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Forma Scientific, Inc.
P.O. Box 649
Marietta, Ohio 45750
Telephone: (740) 373-4763
Telefax: (740) 373-2382
________________________________________
Models:
8516, 8517, 8523, 8525,
8526, and 8560
8500 Series Non-CFC
Ultra-Low Temperature Upright Freezers
Manual No. 7028516
Rev. 2
Read this Instruction Manual.
Failure to read, understand and follow the instructions in this manual may result
in damage to the unit, injury to operating personnel and poor equipment performance.
Caution: All internal adjustments and maintenance must be performed by
qualified service personnel.
Refer to the serial tag on the
rear cover of this manual
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Table of Contents
Related Manuals for Forma Scientific 8500 Series
Summary of Contents for Forma Scientific 8500 Series
- Page 1 Telefax: (740) 373-2382 ________________________________________ Models: 8516, 8517, 8523, 8525, 8526, and 8560 8500 Series Non-CFC Ultra-Low Temperature Upright Freezers Manual No. 7028516 Rev. 2 Read this Instruction Manual. Failure to read, understand and follow the instructions in this manual may result in damage to the unit, injury to operating personnel and poor equipment performance.
- Page 2 Forma Scientific Inc. makes no representations or warranties with respect to this manual. In no event shall Forma Scientific Inc. be held liable for any damages, direct or incidental, arising out of or related to the use of this manual.
- Page 3 Monday through Friday from 8:00 a.m. to 7:00 p.m. Eastern Time. Please contact us by telephone or fax. If you wish to write, our mailing address is: Forma Scientific, Inc. PO Box 649 Marietta, OH 45750 International customers please contact your local Forma Scientific distributor.
- Page 4 Forma Scientific, Inc.____________________________________________________Safety General Safety Notes used in this Manual Important operating and/or maintenance instructions. Read the accompanying text carefully. Ce symbole attire l’attention de l’utilisateur sur des instructions importantes de fonctionnement et/ou d’entretien. Il peut être utilisé seul ou avec d’autres symboles de sécurité.
- Page 5 Forma Scientific, Inc.____________________________________________________Safety Equipment being maintained or serviced must be turned off and locked off to prevent possible injury. Risques potentiels liés à l’énergie. L’équipement en entretien ou en maintenance doit être éteint et mis sous clé pour éviter des blessures possibles.
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Page 6: Table Of Contents
Forma Scientific, Inc.__________________________________________________Contents Table of Contents Section 1 - Receiving 1.1 Preliminary Inspection ................1-1 1.2 Visible Loss or Damage ................1-1 1.3 Responsibility for Shipping Damage.............1-1 Section 2 - installation 2.1 Introduction ..................2-1 a. Enviro-Scan Microprocessor Monitoring System ......2-1 b. Non-CFC, non-HCFC and Non-flammable Refrigerants ....2-1 c. - Page 7 Forma Scientific, Inc.__________________________________________________Contents 3.4 Key Functions Requiring Access Code ..........3-3 a. Set Point Adjustment Screw............3-4 3.5 Audible Alarm and Control Panel Indicators........3-4 3.6 Double Door Freezer (Factory-Built Option) ........3-6 3.7 Set Point Adjustment Screwdriver ............3-6 3.8 Automatic Voltage Compensation System ...........3-6 3.9 CoBex Temperature Recorder (optional)..........3-7...
- Page 8 Forma Scientific, Inc.__________________________________________________Contents Section 7 - Service 7.1 Servicing the Refrigeration System ............7-1 7.2 Troubleshooting Guide .................7-1 7.3 8500 Upright Series Cabinet Hardware ..........7-1 Section 8 - Specifications 8.1 Models 8516 and 8517................8-1 8.2 Model 8523...................8-2 8.3 Models 8525 and 8526................8-3 8.4 Model 8560...................8-4...
