User's Manual

Modu-Flo

System 42000

1.2 GENERAL SYSTEM OPERATION

1-2

1.2.1 Figure 1-1 shows a functional schematic of a Modu-

Flo system.

1.2.1.1 The following steps outline the operating sequence

of a Modu-Flo system:

a. Lubricant stored in the reservoir or tank flows to the

manifold. The manifold may be mounted directly to the

reservoir or tank, or it may be mounted on a wall.

b. The manifold directs lubricant into the pump to fill the

pump chamber.

c. A controller energizes a solenoid valve to dispense and

the solenoid sends air or hydraulic fluid to the manifold.

Porting in the manifold directs the air or hydraulic fluid to

the pump, causing the pump to dispense lube to the

manifold outlet port.

d. When the controller releases the solenoid, air or

hydraulic fluid is redirected, causing the pump to retract.

On single-acting pneumatic pumps a spring pushes the

pump to the retracted position.

e. Lubricant from the reservoir flows through the manifold

and refills the empty chamber in the pump.

f. A pressure gauge, blowout disc, and high-pressure

switch are options which may be connected to the output

lube on the manifold. A signal from the pressure switch

can be used to actuate an alarm or warning light.

g. Low-level switch options are available for all tanks or

reservoirs. The switch provides an electrical signal

when lubricant level is low.