Manual

Belowisabriefoverviewofwhathappenswhenyoufireyour
GEO3.1.Thelocationofpartsdiscussedinthetextbelowcanbe
foundonpages68-69.
AssumingtheGEO3.1isgassedupandturnedon
FIGURE27A 
showsthemarkerinitsidleposition.Thefiringchamberisfullof
compressedair,thepropshaftispushedbackintothebackcapby
thiscompressedair.Theboltisheldbackbytheairintheboltcan.
Boththefiringchamberandtheboltcanaresuppliedwithairviathe
solenoidvalve.
Providingaballisinthebreachwhenthetriggerispulled,asignal
issenttothesolenoidvalvewhichshutsoffthesupplyofairtothe
firingchamberandallowstheairintheboltcantobeexhausted.
Thisremovestheforceholdingtheboltinitsrearpositionandthe
boltispropelledforwards
(FIGURE27B) .
Astheboltpassesthefrontpropshafto-ringthefiringchamberseal
isbrokenandtheairinthefiringchamberventsdownthebolt,in
turnpropellingaball (FIGURE27C) .
Asairisventedfromthefiringchambertheforcepushingtheprop
shaftbackisovercomebythespringtensioninthebackcap.The
springpushesthepropshaftforward.Thefront14x2o-ringonthe
propshaftenterstheboltandsealsoffthefiringchamber
(FIGURE
27D) .
Thelengthoftimetheboltremainsinthisforwardpositionis
dependantondwell.Whenthesolenoidhascompleteditsdwell
time,airisroutedbackintotheboltcanandpushestheboltback
towardsitsrearposition.Simultaneouslythefiringchamberisre-
filledthroughthesolenoidvalvetotheoperatingpressuresetbythe
userviatheinlineregulator,andthepropshaftispushedintoitsrear
positionbytheairpressureinsidethevalvechamber
(FIGURE27E) .
OPERATiONAL OVERViEW
FIG27A
FIG27B
FIG27C
FIG27D
FIG27E
TECHNiCAL RESOURCES 67