Preparing for Installation Preliminary Installation Information
MDE-5427E Latitude
™
Installation Manual · July 2022 Page 4-3
Adapting Pit Box
For installation using an existing pit box, some modifications may be required. The following
list highlights the changes that may be required. These installation considerations may also
apply when you are replacing competitive units.
To adapt the plumbing/conduit to Latitude stub up locations:
• Use care in sizing and routing f
lexible piping to avoid bends that restrict flow. This is
especially critical for pumps, which may have serious issues with flow or noise if the
flexible pipe cross section becomes significantly restrictive.
• Use flexible piping in the pit box for plumbing adaptation. This
is applicable only for
suction (pumper) systems; DO NOT use flexible piping on pressure systems. If piping in
the previous box is rigid, use the adaptability of the Latitude hydraulic cabinet inlets and
conduit entry points instead of making modifications to rigid plumbing and conduit in the
pit box.
• When adapting plumbing in the dispenser cabinet, remember that
the lower piping cross
brace must be used to secure plumbing above the shear valve and that rigid piping must be
used within the dispenser.
• Modify the pit box rain lip when required (for boxes designed for
The Advantage
®
Series
wide frame units). Modifications will also typically be performed to the Latitude base.
• When adapting a Latitude unit to
an existing pit box or one that is not specifically
designed for the unit, the rain lip may require modification or removal. If the rain lip is
removed, the entire base of the dispenser must be sealed to the island. Study the
foundation layouts and the existing pit box to determine if modifications are required
before mounting the unit on the island. When working in this area, refer to the following
warning.
Where fuels are involved, you are working in a potentiality hazardous environment where
fuels and their vapors may be present and could be ignited with sparks from grinding and
cutting tools.
Always conduct work at the required safe distance away from a hazardous area and use
the appropriate tools.
WARNING
Units with Ground Fault Interrupt (GFI)/Residual Current Device (RCD)
A GFI, also referred to as Residual Current Device (RCD) in some regions, consists of a
sensor that detects changes in the current to the load, by comparing the current flowing to the
load and the current flowing from the load. A drop-off in the current equivalent to about 25
milliamperes can turn off all power by tripping a relay within the GFI/RCD within a few
hundredths of a second.
When powering a dispenser with a GFI/RCD, the return neutral of a
ny device to which the
dispenser supplies power must be the same neutral as that of the dispenser. For example, the
STP control relay.
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