast Chiller Service Manual Replacing the Needle Probe Temperatu re Needle Probe Element Needle Probe Cable Port Sensing Probes continued N 1 Cut off the probe s bulb 2 Remove the probe wires from the main control terminals 3 Attach the wires from the replacement probe wires to the wires of the existing probe 4 From the controller side pull the wire of the existing probe to route the new probe wires correctly 5 Attach the wires to the Main Board Replacing the Evapo
4. Frame Heater continued Replacing the 1 Disconnect the power supply Relay Board 2 Markand remove all wires 3 he board is mounted with 6 plastic clips Squeeze the tabs of each clip and remove the board BLAST CHILLERS 52 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Replacing the 4 inser replacement board on clips press down to snap in place Relay Board 5 Rewire according to the wiring marking and wiring diagram continued 6 Ensure all parameters are set correctly see Parameter List page XX Replacing the 1 Remove the front panel see page 29 Keypad 2 Disconnect the wiring harness 3 Remove the mounting nuts lock washers and flat washers Mounting stuc Mounting nut Flat washer Lock washer 4 Remove the board from the mounting studs 5 Install replacement board by reversing the above procedure e BLAST T CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 53 ETL Blast Chiller Service Manual Vacuum and WARNING Before performing any service that involves electrical connection Charg ng Procedure disconnection and or exposure to electrical components always follow the Electrical LOCKOUT TAGOUT Procedure Disconnect all circuits Failure to comply can cause property damage injury or death Always perform a vacuum and charging procedure when any of the following actions have been done e
5. I CABINET TEMPERATURE ALARMS temperature below which the minimum temperature alarm is activated during post chill storage with relation to P7 i e P7 P64 with reference to the cabinet probe 0 no alarm me O C U c Su temperature above which the maximum temperature alarm is activated during post chill storage with relation to P7 i e P7 P65 with reference to the cabinet probe 0 no alarm temperature below which the minimum temperature alarm is activated during post freezing storage with relation to P8 i e P8 P66 with reference to the cabinet probe 0 no alarm T temperature above which the maximum temperature 7 alarm is activated during post freezing storage with relation to P8 i e P8 P67 with reference to the cabinet probe 0 no alarm ME TEE U c co enable printing YES print interval HACCP alarm list deletion L YES U Y o Baud rate 0 2400 1 4800 2 9600 3 19200 Bit polarity no polarity 1 even 2 0dd Board address U Y O1 U Y D ad BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite Service Menu Configuration Parameters continued COR PEST ThermalRite ETL Blast Chiller Service Manual Temperature Probe Display To check the reading of the unit s temperature sensing probes first make sure the unit is in the OFF mode 1 Press the NEEDLE PROBE key and the DOWN arrow
6. Replacement of compressor e Replacement of solenoid valve body e Replacement of condenser e Replacement of evaporator e Replacement of thermal expansion valve e Replacement of liquid receiver or oil separator e Replacement of a filter e Leak repair e Replacement of tubing e Any action that involves opening the refrigeration system NOTE Always replace the filter drier before beginning a vacuum and charging procedure NOTE Refer to Data Chart for correct amount of refrigerant for each model NOTE Ensure all refrigerant is recovered before pulling a vacuum on the system For the best results pull the vacuum form more than one point in the system Pi t BLAST CHILLERS 54 Customer Service 800 333 5653 www thermalrite com Thermal Rite Vacuum and Charging Procedure continued X CHILLERS Thermal Rite ETL Blast Chiller Service Manual Vacuum and Charging Instructions Self Contained Models Attach vacuum pump to the compressor check pressure valve and liquid receiver valve shown Liquid receiver valve Compressor check pressure valve Remote Models Attach vacuum pump to the compressor check pressure valve and liquid receiver valve shown above A split evaporator unit is also equipped with one or more additional valves that can be used to pull a vacuum and charge the system This valve can be used to pull a vacuum in the evaporator unit in two ways Pull a vacuum in the
7. Service Manual WARNING If the receptacle is not the proper grounding type contact an electrician Do not remove the grounding prong from the plug Failure to comply with this procedure can cause property damage injury or death A WARNING Before performing any service that involves electrical connection or disconnection and or exposure to electrical components always perform the Electrical LOCKOUT TAGOUT Procedure Disconnect all circuits Failure to comply with this procedure can cause property damage injury or death WARNING Before removing any sheet metal panels always perform the Electrical LOCKOUT TAGOUT Procedure Be sure all circuits are disconnected Failure to comply with this procedure can cause property damage injury or death 44 WARNING Do not operate this equipment without properly placing and securing all covers and access panels Failure to comply with this procedure can cause property damage injury or death 44 WARNING Do not use or store gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance Failure to comply can cause property damage injury or death A WARNING In the event of a power failure do not attempt to operate this appliance Failure to comply can cause property damage injury or death General Safety 44 WARNING ThermalRite accepts no responsibility for any situation resulting from work carried out in an unprofessional manner or from the incorrec
