Gasboy Atlas Fuel Systems Site Prep Manual - Manual (Page 30)

Site Preparation Plumbing Requirements
Page 26 MDE-4333E Atlas Fuel Systems Site Preparation Manual · November 2011
Important Considerations for DEF Dispensers
Applicable during Installation and Operation of the Dispenser: DEF freezes at approximately
11 °F (-11.5 °C). Power to the dispenser and heater must always remain ON in cold weather. If
power is lost and the temperature drops below this point, the system must be inspected for freeze
damage before restart. For sites that experience occasional power losses or for sites that are
located in very cold climates, it is recommended that a back up power generator be used to
maintain constant power to the dispenser. Do not use any additives to lower the freezing point of
DEF. Additives of any type must not be used in DEF.
Prolonged storage at temperatures above 77 °F (25 °C) can impair the quality of DEF and reduce
its shelf life.
CAUTION
DEF is mildly corrosive. It can corrode components that are made from incompatible material(s)
and reduce their integrity. The use of incompatible material(s) may lead to leaks and spills, and can
contaminate and degrade the DEF. When dispensing DEF, verify with the manufacturer if the
material of all plumbing components are compatible with the DEF being dispensed.
CAUTION
Do not use Prover Cans meant for engine fuel with DEF or vice versa. Use stainless steel Prover
Cans for DEF. DEF and engine fuel must not be mixed with each other or be contaminated by each
other. Else, damage to a vehicle’s engine or pollution control devices could occur. DEF crystallizes
as its water base evaporates. Pouring out liquid will not guarantee that no corrosive DEF remains in
the Prover Can. DEF must not be contaminated with Diesel fuel, contaminants, or other fluids or
materials. Such contamination can cause serious damage to vehicle catalytic converters.
CAUTION
• Conventional fluid handling precautions are also applicable to DEF.
• Avoid contact with eyes, skin, and clothing. Ensure that eyewash stations and safety
showers are close to the work location.
• DEF is mildly corrosive and non-flammable.
• Clean the DEF spill with water and dry the area with clean rags, especially areas that
contain metallic parts. Spilt DEF can be slippery and will corrode certain types of metallic
parts. Wear eye protection and rubber gloves during any cleanup activity.