Electron Thermo 3684 Operating And Maintenance Manual Download Page 20

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Section 6 - Parts List

3684/3686

3688

Description

Stock #

227831 227929

Compressor

227774

Starting Relay

227835

227775

Overload Relay

227936

Overtemp Relay

227930

Starting Capacitor

227931 227931

Running

Capacitor

227933 227933

Undertemp

Thermostat

227934

227925

Thermal Protector

N/A

227941

Condensing Fan Motor

227939

Cooling Fan Motor, Right (3688)

N/A

227940

Cooling Fan Motor, Left (3688)

227942

Thermal Fuse

227943 227944

Ballast

227945

Lamp Switch

227946

Door Switch

227935

Power Relay

227938

Power Supply

227871

227870

Main Power Switch/Circuit Breaker

227947

227190

Fluorescent Lamp Starter

227949

227950

Drain Pan Heater

227951

227952

Temp Control/Display Board

227953

227954

Temp Sensor

227937

Defrost Sensor (black leads)

N/A

227960

Defrost Sensor (white leads)

Consult

Fluorescent Lamp 40W (3688)

Factory

Fluorescent Lamp 20W (3684/3686)

227948 Consult

Factory

Defrost Heater

227989

227990

Display Board

Model 3680 Series _____________________________________________________________________________Parts List

6 - 1

Summary of Contents for Thermo 3684

Page 1: ...Models 3684 3686 3688 Laboratory Refrigerators Operating and Maintenance Manual Manual No 7003688 Rev 9 ...

Page 2: ...ent shall Thermo be held liable for any damages direct or incidental aris ing out of or related to the use of this manual MANUAL NO 7003688 9 22052 FR 1762 2 2 04 Discontinued Models 3687 and 3689 ccs 8 21443 3 20 03 Removed strip chart recorder as an accessory aks 7 21377 IN 3086 2 13 03 Clarified condenser cleaning ccs 6 20358 10 2 01 Updated specs and refrigeration schematics for refrigerant am...

Page 3: ... when using special hand ing equipment or when wearing special protective clothing Potential biological hazards Proper protective equipment and procedures must be used when following instructions associated with this symbol Reference O S H A Regulation 1910 1030 Potentially hazardous energy Equipment being maintained or serviced must be turned off and locked off to prevent possible injury Referenc...

Page 4: ...Model 3680 Series ____________________________________________________________________ iii ...

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Page 6: ... 2 3 2 4 Door Open Light 2 3 2 5 Audible Alarm Switch 2 3 2 6 Interior Lights Switch 2 3 2 7 Digital Temperature Display 2 3 2 8 Remote Alarm Terminal 2 3 Section 3 Maintenance 3 1 3 1 Defrosting the Unit 3 1 a Cycle Defrost 3 1 b Forced Defrost 3 1 3 2 Cleaning Evaporation Tray Condenser and Filter 3 1 a Cleaning the Evaporation Tray 3 1 b Cleaning the Condenser 3 1 c Cleaning the Condenser Filte...

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Page 8: ... or where chemicals or gases are pres ent Chamber temperature is maintained through the circulation of forced air Ensure that the air intake and exhaust vents are clear of obstruction at all times Allow 4 5 inches 10cm of clearance on all sides of the unit to reduce power con sumption and allow free air circulation Two wall mounts are attached to the top rear of the unit Remove the wall mounts and...

Page 9: ...hamber temperature is 5 C Allow the unit to cool down to setpoint The chamber temperature is displayed on the temperature indicator display on the control panel Note Although the refrigerator will operate at under 2 C it is not suitable for prolonged use at this range Always set the ther mostat above 2 C When running the unit at the top of the range 14 C the audible alarm may sound In this case it...

Page 10: ...mperature setpoint does not change Model 3680 Series __________________________________________________________________Control Panel Procedures 2 1 Operation Key Display Mode 1 Connect to power source and turn on power switch Current chamber temperature Temperature Display 2 Press the SET key SET First digit of temperature flashes Chooses the next digit to be changed 3 Using the shift keys to chan...

