HFA3 Instructions for Use
2660021166131 Rev. A 2018-11
Maintenance
8-1
(8) Maintenance
This chapter discusses instrument cleaning and customer-replaceable parts.
ZEISS recommends routine yearly service and maintenance of the HFA3 by a qualified ZEISS Field
Service Engineer.
Only an authorized ZEISS
service representative should calibrate the HFA3. Contact a ZEISS service
technician if you think your instrument requires calibration.
Cleaning the Instrument
Clean as often as is necessary. Use the methods and cleaners shown in the table below.
Note: Be careful to avoid scratching, discoloring, or staining the bowl surface. Prior to cleaning the
bowl surface, remove all jewelry as it can permanently scratch or damage the painted surface. Be
especially careful of long fingernails and fingernail polish contacting the bowl surface, as these can
mark or damage the painted surface permanently.
Note: During any bowl cleaning process, be careful to avoid getting either the distilled water or
isopropyl alcohol cleaning liquid inside of the fixation target openings or on mirrored surfaces.
Surface
Cleaner
Method
Exterior Panels
Mild detergent or appliance cleaner or glass
cleaner containing no ammonia.
Dampen a soft cloth with cleaner and gently wipe the
surfaces. Never spray the cleaner directly on the exterior
surfaces.
Bowl
(Please review the two cautionary
Notes that follow this table)
Dust cloth
Distilled water
70% Isopropyl alcohol in H
2
O
(Rubbing alcohol)
Remove accumulated dust from the bowl periodically.
Wipe the bowl gently with a clean, dry, soft cotton cloth.
Use downward strokes that move the dust toward the
front edge of the bottom of the bowl, where there is a
small opening around the base of the lens holder.
If dusting the bowl is inadequate, slightly moisten the
cloth with distilled water. Whether using a dry or a
dampened cloth, always avoid excessive rubbing in one
area, as this can create shiny spots or wear through the
specially painted surface of the bowl.
For small spots on the bowl surface caused by sneezing
or coughing during a test, slightly dampen a
cotton-tipped applicator with isopropyl alcohol and
gently remove the spot. It is best to wet the spot with the
tip of the dampened swab first and let it soak briefly.
Then, use the swab very gently to remove the deposit.
Touch Screen
Mild glass cleaner containing no ammonia.
Turn off the HFA before cleaning the touch screen. Wipe
gently with a moistened cloth. Do not spray cleaner
directly on the touch screen.
Forehead & Chin Rests
Mild detergent, alcohol wipes
After each patient, wipe gently using a dampened soft
cloth.
Patient Response Button
Mild detergent, alcohol wipes
After each patient, wipe gently using a dampened soft
cloth.
Table 8.1
