Cox User Manual

Rapid Heat Sterilizers with
6, 8, and 12 Minute Sterilization Cycle Times
USER MANUAL
MODELS:
COX – 115V
COX – 220V
2364 Leicester Road, P.O. Box 175, Leicester, NY 14481
Phone (585) 382-3223 ● Fax (585) 382-9481 ● www.coxrapidheat.com
July 20, 2015
TABLE OF CONTENTS
RECOMMENDATIONS – IMPORTANT SAFEGUARDS
3
ACCESSORIES
4
OPTIONAL ACCESSORIES
4
MATERIALS INTEGRITY
4
CAUTIONS
4
SAFETY NOTES ON TEMPERATURE
5
OPERATING INSTRUCTIONS
5-7
DEFAULT SETTINGS
7
MAINTENANCE - SERVICE
8
ERROR CODES
8
USB PORT
9
BIOLOGICAL TESTING
9
UNIT ELECTRICAL RATINGS
10
ENVIRONMENTAL CONDITIONS
10
SPARE PARTS LIST
11
WARRANTY
12
2
RECOMMENDATIONS
Read the entire instruction manual before installation or operation of the COX Rapid Heat Transfer
Sterilizer. It will help you to understand the operation of the system, how various sub assemblies
work together and the operating sequence of the controls.
WARNING: NEVER ATTEMPT TO PERFORM ANY ELECTRICAL TROUBLESHOOTING
ADJUSTMENT(S) OR SERVICE(S) UNLESS YOU ARE A QUALIFIED ELECTRICIAN,
ELECTRONICS TECHNICIAN OR FACTORY TRAINED SERVICE TECHNICIAN
IMPORTANT SAFEGUARDS
When using your COX Rapid Heat Transfer Sterilizer, these basic safety precautions should be
followed:
1. Read and understand all instructions.
2. Care must be taken to avoid burns from touching hot parts.
3. Do not operate this appliance with a damaged cord or if appliance has been dropped or
damaged until it has been examined by a qualified service technician.
4. Do not let power cord hang over edge of table or counter or touch hot surfaces.
5. An extension cord should not be used with this unit. The unit should be plugged directly into a
power outlet. Only use a properly grounded fuse/breaker protected outlet (110V, 60 cycles, or
a 220/240V, 50 cycles). A separate circuit is recommended.
6. To protect against electrical shock hazard, do not immerse this appliance in water or other
liquids.
7. To avoid electrical shock hazard, do not disassemble this appliance. Call a qualified service
technician when service or repair work is required. Incorrect reassembly can cause electric
shock hazard.
8. Do not lift unit by handle or door opening in front of unit. Hold securely by the bottom when
lifting or moving unit.
SAVE THESE INSTRUCTIONS
3
COX STERILIZERS
The Cox Rapid Heat Transfer Sterilizer was invented by Keith Cox. The technology used in the Cox
sterilizer represents significant advancement in dry heat sterilization. We are confident you will find it
a valuable and cost saving addition to your practice. The Cox sterilizer* is intended for indoor use in
hospitals and dental, orthodontic and health care facilities.
ACCESSORIES
The Cox sterilizer comes equipped with a removable instrument basket, an instrument rack for
packaged instruments, a tool for changing baskets, and a cooling rack upon which to place the hot
basket. Depending on the size of your practice, you may wish to purchase additional baskets.
OPTIONAL ACCESSORIES
Part No. CX0031: MESH BASKET (BURR HOLDER)
An optional mesh basket is available for sterilizing small/lightweight items.
Call CPAC at (585) 382-3223 to place an order.
MATERIALS INTEGRITY
Tests have been conducted on various surgical and dental instruments as to compatibility with the
375 °F (190 °C) temperatures. Generally, medical and dental stainless and carbon steel hand
instruments are safe in the Cox sterilizer. Caution should be used with plastic and rubber goods.
When in doubt, consult the instrument manufacturer.
CAUTIONS

During operation, the exterior surface of the sterilizer remains comfortable to the touch;
however the interior of the drawer and the sterilized instruments will be hot. Use only the
handle to carry the drawer. Caution should be taken when handling hot instruments.

The sterilizer is designed for use with metal instruments. While many new plastics, Teflon and
rubber products can be used in a high temperature environment, extreme care should be used
in sterilizing these materials until compatibility has been confirmed.