8. entire system with the condensing and evaporating units connected and recharge the entire system Because these units are equipped with self closing quick connections the condensing section can be separated A vacuum can be pulled and refrigerant can be charged in this section A vacuum can then be pulled on the evaporator section Connect both suction and liquid lines to the evaporator to pull a vacuum into them as well Once the system has been pumped down simply connect the lines to the condensing unit that has already been charged Connecting line Quick connections gt Quick connections evaporator side condensor side Top of cabinet Condensor box Unscrewing quick connections Customer Service 800 333 5653 www thermalrite com 55 ETL Blast Chiller Service Manual 56 Vacuum and This last option is very helpful if only one side of the system is to be opened for Charging Procedure repair For example if a compressor needs to be replaced its not necessary to open the entire system Simply disconnect the lines at Lc amp Sc to remove continued the compressor Vacuum and Charging Recommendations e Use a vacuum pump rated at 50gpm minimum e Pull the vacuum for 1 hours minimum e Replace the filter drier whenever the system has been opened am T BLAS CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite Appendices mad CHILLERS Thermal Rite ETL Blast Chille
9. fan 0 no effect 1 the evaporator fan will be switched off GROUP DIGITAL INPUTS ELE P38 1 microport input contact type 1 0 NA input active with contact closed 1 NC input active with contact open P39 min ooo micro port input alarm delay 00 P40 1 high pressure input contact type 1 0 NA input active with contact closed 1 NC input active with contact open P42 low pressure Input contact type 0 NA input active with contact closed 1 NC input active with contact open P43 min 0 low pressure input alarm delay 00 P44 compressor thermal protection input contact type 0 NA input active with contact closed 1 NC input active with contact open A BLAST CHILLERS 12 Customer Service 800 333 5653 www thermalrite com Thermal Rite Service Menu Configuration Parameters continued A CHILLERS Thermal Rite ETL Blast Chiller Service Manual U dy O O CONDENSER FAN condenser fan activity in the absence of the condenser probe P61 0 0 in parallel with compressor on CODE U O M GBC DESCRIPTION GBF P45 min 0 compressor thermal protection input alarm delay 00 enoue CABNETSTEMUSNIN UV light on duration duration of cabinet sterilisation P47 je needle probe heating end temperature with 99 reference to the needle probe P48 sec maximum duration of needle probe heating 15 CA EN DOOR ELEMENTS P49 E 41 the temperature below which the door elements ar
10. is located in the condensing unit The board has 10 outputs 10 relays as shown below he relays control various components shown in the table below Depending on the unit s voltage rating each load is directly connected to either L1 or Neutral L2 is switched by the dedicated relay Customer Service 800 333 5653 www thermalrite com 25 ETL Blast Chiller Service Manual 26 Main Board continued Testing Relay Outputs When a particular component is not working the component itself may not be faulty Knowing the logic and outputs of the Main Board will allow you to troubleshoot the root cause The relays will activate and deactivate according to the logic sequences of the controller To test an output disconnect the input line to the relay and the output line to the component For example To check K10 disconnect the wires on terminals 19 and 20 on the Main Board Ohm out the relay between those terminals If the contact opens and closes appropriately with the logic of the board it is working correctly If a relay s contacts remain open or closed constantly the relay has failed and the Main Board must be replaced U1 O j m DN wa OO o E 9 L 8 7 6 gt LI 4 l 3 Lj 2 10 10 Load 8 Load 7 Load 6 11 Load 4 Load 2 Load 1 Line BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite Keypad Refrigerant
11. key together and hold for five 5 seconds 2 loscroll through the reading use the UP or DOWN arrow key DISPLAY PROBE Needle Probe Fvaporator Probe Valuable information can be obtained by checking the evaporator probe when the unit is struggling to reach the cabinet temperature setpoint i e A0 F This may indicate that the evaporator coil is not being supplied with sufficient refrigerant With a cabinet setpoint of 40 F the actual evaporator temperature is approximately 49 F at 0 PSIG In this case the controller evaporator probe reading MUST BE at least 42 F which is the minimum readable temperature Customer Service 800 333 5653 www thermalrite com 1 5 ETL Blast Chiller Service Manual HACCP Printer Blast Chillers can be ordered with an optional printer or one can be installed as a retrofit The printer has its own power supply connection 110VAC 240VAC 50 60 Hz The printer is connected to the Main Board at the second RS 485 connection port shown o 2 gt on y LES zJ SA Us POWER SUPPLY AS 461 47 PRINTER TERMINAL BLOCK MAIN BOARD TERMINAL BLOCK A BLAST CHILLERS 1 6 Customer Service 800 333 5653 www thermalrite com Thermal Rite HACCP Printer continued Dur 8 Min Ed Start 07 05 2012 14 51 Nr 9 ED Dur 8 Min Pri os Ed n Start 07 06 2012 14 48 i 8 HP 18 38 23 C 29 C 10 37 e9 c 23 C 10 36 23 C 29 C 1
12. magnets in each door one at the top and one at the bottom This allows the door to be reversed Foamed magnet sensor bracket Magnet sensor behind front panel When the door is closed the magnet closes a reed switch in the sensor This closes a circuit from the Main Board at terminals 48 amp 49 When the door opens the reed switch opens and the circuit to the Main Board is interrupted An alarm occurs and d r is shown in the display 49 9 SW1 48 rM Checking the Door Switch If the magnetic sensor is faulty or if the wires are broken or shorted the display will show d r continuously To check the switch disconnect the wires from the Main Board at terminals 48 amp 49 Ohm out the switch between the two wires The switch should be closed when a magnet is present and open when it Is not If the switch tests OK check for corroded loose or missing connections on the terminals If no problem is found in the switch or wires replace the Main Board Customer Service 800 333 5653 www thermalrite com 23 ETL Blast Chiller Service Manual 24 Pressure Switch here is a pressure regulating switch installed to prevent compressor failures or Improper operation due to high discharge pressure or low suction pressure Capillary tubes Pressure Switch Differential High Low Cutout Pressure Scale Pressure Switch Working Principles The pressure switch has normally closed contacts that will
