Excellus Power Supply

Excellus Power Supply
Excellus
Power Supply
Setup and Testing
Chapter 1. Set- up and Testing
VACUUM
START/STOP
SWITCH
SYSTEM
RESET/TEST
VACUUM LEVEL
ADJUSTMENT
LCD DISPLAY
Front View
VACUUM
PORT
VACUUM FOOTSWITCH
CONNECTOR
SYSTEM STATUS
LIGHTS
MOTOR
POWER
RECEPTACLE
MOTOR
FOOTSWITCH
RECEPTACLE
EQUIPOTENTIAL
GROUND CONNECTION
REF: 101003006
S/N:
POWER ON/OFF
ROCKER SWITCH
POWER
RECEPTACLE
Rear View
FOR FACTORY/
SERVICE USE
ONLY
Figure 1. Hansatome® EXCELLUS controls (Model 101003006 version shown).
1. Hansatome
Excellus
microkeratome
Chapter 1. Set- up and Testing
VACUUM
START/STOP
SWITCH
SYSTEM
RESET/TEST
VACUUM LEVEL
ADJUSTMENT
LCD DISPLAY
Front View
VACUUM
PORT
VACUUM FOOTSWITCH
CONNECTOR
SYSTEM STATUS
LIGHTS
EQUIPOTENTIAL
GROUND CONNECTION
MOTOR
POWER
RECEPTACLE
MOTOR
FOOTSWITCH
RECEPTACLE
REF: 101003007
S/N:
Rear View
POWER ON/OFF
ROCKER SWITCH
FOR FACTORY/
SERVICE USE
ONLY
POWER
RECEPTACLE
Figure 2. Hansatome® EXCELLUS controls (Model 101003007 version shown).
Operator’s Manual
2
Chapter 1. Set- up and Testing
Preparing the Hansatome Microkeratome
All components must be cleaned and disinfected or sterilized in accordance with chapter
3 of this manual before each use.
1. Place the Hansatome Excellus Power/Suction Supply unit on a firm, level surface. Ensure that the main power switch on the rear panel receptacle is in the “OFF”
position.
2. On the rear panel, you will see the receptacle for the main power cord. Insert the
female end of the main power cord firmly into the receptacle. Then plug the male
end of the cord into a properly grounded outlet of the appropriate voltage. (See figure
4).
3. Attach the single pedal vacuum footswitch by latching its cable connector into the
appropriate port on the lower left side of the front panel. (See figure 3).
4. Attach the dual motor footswitch by latching its cable connector into the appropriate
port on the lower right side of the front panel. (See figure 3).
5. Attach the motor cord by latching its cable connector into the appropriate port on
the lower right side of the front panel. (See figure 3).
Refer to steps indicated by number.
13
3
5
2
Forward
4
Reverse
Figure 3. Hansatome
3. Hansatome
Excellus
microkeratome connections.
microkeratome
1
Chapter 1. Set- up and Testing
7
READY
6. Turn on the main power switch on the rear panel receptacle and allow the
Hansatome Excellus Power/Suction Supply unit to run its internal diagnostics
check. The yellow LED is illuminated while the vacuum tank is being evacuated.
The green LED comes on when the READY mode is established.
7. System Self--Test: When the Hansatome Excellus Power/Suction Supply unit
is in the READY mode, perform the Self--Test. Press and release the RESET/TEST
switch and follow the LCD display prompts as follows:
Connect Open Patient Vacuum Hose,
Press and release TEST switch,
Disconnect Open Patient Vacuum Hose,
Press and release TEST switch.
9
OPERATING
Upon successful completion of the Self--Test the LCD will display DIAGNOSTICS
PASS and the Hansatome Excellus Power/Suction Supply unit will return to the
READY mode. If the Self--Test does not pass, contact Bausch & Lomb
Refractive Customer Service (see Owner's Manual ) to schedule an inspection
and/or .service
8. Leak--Test: When the Hansatome Excellus Power/Suction Supply unit is in the
READY mode perform the Leak--Test as follows:
10
VACUUM
OPERATING
Press and hold the VACUUM START/STOP Switch and read the PRE--OP
TEST Patient Vacuum reading on the LCD and then release the VACUUM
START/STOP Switch.
The OPERATING Patient Vacuum reading on the LCD should return to the
previously displayed reading within approximately five (5) seconds.