When sterilizing packaged instruments, use only dry heat packaging material suitable for
375 °F (190 °C) temperatures.

Instruments that have been wiped with alcohol, or any combustible solution, must be allowed
to dry before being placed in the sterilizer.

Use only dry heat wraps and pouches suitable for 375 °F (190 °C) temperatures.
*The Cox Sterilizer is non-patient care equipment.
4
SAFETY NOTES CONCERNING TEMPERATURE
The temperature in the Cox sterilizer is controlled by computer logic, which precisely maintains
temperature throughout the sterilizer chamber. The temperature control is extremely sensitive and
maintains 375 °F (190 °C).
After room temperature instruments are placed in the sterilizer, the temperature may drop a few
degrees depending on the size of the load. If the temperature drops below 372 °F (189 °C), the cycle
will not begin until 375 °F (190 °C) has been reestablished.
The sterilizer is designed to maintain 375 °F (190 °C) at all times. The door must be closed during
operation, otherwise the heating element will continually operate to compensate for the lower
temperature caused by room temperature air entering the sterilizer.
Do not open the door during a sterilization cycle. In the event that the door is opened, the cycle
timer will reset and the sterilization cycle will restart after reaching operating temperature.
OPERATING INSTRUCTIONS
TO START THE DAY
Before turning the sterilizer on, open the door and visually inspect the heating chamber. Close the
door, make sure the handle is in the fully closed (horizontal) position, push and release the ON
STANDBY/OFF button for 1-2 seconds, and allow the sterilizer to heat to 375 °F (190 °C). This will
take about 12 minutes. The ON STANDBY/OFF LED will change color from amber to green when
the warm-up to 375 °F (190 °C) is complete.
The temperature read out will begin at 70 °F (21 °C).
The sterilizer is very energy efficient and should be left on all day, as its electrical consumption is
minimal.
Before beginning a sterilization cycle, be sure instruments are clean and free of debris (for
information about which instruments can be safely sterilized see Materials Integrity – page 4).
TO STERILIZE
Instruments which are to be sterilized in Cycles I and II need not to be dried prior to placing them in
the sterilizer. However, instruments which are packaged for Cycle III must be dried before packaging.
All instruments, including those that have been placed in a holding, ultrasonic, or cold chemical
disinfectant solution, must be thoroughly rinsed before sterilization.
Failure to thoroughly remove extraneous agents prior to sterilization could lead to surface staining of
instruments.
CYCLE I – 6 MINUTES
Unwrapped Instruments Sterilization Instructions
To sterilize unwrapped instruments, place them in a basket, place the basket in the basket tray and
slide the basket into the heating chamber using the basket removal tool. Close the door, make sure
the handle is in the fully closed (horizontal) position, push and release the Cycle I button.
5
NOTE: It’s recommended that only a single layer of instruments be placed in the basket to ensure
thorough and complete sterilization.
Be sure to place burs, diamonds and other small items in the accessory mesh basket. At the end of 6
minutes, a beep will sound and a “6 C” will appear in the time window on the face of the sterilizer
indicating the cycle has been completed.
Immediately after opening the door, use the basket removal tool to slide the basket out of the
chamber, remove the basket from the tray and place it on the cooling rack. The basket containing the
sterilized instruments may continue to cool on the cooling rack.
CYCLE II – 8 MINUTES
Hand Piece Sterilization Instructions
To sterilize air rotor hand pieces or medical drills with internal tubing, the following protocol should be
used:

Clean the hand piece (flush water lines by running the hand piece for 30 seconds); thoroughly
scrub with detergent and water to remove adherent material. Remove old lubricant and debris
from turbine head by spraying a hand piece cleaner/solvent into the air drive.
DO NOT USE A CLEANER/LUBRICANT.

