Gasboy Atlas Start-up - Manual (Page 164)

Page 6-44 MDE-4334D Atlas™ Start-up and Service Manual · July 2013
Hydraulic/Mechanical Components Hanging Hardware
Breakaway Valves
Emergency breakaway couplings help protect against fuel spill, fire hazard, and equipment
damage. The breakaway valve stops significant fuel drainage from the dispenser during

drive-offs, if the nozzle or hose loop catches on the vehicle. Always use UL-listed
breakaways.
• For proper operation of the breakaway, always bolt the pump or dispenser securely to the
island. For pumps and dispensers, refer to Gasboy Atlas installation instructions.
• Some breakaway manufacturers require testing of pumps or dispensers for pull strength
before installing the device. Follow the manufacturer’s instructions.
• A hose retriever clamp must never be installed between the breakaway and nozzle.
• When installing a breakaway, always use a wrench on breakaway hex or wrench flats only.
• Always use a UL-approved pipe sealant suitable for the fuel involved for connections,
except on the O-ring fittings. Never use Teflon tape.
• Some breakaways are reusable. For inspection and reuse, follow the breakaway
manufacturer’s instructions.
Note: Do no reuse resettable breakaways beyond the number of allowed resets listed by
the manufacturer.
• Periodically and after all drive-off occurrences, check the breakaway hoses and couplings
for hose continuity. Refer to “Testing Hose and Hanging Hardware Continuity” on

page 6-46 .
Figure 6-23: Typical Breakaway
Breakaway
Hose
Spacer Hose
Side Dispensing Unit
Replacing Breakaways
To replace a breakaway, proceed as follows:
1 Close and test the shear valve. The unit may require multiple shear valve closures. Also, refer
to the manufacturer’s instructions.
2 Shut off power to the unit and associated STPs. Use OSHA lockout/tagout procedures.
3 Drain the nozzle and hose into an approved container. Clean up any spills promptly. Wear eye
protection. Be prepared for any residual pressure that may still exist in the hanging hardware.