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Page 9: Section 1 - Receiving
Inc. ends when the merchandise is loaded onto the carrier's vehicle. On F.O.B. Destination shipments, Forma Scientific's and the carrier's responsibility ends when your Receiving Department personnel sign a free and clear delivery receipt. Whenever possible, Forma Scientific, Inc. will assist in settling claims for loss or in-transit damage. -
Page 10: Section 2 - Installation
Cleaning the air filter and condenser fins is done from the front of the unit. Other important features of the Forma Scientific 8500 Series Freezers are: a. Enviro-Scan Microprocessor Monitoring System Enviro-Scan uses a digital display, audible and visual indicators and a touch sensitive key pad to provide total control of all freezer functions. -
Page 11: Smart" Condenser Fans
An enlarged condenser and two temperature controlled cooling fans also contribute to better efficiency, even in high ambient conditions. 2.2 Environmental Conditions The Forma 8500 Series ULT Freezers are designed to operate in the following environmental conditions: • Indoors • Altitudes up to 2,000 meters •... -
Page 12: Installing The Wall Bumpers
Forma Scientific, Inc.________________________________________________Installation 2.3 Installing the Wall Bumpers The parts bag contains two (2) 1/4-20 x 5-1/2" bumper bolts and two (2) neoprene caps. Install the bolts (the holes are pre-tapped) on the back side of the compressor section. Install a neoprene cap on each bolt. -
Page 13: Attaching The Power Cord Set
2.7 Connecting Power to the Freezer Forma Scientific, Inc. recommends that the freezer be operated on a dedicated electrical circuit to avoid circuit overload . Before connecting the freezer to an adequate power source, refer to the electrical data plate mounted on the back of the unit, the schematics located in Section 11, or to the electrical specifications listed in Section 8. -
Page 14: Rs-232 Output Interface
2.9 RS-232 Output Interface The 8500 series freezers are equipped with an RS-232 Serial Communication Interface for the remote transmission of sensor data. A standard DB-25S connector is located on the rear of the compressor housing. The data is "dumb printer" formatted, which permits interfacing with either a computer or a serial printer. -
Page 15: Remote Alarm Connector
2.10 Remote Alarm Connector For installations requiring remote temperature monitoring or high/low temperature alarm systems, a remote connector is provided on all Forma 8500 Series Upright Freezers. Figure 2-1 identifies the location of the remote alarm connector, Figure 2-2 identifies the pin output. - Page 16 Forma Scientific, Inc.________________________________________________Installation Pin # Description Over temperature Common Over temperature N.C. Over temperature N.O. Millivolt Out (Positive +) Under temperature N.C. Millivolt Out (Negative -) Under temperature Common Under temperature N.O. (Not Used) (Not Used) Figure 2-3...
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Page 17: Section 3 - Enviro-Scan Monitor
Forma Scientific, Inc.________________________________________Enviro-Scan Monitor Section 3 - Enviro-Scan Monitor 3.1 The Enviro-Scan Monitor Figure 3-1 Enviro-Scan Monitor The Enviro-Scan Monitor provides constant monitoring of the freezer's operation. The numerical LCD display provides a readout of the freezer chamber temperature in increments of one degree Celsius. -
Page 18: Key Functions Requiring Access Code
Forma Scientific, Inc.________________________________________Enviro-Scan Monitor 3.2 Main Power Switch (mains disconnect) The main power switch is located on the back of the refrigeration unit, directly above the line cord. = (o) = (|) 3.3 Key Functions Requiring No Access Code (Refer to Figure 3-1) - Page 19 Forma Scientific, Inc.________________________________________Enviro-Scan Monitor Alarm Test The alarm limit must be set to within 45°C of actual cabinet temperature to perform this test. If the alarm limit is not set within this limit, a long tone will sound and no test will occur.
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Page 20: Set Point Adjustment Screw
Forma Scientific, Inc.________________________________________Enviro-Scan Monitor Limit The low limit key is used to establish a Low Limit set point. When the chamber temperature reaches (or exceeds) the Low Limit set point, the audible alarm will sound and the UNDER TEMP indicating light will come on. The remote alarm contacts, located on the back of freezer, will also be activated. - Page 21 Forma Scientific, Inc.________________________________________Enviro-Scan Monitor Under Temp (LED): Flashes when an under temperature condition exists. Standby (LED): Lights when in standby mode. Low Battery (LED): On when battery state of charge is below 50% and AC power is on. When AC power is off the LOW BATTERY LED comes on when the battery state of charge is below 15%.