Place thoroughly clean hand pieces in a basket.
To sterilize hand pieces, select Cycle II. When the beep sounds and an “8 C” appears in the time
window at the end of the 8 minutes, promptly remove and cool the instruments and insert another
loaded basket into the sterilizer. Remember to lubricate the hand piece prior to use.
CYCLE III – 12 MINUTES
Wrapped Instruments Sterilization Instructions
To sterilize packaged instruments, dry instruments before packing and place up to 8 packages in the
accessory instrument rack.
NOTE: It’s recommended that the instrument rack be used when sterilizing packaged instruments to
ensure thorough and complete sterilization.
Place the rack in a basket, insert the basket in the sterilizer, push and release the Cycle III button. At
the end of 12 minutes, a beep will sound and a “12 C” will appear in the window indicating the cycle is
complete. Remove and cool the instruments. As a reminder, be sure to use dry heat compatible
bagging material suitable for 375 °F (190 °C) temperatures. For your convenience, nylon pouches
are available from CPAC.
Part No. 400636, NYLON SELF SEAL POUCHES 2" X 10"
Part No. 400651, NYLON SELF SEAL POUCHES 3” X 10”
Part No. 400637, NYLON SELF SEAL POUCHES 4" X 10"
Part No. 400638, NYLON SELF SEAL POUCHES 7" X 10.5"
Part No. 400639, NYLON SELF SEAL POUCHES 9.5" X 13"
Call CPAC at (585) 382-3223 to place an order.
6
TO END THE DAY
Push and release the ON STANDBY/OFF button. The sterilizer will go into standby mode while the
cooling fan operates for 10 minutes.
At the end of ten minutes, the sterilizer will automatically shut off. If the sterilizer is connected to a
wall outlet controlled on/off switch, do not turn the switch off, or in any way disrupt the power supply
while sterilizer is in cool down mode.
DEFAULT SETTINGS
The following system settings can be changed from their default or viewed only when the power is
OFF (Standby). Press and hold for 5 seconds the CYCLE I key to enter SET mode. The 4-digit LED
display will show the first setting to be changed. Continue to press the CYCLE I key to toggle through
all the settings which are listed below. Use the CYCLE II key to increase values and the CYCLE III
key to decrease the values of the settings. Press the CYCLE I key after the last setting is displayed
to exit SET mode and save changes to memory.
STAND-BY MODE: Default - 2 hours
Unit will maintain cycle temperature for 2 hours after last cycle. Unit will automatically enter power
OFF (Standby) if there is no cycle activity for 2 hours. This time can be adjusted from 2 – 4 hours.
Display format example = “Sb-2”.
AUDIBLE ALARM: Default – 1(ON)
The unit has an audible alarm that alerts the user when the sterilization temperature has been
reached during warm-up and when a cycle has been completed. The alarm can be defeated by
changing the value to 0(OFF). Display format example = “AA-1”.
FAHRENHEIT/CELSIUS: Default – F (Fahrenheit)
The temperature measurement can be displayed in units of Fahrenheit (F) or
Celsius (C). Display format example = “ F”.
PRINTER OUTPUT COPIES: Default – 1
The number of copies for the printer output can be increased to 2 or 3. Display
format example = “PC-1”.
MONTH: Default – 1.
The month can be updated to current month as follows: 1-January, 2-February,
3-March, 4-April, 5- May, 6-June, 7-July, 8-August, 9-September, 10-October,
11-November or 12-December. Display format example = “ 10”.
DAY of MONTH: Default – 1.
The day of month can be updated to current day. Display format example = “d-20”.
YEAR: Default – 2011.
The year can be updated to current year. Display format example = “2011”.
MODEL: Sterilizer model can only be viewed not changed. Display format example = “6000”.
SERIAL NUMBER – Serial number can only be viewed not changed. Display format example =
“1 2345”.
7
MAINTENANCE – SERVICE
The Cox sterilizer is designed for minimum and easy service. It is constructed of high quality
stainless steel, which may be cleaned with mild soap and a damp cloth or any non-abrasive stainless
steel cleaner. Unit can be externally disinfected with the disinfectant of your choice.
A cooling fan filter is located on the back of the unit to ensure the sterilizer performs reliably and
efficiently for many years. Visually inspect the filter for build up of dust or contaminants at least once
a month. Replace the filter if an excessive amount of dust is evident. Replacement foam filters can
be purchased from CPAC.
NOTE: A ‘CFF’ (Change Fan Filter) indicator will be displayed when the unit is shut off if a clogged
filter has not been replaced and the performance of the cooling fan is being affected. If the filter is not
replaced, an E-14 error code may occur and the sterilizer will require servicing.
All internal components used in the sterilizer’s construction are long life, heavy-duty parts that require
no maintenance. Below is a list of potential error codes or performance symptoms that would indicate
the possible need for service. If anything needs to be replaced, an authorized service representative
should be called or call CPAC at (585) 382-3223.
ERROR CODES
Any failure in performance will be signaled by an error code.
If one of the following error codes appears, press the power ON/OFF key for 1 second. This will