Press and release the VACUUM START/STOP Switch to return to the READY
mode.
If the Patient Vacuum readings do not correspond, this is an indication of a
system vacuum leak. Contact Bausch & Lomb Refractive Customer Service
(see Owner's Manual ) to schedule an inspection and/or service.
9. Enter OPERATING mode by pressing and releasing the VACUUM START/STOP
Switch on the front panel or the vacuum footswitch. Set the VACUUM LEVEL ADJUSTMENT Knob to provide a patient vacuum level as set forth in step 10, “Setting
the Vacuum Regulator” below. The reading may fluctuate during the adjustment period. In order to get the most accurate setting, allow several seconds delay for the
regulator to settle as the knob is rotated.
10. Setting the Vacuum Regulator:
The Hansatome microkeratome is generally shipped with the patient relative
vacuum set at about 26.0 in. Hg (88.1 kPa). This is the most commonly used setting
at sea level, where, in round figures, atmospheric pressure is 30.0 in. Hg (101.7 kPa).
For elevations exceeding 5,000 feet (1.5 Km), please consult Bausch & Lomb
Refractive Customer Service ( see Owner's Manual ) for proper relative patient
vacuum settings.
READY
Operator’s Manual
4
Chapter 1. Set- up and Testing
In general, the Hansatome microkeratome will not operate if the patient relative
vacuum is set below 20.0 in. Hg (67.8 kPa). The operator should initially set the
patient vacuum at 4.0 in. Hg (13.6 kPa) below the atmospheric pressure indicated
in the LCD display. At sea level this would be 26.0 in. Hg (88.1 kPa). The vacuum
level can be increased by as much as about 2.0 in. Hg (6.8 kPa) (about one (1) full
clockwise turn of the regulator knob) from this starting point, but at the expense of
increased time lag for vacuum stabilization at entry to OPERATING mode. To
increase patient vacuum, remove the suction tube/trap from the front panel. Press
down on the vacuum front panel switch or footswitch. The current relative patient
vacuum setting is displayed. Rotate the VACUUM LEVEL ADJUSTMENT Knob
clockwise until the desired relative patient vacuum is achieved.
11. Downward Adjustment of the Vacuum Regulator: To decrease the relative patient operating vacuum, turn off the vacuum pump, and remove the suction tubing
from the Hansatome Excellus Power/Suction Supply unit. Rotate the VACUUM
LEVEL ADJUSTMENT Knob counter--clockwise two (2) to three (3) revolutions.
Depress the VACUUM START/STOP Switch or vacuum footswitch to start the vacuum pump, and observe the new setting on the LCD screen. While the vacuum pump
is running, rotate the VACUUM LEVEL ADJUSTMENT Knob clockwise to increase the relative patient vacuum to the desired setting as set forth in step 10, “Setting the Vacuum Regulator” on page 4--5 and turn off the vacuum pump. Verify the
new setting by depressing the VACUUM START/STOP Switch or vacuum footswitch and observe the settings on the LCD screen.
NOTE: The relative patient vacuum setting may not be turned down while the
vacuum pump is running. If you need assistance, contact Bausch & Lomb
Refractive Customer Service (see page 5--1).
12. Especially at high altitudes, an excessive vacuum level setting will unnecessarily
delay the commencement of cutting while the system works to achieve the set value
of vacuum. If the vacuum level is set above a feasible setting for the operating altitude, the attempt to enter the OPERATING mode may fail in 30 seconds with a
Warning 32, preventing entry into OPERATING mode.
Always inspect electrical components and connections prior to use. If there is any
visible flaw in the motor cord or its cable or panel connectors or in the motor power
jack, do not use the Hansatome Excellus Power/Suction Supply unit.
Warning Any failure in the electrical components or connectors could lead to
a stoppage in the middle of a cut and could result in possible serious permanent
patient injury.
13. Attach the suction tubing by depressing the suction receptacle latch on the front
panel and firmly inserting the tubing connector until a positive latch is achieved.
(See figure 4).
NOTE: If the tubing connector is not fully latched, the vacuum panel connector
will remain occluded and no suction will be available through the tubing to the
patient.
5.
Hansatome
Excellus
microkeratome
11
Chapter 1. Set- up and Testing
14. To test the suction ring assembly and the integrity of the disposable suction tubing,
place the assembled suction ring over the black suction ball or fully occlude the ring
using a gloved thumb. Once the ring has been occluded, turn on the VACUUM
START/STOP Switch or vacuum footswitch and verify the pre--set patient vacuum
level is achieved.
