Summary of Contents for Thermo Scientific Revco ULT1790-10-A
Page 1
Thermo Scientific Revco ® CxF -40C and -86C Chest Freezers Operating Manual 7045808 Rev. 7 Visit us online to register your warranty www.thermoscientific.com/labwarranty...
Page 2
5/12/16 Updated refrigeration and electrical schematics - Schurter switch 40544 12/9/15 BUS information (preventive maintenance and BUS control panel and operation) 40286/FR-2805 7/1/15 New start relay - expl enclosure drawing and 8702 & 8722 elec schematics Thermo Scientific Revco CxF...
Page 4
Always use the proper protective equipment (clothing, gloves, goggles, etc.) 4 Always dissipate extreme cold or heat and wear protective clothing. 4 Always follow good hygiene practices. 4 Each individual is responsible for his or her own safety. Thermo Scientific Revco CxF...
Page 5
We can also provide you with a quotation on our Extended Warranty for your Thermo Scientific products. Whatever Thermo Scientific products you need or use, we will be happy to discuss your applications. If you are experiencing technical problems, working together, we will help you locate the problem and, chances are, correct it yourself...over the telephone without a service...
Key lock Control Panel Optional Back Up System Controls Optional Datalogger or Recorder Figure 1-1. Front View 3 cu ft Models Keylock EnviroScan Control Optional BUS Control Optional Recorder or Datalogger Figure 1-2. Front View Remaining Models Thermo Scientific Revco CxF...
Page 9
Figure 1-3. Rear View 3 cu ft Models Optional BUS Connections Remote Alarm Contacts and Analog Output RS-232 or RS-485 Interface Power Switch (mains disconnect) Threaded holes for wall bumpers Power Inlet Access Port Figure 1-4. Rear View Remaining Models Revco CxF Thermo Scientific...
Page 10
Battery Switch Figure 1-6. All Models Except 3 cu ft Thermo Scientific Revco CxF...
Page 11
System battery Figure 1-8. 3 cu ft Models Revco CxF Thermo Scientific...
Up and Down Arrows - Increases or decreases values, toggles between choices. Enter - Stores the value into computer memory. Visual Alarm Display Temp Display Message Center Up and Down Scroll for Parameters Arrow Keys Arrows Figure 1-9. Control Panel Keys, Display and Indicators Thermo Scientific Revco CxF...
Page 13
* HSHX Temperature BUS Battery Test System Set Point Display Temperature * Clear High Stage Alarm Set Access Code RS485 Address BUS type CO2 or LN2 Cold Excursion Warm Excursion Reset Excursion * -86C units only Revco CxF Thermo Scientific...
The freezer can be easily pushed to the desired approved location, as described previously. When the freezer is in position, set the front caster brakes. Note Do not move the freezer with the product load inside. Thermo Scientific Revco CxF...
COM (common). The contacts will trip on a power outage, high temperature alarm or low temperature alarm. They will also trip on high stage (-86C units only), control probe and microboard failures. Figure 1-11 shows the remote contacts in alarm state. Thermo Scientific Revco CxF...
36 hours to charge at initial start-up. A “Low Battery” alarm may occur until the batteries are fully charged. Should a power failure occur during the initial start-up period, the electronics will have limited operation. 1-10 Revco CxF Thermo Scientific...
5. Press the Mode key until the Run indicator lights for Run mode or press the right/left arrow keys to go to next/previous parameter. If no control keys are pressed, the freezer will automatically return to RUN mode after 5 minutes. Thermo Scientific Revco CxF 1-11...
If no control keys are pressed, the freezer will automatically return to RUN mode after 5 minutes. Note The low alarm set point must be set at least 5°C from the control set point. 1-12 Revco CxF Thermo Scientific...
* HSHX TEMPERATURE (heat exchanger temperature); -86C units only This information is scrolled individually by pressing the right arrow key. In each case, the message center returns to SYSTEM OK in 10 seconds if no keys are pressed. Thermo Scientific Revco CxF 1-13...
Page 21
Press to return Numbers decrease to previous parameter Numbers increase Optional Press Enter BACKUP = -XX Back Up System to save setting Scroll for Parameters Set Point Press to return to previous parameter Numbers decrease 1-14 Revco CxF Thermo Scientific...
Note During calibration, the temperature display will not be available. If no keys are pressed for approximately five minutes while in calibration mode, the system will reset to Run mode. Thermo Scientific Revco CxF...
Page 23
Scroll for Parameters Press to return Numbers decrease to previous parameter Numbers increase Optional SAMPT = -XX.X Press Enter Sample Probe to save setting Scroll for Parameters Press to return Numbers decrease to previous parameter Revco CxF Thermo Scientific...
The temperature on the display will begin to decrease until the low alarm set point has been reached. The audible alarm will sound and the alarm indicator will flash. Press the Silence key to mute the alarm. Thermo Scientific Revco CxF...
