4. Assembly/ 5. Design and function
4.1 Information on assembly
The assembly procedure for KFG pump units is
described in detail in the assembly instructions
associated with these operating instructions.
Information/instructions about assembling the
KFG (S) (L) (C) pump units beyond the scope of
the assembly instructions are contained later
in this chapter.
4. Assembly
4.2 Assembly procedure for
KFG (S) (L) (C) pump
Assembly must be performed in accordance
with the included assembly instructions
and the additional information/instructions
contained in this chapter.
5. Design and function
KFG KFGS KFGL KFGC
5.1 General information
Pump units of the KFG, KFGS, KFGL and KFGC
series are electrically driven reservoir pump
units (piston pumps) available with and without
an integrated control unit. The pump ensures
demand-based supply of lubricant to central-
ized lubrication systems with progressive feed-
ers or single-line distributors on machines,
systems, and vehicles.
The pump units differ in terms of the size and
type of lubricant reservoir, the lubricant filling
and their control and function monitoring.
Powerful CAN bus control system variants
allow one unit and a special valve to supply
up to four independent zones according to
demand.
Note!
The exact pump designation of the CAN bus
version consists of the particular order code
and begins with the KFGC designation. This
pump design is listed below under the KFGC
designation for the sake of simplifying the
descriptions.
5.2 Design
Pump units of the KFG, KFGS, KFGL and KFGC
series are characterized by their compact con-
struction and are divided into the assemblies
for pump housing, lubricant reservoir, control
unit, and fill level monitoring.
A short description of the individual assem-
blies follows below.
5.2.1 Pump housing
The pump housing contains, among other
things, the pump drive, control unit (KFGS,
KFGL, KFGC) and three lubricant outlets for in-
stalling a maximum of three pump elements.
One pressure regulating valve can be attached
to each pump element. When used in sin-
gle-line systems, a pressure relief valve with
an integrated pressure regulating valve is at-
tached to the pump element (max. 2 lubrica-
tion zones per pump with KFGL).
An optional filler socket can be installed on the
pump housing as an alternative to the conical
head nipple, to allow filling of the pump when
used at low temperatures.
Page 52
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