15. While both hands are free, remove the protective cap from the Hansatome
microkeratome motor.
16
16. Remove the appropriate Hansatome microkeratome head from the instrument
tray. Using your thumb and forefinger, spin the rolling gear back and forth to confirm
smooth movement. If the gear will not spin absolutely free of resistance, reclean and
resterilize the head. See chapter 3.
17. Motor Test -- Without the head connected: Prior to attachment of the head, electrically run the motor forward and reverse. Please refer to table 4 found on page 4--1.
18. Inspect the head to ensure that it is perfectly clean and that there is no residual debris
that would inhibit the performance of the head. If residual debris is found, reclean
and resterilize the head. See chapter 3.
19. Insert the AccuGlide disposable Hansatome
provided below.
blade according to the instructions
Warning
Use of any other blade could damage the Bausch & Lomb
Hansatome microkeratome. Such damage could result in possible serious
permanent patient injury.
Warning Use caution not to bump or nick the blade edge. Use of such a blade
could seriously compromise the quality of the resection and could result in
possible serious permanent patient injury.
Blades to be used during surgery should be opened in the sterile field and removed
from the case using the blade insertion tool. The blade should be visually free of
particulate and the edge free of nicks. The blade should be carefully inserted into the
slot provided in the Hansatome microkeratome head. Hold the head on a flat plane,
so you are only maneuvering the blade insertion tool. Hold the insertion tool
between your thumb and forefinger. The blade should slide freely, but some
resistance will be encountered depending upon the particular Hansatome
microkeratome and the blade being inserted. This is normal. If you encounter a blade
that fits very tightly and would have to be forced into the head, do not use it. Do not
force a blade into the head!
Warning If the AccuGlide blade is damaged, do not use the blade. Use of such
a blade could result in possible serious permanent patient injury. Carefully
remove the blade from the Hansatome microkeratome, and place it back into
its case for return to Bausch & Lomb.
The following page provides detailed blade insertion instructions.
Operator’s Manual
6.
Chapter 1. Set- up and Testing
Step 19 continued:
2
AccuGlide Blade Insertion Instructions:
A. Place blade protective case (1) on flat surface as shown, permitting
access to the plastic blade holder via the right hand side of the case.
B. Insert blade insertion tool (2) into opening on right hand side of
case, engaging plastic blade holder inside.
C. Hold lower tab of case with right index finger, and open case with
left hand. Hold case open (flat).
1
3
D. With right index finger and thumb holding the blade insertion tool,
gently lift blade (3) out of case vertically. Do not rotate blade to
avoid damaging blade edge while removing from case.
Warning
Use caution not to bump or nick the blade edge. Use of such
a blade could seriously compromise the quality of the resection, and could
result in possible serious permanent patient injury.
Note: Left--handed individuals should simply reverse the following process.
4
5
E. Grasp Hansatome microkeratome head (4) between
thumb and forefinger of left hand, face plate side up,
and insert blade, edge side up, into blade slot (5) as
shown. The blade needs to be more perpendicular at
the onset of blade insertion and once blade is adjacent
to the gap, rotate clockwise.
F. Manually slide blade back and forth within blade slot
to ensure smooth, resistant--free movement.
G. Grasp the Hansatome microkeratome head, again
between thumb and forefinger of left hand, to steady
blade while disengaging blade insertion tool with a
gentle rolling motion using thumb and forefinger of
right hand.
Accuglide Blade Insertion Tips:
S Brace forearms against work surface when inserting the AccuGlide blade into the Hansatome
microkeratome head. This will provide stability and blade control.
S
Do not try to “needle--thread” the blade into the Hansatome microkeratome head blade cavity. Doing so
risks bending the leading edge of the blade. A blade corner that has been bent will scratch the inside of the
head, resulting in galling. Once galling occurs, all blades will fit tightly and factory service is required to polish out the raised areas. Contact Bausch & Lomb Refractive Customer Service (see page 5--1) to schedule
an inspection and/or service.
S
While the blade insertion tool is inserted into the blade block, manually slide the blade back and forth 1/8”
(0.3 mm) beyond each side of the Hansatome microkeratome to check for resistance. Do not force a blade
into the head.