Low Battery indicator will light. Press the Silence key. The audible alarm and alarm indicator will go off. The Low Battery light will stay on. If the test fails, it is recommended to replace the BUS battery. Revco CxF Thermo Scientific...
6. Press the Mode key until the Run indicator lights.A 3-digit Access Code can be entered to avoid unauthorized personnel from changing the set points, calibration, or configuration. A setting of 000 will bypass the access code. The factory setting is 000. Thermo Scientific Revco CxF...
Cold Excursion This function displays the coldest temperature recorded by the control probe. Warm Excursion This function displays the warmest temperature recorded by the control probe. Reset Excursion This function resets the cold and warm excursions. Revco CxF Thermo Scientific...
Page 28
SYS BAT TEST to initiate Scroll for Parameters test Press to return to previous parameter Optional Press Enter BUS BAT TEST BUS Battery to initiate Scroll for Parameters Test test Press to return to previous parameter Thermo Scientific Revco CxF...
Page 29
Press to return to previous parameter Type CO2 Optional BUS TYPE CO2 Press Enter to Back Up save the setting Scroll for Parameters Press to return System Type Type LN2 to previous parameter Revco CxF Thermo Scientific...
Page 30
WARM EX = -XX Excursion Scroll for Parameters Press to return to previous parameter Press Enter to reset the cold RST EXCUR Reset and warm Scroll for Parameters Excursions excursion values Press to return to previous parameter Thermo Scientific Revco CxF...
Micro Board Failure MICRO FAIL 0 min. 15 min. All alarm delays and ringback times are +30 seconds. *The automatic battery test runs immediately on power-up, then every 8 hours thereafter. ** -86C units only Thermo Scientific Revco CxF...
However, with this type of failure, freezer operation becomes undependable. Lost Communication Communication between the micro board and the display board has been lost. Under this condition, the visual alarm flashes along with dashes in the temperature display (----). Contact Technical Services. Revco CxF Thermo Scientific...
Page 33
ErF1 .. Unit is 230V and the voltage detected is above the high limit (260VRMS) Erg1 .. Unit is 115V and the voltage detected is below the low limit (85VRMS) ErH1 .. Unit is 115V and the voltage detected is above the high limit (160VRMS) ErH1 “VAC > 160V” Thermo Scientific Revco CxF...
Page 34
“Seven segment” display will show “Er07”. The -86C system will have 10 minute staging between the high stage compressor and the low stage compressor activation (-40C units will activate the compressor). The system will go to bottom out temperatures. Revco CxF Thermo Scientific...
Page 35
Name: Lost Communication dashes) Description: Communication between the micro board and the display board has been lost. Under this con- ---- in dition, the visual alarm flashes along with dashes in thetemperature display (----). Contact Technical Services. display Thermo Scientific Revco CxF...
1. Open the lower panel door by grasping the handle. See Figures 5-1 and 5-2. 2. Using a vacuum cleaner, exercising care to not damage the condenser fins, clean the condenser. Depending upon environmental conditions, the condenser may need to be cleaned more frequently. Thermo Scientific Revco CxF...
Press the Silence key to mute the audible alarm. The lid gasket may need to be cleaned more frequently if dirt or excessive frost build-up prevents the door from closing properly. Revco CxF Thermo Scientific...
Replacement batteries must be rechargeable and are available from Thermo. Refer to the parts list for stock number and description of the replacement batteries (P/N 400159). Dispose of the used batteries in a safe manner and in accordance with good environmental practices. Thermo Scientific Revco CxF...
6. If the voltage reads less than 10.8 volts, replace the battery. If above 10.8, re-install as previously. 7. Turn the battery power switch to Standby mode ( ). 8. Close lower door. Revco CxF Thermo Scientific...
Condenser” in Section 5. Recommended Maintenance * Backup System - Inject test and battery. See Section 6, Test the BUS Operation. * Qualified service technicians only ** Dispose of properly, according to all state and federal regulations. Thermo Scientific Revco CxF...
Note Cover open end of injection assembly with tape to keep insulation from entering the nipple. 2. Slide 3/8” flatwasher over open end of nipple. 3. Insert the covered end of the injection assembly through exterior hole. Thermo Scientific Revco CxF...
(viewed from the side) of 12.7 and 20 cu. ft. models, and in the lower right corner (viewed from the back) of 3.0 cu. ft. models. probe wires Figure 6-3. Probe and Solenoid Connections Revco CxF Thermo Scientific...
Page 43
Secure the back-up probe to the temperature probe using a small tie wrap (Figure 6-5). Figure 6-5. Probe location 6. Seal around the interior and exterior opening of the probe port with Permagum sealant. 7. Reinstall the probe cover (Figure 6-5). Thermo Scientific Revco CxF...
Caution Make sure the pressure relief valve on any LN tank is adjusted to 30 PSI maximum blow-off. Warning Carbon dioxide gas suppresses oxygen levels and may cause suffocation if area is not well ventilated. Refer to “Handling Liquid CO Appendix B of this manual. Revco CxF Thermo Scientific...
