Asymtek Century C-721 Series, Operation Manual

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Height Sensor 10-9
Probe Adjustments for HS-Series
To improve throughput and dispensing quality there are several adjustments you can make. You can
adjust the probe height in relation to the needle height, you can adjust the distance between the probe tip
and the needle tip, or you can adjust the up-and-down stroke length of the probe. Optimal adjustments
may vary with the dispensing pattern, the substrate material, and the needle size.
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NOTE The DP-3000 Series pump requires a special Height Sensor probe. If your dispensing
system is equipped with a DP-3000 Series pump, or if you have upgraded to one, contact
Asymtek for information about upgrading to the special probe.
Probe Height Adjustments
An operator can make small adjustments to probe height using the micrometer. Only a service technician
should make large adjustments to probe height. Service technicians can also adjust the distance between
the probe tip and the needle tip, as well as the gear up (GU) stroke length, if necessary.
To make small adjustments to the probe height:
1. Install the needle you will be using.
2. Loosen the micrometer locking screw (Figure 10-3).
3. Turn the micrometer adjustment to raise or lower the probe.
TIP
Use the ruler etched into the side of the micrometer to determine probe height.
4. When you are satisfied with the probe height, tighten the micrometer locking screw.
5. Perform either a
Prompted Setup
or a
Valve Offsets
routine before dispensing (see “Machine
Offsets Procedures” in the Operation section of this manual).