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46 WU017834 Rev. 05 July 2023 Wayne Fueling Systems | Dover Fueling Solutions
5.4 PRIMING SUCTION PUMPS (SUCTION DISPENSERS)
Suction pumps must be primed before their initial operation. It is not advisable to run any type of internal
gear pump dry during the priming process. It is also recommended to check and adjust the bypass valve
pressure. See Appendix D,
Helix Dispensers with a Compact Pumping Unit (CPU), on page 111.
5.5 BLEEDING PRODUCT LINES (REMOTE DISPENSERS)
NOTE! To avoid severe damage to the dispenser, all air and air pockets must be bled from the product trunk
lines before attempting to dispense product.
Perform the following steps:
1. Make sure the power to the appropriate submersible pump is OFF.
2. To bleed air from a trunk line, remove the pipe plug from the safety impact valve on the dispenser far-
thest from the storage tank.
3. Attach a flexible hose to the pipe plug opening in the safety impact valve. If a hose has already been
installed on the dispenser, skip to next step.
4. Energize the appropriate submersible pump and allow the air to bleed out of the trunk line into a test
can until product flows into the test can. De-energize the submersible pump and replace the pipe plug.
Repeat the procedure for each product and each trunk line.
5.6 AUTHORIZING THE DISPENSER VIA STANDALONE MODE
In order to dispense product, the dispenser must be authorized. A dispenser in Standalone Mode (i.e. not
connected to a POS Control System) is ALWAYS authorized, unless the dispenser is equipped with an
optional Authorize Keyswitch on the bezel. This momentary contact keyswitch can be used for one-time
authorizations.
To set the Filling Mode to Standalone Operation:
1. Access the Filling Mode in programming Function F01.
2. Set the sub-function to ā2ā for Standalone Operation.
NOTE! When connected to a POS Control System, the system programming determines authorization.
NOTE! The JP1 jumper (Local Authorize Switch) must be installed on the Sales Display Board in order to put
the dispenser in Standalone Mode. Once the dispenser is switched to a POS Control System, the
Local Authorize Switch should be removed. See Section 5.16,
Security Precautions, on page 52.
Dispenser Filling Mode
Function F01
Stand Alone Mode: Sub-Function .02 (F01.02)
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