SKF LINCOLN Centro-Matic P653S Serie Instrucciones De Uso Y Mantenimento página 10

Disassembled pump housing - view from bottom
1
3
1 Venting element
2 Integrated pressure switch
Idle run of switch joint on venting element
1
1 Inactive venting element
6 Switch joint
7 Cam (driven clockwise by motor)
3 Motor
4 Pump elements with integrated lubrication lines
1.69 in
(43 mm)
2.05 in
(52 mm)
7
6
Description of
Fig. 3
operation
Pump operation
Drive
• Pump housing consists of the following
components: gear motor, final gear drive,
three pumping elements connected
2
together by internal passages and vent
valve. Pump can be configured with
4
internal pressure switch or transducer.
• Gear motor shaft is connected to final
stage gear drive. Final gear has
incorporated eccentric and cam to drive
pumping elements and to control internal
vent valve († Fig. 4).
• Vent valve is a two way normally closed
Fig. 4
spring biased valve.
• Pressure switch is not adjustable and
preset to 3 500 psi (240 bar).
• Pressure transducer is adjustable.
Factory setting is 3 500 psi (240 bar).
Pressure setting of pressure transducer
can be adjusted from 1 400 to 4 600 psi
(96 to 317 bar) in
100 psi (6,9 bar) increments.
Lube cycle/pressurization
• Motor turns cam (7) clockwise to start
lubrication cycle. As soon as pump starts
to operate, display rotating segment is
turning clockwise also
(† Fig. 20, page 20). Maximum time to
build preset pressure is 12 minutes. If
pump does not build preset pressure, fault
signal E1 or E2 will appear on display.
• Vent valve (1) is normally closed and stays
closed during lubrication cycle, preventing
lubricant flow back to reservoir († Fig. 4).
• Output of three pump elements (4)
(† Fig. 3) is combined by internal
passages.
• Eccentric drives pump elements to pump
lubricant from reservoir and build line
pressure.
• Cam (7) will keep vent valve (1) closed.
• Supply line can be connected to any one of
the pump element outlets. Remaining two
pump elements outlets should be plugged.
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