A vacuum system attached to the turret can help clear chips from the prime cycle.
The arm cover will fit many shopvac hoses, however it may be necessary to print an adapter, as in the example shown above.
In order to control the timing of the vacuum, a relay is required. This will use a 12V signal from the control board to turn 120V on to the vacuum. Any mains relay that accepts a 12V control signal will work, such as this one:
Run a new wire pair from the relay to the "Aux" line in the turret. Aux is located behind the removable turret cover (with the Diabase logo). The connector type is 2-pin JST-SM. White is positive, black is ground/negative. This is a low-current control signal, so anything down to 26AWG wire will work. Run the new wire along the vacuum hose back to where the relay is located (typically next to the vacuum under the machine bench). Connect the wires to the relay control input according to the manufacturer instructions. Plug the vacuum into the normally open location of the relay.
The control signal is already configured in the tprime#.g files. These are the relevant lines:
; Turn on vacuum
M106 P8 S1
; Perform cleaning cycle
;Leave blades closed
M42 P22 S1
M42 P22 S0.4
; Move the nozzle so that if faces the bed
G1 U174 F9900
; Perform post-cleaning of the pliers
;turn off vacuum
M106 P8 S0
; Go back to the saved coordinates
G1 R1 Y0 F300
G1 R1 Z0 F6000