MDE-4334C Atlas Start-up and Service Manual · April 2008
Page 7-49
Hanging Hardware
Hydraulic/Mechanical Components
5
To test the continuity, turn the meter On to conduct the test.
• Measure the resistance while flexing and moving the hose and nozzle into various
positions that could be reasonably expected during fueling.
• Keep good electrical contact between probes and contact locations.
6
UL330 states that resistance should not exceed 70,000 Ohms per foot (233,000 Ohms per
meter). If the test reading complies, this indicates that the hanging hardware has passed the
continuity test.
If test readings exceed 70,000 Ohms per foot:
• If you are testing to sheet metal or other locations in the pump or dispenser, perform the
continuity test instead, between the junction box and the end of the nozzle.
• Check the contact surface for corrosion, dirt, or film. If necessary, polish the test probe
location with emery cloth to ensure that there is good contact. Do not polish appearance
parts such as sheet metal and so on.
• If no problem exists, isolate the defective part by performing continuity tests between and
across the hose, nozzle, swivel, breakaway, and hose casting. Replace any part if the
resistance exceeds the manufacturer’s recommended maximum limit.
• Do not use components if the test reading shows an open circuit or any other defect.
Internal Hose Retrievers and Clamps
Read and follow all safety precautions as outlined in
Use OSHA Tag-Out and Lock-Out procedures.
Check hose retrievers regularly for frayed or broken cables and cables wrapped
around hoses. Check retriever reels for free movement and lubricate if needed.
Replacing Retriever Reels, Cables and Hose Clamps
To replace retriever reels, cables and hose clamps, proceed as follows:
1
Install hose onto the pump/dispenser.
2
Allow hose to assume a natural coiled shape while holding the hose upright on the island.
3
If retriever reel does not have the cable, connect the cable to the reel.
4
Load the retriever reel to the desired spring force.
5
Assemble the reel to the reel hanger.