S
When seating the left/right eye adapter onto the Hansatome microkeratome head, gently place the aperture
of the adapter over the motor port cavity of the head. Avoid seating the adapter by placing one finger on top
of the Hansatome microkeratome and another below, then squeezing together. Be aware that the cutting
edge of the blade is exposed on the underneath side of the Hansatome microkeratome.
7.
Hansatome
Excellus
microkeratome
Chapter 1. Set- up and Testing
20. Blade Test: The AccuGlide blade is specifically designed for use in the
Hansatome microkeratome and only Bausch & Lomb blades should be used for
both optimum performance and to avoid the risk of damage to the Hansatome
microkeratome. While the blade insertion tool is inserted into the blade block, manually slide the blade back and forth 1/8” (0.3 mm) beyond each side of the
Hansatome microkeratome to check for resistance. Confirm that the blade and
holder move smoothly back and forth within the blade slot.
Warning If the AccuGlide blade is damaged, do not use the blade. Use of such
a blade could result in possible serious permanent patient injury. Carefully
remove the blade from the Hansatome microkeratome, and place it back into
its case for return to Bausch & Lomb.
NOTE: In the event of any unresolved problem, preserve the blade and record
the lot number for return to Bausch & Lomb for analysis.
22
21. Removing The Blade Insertion Tool:
Gently roll the blade insertion tool out of the blade holder by holding the blade insertion tool close to the head and gently rolling the blade insertion tool between the
thumb and forefinger to retrieve the tool.
Warning Use caution when handling the loaded Hansatome microkeratome
to prevent damage to the exposed blade edge and to prevent injury to the operator
or handler. Certain damage to the blade edge could result in possible serious
permanent patient injury.
Warning Use of unauthorized products could damage the Bausch & Lomb
Hansatome microkeratome. Such damage could result in possible serious
permanent patient injury.
25
Warning The Hansatome microkeratome motor, suction rings, heads, and
suction handles are in fitted sets. Each component is identified with the set serial
number. Do not interchange parts between fitted sets. Interchanging parts could
cause malfunction during use which could result in serious permanent patient
injury.
22. Carefully place the left/right eye adapter over the motor port on top of the head to
correspond with the eye that is to be operated on. Assure the adapter is flush on the
head, not at an angle.
23. When preparing the Hansatome microkeratome for a right eye surgery, the eye
adapter will effectively cover the “L” for left that is stamped on the head, leaving
the “R” for right in full view and indicating that the Hansatome microkeratome is
configured for a right eye surgery.
24. When preparing the Hansatome microkeratome for a left eye surgery, the eye
adapter will effectively cover the “R” for right that is stamped on the head, leaving
the “L” for left in full view and indicating that the Hansatome microkeratome is
configured for a left eye surgery.
25. The oval blade holder drive slot should be visible in the center position of the motor
port of the head. Screw the motor clockwise into the motor port of the head until it
is firmly attached. Verify that the drive pin has dropped down into the drive slot of
the blade holder by momentarily running the motor and visually verifying that the
blade is oscillating.
Operator’s Manual
8.
Chapter 1. Set- up and Testing
Warning Failure to fully engage the blade drive pin into the non- oscillating
blade could lead to an adverse surgical outcome and possible serious permanent
patient injury.
Caution
Forcible tightening could cause damage which would require
factory service.
26. Warning When the READY mode is displayed, there is no vacuum, however,
the Hansatome microkeratome can be engaged for test purposes. Prior to performing the lamellar cut, visually verify the LCD display reads OPERATING
mode. Loss of vacuum during a procedure would result in Error 33 on the display
and forward pass of the Hansatome microkeratome head would be terminated
and could result in possible serious permanent patient injury.
Insert the power plug of the motor cord into the jack on top of the motor (see figure
4, on page 4--4). With the motor footswitch, run the motor in each direction for
about five (5) seconds. When testing the motor with the head connected with the
blade, the LCD readout should indicate an average motor current of less than 50 mA
and there should be no audible or visual warnings. Visually confirm that the blade
is oscillating. If the current exceeds 50 mA, the most likely cause is debris left in the
head from inadequate cleaning. Simple dry brushing of the slot often removes this
debris and reduces the current to the normal level. After dry brushing, repeat the
cleaning , disinfection, and sterilization processes of the head prior to proceeding,
as described in chapter 3.
