Air Intake Filter; Replacing The Stimulus Projection Lamp - Zeiss Humphrey Field Analyzer 3 Instructions For Use Manual

8-2
Maintenance

Air Intake Filter

To ensure proper cooling of the instrument, the air filter must be cleaned or replaced every three
months (Part Number 2660021149222).
1. Locate the air filter cover on the side of the instrument.
• Push down on the filter cover latch and open the cover.
• Remove the air filter.
Note: The air filter is marked with a notch on the bottom. Observe the proper orientation of the air
filter before removal and replace the air filter in the same orientation.
2. Clean or replace the air filter.
• For cleaning, shake the air filter a few times to dislodge trapped dust.
• The filter may be rinsed with water, but make sure the filter is completely dry before
installing.
• To replace the air filter, call the Carl Zeiss Meditec Parts Department and order a "Fan Filter"
(PN 2660021149222).
3. Return the new air filter or the clean and dry air filter to its proper location.
4. Close and latch the air filter cover.

Replacing the Stimulus Projection Lamp

This lamp is responsible for projecting the standard white stimulus. With the aid of color filters, it is
also used to create red and blue stimuli for color testing. If needed, order a new lamp by calling the
Carl Zeiss Meditec Parts Department and asking for PN 2660021148110 (Projection Lamp).
1. Turn off the HFA3 and lower the table. Open and remove the top access panel using an
implement to release the catch mechanism.
2. Standing in front of the bowl opening, the projection lamp is located inside the open case top,
at the 12 o'clock position. Allow the lamp to cool completely (approximately five minutes)
before handling it. Do NOT touch the two disk-shaped filters.
3. Remove the connector cable by pulling its connector straight upward. Then use a screwdriver
to loosen the screw.
HFA3 Instructions for Use
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2660021166131 Rev. A 2018-11