IMPORTANT:
READ MANUAL COMPLETELY BEFORE OPERATING THIS DEVICE
Basic delivery technique is described. Also, this manual contains instructions on periodically
required checks to be performed by the user. These checks are necessary to insure the proper
performance of this device and its safety features. Retain this manual for future reference.
WARNINGS AND PRECAUTIONS
These warnings and precautions are to help
you to understand how to safely operate the
MXR Flowmeter. A WARNING alerts you to a
possible hazard to people. A CAUTION alerts
you to the possibility of equipment damage.
WARNING: Do not use this device for the
administration of general anesthesia or as a
part of, or in conjunction with, a general
anesthesia administration system.
WARNING: Dental workers are exposed to
N
2
O during administration of N
2
O/O
2
conscious
sedation analgesia. NIOSH has
recommended that exposures should be
minimized. Contact NIOSH (1-800-35-NIOSH)
to receive NIOSH Publications on Control of
Nitrous Oxide in Dental Operatories. Exposure
can be minimized by effective controls.
National Institute for Occupational Safety and
Health (NIOSH) publications state that
controls, including System Maintenance,
Ventilation and Work Practices can effectively
reduce N
2
O concentrations in dental
operations. Your flowmeter accessory Porter
scavenger system is an important part of the
system of controls.
WARNING: Porter Instrument equipment
utilizes the cross+protection system. The
flexible hose and connectors that connect to
the flowmeter are diameter indexed; 3/8” O.D.
for Nitrous Oxide and ½” O.D. for Oxygen. The
cross+protection system is designed to
prevent misconnection of Oxygen and Nitrous
Oxide piping. DO NOT ATTEMPT TO
CHANGE THE DIAMETERS OR
CONNECTORS OF THE FLOWMETER!
Tampering with the cross+protection system
constitutes acceptance of liability by the
installer.
WARNING: New or modified installations -
properly connected gas pipelines are
absolutely essential to patient safety. The
dealer or contractor should provide written
documentation that all gas pipelines are
connected properly and that the system has
been pressure tested prior to use. While this is
a good business practice, it is important that
the user verify by their own test, independent
of the dealer or contractor, that all gas
pipelines are connected correctly prior to using
the system. The ultimate responsibility of
assuring that lines are not crossed rests
with the user.
WARNING: During any power outage,
remember to turn OFF the flowmeter and
manually turn OFF the tank valves. With
centralized, electrically powered gas systems,
if gas was flowing when the power went out
and the flowmeter is left ON, gas will be
flowing when the power is restored.
CAUTION: Federal law requires this device
for use by or on the order of a physician or
dentist.
CAUTION: Always use clean, dry medical
grade gases. Introduction of moisture or other
contaminants into this device may result in
defective operation.
CAUTION: Do not attempt to repair, alter or
calibrate this device. Unauthorized repair,
alteration or misuse of this device is likely to
adversely affect the performance and will void
the warranty.
CAUTION: Never oil or grease any part of this
system (minimize fire or explosion potential).
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