Thermo Forma Power Plus 8500 Series Operating instructions

Models:
8515 and 8520
8580 and 8583
Power Plus™
Upright Freezers
17 and 23 cu. ft. capacity
Operating and Maintenance Manual
Manual No: 7028515 Rev. 7

Model 8515 Series ________________________________________________________________________________
i
Read This Instruction Manual.
Failure to read, understand and follow the instructions in
this manual may result in damage to the unit, injury to operat-
ing 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 back of this manual.
The material in this manual is for information purposes
only. The contents and the product it describes are subject to
change without notice. Thermo Forma makes no representations
or warranties with respect to this manual. In no event shall
Thermo Forma be held liable for any damages, direct or inciden-
tal, arising out of or related to the use of this manual.
MANUAL NUMBER 7028515
-- 21210/FR-1661 12/4/02 Added vacuum relief port information ccs
7 20820/FR-1619 6/3/02 Corrected line side wiring in the boost/buck relay aks
-- 20684/FR-1596 3/28/02 Added sample pull-down chart after specs ccs
6 20251/FR-1526 2/22/02 Cordset connector aks
-- 19785/FR-1482 1/23/01 Added where-used to schematics ccs
-- 19363/FR-1429 10/19/00 New thermostat condenser hot temp to 43°C ccs
5 19151/FR-1384 7/21/00 Resize cabinet (RICH) aks
-- 18249/SI-7545 7/7/99 Added P/N 195517 air filter kit to parts list ccp
4 -- 11/9/98 Added battery change frequency in Section 3.2/E. Dutton ccp
REV ECR/ECN DATE DESCRIPTION By
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION

Model 8515 Series ________________________________________________________________________________
ii
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. Lire attentivement le texte d'accompagnement.
Wichtige Betriebs- und/oder Wartungshinweise. Lesen Sie den nachfolgenden Text sorgfältig.
Importante instruccions de operacion y/o mantenimiento. Lea el texto acompanante cuidadosamente.
Potential electrical hazards. Only qualified persons should perform procedures associated with this symbol.
Ce symbole attire l'attention de l'utilisateur sur des risques électriques potentiels. Seules des personnes qualifiées
doivent appliquer les instructions et les procédures associées à ce symbole.
Gefahr von Stromschlägen. Nur qualifizierte Personen sollten die Tätigkeiten ausführen, die mit diesem Symbol beze-
ichnet sind.
Potencial de riesgos electricos. Solo personas das capacitadadas deben ejecutar los procedimientos asociadas con este
simbulo.
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.
Geräte, an denen Wartungs- oder Servicearbeiten durchgeführt werden, müssen abgeschaltet und abgeschlossen wer-
den, um Verletzungen zu vermeiden.
El equipo recibiendo servicio o mantenimiento debe ser apagado y segurado para prevenir danos.
Hot surface(s) present which may cause burns to unprotected skin, or to materials which may be damaged by elevated
temperatures.
Présence de surface(s) chaude(s) pouvant causer des brûlures sur la peau non protégée, ou sur des matières pouvant
être endommagées par des températures élevées.
Heiße Oberfläche(n) können ungeschützter Haut Verbrennungen zufügen oder Schäden an Materialien verursachen,
die nicht hitzebeständig sind.
Superficias calientes que pueden causar quemaduras a piel sin proteccion o a materiales que pueden estar danados
por elevadas temperaturas.
√ Always use the proper protective equipment (clothing, gloves, goggles, etc.)
√ Always dissipate extreme cold or heat and wear protective clothing.
√ Always follow good hygiene practices.
√ Each individual is responsible for his or her own safety.

Model 8515 Series ________________________________________________________________________________
iii

