Cleaning/Replacing The Vacuum Generator - Printronix SLPA7000 User Manual

Cleaning/Replacing The Vacuum Generator

Air flow through the vacuum generator creates the vacuum for the applicator
pad, allowing the label to be held in place. If the label is not retained on the
pad and the pad has already been inspected for leaks, then the vacuum
generator should be cleaned as follows.
1. Locate the vacuum generator inside the electrical enclosure, on the
applicator side of the SLPA (see Figure 33). The vacuum generator
housing will mark the pressure connection with a P and the vacuum
connection with a V. Label the respective tubes before disconnecting
them, to ensure proper reassembly.
Tube Fitting (2)
Figure 33. Vacuum Generator
2. Remove the two air lines attached to the vacuum generator by pushing in
on the tube fitting (red collar) to release tension on the flexible tubing.
Hold the tube fitting down while pulling the tube free.
3. Carefully wipe inside the tube fittings, using a small cotton swab
moistened with alcohol.
4. Using a low pressure air nozzle (90 psi. max. pressure) blow air through
the V port, then the P port using three - 2 second bursts.
5. Reconnect the vacuum generator and test the applicator pad's vacuum as
outlined in "Cleaning The Applicator Pad" on page 156.
Cleaning/Replacing The Vacuum Generator
Vacuum
Generator
P Port
V Port
Air Line (2)
157