Welch Allyn 53 Service Manual page 60

Disassemble and Remove the NIBP Assembly
4 screws securing
the NIBP board
b. Remove the NIBP board.
NIBP Reassembly Notes
Warning You must characterize the NIPB module whenever you replace any
NIBP component (pump, tubing, air filter, check valve, or NIBP module).
If the NIBP module is not properly characterized, the pump could overinflate a
neonatal cuff, which could be hazardous to neonatal patients.
For information on NIBP characterization, see
The shorter tubing section contains the air filter. It connects to the pump input/suction fitting
on the outer edge of the front.
The longer tubing section contains the check valve. It connects to the pump pressure/output
fitting in the center of the pump and to the manifold on the NIBP board.
Service Manual
page 39.
60
Disassembly Procedure
Vital Signs Monitor Series 300