Model 8515 Series ________________________________________________________________________________
iv
Table of Contents
Section 1 - Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
1.1 Preliminary Inspection . . . . . . . . . . . . . . . . . . . . . . .2 - 1
1.2 Visible Loss or Damage . . . . . . . . . . . . . . . . . . . . . .2 - 1
1.3 Responsibility for Shipping Damage . . . . . . . . . . . .2 - 1
Section 2 - Installation and Start-Up . . . . . . . . . . . . . .2 - 1
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
a. Enviro-Scan Microprocessor Monitoring System .2 - 1
b. Refrigerants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
c. Peak Control System . . . . . . . . . . . . . . . . . . . . . . .2 - 2
d. “Smart” Condenser Fans . . . . . . . . . . . . . . . . . . . .2 - 2
e. Built-In Automatic Voltage Compensation . . . . . .2 - 2
2.2 Environmental Conditions . . . . . . . . . . . . . . . . . . . .2 - 2
2.3 Unpacking List . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 2
2.4 Removing the Compressor Wedge Assemblies . . . .2 - 2
2.5 Installing the Wall Bumpers . . . . . . . . . . . . . . . . . . .2 - 3
2.6 Moving the Unit Through a Doorway . . . . . . . . . . .2 - 3
2.7 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 3
2.8 Attaching the Power Cord . . . . . . . . . . . . . . . . . . . .2 - 3
2.9 Connecting Power to the Freezer . . . . . . . . . . . . . . .2 - 3
2.10 Deactivating the Enviro-Scan Monitor for Storage .2 - 4
2.11 RS-232 Output Interface . . . . . . . . . . . . . . . . . . . . .2 - 4
2.12 Remote Alarm Connector . . . . . . . . . . . . . . . . . . . .2 - 4
2.13 Setting the Operating Temperature . . . . . . . . . . . . .2 - 5
2.14 Setting the Low and High Limit Set Points . . . . . .2 - 5
a. To Display or Change the Low Limit Set Point . .2 - 5
b. To Display or Change the High Limit Set Point .2 - 5
2.15 General Recommendations . . . . . . . . . . . . . . . . . . .2 - 5
2.16 Preparing the (optional) CoBex Temp Recorder . . .2 - 6
a. Installing the chart recorder battery . . . . . . . . . . .2 - 6
b. Installing the chart paper . . . . . . . . . . . . . . . . . . .2 - 6
c. Changing the recorder range . . . . . . . . . . . . . . . . . . . .
d. Calibrating the chart recorder . . . . . . . . . . . . . . . .2 - 6
e. Recorder Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7
Section 3 - Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1
3.1 The Enviro-Scan Monitor . . . . . . . . . . . . . . . . . . . . .3 - 1
3.2 Main Power Switch (mains disconnect) . . . . . . . . . .3 - 1
3.3 Key Functions Requiring No Access Code . . . . . . . .3 - 1
a. Access Keys: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 2
3.4 Key Functions Requiring the Access Code . . . . . . . .3 - 2
3.5 Audible Alarm and Control Panel Indicators . . . . . .3 - 2
3.6 Double Door Freezer (Factory-Built Option) . . . . . .3 - 3
3.7 Set Point Adjustment Screwdriver . . . . . . . . . . . . . .3 - 3
3.8 Automatic Voltage Compensation System . . . . . . . . .3 - 3
3.9 Cobex Temperature Recorder (optional) . . . . . . . . . .4 - 1
Section 4 - Calibration . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
4.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
4.2 Calibrating the Temperature Alarm Monitor Probe . .4 - 1
4.3 Calibrating Control Set Point Temperature Probe . . .5 - 1
4.4 Changing the Access Code . . . . . . . . . . . . . . . . . . . .5 - 1
Section 5 - Routine Maintenance . . . . . . . . . . . . . . . . . .5 - 1
5.1 Cleaning the Cabinet Exterior . . . . . . . . . . . . . . . . . .5 - 1
5.2 Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . .5 - 1
5.3 Cleaning the Air Filter . . . . . . . . . . . . . . . . . . . . . . . .5 - 2
5.4 Defrosting the Chamber . . . . . . . . . . . . . . . . . . . . . . .5 - 2
5.5 Cleaning the Door Gasket . . . . . . . . . . . . . . . . . . . . .5 - 2
5.6 Cleaning the Vacuum Relief Port . . . . . . . . . . . . . . . .5 - 2
5.7 Replacing the Performance Monitor/Alarm Battery .6 - 1
Section 6 - Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 1
6.1 Servicing the Refrigeration System . . . . . . . . . . . . . .6 - 1
6.2 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . .6 - 1
6.3 Cabinet Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 1
Section 7 - Specifications . . . . . . . . . . . . . . . . . . . . . . . .7 - 1
Section 8 - Spare Parts List . . . . . . . . . . . . . . . . . . . . . .8 - 1
Section 9 - Refrigeration Schematics . . . . . . . . . . . . . . .9 - 1
Section 10 - Assembly Drawings . . . . . . . . . . . . . . . . .10 - 1
Section 11 - Electrical Schematics . . . . . . . . . . . . . . . .11 - 1

Section 1 - Receiving
1.1 Preliminary Inspection
The freezer was thoroughly inspected and carefully packed
prior to shipment and all necessary precautions were taken to
ensure safe arrival of the merchandise at its destination.
Immediately upon receipt, before the unit is moved from the
receiving area, carefully examine the shipment for loss or dam-
age. Unpack the shipment and inspect both interior and exterior
for any in-transit damage.
1.2 Visible Loss or Damage
If any loss or damage is discovered, note any discrepancies
on the delivery receipt. Failure to adequately describe such evi-
dence of loss or damage may result in the carrier refusing to
honor a damage claim. Immediately call the delivering carrier
and request that their representative perform an inspection. Do
not discard any of the packing material or move the shipment
from the receiving area.
1.3 Responsibility for Shipping Damage
For products shipped F.O.B. Marietta, Ohio, the responsi-
bility of Thermo Forma ends when the merchandise is loaded
onto the carrier’s vehicle.
On F.O.B. Destination shipments, Thermo Forma’s and the
carrier’s responsibility ends when your Receiving Department
personnel sign a free and clear delivery receipt.
Whenever possible, Thermo Forma will assist in settling
claims for loss or in-transit damage.
Section 2 - Installation/Start-Up
2.1 Introduction
The Thermo Forma Power Plus™ non-CFC, Ultra-Low
Temperature Freezers feature front-to-back air circulation for
cooler compressor temperatures, increased performance and
reliability and longer compressor life. In this unique system,
ambient air enters the front grille of the freezer and passes
through the filter, condenser and compressor housing, exiting
out of the rear of the unit.
The semi-hermetic compressors provide for increased
reserve BTU removal and quicker temperature recovery.
An enlarged condenser and two cooling fans contribute to
better efficiency, even in high ambient conditions. Oversize
condensers also help extend compressor life. Cleaning the air
filter and condenser fins is done from the front of the unit.
Other important features of the Thermo Forma Power Plus™
Freezers are:
a. Enviro-Scan Microprocessor Monitoring
System
Enviro-Scan uses a digital display, audible and visual indi-
cators and a touch sensitive key pad to provide total control of
all freezer functions. The module digitally displays chamber
temperature and control setpoint, to the nearest degree C. High
and low alarm set points are easily programmed. A back-up bat-
tery system supplies power to the monitoring system during
electrical outages.
An RS-232 port provides a computer interface and moni-
toring of temperatures and alarms. A remote alarm connector is
also a standard feature.
b. Non-CFC, non-HCFC and non-flammable
refrigerants
Committed to a safer, healthier environment, Thermo
Forma has phased out the use of ozone depleting CFC (chloro-
fluorocarbons) in all of the company’s refrigerated products.
Thermo Forma also uses non-CFC foamed-in-place urethane
insulation and all packaging materials used in shipping are non-
CFC.
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 1

