Nordson FP-200 - Replacing the Air Valve

Repair
7-14
Part 237478_03
E 2012 Nordson Corporation
Replacing the Air Valve
Use this procedure to replace the air valve inside the valve body. The valve
body is located inside the trigger handle shells.
1. Relieve hydraulic pressure (refer to the Relieving Hydraulic Pressure
procedure in Section3, Installation).
2. Move the applicator circuit breaker to the OFF position, then disconnect
and lock out input electrical power to the applicator (seeFigures7‐1
and7‐2).
3. Disconnect the gun‐to‐hose electrical connection.
CAUTION: Risk of burns. Wear protective gloves when performing this
procedure to reduce the risk of burns from hot melt or equipment.
4. Remove the trigger handle from the gun mounting plate as follows:
a. Remove the high‐temperature air line tubing by depressing the red
collar on the inlet air line elbow connector and pulling the tubing out.
b. Disconnect the inlet air line elbow connector.
c. Remove the two socket‐head screws and split‐lock washers that
secure the gun mounting plate to the trigger handle.
d. Disconnect the outlet air line swivel fitting from the bulkhead fitting
(extrusion gun) or the T manifold (swirl gun).