Service and repair
8-4
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
8.1.7 Electrostatic discharge control
It is important to follow ESD control procedures whenever the ventilator is repaired.
8.1.7.1 General information
ESD can permanently damage ESD-sensitive microelectronic components or assemblies when
they are handled and even when no direct contact is made with the component or assembly.
ESD damage may not be immediately detectable; however, ESD damage will show up at a
later time, either as a premature catastrophic failure of a component or assembly, or as an
intermittent failure, which can be difficult and costly to locate.
The following static-shielding bags are available to store 700 Series Ventilator System
components:
8.1.7.2 Procedures and precautions
Follow these procedures and precautions to prevent ESD damage to the ESD-sensitive
microelectronic components and assemblies of the 700 Series Ventilators.
•
Use a personnel grounding system.
Before opening the ventilator lid or removing
its cabinet panels, ensure that a personnel grounding system such as Covidien
P/N G-061661-00 (wrist strap, static-dissipative mat, and ground cord) is worn correctly
and is properly connected to a reliable ground.
•
Follow correct procedures for use of static-dissipative mat.
Place tools, test equipment
and the ESD-sensitive device on the mat before starting repairs. Conduct all work from
the mat. Never place nonconductive items (for example, foam cups) on the mat.
•
Handle ESD-sensitive components properly.
Do not handle ESD-sensitive component
connection points, connector pins, leads, or terminals.
•
Keep nonconductive materials away from work area.
Static charges from nonconductive
material (plastic containers, foam cups, synthetic clothing, cellophane tape, etc.) cannot
be removed by grounding. These items must be kept away from the work area when
handling ESD-sensitive devices.
•
Follow correct procedures for use of static-shielding bags.
Store and transport all ESD-
sensitive devices in static-shielding bags at all times except when being worked on. Never
place more than one ESD-sensitive device in a static-shielding bag. Never place static-
generating nonconductive material inside a static-shielding bag with an ESD-sensitive
device. Place any faulty ESD-sensitive device in a static-shielding bag immediately after
removal to prevent additional damage. Close the bag to ensure that shield is effective.
Part number
Description
G-061534-00
Electrostatic-shielding bag, 66 x 46 cm (26 x 18 in.), for UI display PCB
G-061533-00
Electrostatic-shielding bag, 28 x 38 cm (11 x 15 in.), for controller PCB, BBU PCB,
or pressure solenoid PCB
G-061532-00
Electrostatic-shielding bag, 13 x 20 cm (5 x 8 in.), for optoswitch
Summary of Contents for Puritan Bennett 700 Series
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