c. Peak Control System
Due to the increased demands on today’s refrigeration sys-
tems, Forma Scientific has engineered a compressor protection
system called PEAK Control. In this system, a pressure switch
senses excessive compressor discharge pressure. When the dis-
charge pressure exceeds the design limit, a solenoid valve
opens allowing refrigerant to enter an expansion tank. The
refrigerant returns to the system through a capillary tube. The
PEAK Control System continues to monitor system pressures,
insuring they stay within design limits to help extend compres-
sor life.
d. “Smart” Condenser Fans
For maximum compressor protection, all Forma ULT freez-
ers include two tube axial fans in the compressor housing.
When both compressors are running, both fans operate to pull
ambient air through the condenser and over the compressors.
When both compressors are off, one fan remains ready to cycle
on when the thermostat senses a temperature rise above 32°C.
e. Built-In Automatic Voltage Compensation
A built-in, automatic voltage compensator is built into
every Forma 8500 Series non-CFC, Ultra-Low Temperature
Freezer to detect and respond to high or low voltage situations.
Voltage from the incoming power supply is monitored and
adjusted by the automatic voltage compensator, ensuring com-
pressor operation within design parameters. A light on the front
of the control panel indicates when incoming voltage is being
corrected.
An enlarged condenser and two temperature controlled
cooling fans also contribute to better efficiency, even in high
ambient conditions.
2.2 Environmental Conditions
The Thermo Forma Power Plus™ ULT Freezers are
designed to operate in the following environmental conditions:
• Indoors
• Altitude - up to 2,000 meters
• Temperature - 5°C to 40°C
• Humidity - 80% RH at or below 31°C, decreasing linearly
to 50% RH at 40°C
• Mains Supply Fluctuations - ± 10% of nominal
• Installation Category II 1
• Pollution Degree 2 2
• Class of Equipment I
• Climatic Class T (Tropical)3
__________________________________________
1Installation category (overvoltage category) defines the level
of transient overvoltage which the instrument is designed to
withstand safely. It depends on the nature of the electricity sup-
ply and its overvoltage protection means. For example, in CAT
II which is the category used for instruments in installations
supplied from a supply comparable to public mains such as
hospital and research laboratories and most industrial laborato-
ries, the expected transient overvoltage is 2500V for a 230V
supply and 1500V for a 120V supply.
2Pollution degree describes the amount of conductive pollu-
tion present in the operating evironment. Pollution degree 2
assumes that normally only non-conductive pollution such as
dust occurs with the exception of accasional conductivy caused
by condensation.
3Class T (Tropical) means that the freezers are electrically
safe in a 43°C ambient.
2.3 Unpacking List
A small bag containing the following accessories is packed
inside the freezer:
Qty. Stock # Description Purpose
2 510016 1/4-20 x 5-1/2” Bolt Wall Bumper
2 380520 Neoprene Cap Cap Protector
1 235013 Screwdriver Set
1 435051 8-3/4” Phillips Screwdriver
1 444062 Box end ratchet wrench Loosen shipping
bolts
1 34040 Key ring
2.4 Removing the Compressor Wedge Assemblies
The wedge assemblies, securing both compressors
for shipment, must be removed before putting the
freezer into service. Failure to follow these
instructions may damage the freezer and void the
warranty.
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 2

1. Make sure the freezer is not connected to electrical
power.
2. Using a Phillips screwdriver remove the lower right side
and rear panels.
3. Remove the box end ratchet wrench from the parts bag.
4. Both compressors are secured with wedges, connected
by threaded rods, secured on both ends of the rods.
Figure 2-1
Rear Compressor Section
5. Working from the back of the compressor section, use
the wrench to remove the nut and washer securing the
wedge on the threaded rod. Remove the rear wedge.
6. Rotate the threaded rod counterclockwise to remove it
from the front wedge. Remove the front wedge. Discard
these packing materials (wedges, rods, nuts and wash-
ers).
7. Repeat these last two steps to remove the wedge assem-
bly from the second compressor.
8. Replace the side and rear panels.
2.5 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. Refer to
Figure 2-3. Install a neoprene cap on each bolt.
If the bumpers are removed, they must be rein-
stalled before the freezer is placed in the desired
location to ensure adequate ventilation and air-
flow for the compressor.
For proper ventilation and air flow, a minimum of 5” of
clear space is required behind the freezer. an additional 5”
(minimum) of clear space is also required on both sides of the
freezer. when locating the back of the freezer toward a wall or
obstacle(s), make sure that the wall bumpers are installed.
2.6 Moving the Model 8520 Through a Doorway
To move the Model 8520 through a 34.50” doorway, the
door stop bracket(s) must be removed. The single door units
have one door stop at the top right side of the unit. Double door
units have a second door stop at the bottom right side of the
unit. Using a 7/16” socket wrench, remove the two screws
securing each bracket. This permits the door(s) to be fully
opened so that the freezer can be moved through the doorway.
Remove the door stop bracket screws only.
Removing hinge screws will weaken the door, or
cause it to fall, and may result in injury to per-
sonnel and/or damage to the freezer.
2.7 Location
Locate the freezer on a firm, level surface in an area of
minimum ambient temperature fluctuation.
2.8 Attaching the Power Cord
1. Insert the power cord into the power outlet module (A).
2. Tighten screws (B) on the power cord retainer.
2.9 Connecting Power to the Freezer
Thermo Forma 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 or to the electrical specifications listed in
Specifications.
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 3
Remove Side and
Rear Panels
Remove Nut from Threaded Rod
(both compressors)
Figure 2-2