Page 45
5. Press the Mode key until the Run indicator lights, or press the right or left arrow to go to the next or previous parameter. If no control keys are pressed, the freezer will automatically return to RUN mode after 5 minutes. Thermo Scientific Revco CxF...
3. Slowly disconnect the fitting assembly from the supply (in the event that any gas remains in the line). Chart Recorder 9-volt battery Program selection and calibration buttons Green LED Figure 6-7. Recorder Details Revco CxF Thermo Scientific...
1. Place an accurate thermometer in the chamber next to the recorder probe. 2. Temperature probes for the recorder are located in the left front corner of the freezer chamber (Figure 1-4). 3. After about three minutes, compare the thermometer reading with the chart recorder reading. Thermo Scientific Revco CxF...
Page 48
Note The felt-tip pen on the recorder requires periodic replacement. Usually the ink will appear to fade before replacement becomes necessary. Additional pen tips may be purchased from Thermo. Revco CxF Thermo Scientific...
Page 53
2500V for a 230V supply and 1500V for a 120V supply. Pollution degree describes the amount of conductive pollution present in the operating environment. Pollution degree 2 assumes that normally only non-conductive pollution such as dust occurs with the exception of occasional conductivity caused by condensation. Thermo Scientific Revco CxF...
Page 54
Section 8 Spare Parts Thermo Scientific Revco CxF...
Page 55
Section 8 Spare Parts Exploded Drawing 3 cu ft Chest Freezer Heat Exchanger 8700-201-1-B Rev. 0 Page 1 of 1 Revco CxF Thermo Scientific...
Page 56
Section 8 Spare Parts Exploded Drawing Model: 3 cu ft Chest Freezer Lid (F -TS) 8700-200-1-B Rev. 1 Page 1 of 2 Thermo Scientific Revco CxF...
Page 57
Section 8 Spare Parts Exploded Drawing Model: 3 cu ft Chest Freezer Lid (F -TS) 8700-200-1-B Rev. 1 Page 2 of 2 Revco CxF Thermo Scientific...
Page 58
Section 8 Spare Parts Exploded Drawing Model 3/6.7 cu ft Chest Freezer Cabinet Assy. (F - TS) 8700-200-2-B Rev. 1 Page 1 of 1 Thermo Scientific Revco CxF...
Page 59
Section 8 Spare Parts Revco CxF Thermo Scientific...
Page 60
Section 8 Spare Parts Thermo Scientific Revco CxF...
Page 61
Section 8 Spare Parts Exploded Drawing Model: 12.7, 17 and 20 cu ft Chest Freezer Lid 8704-200-1-B Rev. 1 Page 1 of 2 Revco CxF Thermo Scientific...
Page 62
Section 8 Spare Parts Exploded Drawing Model: 12.7, 17 and 20 cu ft Chest Freezer Lid 8704-200-1-B Rev. 1 Page 2 of 2 Thermo Scientific Revco CxF...
Page 63
Section 8 Spare Parts Exploded Drawing 12.7 cu ft Chest Freezer Cabinet (F - TS) 8704-200-2-B Rev. 0 Page 1 of 2 8-10 Revco CxF Thermo Scientific...
Page 64
Section 8 Spare Parts Exploded Drawing 12.7 cu ft Chest Freezer Cabinet (F - TS) 8704-200-2-B Rev. 0 Page 2 of 2 Thermo Scientific Revco CxF 8-11...
Page 65
Section 8 Spare Parts 8704-200-3 Rev. 4 12.7 cu ft Chest Freezer Side Car (F - TS) Page 1 of 2 8-12 Revco CxF Thermo Scientific...
Page 66
Section 8 Spare Parts 12.7 cu ft Chest Freezer Side Car (F - TS) 8704-200-3 Rev. 4 Page 2 of 2 Thermo Scientific Revco CxF 8-13...
Page 105
When handling liquid in open containers, it is advisable to wear high-top shoes. Trousers (which should be cuffless if possible) should be worn outside the shoes. Thermo Scientific Revco CxF A -1...
Page 106
Use only the loose- fitting necktube core supplied or one of the approved accessories for closing the necktube. Check the unit periodically to be sure that venting is not restricted by accumulated ice or frost. A -2 Revco CxF Thermo Scientific...
Page 107
Disposal of liquid nitrogen should be performed outdoors in a safe place. Pour the liquid slowly on gravel or bare earth where it can evaporate without causing damage. Do not pour the liquid on pavement. Thermo Scientific Revco CxF A -3...
Page 108
Disposal of liquid CO should be done outdoors in a safe place. Pour the liquid slowly on gravel or bare earth where it can evaporate without causing damage. Do not pour the liquid on pavement. A -4 Revco CxF Thermo Scientific...
108°F. Under no circumstance should the water be over 112°F, nor should the frozen part be rubbed either before or after rewarming. The patient should neither smoke nor drink alcohol. Thermo Scientific Revco CxF A -5...
Need help?
Do you have a question about the Revco ULT1790-10-A and is the answer not in the manual?
Questions and answers