Gauges; Chamber Pressure; Liquid Co Injection Pressure; Liquid Co Pressure - Cold Jet P1500 Operation Manual

Operation Manual

Gauges

Chamber Pressure

The chamber pressure gauge should indicate a maximum of 30 psig (2.1 bar) at the end of the
injection cycle. The pressure then drops rapidly to zero as the piston starts to advance.
Liquid CO Injection Pressure
2
The injection pressure gauge indicates Liquid CO
open. It should not indicate any more than a 20 psig (1.4 bar) drop from normal during the
injection cycle.
Liquid CO Pressure
2
The liquid CO pressure gauge indicates the Liquid CO
2
gauge, and the injection pressure gauge, should read within 20 psig (1.4 bar) of each other
during the injection cycle when Liquid CO
Vapor CO Pressure
2
The vapor pressure gauge may range from 150 to 300 psig (10.3 to 20.7 bar) and it is not
always the same as the Liquid CO
psig (10.3 bar) during the purge and chill down portions of the machine operating cycle.

Hydraulic Pressure

The hydraulic pressure should increase from 1000 psig (68.9 bar) to 2500 psig (172.3 bar) or
3000 psig (206.8 bar) during the extrusion cycle. The cycle should require no more than 12 to
13 sec. to complete. Timing is done from the rear proximity switch to the front proximity
switch.
Cold Jet, LLC
pressure in the line when the valves are
2
2
is at full flow rate.
2
pressure. The CO vapor supply must maintain at least 150
2 2
pressure supplied to the machine. This
P750/P1500/P3000
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