13. open if the High or Low pressure limits are exceeded The switch is connected to the Main Board at terminals 48 amp 50 48 is a shared connection with the door switch When the pressure switch opens from either a high or low pressure condition the display will show the error code hP Y _ switch cables Once the pressures return to the normal range the pressure switch will reset automatically Pressure Switch Factory Setting The factory setting for the pressure switch Is as follows Do not change these settings e High Pressure Limit 420 psig e Low Pressure Limit 0 psig e Differential 10 psig al BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite Door Frame Heater Main Board aa TE Thermal Rite ETL Blast Chiller Service Manual Both Shock Freezer and Blast Chiller units come equipped with a door frame heater to prevent frost buildup on the door gasket The heater may be either 115V or 220V depending on the model rating For 220V 3 phase units or 220V single phase units with no neutral the door frame heater is connected between two live mains The heater runs around the frame under a plastic strip cover Electrical connections run through the lower cabinet panel to the electrical component box Heater Cable Specifications cated GER 1 4 KO 24 KO Each unit is equipped with a Main Board where the electrical components are connected In remote units this board
14. 9 35 ESTU egt 14 34 29 C 29 C START Pri Pr2 Tes 0870672012 ae Leo s UE RASS Thermal Rite 1 2 4 ETL Blast Chiller Service Manual Connect the printer to the Main Board using coaxial shielded cables he main controller must be set to recognize the printer and enable communication Set configuration parameter P71 to 1 to enable the printer port on the Main Board In addition ensure that the following parameters are set as shown Fb Wis An LED on the printer will indicate its status RED ON Press the feed key to output blank paper in either ON or OFF status Printing Alarm List To print the alarm list the controller must be in the OFF mode p Press the PROGRAM key for five 5 seconds If the printer communication has been enabled the first display shown is Prt To print the alarm code press the PROGRAM key To exit from printing press either the UP or DOWN arrow key and the alarm list will be shown in the display he controller will only save the previous 10 alarms Printed codes will be as shown Alarm duration Max Min Temperature Date Time Alarm Code Printing Cycle Data With the HACCP printer it is also possible to print data history related to the freezing and chilling cycles If the printer is left ON and a cycle is started the data will be captured Data capture frequency is set in Parameter P72 example If P72 1 device will print every minute and give t
15. A BLAS CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 63 ETL Blast Chiller Service Manual 64 Customer Service 800 333 5653 www thermalrite com A l CHILLERS ThermalRite
16. CHILLERS Thermo SS KM VIP CRES e Yd MM ASIA dada AAA LAICA SIS PR NS PR sd EK i BAD EA SSSVAAAVASVs cd PR A SOS BA O Ta O now PPP NSS DS ER SS SSS SASS DS LASTS ESSA A september 2012 II SQ ewes WSS AS ASA P Bg a PP C aaa DOOD AG 04 IES Sus EG Mt ne SSS O AE gt j NS OG RS yy J NNNSNNNNNNNSNNMNN os EG OT IO Ss S79 KK SM PG id J Ss NNNM is PA id Service Manual ETL Blast Chiller Series ETL Blast Chiller Service Manual A BLAST CHILLERS 2 Customer Service 800 333 5653 www thermalrite com Thermal Rite CHILLERS Thermal Rite ETL Blast Chiller Service Manual safety Precautions THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL MAINTAIN AND REPAIR ELECTRICAL REFRIGERATION EQUIPMENT WHO SHOULD PERFORM THE INITIAL FIELD STARTUP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL READ THIS MANUAL THOROUGHLY BEFORE OPERATING INSTALLING PERFORMING MAINTENANCE ON OR REPAIRING THE EQUIPMENT A WARNING Failure to follow all the instructions in this manual can cause property damage injury or death 44 WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death 44 WARNING Electrical connections should be performed only by a certified professional WARNING Electrical and groundin
17. GURATION PARAMETERS cee 10 Entering the Configuration Parameters 10 Parameter List Factory Setting 10 Temperature Probe Display usses 15 ELE PRINTED esse ese ee ee ee E E AI 16 FONO Alarmi E21 SU ne dns Sec N EE EE EE 17 grin bre SA 17 Replacing the printer paper ssssssse ee ee ee ee ee ee 18 SECTION 2 TROUBLESHOOTING 00 eeue ee ee Ee Ee Ee Ee ER EE Ee Ee ee Ee Ee ee Ke Ee Ee EE 19 unl ME OOR EE EE N DERE NE 19 Checking the Probes 19 Probe Resistance Graph and Chart oo ccc ee 20 Ba UI 23 Checking the Door Switch 23 PRESSURE A 24 Pressure Switch Working Principles sss 24 Pressure Switch Factory Setting sss 24 DOOR FRAME HEATER 25 Heater Cable Specifications ee ee 25 INS Do A en 29 les id FC aU OS os nerit ie ke ble SSA 26 qai 2 Keypad HOU ES OO Usen DE ass 2 REFRIGERANT PRES SURE GHEE SO corri duni sa eed pcd 2 Suction Pressure 1 5 2 DSIQu sueco mei tuns mta tod pueri ek ee 28 Discharge Pressure 230 PO asii iia 28 SECTION3 SERVICE AND REPAIR PROCEDURES ern 29 REMOVING THE FRONT PANEL oon 29 Models from GBC30SG to GBF171 1328 ie 29 Model GBF15 11 ee ee ee ee ee conan non nononcanoncinons 30 REVERSING THE DOOR SWING sesse cons ee ou ee eg ee ie oe ee od 31 7 BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www