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Page 22: Double Door Freezer (Factory-Built Option)
Forma Scientific, Inc.________________________________________Enviro-Scan Monitor The user should immediately check the air filter (Figure 3-2) and the condenser for cleanliness and the fan for proper operation. Failure to do so may cause compressor damage and result in loss of the freezer contents. Refer to Section 6.1, "Cleaning the Condenser"... -
Page 23: Automatic Voltage Compensation System
Forma Scientific, Inc.________________________________________Enviro-Scan Monitor 3.8 Automatic Voltage Compensation System The Forma Ultra-Low Temperature Freezer is equipped with an automatic line voltage compensation system which monitors in-coming electrical power and automatically adjusts the voltage directed to the freezer power supply. This compensation system ensures that the compressor operates within specification and provides an additional margin of product protection. -
Page 24: Section 4 - Start-Up
ENTER key on the Enviro- Scan Monitor control panel. (The adjustment screwdriver is located on the bottom of the freezer frame. Refer to Figure 3-2.) Note: Forma Scientific recommends setting the cabinet temperature no colder than necessary for product storage. •... -
Page 25: To Display Or Change The High Limit Set Point
Forma Scientific, Inc.__________________________________________________Start-up • Press the ENTER key and the Low Limit temperature along with the word "SET LOW LIMIT" will be displayed in the LCD window. • Change the existing Low Limit temperature by pressing the UP or DOWN arrow keys. -
Page 26: Installing The Chart Paper
Forma Scientific, Inc.__________________________________________________Start-up The seven-day circular chart recorder is located on the bottom front of the freezer cabinet and is protected by a glass door. To prepare the recorder for operation, open the glass door and snap the connector onto the 9-volt battery as shown in Figure 4-1. If the freezer is operating, the green LED will show a steady light. -
Page 27: Calibrating The Chart Recorder
Forma Scientific, Inc.__________________________________________________Start-up 2. Press and hold for five seconds either button #1 or button #2. 3. Release the button and the green LED will begin to flash. Count the number of flashes to determine the present program setting. 4. To change the program setting, press the left or right arrows to increase or decrease the count. -
Page 28: Recorder Outlet
Note: The felt-tip pen on the CoBex recorder requires periodic replacement. Usually the ink will appear to fade before replacement becomes necessary. Additional pen tips may be purchased from Forma Scientific, Inc. Figure 4-4 Relay Enclosure showing... - Page 29 Forma Scientific, Inc.__________________________________________________Start-up Figure 4-5 Chamber Probe Cover and Vacuum Relief Assembly Figure 4-6 Locations of the Performance Alarm Monitor and Temperature Recorder Probes (Cover removed)
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Page 30: Section 5 - Calibration
Servicing must be performed by qualified service personnel only! The Enviro-Scan Temperature Monitor has been factory calibrated. The 8500 series freezer must be calibrated when the unit is at the low end of its operating temperature (-75°C,-86°C). The probe cannot be properly calibrated at ambient temperatures. -
Page 31: Calibrating The Control Set Point Temperature Probe
Forma Scientific, Inc.________________________________________________Calibration • Allow the freezer temperature to stabilize at its temperature set point. • Fully open the freezer door. • Open the bottom two inner doors and place the thermometer near the probe cover. • Allow the freezer chamber temperature to stabilize after closing the door. -
Page 32: Changing The Access Code
• Depress ENTER to change to the new code and return to the temperature display. Note: If the Access Code is changed and the new number combination is misplaced or forgotten, contact the Forma Scientific Service Department, 1-800-848-3080... -
Page 33: Section 6 - Routine Maintenance
The air-cooled condenser (the finned surface located in the center area of the refrigeration compartment) should be cleaned as often as necessary to ensure efficient compressor operation. Forma Scientific, Inc. recommends a minimum of twice a year. To clean the condenser, remove the front grill by grasping the assembly at the corners and gently pulling it away from the frame. -
Page 34: Cleaning The Air Filter
Remove the filter and wash it with a mild detergent. Dry it by pressing it between two towels. Should the filter become torn or excessively dirty, a replacement may be ordered from Forma Scientific, Inc. (Part # 760162). 6.4 Defrosting the Chamber The type of frost formed in the chamber is generally very soft and may be easily removed with a soft cloth. -
Page 35: Cleaning The Door Gasket
6.6 Cleaning the Vacuum Relief Port (Refer to Figures 6-1 and 6-2 also Figures 4-5 and 4-6) The vacuum relief port on the Model 8500 Series freezers is located in the lower left front of the chamber interior. Routinely check the vacuum relief port for frost accumulation and clean as necessary, using a soft cloth. -
Page 36: Replacing The Performance Monitor/Alarm Battery
For a consistent and dependable charge, replace the battery every 2-3 years. Replacement batteries must be of the re- chargeable type and are available from Forma Scientific, Inc. Refer to the parts list for stock number and description of the replacement batteries. -
Page 37: Section 7 - Service
Caution: Repair work should be performed only by personnel who have had prior experience with cascade refrigeration systems. Note: A service manual entitled "ULTRA-LOW REFRIGERATION SYSTEM SERVICE GUIDE" is available from Forma Scientific, Inc. Call or write for details. 7.2 Troubleshooting Guide The chart on the following page is intended as guide to troubleshooting the system. - Page 38 Forma Scientific, Inc.___________________________________________________Service...
