Service and repair
8-2
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
• To prevent possible personal injury, never attempt to push or pull a ventilator installed on
a cart while the brakes are set on the casters.
• To prevent possible personal injury and equipment damage, make sure the brakes on the
casters are set to prevent inadvertent movement of the ventilator during service.
• To prevent injury, never attempt to lift the ventilator without assistance. When lifting the
ventilator, lift from the base, use assistance, and take appropriate safety precautions.
• To prevent equipment damage, pull, rather than push, the ventilator over high thresholds
when using the cart to transport the ventilator. Ensure that the flex arm is positioned at
the front of the ventilator.
8.1.3 General repair guidelines
Follow these general guidelines when servicing the ventilator:
• Adhere to general repair safety instructions at all times.
• Always use metric tools to remove metric fasteners. Using nonmetric tools to remove
metric fasteners can damage fasteners.
• Use Phillips screwdrivers only to remove Phillips-head screws. Use POZIDRIV™*
screwdrivers only to remove POZIDRIV™* screws. Interchanging screwdrivers may cause
damage to screw heads.
• To prevent damage to electrostatic discharge (ESD) sensitive components, always follow
ESD guidelines when servicing the ventilator. Adhere to ESD control techniques when
repairing ESD-sensitive components.
• Use only recommended tools, test equipment, and service materials when servicing the
ventilator (Chapter 1).
• Take precautions to prevent dirt and other particles from entering the ventilator interior,
particularly the piston/cylinder assembly.
• As you repair the ventilator, perform any applicable cleaning and inspection procedures
listed below.
• Visually inspect any removed ventilator parts, including those removed to gain access to a
suspected faulty part. Inspect the exposed area behind the removed parts as well. Clean
removed parts to facilitate further inspection as necessary.
• Investigate and determine the cause of any detected abnormality. Repair the unit or
contact your regional Covidien Technical Support for help in diagnosing unresolved
symptoms.
• Replace or repair all parts that are worn, missing, damaged, cracked, corroded, burnt,
warped, bent, disfigured, or broken. Consult Chapter 9 for parts availability.
• The repair sections assume that the patient system, flex arm, oxygen, and humidifier are
already removed from the ventilator.
• When installing a new oxygen regulator, oxygen solenoid, pressure solenoid PCB, flow
sensor, or piston/cylinder assembly, always (1) input the calibration constants for the new
assembly into NVRAM (Chapter 4), and (2) affix the small calibration constants label
provided on top of the larger calibration constants label inside the lid.
Summary of Contents for Puritan Bennett 700 Series
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