reestablish the error detect logic and will eliminate false error codes that may occur.
If the error code persists, call your authorized service representative or CPAC at (585) 382-3223.
Process Failures:
E-12
Key Switch failure
E-14
Board over heat
E-16
Cycle Interruption
E-18
PCB failure
Temperature Probe:
E-20
Open probe
E-21
Thermocouple
Heater Drive:
E-30
Over heat
E-31
Under heat
8
(#) - Error Code / Symptom
Possible Causes
Repair / Solution
(1) - Failing spore tests
Instruments stacked on top of
each other.
Place instruments on one level
or in divider rack.
Not running 12 minute cycle
when instruments are in a
cassette or pouch.
Temperature rising above
380°F.
Run 12 minute cycle.
Temperature rising above
380°F after cleaning fan
filter/grill.
Replace thermocouple,
(CX0088).
Not using pouches designed
for Cox sterilizer.
Use SteriSure nylon pouches.
Pouches left in sterilizer for
more than 30 minutes after
cycle.
Blower is not blowing air into
chamber through slots.
Remove pouched instruments
promptly after sterilization cycle
has completed.
Replace blower (CX0001).
Heater is not warming
chamber.
Replace heating element
(CX0082 - 115VAC unit)
(CX0027 - 230VAC unit).
Clean fan filter/grill.
(2) - Burning pouches
(3) - E-31 error code / Sterilizer
not heating up to 375°F.
(4) - E-14 error code / Ambient
air temperature near PCB too
high.
Cooling fan filter/grill is clogged
with dust.
Cooling fan is not running.
(5) - E-12 error code / Key(s)
on membrane keypad not
working.
Keypad failure.
9
Clean cooling fan filter/grill.
Replace cooling fan
(CX0037 - 115VAC unit)
(CX0093 – 230VAC unit)
Replace membrane keypad
(CX0022).
(#) - Error Code / Symptom
(6) - E-20 or E-21 error code /
Control of temperature erratic.
(7) - E-30 error code /
Chamber temperature
exceeding maximum value.
(8) - Timer not counting down
during cycle.
Possible Causes
Bad thermocouple reading
sequence.
Repair / Solution
Unplug unit for 20 seconds and
then plug back in, turn power
ON. If error code appears
again, thermocouple is faulty.
Faulty thermocouple.
Replace thermocouple
(CX0088).
Clean fan filter/grill.
Cooling fan filter/grill is clogged
with dust.
Cooling fan is not running.
Replace cooling fan
(CX0037 - 115VAC unit)
(CX0093 – 230VAC unit).
Faulty PCB.
Unplug unit for 20 seconds and
then plug back in, turn power
ON. If error code appears
again, replace PCB (CX0079).
Allow temperature to reach
sterilization setting.
Temperature has not reached
375°F.
Faulty door switch.
10
Install door switch jumper wire
on PCB until door switch can be
replaced.
USB PORT
The COX Rapid Heat Transfer Sterilizer is capable of storing sterilization cycle data on a USB flash
drive. The flash drive should be inserted in the provided USB port located on the right side of the
sterilizer. The sterilizer will record cycle parameters, including start date and time, cycle phase time
and temperatures, and the cycle status. The cycle status at the end of the record will indicate
whether the sterilization cycle successfully completed or if there was an error. A new text file is
automatically created each day and named using the following format: month-day-year.txt (ex: 05-2011.txt).
The flash drive can be any type formatted for FAT (FAT16) or FAT32.
NOTE: The flash drive must be installed before the cycle ends or the cycle data will not be stored.
The drive can be removed anytime after a cycle ends and the data can be downloaded to your
computer for archiving or printing.
If direct printing is desired, the following printer can be connected to the USB port:
Printer - Epson TM-U220 with USB interface
Cable – USB printer cable
NOTE: The printer must be connected to the COX USB port via the above cable and must be turned
on for the printer output to work. The number of copies can be changed in order to printout multiple
copies (see DEFAULT SETTINGS). Cycle data will not be stored electronically when the printer is
used.
The date and time should be set before the Cox sterilizer is first used and will need to be updated if
the power is lost to the sterilizer. Follow the instructions on page 7, DEFAULT SETTINGS, to adjust
these settings.
BIOLOGICAL TESTING
The American Dental Association, United States Air Force, Joint Commission of Accreditation of
Hospitals, and the Centers for Disease Control recommend biological indicator tests to verify the
sterilizer’s performance.
For monitoring dry heat, biological indicators containing Bacillus atrophaeus should be used. Spore
strips, as well as test services are widely available through universities and commercial services.
The following spore strip is recommended:
1. Weight the spore strip envelope with a jumbo paper clip.
NOTE: Be careful not to puncture the envelope.
2. Place the weighted strip in the basket.
3. With the sterilizer operating at 375 °F (190 °C), place basket containing the spore strip in the
sterilizer.
4. Start the test cycle by starting Cycle I, II or III.
5. When the beep sounds, remove the spore strip for culturing.
11
UNIT ELECTRICAL RATINGS
MODELS COX–115V
120 VAC, 60Hz, 12 Amps
MODELS COX-220V
220 VAC, 50Hz, 8 Amps
ENVIRONMENTAL CONDITIONS
The COX Rapid Heat Transfer Sterilizer is designed for indoor use with the following conditions:

Temperature Range of 5°C to 40° C (41°F to 104°F)

Maximum Relative Humidity of 80% up to 31°C (88°F). Decreasing linearly to 50% at 40°C
(104°F).

Pollution Degree 2 applies in accordance with IEC 664.

Transient Over-voltage Category II applies.

Supply Voltage not to fluctuate more than 10% (+/- 12V at 120V, +/- 22V at 220V)

Maximum altitude of 2000 m (6562 ft).
12
COX STERILIZER SPARE PARTS LIST
March 20, 2013
Product Number
CX0001
CX0015
CX0018
CX0022
CX0024
CX0025
CX0031
CX0036
CX0037
CX0046
CX0048
CX0051
CX0052
CX0079
CX0081
CX0082
CX0085
CX0088
CX0097
CX0190
CX0268
CX0273
CX0294
CX0315
CX0322
Description
Blower Assembly w/o heater
Wire Harness
Wire Harness (black and white )
Keypad
Fuse Holder
Fuse 15 Amp 250V (slow blow)
Burr Holder
Drawer Handle
Muffin Fan 115V 106 CFM FAN
Instrument Basket
Silicone Mat (6 7/8" x 7 1/2")
Rubber Foot
Cooling Rack External
Circuit Board Assembly
Instrument Rack (Internal)
Heater Assembly Complete
Blower Assembly w/Heater
Thermocouple
Ophthalmology Kit (basket and 2 silicone mats)
COX Shipping Box
Door Gasket (for new COX design)
Basket Removal Tool (new style)
Instrument Basket Cooling Rack
Cooling Rack, 2 Instrument Baskets, Stacked
Foam Filter, 4 1/2" Square (5/pack)
13
STATEMENT OF WARRANTY
All equipment is manufactured to exacting standards and has been tested and inspected for proper
workmanship and performance before shipping.
Any parts which are defective will be repaired or replaced within a one-year period after date of
shipment, provided the equipment has been used according to the instruction manual and have not
been abused or tampered with.
The company will not be responsible for any damage resulting from improper installation, operator
carelessness or improper operation of the equipment. The company assumes no responsibility for
damage in transit and the customer should present any claim for such damages to the carrier.
This warranty gives you specific legal rights. You may also have additional rights that vary from state
to state.
Any unit to be repaired under warranty must be shipped, freight prepaid, or delivered to a facility
authorized to render services provided hereunder. Returned unit must be either in its original
package or a similar package affording an equal degree of protection. All units must have a Return
Material Authorization code (RMA) visible on the returned item. RMA’s can be obtained by calling
CPAC at (585) 382-3223.
EVERY EFFORT HAS BEEN MADE TO ENSURE THE COMPLETE ACCURACY OF THE
CONTENTS OF THIS MANUAL. NO LIABILITY ARISING FROM ITS USE, HOWEVER, CAN BE
ACCEPTED BY THE COMPANY, WHO RESERVES THE RIGHT, WITHOUT PRIOR NOTICE, TO
ALTER THE SPECIFICATIONS, CONSTRUCTION, OR CONTENT OF ITS EQUIPMENT AT THE
COMPANY’S OWN DISCRETION.
14
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