2.10 Deactivating the Enviro-Scan Monitor for
Storage
The Enviro-Scan Monitor has been deactivated (placed in a
sleep mode) prior to shipment. The monitor activates when
power is applied to the freezer. If electrical power is lost or the
freezer is disconnected, the monitor will be sustained by the
battery back-up.
Whenever the freezer is unplugged for storage,
the “Enviro-Scan” must be de-activated to pre-
serve the life of the battery and preserve the war-
ranty.
1. Turn off or unplug the freezer.
2. Obtain the access code prompt by pressing the UP
ARROW key and the BATTERY % CHARGE key
simultaneously. a “1” must appear in the display win-
dow. If “1” does not appear in the window, repeat step 2.
3. Enter the four digit access code. The Access Code set at
the factory - 1, 2, 3, 4. For Access Code information,
refer to Section 3.2. To change the Access Code, refer to
Section 4.4.
4. After entering the four-digit Access Code, press the
ENTER key and “CAL” will appear in the window.
5. Press the DOWN ARROW key.
6. The Enviro-Scan monitor is now deactivated (placed in
a sleep mode) until electrical power is restored.
2.11 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 terminal” for-
matted, which permits interfacing with either a computer or a
serial printer.
Three wires are used for the RS-232 interface:
1) TX Data = Pin 2
2) RX Data = Pin 3
3) Signal Ground = Pin 7
The data format is seven-bit ASCII with a leading zero (8th
bit). Each character is transmitted with one start-bit, eight data-
bits, and two stop-bits, totaling eleven bits. NO parity-bit is
included. Baud rate is 1200.
A data transfer sequence is transmitted according to the fol-
lowing format. X refers to the variable numerical temperature
data.
(NUL) (-) XXX (SP) C (SP) (OVERTEMP) (SP) (LF) (CR)
(EOT) (SP) (UNDER TEMP )
The words “OVERTEMP” or “UNDER TEMP” are trans-
mitted with the temperature if one of those conditions exists at
the time the data is transmitted. When there is no alarm condi-
tion, spaces will be sent instead so that there is always a total of
20 characters sent.
SP - space
LF - line feed
CR - carriage return
EOT - end of text
NUL - null character (00)
The Enviro-Scan Monitor transmits temperature and alarm
condition data when power is first applied to the monitor, then
once every hour.
The Enviro-Scan Monitor responds to two ASCII com-
mands from the remote: DC1 (XON) and DC3 (XOFF)
DC1 (11H): The Enviro-Scan Monitor will transmit tem-
perature and alarm condition data upon receipt of DC1 and
resume 60 minute interval transmissions if they had been inhib-
ited by a DC3.
DC3 (13H): Receiving a DC3 from the remote inhibits the
Enviro-Scan Monitor from sending serial data indefinitely until
a DC1 is received or monitor power is removed and then reap-
plied.
Figure 2-4 identifies the location of the RS-232 output con-
nector.
Component Locations on Freezer Rear Panel
Figure 2-3
2.12 Remote Alarm Connector
For installations requiring remote temperature monitoring
or high/low temperature alarm systems, a remote connector is
provided on all Thermo Forma 8500 Series Upright Freezers.
Figure 2-3 identifies the location of the remote alarm connector,
Figure 2-4 identifies the pin output. (A label on the back of the
freezer cabinet also contains this information.)
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 4
Remote Alarm
Connector
RS-232 Output
Connector
Power
Switch
Accessory
Wire
Feed-through
Line
Cord

The alarm contacts are rated:
0.5A at 30VDC, 15 watts maximum.
0.6A at 24 VAC, 14 watts maximum
Key
Pin # Description
1 Over temperature Common
2 Over temperature N.C.
3 Over temperature N.O.
4 Millivolt Out (Positive +)
5 Under temperature N.C.
6 Millivolt Out (Negative -)
7 Under temperature Common
8 Under temperature N.O.
9 (Not Used)
10 (Not Used)
2.13 Setting the Operating Temperature
1. Turn the freezer on. The cabinet temperature will be
displayed in the LCD window.
2. Press the CONTROL SET POINT key and a “1” will
appear in the LCD window.
3. Enter access code (1,2,3,4). The “1” will remain in the
LCD window.
4. Press the ENTER key and the word “SET”, along with
the control set point temperature will be displayed in the
LCD window.
5. If an operating temperature other than that displayed in
the window is desired, turn the temperature set point
screw using the adjustment screwdriver. The set point
screw is located to the right of the 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: Thermo Forma recommends setting the cabinet tempera-
ture no colder than necessary for product storage.
6. Press the ENTER key and the LCD display will return
to the cabinet temperature.
2.14 Setting the Low and High Limit Set Points
The High Limit set point is factory-set at -65° C. The Low
Limit set point is set at 3° below the operating temperature. If
another temperature limit set point is desired, set as follows:
a. To Display or Change the Low Limit Set Point
1. Press the LOW LIMIT key and a “1” will appear in the
LCD window.
2. Enter the access code (1,2,3,4).
The “1” will remain in the LCD window.
3. Press the ENTER key and the Low Limit temperature
along with the word “SET LOW LIMIT” will be dis-
played in the LCD window.
4. Change the existing Low Limit temperature by pressing
the UP or DOWN arrow keys.
5. Press the ENTER key and the LCD display will return
to cabinet temperature.
b. To Display or Change the High Limit Set Point
1. Press the HIGH LIMIT key and a “1” will appear in the
LCD window.
2. Enter access code (1,2,3,4).
A “1” will remain in the LCD window.
3. Press the ENTER key and the existing High Limit along
with the word “SET HIGH LIMIT” will be displayed in
the LCD window.
4. Change the existing HIGH LIMIT by depressing either
the UP or DOWN arrow keys.
5. Press the ENTER key and the LCD display will return
to cabinet temperature.
2.15 General Recommendations
Avoid opening the door for extended time periods. Room
air, which is higher in humidity, will replace chamber air and
cause frost to develop. allowing the door to remain open for
extended time periods will cause the chamber to “warm-up”,
putting undue stress on the compressors.
This unit is not a “quick-freeze” device. Freezing large quan-
tities of liquid, or high-water content items, will temporarily
increase the temperature and will cause the compressors to
operate for a prolonged time period. damage to the compres-
sors may result and product safety may be jeopardized.
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 5
Figure 2-4
Caution! Stored product should be
protected by an activated alarm system
capable of initiating a timely response
24 hours/day. Forma Alarms provide
interconnect for centralized monitoring .

