Pneumat Systems Cardox CO2, Technical Manual

Page: 21 / 30

Cardox Techical Manual
Page 21
Problem Cause Solution
Tube misfires, cont. Defective Safety Heater.
Loss of continuity in circuit.
Low voltage from blasting unit.
Low CO2 volume in charged tube.
Bleed off CO
2
, remove fill head,
and remove bad heater and re-
place. Rebuild, refill tube and
retest.
Check connections at blaster and
at fill head. If connected properly
check continuity through firing
wire. If continuity is correct see
solution for open circuit in previous
section.
Periodically test fire blaster prior to
use. If the "fire" light is dim re -
place the 9-volt battery and retest.
Low CO2 volume will result in
either an unburned heater or a
partially burned heater and a
unruptured shear disc. Rebuild,
recharge and reweigh to insure
correct volume of CO2. If still low
check the CO2 cylinder for a low
level. Replace cylinder if neces-
sary. If CO2 level in tank is fine
clamp the tube back into fill stand,
increase the pump input pressure
and recycle pump. Repeat this un-
til CO2 volume is above minimum
amount.
The shear disc may be bulged but
not sheared through. The cutting
shoulder on the discharge head
must be sharp and unpitted. If
edge is not sharp the shear disc
will bulge but not rupture. If cutting
shoulder is rounded send head to
Pneumat Systems for repair.