Introduction
HFA3 Instructions for Use
2660021166131 Rev. A 2018-11
1-8
• In case of emergency related to the instrument, unplug the power cord from the instrument
and call for service immediately.
• The projection lamp, Trial Lens holder and Liquid Trial Lens
™
, patient response button, external
keyboard, and fan filter are all user-replaceable parts. For the replacement of any other
instrument component, accessory, or peripheral, call ZEISS Customer Care: In the U.S., call
800-341-6968. Outside the U.S., contact your local ZEISS distributor.
• Although this instrument is designed for continuous operation, it should be turned off when
not in use for an extended period.
• This instrument operates according to specifications under standard indoor office (fluorescent)
lighting conditions, without exposure to any direct sunlight.
• Do NOT place the cover over the instrument when the HFA3 is turned on, as loss of proper
airflow can cause overheating and damage to sensitive components.
• Do NOT connect or disconnect cables while power is on.
• Do NOT place any objects on top of the instrument.
• Do NOT place any container holding liquid near the instrument.
Warnings and Cautions
WARNING: Do not block the ventilation openings. These allow for the release of
heat generated during operation. A buildup of heat due to ventilation opening
blockage can cause failures which may result in a fire hazard.
WARNING: To prevent electric shock, the instrument must be plugged into an
earthed ground outlet. Do not remove or disable the ground pin. Only an
authorized ZEISS service representative may install the instrument.
WARNING: Do not use the instrument or the optional power table with an
extension cord or a power strip (multiple portable socket outlet). Failure to
observe this warning could result in electrical shock to the patient and/or
examiner.
WARNING: Do not open the instrument covers. Opening the instrument covers
could expose you to electrical and optical hazards.
WARNING: If the instrument is externally connected to AC powered, non-medical
peripheral devices (for example; printers, storage devices), the complete system
must comply with the system requirements in standard IEC 60601-1. This standard
requires the usage of an Isolation Transformer to power the non-medical
peripheral device(s) if located within 1.5 m from the patient. If the peripheral
device is located outside the patient environment (beyond 1.5 m) and is connected
to the HFA, a separation device must be used or there shall be no electrical
connection between the non-medical peripheral device and the HFA. The HFA3
Ethernet port already has the required separation integrated within the HFA3
instrument, and therefore can be directly connected to peripherals located
beyond 1.5 meters.
The person or the responsible organization connecting additional devices or
reconfiguring the system must evaluate the complete system to ensure
compliance to the applicable IEC 60601-1 requirements.
The instrument operator must not touch the patient and the peripheral device
simultaneously.
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