2.16 Preparing the (optional) CoBex Temperature
Recorder
a. Installing the chart recorder battery
The seven-day circular chart recorder is located on the bot-
tom 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 2-5. If the freezer is operating, the green LED will show
a steady light. If the freezer is not turned on, the LED will
flash.
If the battery is weak or not connected, the green LED will
flash. If power is lost to the cabinet, the LED will also flash
as the Alarm/Monitor goes into the alarm state.
b. Installing the chart paper
(Refer to Figure 2-6) Press and hold
button #3 for about one second until the
pen begins to move to the left. Unscrew
the knob at the center of the chart and
install the paper, positioning the chart so
the correct time line coincides with the
time line grove on the chart plate.
Replace the knob and press the #3 button
until the pen begins to move to the right.
c. Changing the recorder range
The chart recorder contains eight temperature ranges and is
factory-programmed for the freezer. (Refer to Figure 2-6)
1. Press and hold button #3 for one second, then let the pen
move off of the chart paper.
2. Press and hold for five seconds either button #1 or but-
ton #2.
3. Release the button and the green LED will begin to
flash. Count the number of flashes to determine the pres-
ent program setting.
4. To change the program setting, press the left or right
arrows to increase or decrease the count.
5. When the desired program number is flashing, press the
change chart button to bring the pen arm back onto the
chart. Recording will begin in the new program.
Note: Changing ranges may require an offset calibration as
outlined in the following procedure. See the CoBex Instruction
Manual.
Program No. Range
Program 1 -40°C to 30°C
Program 2 0°C to 60°C
Program 3 -100°C to 38°C
Program 4 -5°C to 50°C
Program 5 0°C to 100°C
Program 6 -100°C to -200°C
Program 7 -115°C to 50°C
Program 8 -10°C to 70°C
d. Calibrating the chart recorder
Place an accurate thermometer in the chamber next to the
recorder’s probe. After about three minutes, compare the ther-
mometer with the chart recorder. If an adjustment is necessary,
press either the #1 or #2 button to move the pen left or right.
The button must be held about five seconds before the pen
begins to move. Release the button when the pen matches the
thermometer.
Temperature probes for the CoBex Recorder and for the
Enviro-Scan monitor are located in the left front corner of the
freezer chamber. Figures 2-7, 2-9, and 2-10 illustrate the tem-
perature probes and the probe cover.
Note: The felt-tip pen on the CoBex recorder requires periodic
replacement. Usually the ink will appear to fade before replace-
ment becomes necessary. Additional pen tips may be purchased
from Thermo Forma.
Model 8515 Series __________________________________________________________________Installation and Start-Up
2 - 6
12
3
9-volt Battery
Program selection and
calibration buttons
Green LED
Time line
Figure 2-5
Figure 2-6

e. Recorder Outlet
The 115VAC recorder outlet is
located at the end of the relay
enclosure. Refer to Figure 2-8.
The outlet is only to be used for
CoBex recorders supplied by
Thermo Forma.
Model 8515 Series __________________________________________________________________Installation and Start-Up
Figure 2-7
Vacuum
relief heater
fuse:0.15 amp
Electrical
cable
feed-through
Electrical outlet
for recorder
Relay enclosure
FUSE
Figure 2-8
2 - 7
Figure 2-10
Figure 2-9

Section 3 - Operation
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
1°C.
Some functions of the Enviro-Scan Monitor require the
entry of a four digit security code to access, display or change
them. Access code 1,2,3,4 is programmed into each unit at the
factory. This code may be changed to any four digit combina-
tion of the numbers 1,2,3, and 4. (Section 4.4 describes the pro-
cedures to change the Access Code.)
Functions requiring no access code are:
Alarm Silence Power Line Voltage
Enter Low Alarm Test
Standby High Alarm Test
Battery Charge Battery Test
Other features include:
Over Temp light Under Temp light
Standby light Low Battery light
Door Ajar light Power light
Power Failure light Condenser Hot light-hidden
3.2 Main Power Switch (mains disconnect)
The main power switch is located on the back of the refrig-
eration unit, directly above the line cord.
Off = (o) On = (|)
3.3 Key Functions Requiring No Access Code
(Refer to Figure 3-1)
Displays the Enviro-Scan Monitor backup
battery’s percent of charge. The reading gives
some indication of how long the monitor will
operate on battery backup. The Backup system
is designed to maintain monitor operation for at least 72 hours.
a reading of 50%, when on battery power, indicates that the
monitor will run for approximately 36 hours.
The Battery % Charge may not indicate the full number of
hours of monitor backup power. The % of charge can vary
depending on the age, usage and condition of the battery. For
a consistent and dependable charge, replace the battery every
2 years.
Silences all alarms for approximately 30
minutes and changes the display to cabinet tem-
perature.
Displays cabinet temperature. This key is
also used for functions requiring the access
code.
Displays the operating voltage of the
freezer when both compressors are running. A
zero will be displayed on the LCD when the
line voltage reading drops below 100 volts on a
208/220 volt circuit (50 volts on a 115 volt circuit).
Model 8515 Series ______________________________________________________________________________Operation
3 - 1
Battery
% Charge
Silence
Alarm
Enter
Power
Line
Voltage