- Page 39 Forma Scientific, Inc.___________________________________________________Service...
- Page 40 Forma Scientific, Inc.___________________________________________________Service...
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- Page 42 Forma Scientific, Inc.___________________________________________________Service...
- Page 43 Forma Scientific, Inc.___________________________________________________Service Symptom Possible Cause • No Power Light on Monitor. Power line cord disconnected. • Circuit breaker tripped/open. • Main power switch OFF. • Pin-connector not plugged into the monitor board. • Fuse open on Temp Control board •...
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Page 44: Section 8 - Specifications
Forma Scientific, Inc._________________________________________Specifications Section 8 - Specifications Specification Models 8516 and 8517 Temperature -50° C (-58°F) to -86° C (-123°F) Exterior 33.25" W x 79.0" H x 3.0" F-B Dimensions (85 cm x 201 cm x 94 cm) Interior 23.0" W x 51.5" H x 25.25" F-B... -
Page 45: Model 8523
Forma Scientific, Inc._________________________________________Specifications Specification Model 8523 Temperature -50° C (-58°F) to -86° C (-123°F) Exterior 40.75" W x 79.0" H x 71.0" F-B Dimensions (103.5 cm x 201.7 cm x 94.0 cm) Interior 30.6" W x 51.5" H x 25.25" F-B... -
Page 46: Models 8525 And 8526
Forma Scientific, Inc._________________________________________Specifications Specification Models 8525 and 8526 Temperature -50° C (-58°F) to -86° C (-123°F) Exterior 33.25" W x 79.0" H x 31.0" F-B Dimensions (85 cm x 201cm x 79 cm) Interior 23.0" W x 51.5" H x 19.25" F-B Dimensions (58 cm x 131 cm x 48.9 cm) -
Page 47: Model 8560
Forma Scientific, Inc._________________________________________Specifications Specification Model 8560 Temperature -50° C (-58°F) to -86° C (-123°F) Exterior 33.3" W x 78.8" H x 31.0" F-B Dimensions (84.6 cm x 200.1 cm x 78.7 cm) Interior 23.3" W x 51.5" H x 19.3" F-B Dimensions (58.4 cm x 130.8 cm x 49.0 cm) -
Page 48: Section 9 - Spare Parts
Forma Scientific, Inc.______________________________________________Spare Parts Section 9 - Spare Parts Models 8516, 8517, 8523, 8525, 8526 and 8560 Stock # Description 190671 Temperature Control Board 400101 Thermostat 40°C 400863 Monitor Board (Wired) 290041 Temperature Monitor Probe 400064 Battery 6V, 8 AH (Rechargeable) - Page 49 Forma Scientific, Inc.______________________________________________Spare Parts 290041 Control Probe...
- Page 50 Forma Scientific, Inc.______________________________________Refrigeration Drawings Section 10 - Refrigeration Drawings 10-1...
- Page 59 Forma Scientific, Inc.________________________________________Electrical Schematics Section 11 - Electrical Schematics 11-1...
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