Castle TSM-21 Diagnostic Manual - Manual (Page 23)

Castle Inc TSM-21 Diagnostic Manual v2 Page 23 of 63
Air “OUT” line to Clamp
SN: 61076
Pilot Valve, up to
Air “OUT” line from
Clamp Solenoid
Fig 7
2.
When a cycle is started, air should now come out of the Clamp Solenoid’s output port.
3. Attach an independent air supply directly to the bottom hose controlling the Pilot Valve.
The clamp should extend.
4.
When the independent air supply is removed from the bottom hose the clamp should re-
lease.
5. If the clamp doesn’t extend, or extends but doesn’t release, or constantly exhausts re-
place the Pilot Valve.
5.6.2 REPLACEMENT STEPS:
1.
Disconnect power and air from the machine.
2. Remove the two carriage bolts securing the Control Box and pull the box partially out of
the rear door.
3.
Remove the plastic nut that holds the Pressure Regulator assembly to the Control Box.
4.
Remove the two black hoses connected to the Pilot Valve.
5.
Remove the Pilot Valve from the brass fittings.
6.
Transfer the three white plastic fittings to the corresponding positions on the new Pilot
valve.