Manual

TECHNICAL RESOURCES

Essential illustrated diagrams and

component lists for the ETEK5.

ETEK5 MANUAL 63

OPERATIONAL OVERVIEW

Below is a brief overview of what happens during the ETEK5 ring cycle.

The location of parts discussed in the text below can be found on page 67-69.

Assuming the ETEK5 is gassed up and turned on, gure 32A shows the marker

in its idle position. The rammer is held in its rear position with pressurised air

from the LPR directed through the solenoid to the front of the rammer. The valve

chamber is full of pressurised air from the inline regulator.

Providing a ball is in the breech, when the trigger is pulled, a signal is sent to the

solenoid which redirects the supply of air from the front of the rammer to the rear,

which pushes the rammer and bolt forward toward the valve (gure 32B). As this

happens the air in front of the rammer is vented out through an exhaust port in

the solenoid valve.

The rammer makes contact with the exhaust valve and continues to be pushed

forward, now pushing the exhaust valve forward with it. This breaks the valve seal

allowing pressurised air to ow up through the valve guide and into the bolt and

vent down the barrel, propelling a ball (gure 32C).

The time that the rammer is held in this forward position is dependant on the

Dwell parameter. The longer the dwell time the longer the ETEK5 vents gas down

the barrel. When this dwell time has elapsed, the solenoid redirects the supply of

air from the back of the rammer to the front, pushing the rammer and bolt back

to the rear position. This loss of forward force allows the valve to re-seal and

the valve chamber is re-pressurised. As the rammer moves back air behind it is

vented through an exhaust port in the solenoid valve (gure 32D).

The ETEK5 has now completed one cycle.

FIG 32A

FIG 32B

FIG 32C

FIG 32D

Inline regulator supply

Air supply

from solenoid

Air supply

from solenoid

Air supply

from solenoid

Air venting

Inline regulator supplyAir supply

from solenoid

Air venting