The standby key silences the audible alarm
after an alarm condition or a power failure. The
standby key will silence the audible alarm only.
The alarm light will stay on until the alarm condition has been
corrected. A built-in ring-back feature audibly signals that the
unit has returned to normal set point limits. Press the STAND-
BY key to remove the audible tone.
The low 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. If within limits, the alarm will be activated when the
probe temperature drops below the low alarm limit. The test
may be aborted at any time by pressing ENTER. All other key
functions are “locked-out” during this test.
The high 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. If within limits, the probe will be heated until it reaches
the alarm limit and the alarm will be activated. The probe will
then gradually cool back to the actual cabinet temperature. The
test may be aborted at any time by pressing ENTER. All other
key functions are “locked-out” during this test.
Disconnects the main power from the
monitor, making it switch and operate on bat-
tery power.
a. Access Keys:
Keys 1,2,3 and 4 are used for the entry of the four digit
Access Code.
3.4 Key Functions Requiring the Access Code
(refer to Figure 3-1)
Pressing the up arrow key will increase
the display by increments of one division. If
this key is held down for more than two sec-
onds the display will increment automatically.
Note: The up and down arrow keys are used for setting the high
and low limits and all calibration functions.
Pressing the down arrow key will decrease
the display by increments of one division. If
this key is held down for more than two sec-
onds the display will increment automatically.
The low limit key is used to establish a
Low Limit set point. When the chamber tem-
perature 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, locat-
ed on the back of freezer, will also be activated. Refer to
Section 2.14 for Low Limit setting instructions.
The high limit key is used to establish a
High Limit set point. When the chamber tem-
perature reaches, or exceeds, the High Limit set
point, the audible alarm will sound and the
OVER TEMP indicating light will come on. The remote alarm
contacts, located on the back of the freezer, will also be activat-
ed. Refer to Section 2.14 for High Limit setting instructions.
After depressing this key and entering the
access code, the setting for the temperature
control will appear in the display. The control
setting is adjusted by turning the Set Point
Adjusting Screw located on the far right of the monitor panel.
Note: When in a battery backup condition (AC power off), the
control set point value is replaced with “—” to prevent false
data from being displayed. Press ENTER to return to the tem-
perature display.
Set Point Adjustment Screw located to the right of
the ENTER key is used to set the operating temperature
of the freezer. An adjustment screwdriver is located on
the back panel of the compressor section. (See Figure 3-2 and
Figure 2-1).
3.5 Audible Alarm and Control Panel Indicators
Audible alarm:
Provides a pulsing audible tone whenever an alarm condi-
tion is present. The DOOR AJAR audible alarm has a 30 sec-
ond delay to prevent nuisance alarms when the door is opened.
Pressing the ALARM SILENCE key will silence all alarms for
30 minutes.
Note: When in STANDBY mode, the audible alarm is silent
until all alarm conditions are cleared. Audible alarm conditions
include OVER TEMP, UNDER TEMP, DOOR AJAR and AC
power failure.
Over Temp (LED):
Flashes when an over temperature condition
exists.
Under Temp (LED):
Flashes when an under temperature condition
exists.
Standby (LED):
Lights when in standby mode.
Model 8515 Series ______________________________________________________________________________Operation
3 - 2
Standby
Low
Alarm
Test
High
Alarm
Test
Test
Battery
Limit
Low
Limit
High
Setpoint
Control

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%.
Door Ajar (LED):
Flashes when the freezer lid is open.
Power (LED):
Lights when the AC power is on. Out when
the AC power is off.
Power Failure (LED):
Lights when power is removed from the unit.
Press Silence or Standby to silence the audible
alarm. Deactivate the Enviro-Scan Monitor if unit is to be
turned off for more than five hours. (Refer to Section 2.9)
The words Condenser Hot will
appear in the alpha-numeric display
and a audible alarm will sound for 12
seconds every 15 minutes when the
thermostat on the condenser reaches 43°C. This condition typi-
cally indicates a clogged condenser, fan failure, dirty filter or
high ambient temperature conditions. The audible alarm is
silenced only by correcting the problem causing the alarm.
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 5.2,
“Cleaning the Condenser” and Section 5.3,
“Cleaning the Air Filter”.
3.6 Double Door Freezer (Factory-Built Option)
Double door models of the Thermo Forma ULT freezers
are available as a factory-built option. These freezers reduce the
amount of temperature loss by allowing longer term material to
be stored in the bottom portion of the freezer and more fre-
quently accessed short term material to be stored on the upper
shelves. Operation of the double door freezers is the same as
single door models.
Stock # 189757 - 13 cu. ft. models, 120 VAC
Stock # 189759 - 13 cu. ft. Models, 220 VAC
Inventory rack ordering information for 13 cu. ft. (368
liters) models is listed below.
Order No. Description Max Qty per Chamber
189771 Rack includes 8
(9) 3” boxes for
top chamber
189795 Rack includes 8
(12) 2” boxes for
top chamber
Dimensions: 5.5”W x 9.7”H x 16.1”F-B
(14.0cm x 24.6cm x 40.9cm)
820009 Rack includes 8
(9) 3” boxes for
bottom chamber
820015 Rack includes 8
(15) 2” boxes for
bottom chamber
Dimensions: 5.5”W x 10.9”H x 16.5”F-B
(14.0cm x 27.4cm x 41.9cm)
3.7 Set Point Adjustment Screwdriver
A small screwdriver,
located on the lower left
side of the freezer frame,
is used to set the tempera-
ture set point. To remove
the screwdriver from its
holder, pull downward on
the black knob located
directly below the temper-
ature recorder compart-
ment. The knob is the
handle of the screwdriver.
Refer to Figure 3-2.
3.8 Automatic Voltage Compensation System
The Thermo Forma Power Plus™ Ultra-Low Temperature
Freezers are equipped with an automatic line voltage compen-
sation system to monitor in-coming electrical power and auto-
matically adjust the voltage to the freezer. This compensation
system ensures that the compressors operate within specifica-
tion and provides an additional margin of product protection.
A green Voltage Compensation indicator lights when the
system is operating.
Model 8515 Series ______________________________________________________________________________Operation
3 - 3
CondenserHot
Figure 3-2