After the Hansatome microkeratome is fully assembled, if the current reading is
greater than the values indicated in table 4, page 4--1, it is recommended that the
blade be moistened with one or two (1 or 2) drops of a sterile glycerin containing
ophthalmic solution. The solution should be placed directly into the blade slot to
lubricate the blade prior to electrically running the blade. Lubrication will generally
avoid galling.
27. Hansatome Excellus
Power/Suction Supply unit:
DANGER Do not operate the Hansatome microkeratome if the
Hansatome Excellus Power/Suction Supply unit is wet or exposed to fluid. If
the Hansatome Excellus Power/Suction Supply unit is exposed to or
immersed in fluid, there is a risk of electrical shock, exposing persons to possible
serious permanent injury or death.
DANGER Use of any ungrounded outlet creates a risk of electrical shock,
exposing persons to possible serious permanent injury or death.
At this point, electrically run the motor for a few seconds in forward and reverse.
Please refer to table 4 found on page 4--1 for review of motor current standards.
Warning If electrical power is lost, the unit will switch to emergency backup
power, however, a failure in the electrical components could lead to a stoppage in
the middle of a cut and could result in possible serious permanent patient injury.
9.
Hansatome
Excellus
microkeratome
26
50 mA
Chapter 1. Set- up and Testing
DANGER Keep the motor cord, power cord and the footswitch cords clear
of any exposed high voltage wires which could create a risk of electrical shock
exposing persons to possible serious permanent injury or death.
NOTE: The user should not redepress the motor forward footswitch when
already at the stop. If done repeatedly this will cause excessive wear on the gear
rack and worm gear which would require factory service. The user should
always confirm full completion of the forward cut by visual landmarks and
NEVER redepress the motor forward footswitch. Redepression of the motor
forward footswitch when already at the stop will generally cause a jam at the
stop.
28. Warning If the Hansatome microkeratome LCD readout indicates an average motor current value greater than the recommended condition for the corresponding configuration, the cause must be resolved and corrected prior to using
the Hansatome microkeratome in surgery. Failure to correct this condition
could result in possible serious permanent patient injury. If the recommended
condition is exceeded, perform the ‘At the End of the Day’ motor cleaning procedure described on page 3- 9 of chapter 3. If after doing this the condition still persists, contact Bausch & Lomb Refractive Customer Service (see Owner's
Manual) to schedule an inspection and/or service.
29
30
The cause of a high motor current is often an unclean head. To diagnose, unscrew
the motor from the head. Run the detached motor forward and reverse. The motor
current should not exceed 40 mA. If higher, this would indicate a possible fault in
the motor and/or gearbox, requiring service. If normal, the problem is likely in the
head or blade. Cleaning of the head and/or replacement of the blade may resolve the
problem. If the head is cleaned, then repeat the sterilization process as described in
chapter 3, Cleaning, Disinfection, and Sterilization. If the problem persists, do not
use the Hansatome microkeratome in surgery. Contact Bausch & Lomb Refractive
Customer Service (see Owner's Manual ) to schedule an inspection and/or service.
31
29. It is permissible to proceed only when the green LED is on and normal motor current
has been verified in a test run. While awaiting assembly of the other components,
store the assembled head avoiding any undue contamination or contact with the exposed cutting edge of the blade.
30. Take the suction ring and the suction handle from the instrument tray, screw the handle onto the suction port of the suction ring until it is snug, and place the suction tubing firmly over the end of the suction handle.
31. Place the assembled Hansatome microkeratome head and motor onto the suction
ring by guiding the left/right eye adapter over the pivot pin of the suction ring. This
will allow the head/adapter assembly to drop down all the way on the pivot pin.
Move the rolling gear up to the first gear tooth of the rack. Align the head over the
approximate starting position appropriate to the selected eye, left or right.
Perform a test pass on the suction ring prior to each procedure.
32. While lightly supporting the motor, press the forward footswitch (labeled “F”) of the
motor footswitch to start the head across the ring. In normal operation the head will
automatically stop, with two audible beeps, when the head reaches the mechanical
stop and the motor current will drop to zero. If the two beeps are not heard or the
motor current does not drop to zero at the end of the forward pass, contact Bausch
Operator’s Manual
10.
Chapter 1. Set- up and Testing
& Lomb Refractive Customer Service (see Manual ). If beeps are heard and the current drops to zero at the end of the forward pass, depress the reverse footswitch (labeled “R”) of the motor footswitch to reverse the head back off the ring.
