Healy VP1000-5, Troubleshooting Manual, Page: 10 / 19

10
Section Five: VP1000-5 Performance Testing
This section of the guide is to assist installers, operators, and other personnel on properly troubleshooting the
VP1000-5 when no fault condition is present upon arrival at the site.
Perform a dispenser vacuum integrity test per steps
B-3 and B-4 of the A/B sheet (Refer to Appendix B).
Does the
integrity test pass?
Confirm that meter creep is not present. Check for leaks in
the vapor piping (Loose fittings, Pipe tape missing from
threaded connections), hanging hardware (O-rings / quad
ring damage), and perform a bag test at each nozzle on the
affected dispenser.
No
Yes
Retest
Review Maintenance Log and ISD
Warning/Failure alarms for recent activity.
Verify the performance of the VP1000-5 per B-5 of
the A/B sheet. Refer to Appendix B)
Is the
vacuum level produced
by the VP1000-5 between
60 and 90"
WC?
Disconnect the white reset plug on the MC100-1. Remove
the VP1000-5 front cover to evaluate the rotor/vanes for
wear and/or damage. Refer to Appendix C. Confirm that no
vanes are missing or stuck in the rotor. Check for debris
and/or damage to the cover assembly. Confirm that the
VP1000-5 shaft can turn freely by hand
No
Yes
Install a 0-100" WC vacuum gauge at the test tee.
Retest
Is the
VP1000-5 running at
low or high speed when neither
side of the dispenser is authorized
and the ambient temperature
is above 40ºF?
Check for a leaking input voltage. Refer to Appendices E and F. Yes
No
Continued on
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To ensure accurate testing results, service personnel must
control both sides of the dispenser by using cones and/or a
service vehicle to block the entire dispenser.