Service manual

48 Disassembly and repair Welch Allyn Spot Vital Signs
Pump and valve disassembly
Follow all the previous steps and then:
1. Disconnect the pneumatic tubing from the valve and pump.
2. Cut the wire tie and remove the two Torx screws.
3. Lift the valve and the pump from their respective locations on the rear housing.
Note
For proper blood pressure operation, replace the pump using only the Welch Allyn
specifed part.
To assure patient electrical isolation, do not modify the length of the pump wires.
Pneumatic Tubing
(pump)
Pneumatic
Tubing (valve)
Wire Tie
Torx Screws