Asymtek Century C-721 Series, Operation Manual

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Introduction 2-7
Purge Station
The Purge Station is a small reservoir that contains a disposable plastic cup. A generator produces a
vacuum inside the reservoir. The dispensing nozzle or needle is inserted into the purge boot on the purge
station lid, where the vacuum removes residual fluid and cleans the nozzle or needle tip.
Stop Pin
Stop pins are pneumatic devices used to stop parts at each station.
Syringe/Fluid Cartridge
The syringe or fluid cartridge contains the fluid to be dispensed and is packaged in either small syringes
or long cartridges by the material supplier. Century Series dispensing systems can accommodate fluid
syringes of 5, 10, and 30 cc (0.17, 0.34, 1.01 fl oz), and fluid cartridges of 74 and 177 cc (2.5 and 6 fl oz).
The fluid is shipped with a Material Safety Data Sheet (MSDS), which provides handling and safety
instructions.
Temperature Controller
Temperature controllers are available in two types: 4-channel and 8-channel. The 4-channel unit can
control two part heaters, a Resistance Temperature Detector (RTD) device and one needle heater. The 8-
channel unit can control three part heaters, an RTD device and two needle heaters.
Tooling Mode Switch
With the Tooling Mode Switch, you can direct vacuum to the contact heat tooling, positive air pressure to
the impingement heat tooling, or turn off the air (Impingement/OFF/Contact).
Valve Pressure Gauges and Regulators
The Valve Pressure Gauges indicate the air pressure supplied to the fluid pumps. The Valve Pressure
Regulators are located underneath the front hood of the system. See the appropriate fluid pump manual
for the recommended setting for your pump. The maximum recommended setting is 621 kPa (90 psi).
Valve ON/OFF Fluid Pressure Air Lines
These are ports mounted on the right side of the Dispensing Head. The top row of three ports is for Valve
1; the bottom row of three ports is for Valve 2. The Valve ON, Valve OFF and Syringe airlines connect
to these ports. Air pressure for all three ports is set with the Valve and Fluid Pressure Gauges and
Regulators.
Vision System and Light Source
The vision system consists of vision processing cards located inside the computer, and the camera and
light source, which are mounted on the Dispensing Head. The light source may be a dual on-axis unit or a
single LED light ring.