18. Pressure Checks BLAST CHILLERS Thermal Rite ETL Blast Chiller Service Manual The Keypad is the user interface for the unit and is connected directly to the Main Board Connection on relay board Connection on keypad RS485 1 Keypad Troubleshooting Problems with the Keypad may include Ground Connection Missing Display flashes and dims Negative connection missing Display may work without specific alarm Positive connection missing Error Code Err is displayed 12V Connection missing Display does not light Keypad faulty All connections are present but display does not work High or Low refrigerant pressure levels are dependent on Ambient temperature e Heat load in the cabinet Full or Empty e Status of the cycle hot food frozen food etc e Cabinet temperature e X valve regulation e Evaporator coil air flow e Condenser coil air flow Checking the High and Low pressures on the unit alone cannot determine if the unit is operating correctly Careful analysis based on the conditions listed above Is necessary to properly diagnose a problem For example Checking the suction pressure results in a reading of 0 1 psig This could be the correct pressure if the cabinet temperature is at the minimum 40 F and the evaporator temperature is at 499F Customer Service 800 333 5653 www thermalrite com 2 ETL Blast Chiller Service Manual Refrigerant If this is not the case the e
19. e e Atemperature sensor located on the evaporator output defrost probe e Ahinged cover panel holding the fans and guards e A temperature sensor mounted to the panel cabinet probe Evaporator Assembly Description Evaporator Assembly Small Units Evaporator Assembly Large Units Cabinet probe Pa Hinged panel E NEED Nu Evaporator Assembly Components X TX Bulb Evaporator M feeding line N TAT Equalization circuit TX valve bulb capillary Fvaporator SHE 44 Customer Service 800 333 5653 www thermalrite com BLAST CHILLERS ThermalRite ETL Blast Chiller Service Manual Accessing the Evaporator Assembly continued Defrost Probe bulb Accessing the Evaporator 1 Remove the screws that attach the hinged panel BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 45 ETL Blast Chiller Service Manual Replacing the Cabinet Probe Temperature Sensing Probes od dm E tf O S Remove the metal guard ES b e d Exterior view Interior view Cut and remove the plastic mounting tie Remove the probe wires from the main control terminals Cut off the probe bulb and all wire ties Attach the wires from the replacement probe wires to the wires of the existing probe From the controller side pull the wire of the existing probe to route the new probe wires correctly Attach the wires to the Main Board
20. e 41 switched on with reference to the cabinet probe P50 oF P49 differential 4 1 Foz the temperature below which the condenser fan is switched off in the presence of the condenser probe P61 1 and on condition that the compressor is on with reference to the condenser probe see also P54 P52 differential condenser fan switch off delay on switching off the compressor in the presence of the condenser probe P61 1 see also P52 MISCELLANEOUS 3 chill and freeze cycle completion buzzer duration 3 15 maximum buzzer duration during an alarm state 15 U O1 Co P54 c CD OD GROUP SEC U di on CD ED ED P56 sec Pos Sec elapsed time between switching on the compressor 10 and pump down valve activation pump down in power up also elapsed time between deactivation of the pump down valve and switching off the compressor pump down in power down P58 defrost parameter units of measurement 0 P25 h P24 P26 P28 and P35 min P25 min P24 P26 P28 and P35 s reserved probe type ENTE U on co 1 2 PTC condenser probe enabling e WEBS U op CD C oo Customer Service 800 333 5653 www thermalrite com 1 ETL Blast Chiller Service Manual 14 Service Menu Configuration Parameters continued DESCRIPTION CONDENSER TEMPERATURE ALARMS the temperature above which the condenser temperature alarm is activated with reference to the condenser
21. e ends of the Door Swing aot continued E N x f Bottom hinge a 8 Place the plastic filler caps in the screw holes that previously held the lower hinge 9 Move the locking pin by fitting it in hole on the opposite side of the frame panel Fit pins and nylon bushings as shown Locking pin Locking pin 10 Move the C shaped bracket from the opposite side and attach with the screws but do not tighten Pay special attention to the positioning of the C shaped bracket Bottom panel frame under the door BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 33 ETL Blast Chiller Service Manual Reversing the Door Swing continued Accessing the Condensing Unit Self Contained Models 11 The correct angle of the square hole will allow proper loading of the hinge spring when the door is closed providing better sealing pressure on the gasket 12 Turn the door over and fit the upper hinge 13 Fit the bottom hinge pin into the square hole of the bracket 14 ighten the screws on both upper and lower hinges 15 Test the door for proper operation and correct seal 16 Replace the front panel Models from GBC39S to GBF171 132S 1 Remove the rear grid by unscrewing corner screws e BLAST CHILLERS 34 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Accessing the 3 Unscrew the le
22. ensing Unit Self Contained Models Models from GBC30SG to GBF44 26SP These models do not come equipped with a sliding base plate for the condensing unit All the components are mounted directly to a base plate which Is part of the unit s structure The procedure for accessing these components Is different from that for the model previously described However the first eight steps are the same 1 Remove the front panel BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Accessing the 2 Unscrew the left and right side bolts from the compressor base plate at the Condensing Unit sides of the condenser Self Contained Models mi 4 Loosen or cut the cable ties to extend the length to make clearance to slide out the compressor base ml BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 39 ETL Blast Chiller Service Manual Accessing the 5 Cuttheties that fasten the drain duct Condensing Unit Self Contained Models 6 Move the drain duct so that it will not interfere with sliding out the compressor base plate g ts i L E NW i r AN i Internal mid BLAST CHILLERS 40 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Accessing the 8 With the caps removed loosen the inner screws Do not remove them This Condensing U
