OPERATION & MAINTENANCE
4.1
MANUAL OPERATION – SWITCH / PUSHBUTTON
CONTROLS
Note: Manual operation is not satisfactory for production purposes and should only
be used to check the pelletizer for proper operation. For pelletizers that have two
cylinders, do not operate both cylinders manually at the same time.
1. Turn on electrical power to the control panel.
2. Be sure the EMERGENCY STOP button is pulled out.
3. Turn the MAN/AUTO switch to the MAN (manual) position.
4. If the pelletizer has two cylinders, place the A/B/A&B switch to the desired cyl-
inder, either A or B. Do not operate both cylinders manually at the same time.
5. Place the corresponding injection switch (A INJ or B INJ) to OFF.
6. Be certain that the compression cylinder is completely retracted and inject liquid
CO
2
into the compression cylinder by holding the injection switch (A INJ or B
INJ) in MAN (manual) position for 20 - 30 seconds, and then release the switch.
Note: The injection switch will not lock in the MAN (manual) position and
must be held for the duration of the liquid CO
2
injection
7. Extrude dry ice through the extrusion die by holding the corresponding cylinder
switch (A CYL or B CYL) in EXT (extend) position until the cylinder fully ex-
tends, and then release the switch.
WARNING
DO NOT INJECT LIQUID CARBON DIOXIDE INTO
THE CYLINDER UNLESS THE CYLINDER IS COM-
PLETELY RETRACTED. DOING SO WILL RESULT
IN CARBON DIOXIDE BEING INJECTED BEHIND
THE PISTON AND WILL RESULT IN DAMAGE TO
THE COMPRESSION CYLINDER, PISTON AND ROD.
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