MDE-4334C Atlas Start-up and Service Manual · April 2008
Page 7-45
Hanging Hardware
Hydraulic/Mechanical Components
Figure 7-22: 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 Lock-Out and Tag-Out
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.
4
Check for damage to the nozzle, especially the spout and threads.
5
If the repair or replacement is the result of a drive-off, inspect the unit for structural, meter,
and piping damage. Repair or replace damaged components, as necessary.
Note: Meters, piping, and connections may leak after a drive-off.
6
Replace the breakaway if it is not of the reusable type.
7
Restore power to the unit and open shear valves.
8
Authorize the nozzle and check for leaks in the hose and plumbing, especially the meter and
filter.
9
Purge the system of air. See
on
for more information.
10
Perform a hose continuity test. See
Testing Hose and Hanging Hardware Continuity
.