Operator`s manual

1-56 American-Lincoln
ATS 46/53
LP FUEL TANKS
The LP tank is located under the driver’s seat. Use only the proper size and type of LP tank. The ATS 46/53 LP
powered sweeper/scrubber uses a 33.5 lb. Liquid withdraw tank. The DOT designation of the tank is DOT 4BW-
240. Standard D.O.T. LP fuel tank sizes have 14, 20, 33.5, and 43.5 pound capacities. The liquid volume
permitted in these containers is less than the total volume of the cylinder. This provides for expansion of the LP
fuel in the case of a temperature increase above the normal amount. Excessive heat may cause the fuel to
expand too much, causing the safety relief valve to vent some LP fuel, relieving internal tank pressure.
Each tank is marked showing the type of construction (liquid or vapor), the manufacturer, the date of manufac-
ture, the capacity, the weight, and the date of requalification. D.O.T. fuel tanks must be requalified (checked)
periodically. This requalification must be recorded and maintained for the life of the container.
LP fuel tanks are equipped with the following approved valves and fittings:
*
Safety Relief Valve - This is a spring-loaded valve that relieves excessive pressures which may develop in
thetank due to unusual conditions.
* Liquid Service Valve - Liquid is withdrawn from the tank through this valve. The LP tank may be filled
through this valve if the tank is not equipped with a filter valve.
* Excessive Flow Valve - This valve is part of the liquid service valve. It is mounted inside the tank and
prevents LP fuel from leaving the LP tank in the event of accidental breakage of external fittings or hoses.
* Filler Valve - This valve is optional. If this valve is not present, the tank is filled through the service valve.
* Liquid Level Gauge - This gauge is optional.
LP TANK COMPONENTS
LPG INLET
PLUG
VAPOR
OUTLET
WATER
MOUNTING HOLES
P4563ecp FIGURE 54