23. ft and right side bolts from the compressor base plate at the Condensing Unit sides of the condenser Self Contained Models SARA ES TT Tee TS Steerer TI FERRERA RAEE es A 1 17 eer re he 5 Loosen or cut the cable ties to extend the length to make clearance to slide out the compressor base BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 35 ETL Blast Chiller Service Manual Accessing the 7 Move the drain duct so that it will not interfere with sliding out the Condensing Unit compressor base plate Self Contained Models 8 Remove the caps from the corner stainless steel angles i AA 9 With the caps removed loosen the inner screws Do not remove them This Is done at a 45 angle to the back panel BLAST CHILLERS ThermalRite 36 Customer Service 800 333 5653 www thermalrite com ETL Blast Chiller Service Manual Accessing the 10 Unscrew the outer screws and remove them completely Condensing Unit Internal hook Loosen only Self Contained Models E Insulated pipes External motherscrew 11 The cover can now be removed 12 Unscrew the right and left side bolts on the compressor base plate di BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 37 ETL Blast Chiller Service Manual 30 Accessing the 14 From the rear slide the base plate out as needed Cond
24. g connections must comply with the applicable portions of the National Electric Code and or all local electric codes Failure to comply with this procedure can cause property damage injury or death A WARNING Before connecting the unit to the electrical supply verify that the electrical and grounding connections comply with the applicable portions of the National Electric Code and or other local electrical codes Failure to comply with this procedure can cause property damage injury or death WARNING Before connecting the unit to the electrical supply verify that the electrical connection agrees with the specifications on the data plate Failure to comply with this procedure can cause property damage injury or death A WARNING UL73 grounding instructions This appliance must be connected to a grounded metal permanent wiring system Or an equipment grounding conductor must be run with the circuit conductors and connected to the equipment grounding terminal or lead on the appliance Failure to comply with this procedure can cause property damage injury or death WARNING Appliances equipped with a flexible electric supply cord are provided with a three prong grounding plug lt is imperative that this plug be connected into a properly grounded three prong receptacle Failure to comply with this procedure can cause property damage injury or death Customer Service 800 333 5653 www thermalrite com 3 ETL Blast Chiller
25. has restarted The pressure switch in this model series provides a single output open or closed The circuit is normally open and will close when either the High or Low Pressure limits are reached In effect the failure code HP could mean either high discharge pressure as well as low suction pressure N Additional troubleshooting at the Key Pad Control Module connections e No Ground connection Display flashes and or dims e No Negative connection Display may work normally without failure code e No Positive connection Failure Code Error is displayed e No 12V connection Display will not light up Customer Service 800 333 5653 www thermalrite com 9 ETL Blast Chiller Service Manual Failure Code Details Service Menu Configuration Parameters The HACCP feature provides the ability to get additional information such as failure code date of occurrence min max temperature if applicable and duration of alarm condition To access previous failure codes press and hold the PROGRAM key for 5 seconds Use the UP and DOWN arrow keys to scroll through the previous failure codes Press the PROGRAM key to exit Entering the Configuration Parameters This menu can only be accessed when the unit is in the OFF Mode 1 Press and hold the UP and DOWN arrow keys at the same time for five 5 seconds PA for password will be displayed in the upper display No password is needed 2 Press eithe
26. he following information Type of cycle start date and time Time Cabinet and Needle Probe temperatures each capture line Customer Service 800 333 5653 www thermalrite com 1 7 ETL Blast Chiller Service Manual HACCP Printer continued Legend Type of cycle Re eg O e mestdl ie tg SSCS PL 49 Programme ele Replacing the printer paper 1 Press on the printer front cover as indicated The cover will open allowing access to the paper roll 3 EVERY CONTROL A 2 Pull the paper roll to one side to remove 3 Insert the new paper roll 4 hread the paper between the rollers 5b Resetroller and close the cover BLAST CHILLERS 1 8 Customer Service 800 333 5653 www thermalrite com Thermal Rite COR ET ThermalRite Probes ETL Blast Chiller Service Manual Section2 Iroubleshooting WARNING Before performing any service that involves electrical connection or disconnection and or exposure to electrical components always follow the Electrical LOCKOUT TAGOUT Procedure Disconnect all circuits Failure to comply can cause property damage injury or death If upon first inspection the cause of a problem is not obvious a more thorough troubleshooting may be necessary The unit may need to be unplugged or otherwise removed from the power supply so the internal components can be tested The Blast Chiller is equipped with several tem
27. lves electrical connection or disconnection and or exposure to electrical components always follow the Electrical LOCKOUT TAGOUT Procedure Disconnect all circuits Failure to comply can cause property damage injury or death The Electrical LOCKOUT TAGOUT Procedure is used to protect personnel working on an electrical appliance Before performing any maintenance or service that requires exposure to electrical components follow these steps 1 In electrical box place appliance circuit breaker into OFF position 2 Place a lock or other device on electrical box cover to prevent someone from placing circuit breaker ON 3 Place a tag on electrical box cover to indicate that appliance has been disconnected for service and power should not be restored until tag is removed by maintenance personnel 4 Disconnect appliance power cord from electrical outlet 5 Place a tag on the cord to indicate that unit has been disconnected for service and power should not be restored until tag is removed by maintenance personnel Customer Service 800 333 5653 www thermalrite com 5 ETL Blast Chiller Service Manual A BLAST CHILLERS 6 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Table of Contents Page SECTION 1 BASIC SERVICE INFORMATION ees see ee erre 9 ALARM FAILURE LIST ee ee ee ee ee ee ee ee ee ee ee ee ne 9 FAILURE CODE BE E ee Se EE drets 10 SERVICE MENU CONFI