3.9 Cobex Temperature Recorder (optional)
Operation of the recorder chart drive is automatic when
power is applied to the freezer. In the event of a power failure,
the 9 volt back-up battery will allow the recorder to sense and
record temperature for about 24 hours. Refer to Section 2.16
and the Cobex instructions included in this manual.
Section 4 - Calibration
4.1 Calibration
Calibration of the freezer control system is done from the
monitor keypad. Access to the calibration mode requires entry
of the four digit access code.
Note: The access code (1,2,3,4) is assigned at the factory.
To obtain the access code prompt, simultaneously press the
UP ARROW key and the BATTERY %CHARGE key.
Note: The keys must be pressed firmly and at the same time.
When this has been done correctly, a “1” will appear in the
display window. After keying in the access code, press ENTER
and “CAL” will appear in the display. At this point, the parame-
ter to be calibrated may be selected by pressing its associated
display function key.
Note: When changing calibration values, pressing the up or
down arrow keys for more than two seconds will cause the dis-
played value to increment automatically.
4.2 Calibrating the Temperature Alarm Monitor Probe
Servicing must be performed by qualified service
personnel only!
The Enviro-Scan Temperature Monitor has been factory
calibrated.
The 8515 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.
Equipment needed: Accurate low temperature thermometer.
1. Allow the freezer temperature to stabilize at its tempera-
ture set point.
2. Fully open the freezer door.
3. Open the bottom two inner doors and place the ther-
mometer near the probe cover.
4. Allow the freezer chamber temperature to stabilize after
closing the door.
5. Obtain the prompt for the Access Code by pressing the
up arrow and the Battery %Charge keys simultaneously.
A “1” will appear in the display window. If a “1” does
not appear in the window, push the keys again.
6. Enter the four digit Access Code.
Model 8515 Series ______________________________________________________________________________Calibration
4 - 1

7. Press Enter. “CAL” will appear in the display.
8. Press Enter again and the temperature measured by the
alarm monitor probe will be displayed.
9. Remove the thermometer from the freezer chamber and
compare the displayed reading with the thermometer.
10. If the two temperature readings do not agree, match
them by pressing the Up and Down Arrow keys.
11. Press Enter to return to the normal temperature display.
4.3 Calibrating Control Set Point Temperature Probe
1. Obtain the prompt for the Access Code by pressing the
up arrow and the Battery %Charge keys simultaneously.
A “1” will appear in the display window. If a “1” does
not appear in the window, push the keys again.
2. Enter the four digit access code.
3. Press Enter. “CAL” will appear in the display.
4. Press the Control Set Point key to display the cabinet
temperature measured by the control probe.
5. Compare this reading with the thermometer.
6. If the two temperature readings do not agree, match
them by pressing the Up and Down Arrow keys.
7. Press Enter to return to the normal temperature display.
4.4 Changing the Access Code
1. Obtain access code prompt by depressing the up arrow
key and the BATTERY %CHARGE key simultaneously.
A “1” will appear in the display window.
Note: The keys must be pressed firmly and at the same time. If
a “1” does not appear in the window, repeat step 1.
2. Enter the current four digit access code.
3. Press ENTER. “CAL” will appear in the display.
4. Depress the (4) key and a “1” will appear in the display
prompting the new access code entry.
5. Key in the new four digit code using any combination of
the numbers 1, 2, 3 and 4. the monitor will accept the
last four digits if more than four are entered. if less than
four digits are entered, the display returns to temperature
and does not change the access code.
6. 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 com-
bination is misplaced or forgotten, contact the Thermo Forma
Service Department, 1-888-213-1790.
Section 5 - Routine Maintenance
5.1 Cleaning the Cabinet Exterior
Clean the freezer exterior with soap and water and a gener-
al use laboratory disinfectant. Rinse with water.
5.2 Cleaning the Condenser
De-energize all potential sources of energy to
unit. Lockout/tagout de-energized controls per
O.S.H.A. Regulation, Section 1910-147 before
cleaning the refrigeration system.
The Condenser Hot light illuminates when the temperature
in the refrigeration compartment reaches 40°C, which typically
indicates a clogged air filter, a clogged condenser, or a fan fail-
ure. This compartment temperature increase may also be the
result of operating the freezer in high ambient temperatures.
The efficiency of the refrigeration unit is directly related to
the temperature of the air entering the air-cooled condenser.
Dust in the condenser fins slows the rate of heat dissipation and
increases compressor operating temperature (also decreasing
compressor life). A dirty condenser will reduce the overall per-
formance of the refrigeration system in terms of recovery time
and set point control accuracy and may ultimately cause com-
pressor failure.
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.
Thermo Forma recommends a minimum of twice a year.
To clean the condenser, remove the front grille by grasping
the assembly at the corners and gently pulling it away from the
frame. Clean the compressor housings and condenser fins with
a vacuum cleaner or air-hose. Other refrigeration system parts
are cleaned by removing the back and side panels. (Refer to
Figure 5-1.)
Note: Before replacing the grille, inspect the filter for cleanli-
ness. Clean or replace it if necessary. (Refer to Section 5.3.)
Compressors and fan motors are permanently lubricated
and do not require servicing.
After cleaning, remove the lockout/tagout devices and
return the unit to service.
Model 8515 Series ______________________________________________________________________Routine Maintenance
5 - 1