33. If during the forward or reverse motion the yellow LED flashes and there is an audible beep, this indicates a problem which must be resolved prior to surgery. The problem could be debris in the head, an obstruction in the gear rack or a damaged spot
in the gear rack.
NOTE: The user should not redepress the motor forward footswitch when
already at the stop. If done repeatedly this will cause excessive wear on the gear
rack and worm gear which would require factory service. The user should
always confirm full completion of the forward cut by visual landmarks and
NEVER redepress the motor forward footswitch. Redepression of the motor
forward footswitch when already at the stop will generally cause a jam at the
stop.
34. Proceed only when: 1) the green LED is on, 2) there is no flash of the yellow LED,
and 3) there is no audible beep. If these conditions are not met, carefully remove the
head from the suction ring and store both components, avoiding undue contamination or contact with the exposed cutting edge of the blade.
Warning The forward and reverse travel of the Hansatome microkeratome
across the suction ring must be free of visual and audible warning indications. If
there is any such warning, the problem must be resolved prior to any surgical
procedure. If cleaning and/or a blade change does not resolve the problem, do not
proceed with surgery. Doing so could result in possible serious permanent patient
injury.
35. If the assembly and functional tests in this section have been successfully completed
and passed, the Bausch & Lomb Hansatome microkeratome is ready for use in a
surgical procedure.
Warning Do not use the Hansatome microkeratome if each of the assembly
and functional tests have not been successfully completed in sequence. Use of the
Hansatome microkeratome when each test was not successfully completed in
sequence could result in possible serious permanent patient injury. Contact
Bausch & Lomb Refractive Customer Service (see Owner's Manual) to
schedule an inspection and/or service.
36. Any balanced salt solution used prekeratectomy should be removed prior to the keratectomy. Irrigation and lubrication of the cornea prior to the cut may effectively be
done with anesthetic drops such as a glycerin containing ophthalmic solution to
moisten and irrigate the eye before the cut. Isotonic balanced salt solution may be
used in post keratectomy as usual.
37. Warning It is important to follow proper surgical procedure and carefully
drape the eyelids and lashes. Failure to do so could result in possible serious permanent patient injury.
Warning Adequate Intraocular Pressure (IOP) is critical to performing a
successful keratectomy. If the tonometer reading remains questionable (less than
65 mm Hg/8.7 kPa), do not proceed with the procedure. Doing so could result in
possible serious permanent patient injury.
11. Hansatome Excellus
microkeratome
34
Chapter 1. Set- up and Testing
Warning The suction handle to the suction ring must be held firmly during the
keratectomy to prevent counter rotation of the suction ring. Counter rotation of
the suction ring in the scleral ridge could result in possible serious permanent
patient injury.
38
OPERATING
READY
Warning Never go forward- reverse- forward. Forward- reverse- forward will
result in an uneven or irregular stromal bed. If the source of the jam presents with
too great of resistance (eg., the Hansatome microkeratome head travel is
impeded by drape), it will be necessary to turn off the vacuum and gently slide the
Hansatome microkeratome assembly away from the hinge.
Warning Modifications could damage the Bausch & Lomb Hansatome
microkeratome. Such damage could result in possible serious permanent patient
injury.
38. If, through manipulation, vacuum reserve is lost in the attempted fixation of the suction ring to the eye prior to commencing a cut, press the vacuum footswitch to return
to READY mode. Wait for vacuum reserve to build up. After vacuum reserve is
achieved, redepress and release vacuum footswitch and wait until the green light
comes on in OPERATING mode.
Warning If vacuum seal to the patient’s eye is lost during a cut, never attempt
to regain suction and continue, or to immediately repeat the procedure. Doing so
could result in serious permanent patient injury.
Warning Never attempt a keratectomy when the display indicates the READY
mode. Doing so could cause the blade to run in the absence of vacuum seal to the
patient’s eye, which could result in possible serious permanent patient injury.
39. NOTE: Do not turn the main power off while in OPERATING mode, except to
run short tests of the battery back--up feature of the Hansatome
microkeratome. This would eventually deplete the battery energy, requiring
factory replacement. Always return from OPERATING mode to READY
mode when turning off the power to the Hansatome microkeratome.
Operator’s Manual
12.
Bausch and Lomb, Incorporated
Rochester, NY 14609 U.S.A.
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