719Pro
Calibration Manual
2
Clean the Valve Assembly
Occasionally, the Product may not work properly due to dirt or other
contamination of the internal valve assembly. Use the subsequent procedure to
clean the valve assembly. If this procedure does not correct the problem, order a
repair kit. See the “User-Replaceable Parts” section.
1. With a small screwdriver, remove the two valve retention caps located in the
battery compartment area.
2. After the caps have been removed, gently remove the spring and ring
assembly.
3. Set aside the valve assemblies in a safe area and clean out the valve body
with a cotton swab soaked in IPA (isopropyl alcohol).
4. Repeat the process several times with a new cotton swab each time until
there is no evidence of contamination or dirt.
5. Operate the pump handles several times and recheck for contamination.
6. Clean the O-ring assembly and the O-ring on the retention caps with IPA and
inspect the O-rings closely for any damage or excessive wear. Replacements
are included in the repair kit, if necessary.
7. Inspect the springs for wear or loss of tension. They should be approximately
8.6 mm long in the relaxed state. If shorter, they may not provide sufficient
seal tension. Replace if necessary.
8. Once all parts have been cleaned and inspected, reinstall the O-ring and
spring assembly into the valve body.
9. Reinstall the retention caps and gently tighten each cap.
10. Seal the output port and operate the pump to at least 50 % of capacity.
11. Release the pressure and repeat several times to ensure that the rings seat
properly.
Required Equipment
The equipment listed in Table 1 is necessary to do the performance verification
tests and calibration adjustment.
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