5.3 Cleaning the Air Filter (Refer to Figure 5-1)
A foam air filter is located at the front of the freezer base.
When the filter appears dirty, it can be easily removed for
cleaning. The filter and grille assembly are held in place by
snap fasteners on each corner of the grille.
Remove the grille by grasping it at the corners and gently
pulling it away from the frame. 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 Thermo Forma (Part #
760162).
5.4 Defrosting the Chamber
The type of frost formed in the chamber is generally very
soft and may be easily removed with a soft cloth. Do not use
any type of abrasive brushes.
A complete defrosting may occasionally be required. To
completely defrost the chamber:
1. Remove all product and place it in another freezer.
2. Turn the unit off and pull the plug.
3. Open all of the doors and place towels on the chamber
floor.
4. Allow the frost to melt and become loose.
5. Remove the frost with a soft cloth.
6. After defrosting is complete, clean the interior with a
non-chloride detergent and wipe the chamber dry with a
clean cloth.
Caution! Do not use strong alkaline or caustic
agents. Stainless steel is corrosion resistant, not
corrosion proof. Do not use solutions of sodium
hypochlorite (bleach), as they may also cause pit-
ting and rusting.
5.5 Cleaning the Door Gasket
Routinely (monthly) check the door gasket for any perfo-
rations that will cause air leaks. Frost will form around all leak-
age areas. Frost accumulation on the door gasket may be
removed with a soft cloth.
5.6 Cleaning the Vacuum Relief Port (Refer to Figures
5-1 and 5-2)
The vacuum relief port on the Model 8515 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.
The vacuum relief port contains a small heating
element to reduce frost build-up. If the freezer is
not disconnected from the electrical supply or
turned off at the power switch, the heating ele-
ment will continue to operate and may cause
injury to personnel cleaning the freezer chamber.
Figure 5-1
Vacuum Relief Port, Temperature Probe and
Air Filter Location
Figure 5-2
Vacuum Relief and Probe Cover Assemblies
Model 8515 Series _____________________________________________________________________Routine Maintenance
5 - 2
Shelf
Bracket
Vacuum
Relief
Assembly
Phillips head
screws Chamber
Probe
Cover

5.7 Replacing the Performance Monitor/Alarm Battery
Replacement batteries must be rechargeable and
are available from Thermo Forma. Refer to the
parts list for stock number and description of the
replacement batteries.
Dispose of the used batteries in a safe manner
and in accord with good environmental practices.
1. Turn off electrical power to the freezer.
2. Remove the four screws and lock washers securing the
front panel.
3. Unplug the battery connection and remove the screws
securing the battery to the base.
4. Align the replacement battery pack with the red and
black wires in the harness.
5. Plug in the battery (red to positive and black to nega-
tive) and replace the front panel.
Section 6 - Service
6.1 Servicing the Refrigeration System
Caution! Servicing must be performed by quali-
fied service personnel only.
In the event of a unit malfunction, check all electrical com-
ponents including starting relays, thermal protectors, and start-
ing capacitors for the compressors.
Electrical schematics and drawings with parts for the
refrigeration system are included in this manual.
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 REFRIGER-
ATION SYSTEM SERVICE GUIDE” is available from Thermo
Forma. Call or write for details.
6.2 Troubleshooting Guide
The chart on the following page is intended as a guide to
troubleshooting the system. Servicing of the freezer must only
be performed by qualified service personnel.
6.3 8515/8520 Series Cabinet Hardware
(Refer to the detail drawings in Section 10)
a. Door Latch Assembly Detail
b. Door Hinge Assembly Detail
c. Vacuum Valve Heater Assembly Detail
Model 8515 Series _________________________________________________________________________________Service
6 - 1

Symptom Possible Cause
No power light on monitor. Power cord disconnected.
Circuit breaker tripped/open.
Main power switch OFF.
Pin-connector not plugged
into the monitor board.
Fuse open on temp control
board
Main fuse(s) open.
Chamber temp deviates
from setpoint Too much warm product added
Door open too long
Insufficient voltage
Inadequate air circulation
Calibration
Dirty condenser
High Ambient Temperatures
Too much frost build-up Leaking or damaged door gasket
Freezer not being refrigerated
(unit is receiving power) Compressor thermal overload
open
Loss of refrigerant in either
system
Defective compressor(s)
Defective temp control
Defective high pressure cut-off
Low stage compressor locked up
Main fuse(s) open
Display problems in general Defective monitor board
Cannot open door after recent door opening
Vacuum relief port is clogged
with ice.
Vacuum relief heater is not
functioning
See Section 5.6 - Cleaning the
Vacuum Relief Port
Section 7 - Specifications
17 cu. ft. Upright Freezers
Specification Model 8515/ 8580
Temperature -86°C (-123°F)
Exterior Dimensions 33.25” W x 77.75” H x 31” F-B
(85cm x 197.5cm x 79cm)
Add 3” (7.6 cm) to width for handle/hinge
Add 4.4” (11.2 cm) to F-B for control panel/wall spacer
Interior Dimensions 23.0” W x 51.5” H x 19.25” F-B
(58 cm x 131 cm x 49 cm)
Capacity 17.3 cu. ft. (490 liters)
Refrigeration Type Two 1 HP Compressors
(Cascade System)
Insulation Type: Non-CFC foamed-in-
place urethane
Sides: 5” (12.7 cm)
Electrical 208/230VAC, 1PH, 50/60Hz,
15.0 FLA
Operating Range: 208VAC to 240VAC
Breaker 15 Amp, 220VAC
Requirements 20 Amp Time Delay Breaker
(Dedicated Circuit)
Shipping Weight Ocean: 940 lbs. (426 kg)
(nominal) Air/Container: 920 lbs. (417 kg)
Motor: 840 lbs. (381 kg)
Continuing research and improvements may result in specifica-
tion changes at any time.
Model 8515 Series _________________________________________________________________________Specifications
7 - 1