28. nit is done at a 45 angle to the back panel Self Contained Models 10 On the front side lift the cabinet up enough so the drain duct will clear the condenser coll a dd BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 41 ETL Blast Chiller Service Manual Accessing the 11 Keep the cabinet base in place and push the cabinet body from back to front Condensing Unit enough to access the components Self Contained Models Model GBF15 11S 1 Unscrew the right side panel 3 screws 2 Unscrew the back right side panel 3 screws BLAST T CHILLERS 42 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Accessing the 3 Remove the right side panel to access the condensing unit Condensing Unit i Self Contained Models rc Remote Units Models GBF440 38R and GBF837 727R Remote units have the condensing unit in a separate box lo access the condensing unit unscrew the metal top cover BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 43 ETL Blast Chiller Service Manual Accessing the All units including remote and self contained models are equipped with one Evaporator Assembly evaporator assembly consisting of e An evaporator coil e One or more evaporator fans depending on the model e A thermal expansion valve in some cases a MOP valv
29. perature sensing probes These probes are Negative Temperature Coefficient NTC thermoset sensors The chamber and evaporator probes have the same configuration NTC Probe Bulb NTC Needle Probe Types The needle probe has a different sensing element Both types of probes have the same resistance to temperature correlation Checking the Probes When a Probe alarm occurs it means there is something wrong with the sensor reading The problem may be in either the sensor wires or the sensor itself Probe alarms Er0 Er1 and Er3 are commonly due to an interrupted open circuit in the wires he cause may be a short to the chassis or the two leads shorting together Customer Service 800 333 5653 www thermalrite com 1 9 ETL Blast Chiller Service Manual 20 Probes continued To find the cause of the alarm disconnect the indicated probe and check the resistance between the two wires If the Ohm reading is 0 Probe circuit is shorted between Replace the probe aaa two wires Ohm reading is infinity s Ohm reading is infinity s Is infinity co Probe is open Is open Replacetheprobe the probe Reading matches the resistance Probe is good Another problem is the cause chart at a known temperature Reading is not 0 or and does Probe is out of range Replace the probe not match the resistance chart If none of these choices is the case Ohm out each wire to the chassis If the reading is 0 or anything less
30. probe P4 P5 P6 P7 and P8 differential set temperature chill end temperature with reference to the needle probe set temperature freeze end temperature with reference to the needle probe temperature at which the hard chill switches from the first step to the second with reference to the needle probe O TI O O ER O Tm 3 o O E i i i BC BF 4 4 of 3 4 4 2 Z 3 3 el 46 46 temperature above which it is not possible to start a set temperature operational cycle with reference to the needle probe needle probe and cabinet temperature differential for verification of correct needle probe insertion 0 the test will not be performed P15 Sec duration of the second test to check correct needle probe insertion see also P14 P16 min P17 min 240 45 P18 min 45 first hard timed chill step duration P19 min compressor delay from device power on from restoration of power minimum elapsed time period between two consecutive compressor start up operations minimum compressor shut down time DEFROSTING maximum set temperature chill duration also timed chill duration maximum set temperature freeze duration also timed freeze duration COMPRESSOR PROTECTIONS P20 min 1 defrost type 0 electric defrost on relay 1 hot gas defrost compressor and relay on 2 air evaporator fan on defrost end temperature with reference to the 4 evaporator probe 6 maximum defro
31. r Service Manual Section5 5chematics amp Wiring Diagrams e Component Schematic e Wiring Diagram Single Phase self contained e Wiring Diagram 3 phase Hot Gas Defrost self contained e Wiring Diagram 3 phase No Active Defrost remote I Model Numbers NUMBER OUTPUT OUTPUT emm mw n CES A TN EEN NE N v EN a m mme NE wv mmm Mu 3m Ges 3 TN wmm m cores amp x meas 5 mmus n mew ue CTN mom m a ETE m s mous wr NOG S mmm m m SE goe Maximum amount of food pounds that can be chilled in 90 minutes i NINIAN p Maximum amount of food pounds that can be frozen in 270 minutes S Self Contained G Gastronorm P Pastry R Remote Customer Service 800 333 5653 www thermalrite com 57 ETL Blast Chiller Service Manual Il Data Chart EVAPORATOR FAN A EE O gt E lt BE H Bc LL LL ec zi EJ EJ EJ Us EJ EJ ef et s ec LL e cc e LL N e T A a 2 e e COMPRESSOR RLA VOLT FREQUENCY E N H 7 LOW SIDE Psig TOTALA wen 1 AE Gas ETT COTO oven re 20 CES ATTE CT ATTE wns E ETE es TOTO ar ss CTO ATTE tese aman een 105 ess pnemwennm no EE ANN IE INSIEN EEN EIEN 60 zo wa 12 08 amor rea os 71 IE IE IE EIN momo ar Coses 71 60 wwe va 12 08 amor ar mana wi IN IE IE EIN ENE Geers 71 60
