Max Machinery 370 User Manual

INSTRUCTION MANUAL

370 Series Level Controllers

TABLE OF CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 2

Level Controller Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 3

General Description and Basic Application Diagram . . . . . . .Pg 4

Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 5

370-000-350 © 2002, Max Machinery, Inc.

Max Machinery, Inc. reserves the right to make changes to the product in this Instruction
Manual to improve performance, reliability, or manufacturability. Consequently, contact
MMI for the latest available specifications and performance data.

Although every effort has been made to ensure accuracy of the information contained in
this Instruction Manual, MMI assumes no responsibility for inadvertent errors.

370-000-350 © 2002 Max Machinery, Inc. ( 1 )

Specifications

General Description

The Level Controller stores return fuel from the engine’s fuel injectors or carburetor and is replenished
by fuel passing through the flowmeter. The controller operates at atmospheric pressure and will present
no back pressure to the return fuel line. Vapor elimination of this fuel is also accomplished by the
controller’s internal screens.

Specifications

Materials of Construction:

Body

370-165-000 . . . . . . . . . . . . . . . . . . . . . . . . Aluminum (Gasoline, Diesel, Alcohols)

370-175-000 . . . . . . . . . . . . . . . . . . . . . . . . 303 Stainless (Gasoline, Diesel, Alcohols)

Valve orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Stainless

Valve Seal

370-165-000 . . . . . . . . . . . . . . . . . . . . . . . . Flourel (Gasoline, Diesel)

370-175-000 . . . . . . . . . . . . . . . . . . . . . . . . Special Nitrile (Gasoline, Diesel, Alcohols)

Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Stainless

Miscellaneous Levers . . . . . . . 370-165-000 . . . Brass

370-175-000 . . . 304 Stainless

Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Stainless

Maximum Fuel Flow Rate

Inlet Port (no vapor)*

Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 2200 cc/min

Alcohol . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 cc/min

Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500 cc/min

Return Port (< 1000 cc/minute vapor)*

Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3000 cc/min

Alcohol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 cc/min

Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 cc/min

Supply Port

This is the tank outlet. The fuel drawn from the tank must not exceed

the sum of the inlet port flow, and return port flow.*

Maximum Inlet Fuel Pressure . . . . . . . . . . . . . . . . . . . . 20 psi

Volume (w/10 psi supply) . . . . . . . . . . . . . . . . . . . . . . . . 202.1 cc

Maximum Temperature of Fuel

Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300F

Alcohol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1400F

Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000F

*NOTE: Flow rates approaching the maximum of either the Inlet Port or the Return Port

will reduce the vapor elimination capabilities.

( 2 ) 370-000-350 © 2002 Max Machinery, Inc.

Level Controller Drawings

370-000-350 © 2002 Max Machinery, Inc. ( 3 )

General Description & Application

Basic Application Description

The Max Level Controlled recirculation tank performs two basic functions: The recirculation tank function provides the
engine with a source of fuel and allows unburned return fuel to flow back to a tank which is at atmospheric pressure. The
tank is open to the atmosphere to eliminate back pressure on the engine’s fuel system as well as to vent bubbles removed
from the fuel. The tank is outfitted with a series of screens to collect the entrained vapor that often results from the mechani­cal action of the injector and/or heating of the fuel. These bubbles rise to the surface, while the engine is supplied with bub­ble-free fuel from the lowest port.

The level control function automatically feeds measured make-up fuel into the recirculation tank to replenish the fuel con­sumed by the engine. Afloat activated valve is used to maintain a consistent tank level. The valve opening is varied to regu­late the flow of pressurized fuel into the tank typically through a flow meter (see below).

( 4 ) 370-000-350 © 2002 Max Machinery, Inc.

Performance Curves

370-000-350 © 2002 Max Machinery, Inc. ( 5 )