Gasboy Atlas Start-up - Manual (Page 16)

Read This First DEF Special Considerations
Page 1-8 MDE-4334D Atlas™ Start-up and Service Manual · July 2013
If DEF Freezes
If DEF freezes, proceed as follows:
1 Remove power to the pump and dispenser.
2 Check for any damage to breakaways, nozzles, hoses/hanging hardware, and meter. Perform
required repairs. Valve damage can often be detected by looking for seals slightly protruding
from the valve body (compared to the new valve). Hose breakaways may only partially
separate.
3 Correct the issue that is causing the loss of heat.
4 Thaw components of the dispenser. Dispenser units can be thawed using directed exhaust from
a vehicle, as long as electronic boards or connections are not present in the area. They can also
be thawed using a non-flame heating device.
Notes: 1) Electronic boards or connections must not be present in the area where you thaw the
components of the dispenser, as any resulting condensation may damage the
electronics.
2) Electrical cords or the heating device must not be used within a designated
hazardous area around any fueling pump or dispenser. To identify the designated
hazardous area, refer to MDE-4331 Atlas Fuel Systems Installation Manual.
5 Check for leaks. Some leaks can be significant. You may be required to turn off the unit
immediately.
6 Check if there is any damage to the above ground tank system or heated above ground
plumbing. For assistance, consult the tank manufacturer.
7 For more details on the significance and impact of freezing in DEF, refer to “DEF Heating
System (Commercial Cold Weather DEF Units Only)” on page 5-55 .
CAUTION
Certain special alternative fuels such as E85 and additives can degrade pump/dispenser
performance or integrity, if the dispensers are not designed for use with such fuels. Additionally,
converting to certain standard fuels (gasoline, diesel, kerosene, and so on) from alternative fuels
such as those with ethanol (E85), methanol, or biodiesel or from alternative fuels to standard fuels
can degrade dispenser performance or integrity. Similar effects can also occur when converting
units to different standard fuel types. As per Underwriters’ Laboratories (UL) 87A requirements,
nozzles dispensing E85 fuel and DEF must not be used to dispense any other type of fuel
such as Gasoline.
Leaks and potential environmental hazards can result or components may fail prematurely.
To avoid these issues, follow the guidelines for dispensing E85 fuel and DEF in this manual.