32. r the UP or DOWN arrow key to scroll through the menu of parameters 3 To select a parameter that is being displayed press the TIME key 4 To change the value press the UP or DOWN arrow key 5 Press the TIME key to save any changes and return to Parameters Menu Parameter List Factory Setting The following table shows the factory settings for both Blast Chiller GBC and shock Freezer GBF units Note Selecting a freezing cycle on a GBC unit will run a normal chilling cycle Cabinet at 4 F needle probe end cycle temperature at 37 F DESCRIPTION unit of temperature measurement eb cabinet probe offset evaporator probe offset needle probe offset operational setpoint during the second hard chill step also operational setpoint during normal chilling with reference to the cabinet probe P5 Wr 4 operational setpoint during freezing with reference to the cabinet probe A t BLAST CHILLERS 1 0 Customer Service 800 333 5653 www thermalrite com Thermal Rite GBF EN EN MANGNHOUER Service Menu Configuration Parameters continued A CHILLERS Thermal Rite ETL Blast Chiller Service Manual CODE U O M DESCRIPTION G operational setpoint during the first hard chill step with reference to the cabinet probe operational setpoint during post chill storage with reference to the cabinet probe operational setpoint during post freeze storage with reference to the cabinet
33. rator Fan 1 Remove the screws that mount the fan guard mid BLAST CHILLERS 48 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Replacing the Temperature Sensing Probes continued Remove the fan motor assembly Remove the fan wires from the terminal block Cut the wires close to the motor Mount the fan to the brace with four screws od os SI 9 Attach the end of the wires of the fan to the old wires and pull the wires from the control compartment to route them correctly 8 Remove the old wires 9 Connect the wires to the terminal block 10 Close the panel 11 Reinstall the fan guard Replacing the Door model GBF15 118 Switch Remove the front panel see page 29 2 Remove door switch mounting screws e 1 EN t X E M o E ES Br Sen E B 4 Remove the switch 5 Install new switch by reversing the above steps BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 49 ETL Blast Chiller Service Manual Replacing the Door Models GBC30SG to GBF171 132S Switch continued 1 Remove the front panel see page 29 2 Unscrew the switch mounting bolt nut 4 Remove the switch 5 Install new switch by reversing the above steps Replacing the Occasionally the pressure switch can fail or become blocked and an hP alarm Pressure Switch will be displayed even
34. s Front panel pin Customer Service 800 333 5653 www thermalrite com 29 ETL Blast Chiller Service Manual Removing the Model GBFI5 1S Front Panel 1 Open the door continued 2 Remove the two screws on the door frame side of the panel M AAT AM MV Al A YAY A WY A NN N 3 Hemove the panel to access the condenser coil keypad and door switch MES e gt m JM 4 131 Da _ e Pd Pest A on I oss Vik NW LLL NW NU y LY UD BLAST CHILLERS 30 Customer Service 800 333 5653 www thermalrite com Thermal Rite Reversing the Door Swing COR ET ThermalRite ETL Blast Chiller Service Manual The door on each model can be reversed so that it is hinged on the right or left 1 Remove the front panel and look for the C shaped bracket under the right side of the door 2 Unscrew the bracket and take it off by removing the hinge pin from the square hole Customer Service 800 333 5653 www thermalrite com 31 ETL Blast Chiller Service Manual Reversing the 3 Unscrew the upper hinge Door Swing a continued 4 Liftthe door up pull it out and set it aside Bottom hinge Upper hinge 32 Customer Service 800 333 5653 www thermalrite com aa TE ThermalRite ETL Blast Chiller Service Manual Reversing the 7 Move the lower hinge and upper plastic bushing to the opposit
35. st duration 10 i 10 defrost interval during storage see also P26 0 intermittent defrosting will never be activated only the first will be activated q N O1 o mn Customer Service 800 333 5653 www thermalrite com 1 1 ETL Blast Chiller Service Manual Service Menu TAM DESCRIPTION GBF Configuration P26 min first defrost delay from start of storage see also P25 P27 1 defrosting at start of chilling and freezing 1 Parameters aa 1 YES mE continued drip drein duration P29 resetting of compressor protections at start of defrosting only if P22 1 1 YES P30 sec 30 elapsed time between the defrost request and 30 switching on the compressor only if P22 1 and providing that the compressor is off when the defrost is requested see P31 7 8 also P31 sec elapsed time between the defrost request and activation of the solenoid valve only if P22 1 and on condition that the compressor is off when defrosting is requested see also P30 e EVAPORATOR FAN mm P342 F 37 temperature above which the evaporator fan is 3 switched off during storage with reference to the evaporator probe P34 evaporator fan activity during defrosting only if P22 0 or 1 on eoi P35 min evaporator stop time after dripping P36 Sp temperature above which the evaporator fan is switched off with reference to the cabinet probe P37 1 effect caused by activation of microport input on 1 evaporator
36. t interpretation or application of regulations General Installation 44 WARNING Incorrect installation or any modifications made to the appliance may damage property or result in injury or death Electrical 44 WARNING Electrical connections or any work required on the electrical circuits inside the appliance must be performed by certified technicians in compliance with local state and federal regulations AA WARNING Make sure all facility electrical connections are in compliance with all local and federal electrical code regulations ad BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite CHILLERS Thermal Rite ETL Blast Chiller Service Manual Inspection and Maintenance 44 WARNING Appliance maintenance must be carried out by only by suitably trained personnel 44 WARNING Before any maintenance work is performed the appliance must be disconnected from the electrical supply Apply a lockout tag to the electrical supply connection 44 WARNING All replacement parts that are not supplied by Arctic Air must be pre approved before installation Repair Work Safety 44 WARNING Repair work must only be performed by ThermalRite or one of its authorized representatives ThermalRite accepts no responsibility for any situation resulting from work performed by untrained and or unauthorized technicians ELECTRICAL LOCKOUT TAGOUT PROCEDURE 44 WARNING Before performing any service that invo
