Service and repair
8-72
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
9.
Using 3-mm hex driver, remove two M4 x 12 screws and split-ring washers that attach
baffle to power supply (Figure 8-60). Remove baffle.
10. Remove six screws, and disconnect power supply/BBU PCB harness from righthand
terminal block on power supply (power supply output) (Figure 8-57). Transfer harness to
new power supply, as applicable.
NOTE:
• Reinstall existing baffle on new power supply. Failing to reinstall the baffle could
hamper proper air circulation, overheating power supply.
• When connecting BBU PCB/power supply harness to righthand terminal block, attach
three red wires to top three terminals. Attach three black wires to the next three
terminals. Any of the three black wires may go to any of the three positions. Any of
the three red wires may go to any of the three positions.
• When reinstalling power supply ground wire, install fasteners in this order: external
lockwasher beneath wire, flat washer, then nut.
Figure 8-60. Power supply baffle
Baffle
7-00217
Summary of Contents for Puritan Bennett 700 Series
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