Page 11: ...l Procedures 2 2 Operation Key Display Mode 1 Current chamber temperature Temperature Display 2 Press and hold for 5 seconds The first digit of the temperature display flashes 3 Set flashing digit to 1 Increases the value of the flashing digit Key Lock LO is enabled key lock off L1 is disabled key lock on 4 Press the SET key SET Key lock is ON and the display returns to the current chamber tempera...

Page 12: ...l Procedures 2 7 Digital Temperature Display TEMPERATURE display shows chamber temperature 2 8 Remote Alarm Terminal Disconnect the unit from power before beginning any installation or service procedure Do not turn the refrigerator ON within 5 minutes of turning it off The compressor may not operate properly without this 5 minute interval This also protects the compressor from excessive pressure b...

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Page 14: ... Cleaning the Condenser 3684 3686 Clean the condenser using a vacuum sweeper c Cleaning the Condenser Filter 3688 To prevent dust from clogging the condenser a filter is installed to the right of the evaporation tray 1 Remove the bottom front cover then hold the filter by the leading edge and slide it to the left Clean with water dry completely and return it to its original posi tion 2 After clean...

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Page 16: ...vated after 15 minute delay Low Temp Alarm If chamber temp is lower than 0 C Remote alarm is activated Power Failure Alarm Power failure or accidental power disconnect Remote alarm is activated Door Alarm Door is open DOOR light on Intermittent after 2 minute delay Auto Return No keys pressed for 90 seconds in set mode Chamber temp displayed Set mode is cancelled Key lock Key lock is on or set to ...

Page 17: ...eck electrical power Electric power has failed or been disconnected Key Operation Unavailable Is Key Lock set to OFF Poor Refrigeration Temperature control not properly set Too many warm items in the chamber Frost on the evaporator Freezer door opened and closed frequently or not closed tightly Back of the refrigerator touching the wall Air exhaust vent blocked Unit in direct sunlight or too close...

Page 18: ... 2 1 FLA Weight 304 24 lbs 138 kg Model 3686 Operating Temperature 2 C 35 6 F to 14 C 57 2 F Temperature Control Electronic control with digital temperature readout readable to the nearest C Defrost Heater 148W Fan Motor Chamber output 3W 1 Compressor 0 3 HP hermetically sealed Refrigeration Forced cool air circulation Refrigerant 5 6 oz 158 8 grams R134A 0 3 oz 9 9 grams N Pentane Capacity 17 2 c...

Page 19: ... 1034 liters Interior Dimensions 66 88 W x 51 19 H x 18 31 F B 169 88cm x 130 02cm x 46 51cm Exterior Dimensions 70 88 W x 70 5 H x 23 63 F B 180 04cm x 179 07cm x 60 02cm Interior Light One 40W fluorescent light with control panel mounted switch Insulation Non CFC foamed in place rigid polyurethane Shelving Five adjustable shelves 110 2 lbs 50kg shelf load limit Ten roll out baskets 44 0 lbs 20kg...

Page 20: ...43 227944 Ballast 227945 227945 Lamp Switch 227946 227946 Door Switch 227935 227935 Power Relay 227938 227938 Power Supply 227871 227870 Main Power Switch Circuit Breaker 227947 227190 Fluorescent Lamp Starter 227949 227950 Drain Pan Heater 227951 227952 Temp Control Display Board 227953 227954 Temp Sensor 227937 227937 Defrost Sensor black leads N A 227960 Defrost Sensor white leads Consult Consu...

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Page 28: ... warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo Electron Corporation postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL OR IMPLIED NO WARRANTIES OF MERCHANTABILITY...

Page 29: ...der this warranty shall not extend the warranty to either the equipment or to the component part beyond the original warranty period The Technical Services Department must give prior approval for return of any components or equipment At Thermo s option all non conforming parts must be returned to Thermo postage paid and replacement parts are shipped FOB destination THIS WARRANTY IS EXCLUSIVE AND I...

Page 30: ...Thermo Electron Corporation Controlled Environment Equipment Millcreek Road P O Box 649 Marietta Ohio 45750 U S A Telephone 740 373 4763 Telefax 740 373 4189 ...

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