37. than ee the probe is shorted to the chassis and must be replaced Note A spare probe can be used in place of the suspected one If the alarm continues the problem is something other than the probe The problem could also be in the probe connection to the Main Board Check for corrosion water loose or missing connections The problem could also be a result of an internal failure on the Main Board If all previous probe troubleshooting has not found the problem and the alarm still occurs replace the Main Board Probe Resistance Graph and Chart Resistance Graph 77 F 10kQ A k BLAST CHILLERS Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Probes continued Resistance Chart re ma mon TOP iow IE N mo eg we 01 Ces sn we ss Las es wo s X s BLAST CHILLERS Thermal Rite Customer Service 800 333 5653 www thermalrite com 21 ETL Blast Chiller Service Manual 22 Probes continued Ear dde Customer Service 800 333 5653 www thermalrite com CINES 0 4912 0 5111 04791 0 4986 ad T CHILLERS ThermalRite D gt o Door Switch aa TE Thermal Rite ETL Blast Chiller Service Manual The Blast Chiller is equipped with a magnetic door switch Opening the door is detected by a magnetic sensor When the door is closed the sensor is activated by a magnet built into the door There are two
38. thermalrite com 7 ETL Blast Chiller Service Manual Page Section 3 continued ACCESSING THE CONDENSING UNIT SELF CONTAINED MODELS 34 Models from GBC39S to GBF171 132 sss 34 Models from GBC30SG to GBF44 268P ooo sss 38 With EE N 47 Remote Units Models GBF440 38R and GBF837 727R 43 ACCESSING THE EVAPORATOR ASSEMBLY eee 44 Evaporator Assembly Description s s s 44 Accessing the Evaporator o oococccccococcccnocincnnninonnnnconcnnonnnncnnnnonncnninonnnnss 45 REPLACING THE TEMPERATURE SENSING PROBES 46 REPLACING THE EVAPORATOR FAN 48 REPLACING TEDOOR MERE ee ee Ee Ge De ee iow 49 Model GBFTS LS 49 Models GBC30SG to GBF171 132 sse 50 PEP AGING THE PRESSURE SWITCH star 50 REPLACING THE DOOR FRAME HEATER ee ee ee ee ee ee ee ee ee 51 REPLACING THE RELAY BOARD s ne 52 REPLACING THE KEYPAD 53 Section yACUUM AND CHARGING PROCEDURE ee ee ee 54 Vacuum and Charging InstructIONS ee ee ee ee ee ee 99 Vacuum and Charging Recommendations 56 SECTION5 SCHEMATICS amp WIRING DIAGRAMS nnn 57 APPENDICE G ee ee ET DE Ge ee Y Model ide EE OE N EE N ER Ee soeeecsoen 57 IMBRE oO PO NO 58 COMPONENT SGAE MA 59 WIRING SINGLE PHASE UNITS SELF CONTAINED
39. though the pressures are good e Jo replace the pressure switch the capillary tubes must be disconnected e The high pressure capillary tube is connected to the liquid receiver upper tap K aal High pressure connection self closing M 2 BLAST CHILLERS 50 Customer Service 800 333 5653 www thermalrite com Thermal Rite Replacing the Pressure Switch continued Replacing the Door Frame Heater an TE Thermal Rite ETL Blast Chiller Service Manual e Before removing the capillary tube connections the tap must be closed to prevent refrigerant loss e On the low pressure side there is a self closing 4 SAE Schroeder connector When a Door Frame Heater stops working it could be a problem with the heater such as an open element or a short he problem could also be an interrupted power supply Test the power supply before replacing the heater Test the heater using the following specifications cated GER 1 4 KO 24 KO To replace the heater 1 Inserta thin knife blade between the edge of the plastic cover strip and the frame You may need to tap lightly on the knife to insert it 2 Prythe strip up and out Do this for all the strips 3 Disconnect the wire leads and remove the defective heater Customer Service 800 333 5653 www thermalrite com 51 ETL Blast Chiller Service Manual Replacing the 4 nsert the replacement heater in the channel and connect the wire leads Door
40. us va 12 08 amor ar ns 60 us va 12 08 amor ar Coses wi IN IE IE EIN EEN 208 240V 1Ph 60Hz also available oO C2 Ce OO O1 331 1 4 A BLAST CHILLERS 58 Customer Service 800 333 5653 www thermalrite com Thermal Rite ETL Blast Chiller Service Manual Component Schematic UONMS BINSSAId SL 8 2 19Q105Qg uoneagtA p JOJeJOdenz L SALA OIYEJSOWUWOU Z4 V Y SAJEA MOOI Bm om LI 2 1 Y 9A e MOOI eM OM OL SALA PIOUSIOS 6 Jo0jeoipur pinbr 8 Joy MO Z 19AI9291 pInbI7 9 anjer Q S G SALA ADO EIOY y Jesuepuo2 8 9 19Q105Q8 uoneJglA c juiof jax90d Buipueosep eo uan g juiof jax90d ejuozuou v JosseJduJo Au Oe L S 91 o lle Z e 8aS O S o EN V OE e oos l I VN VN N NONE NN 59 Customer Service 800 333 5653 www thermalrite com BLAST CHILLERS Thermal Rite ETL Blast Chiller Service Manual Wiring Single phase Units Self contained HO Orr sl MEN NI BIEG IE ILLE ELECTRICAL BOX 91 DMV Ee 1 2 3 4 5 6 718 9 tto t1 12 t3 14 t5 16 igte topo ed 22 PS PRESSURE AWG 18 DISPLAY KEYBOARD MAGNETIC DOOR SWITCH FAN MOTOR EVAPORATOR SOLENOID VALVE E AWG 16 SOLENOID VALVE CAPACITOR CONDENSER FAN MOTORS WG 1 COMPRESSOR DOOR FRAME H HEATER FUSE vL OMV X ON O
41. vaporator may not be getting sufficient refrigerant Pressure Checks andthe actual evaporator temperature could be much higher than 49 F It is not recommended to base any troubleshooting conclusions solely on the pressure readings Suction Pressure 1 5 2 psig This pressure should be measured when the cabinet temperature is at 40 F with the compressor running Discharge Pressure 230 psig his pressure can vary greatly and can reach up to 360 psig depending on the ambient temperature and heat load inside the cabinet Very high discharge pressures can cause the pressure switch to signal an alarm AA T BLAS CHILLERS 28 Customer Service 800 333 5653 www thermalrite com Thermal Rite Removing the Front Panel A BLAST CHILLERS Thermal Rite ETL Blast Chiller Service Manual Section3 Service and Repair Procedures WARNING Before performing any service that involves electrical connection or disconnection and or exposure to electrical components always follow the Electrical LOCKOUT TAGOUT Procedure Disconnect all circuits Failure to comply can cause property damage injury or death Models from GBC30SG to GBF171 132S 1 Insert a screwdriver through the square access holes at the bottom of the panel and remove the two screws 1st Screw 2nd Screw 2 he panel is attached at the top by two pins on the left and right Pull the panel out from the bottom and pull it down so the pins are clear of the hole
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