Lincoln Centro-Matic P653S, Manual

Page: 10 / 48

Page Number - 10
Form 404372
Electric Operated Centro-Matic Pump P653S
Fig. 6 Activated vent cycle diagram
1 - activated venting element
6 - activated vent lever
7 - cam (driven by the motor counterclockwise)
Fig. 7 Display during braking application of pump motor.
Fig. 8 Display during change of moving direction of pump mo-
tor.
Fig. 9 Rotating segmented display during venting
(counterclockwise)
Fig. 10 Venting in the vent valve1 - Venting element
1.1 - inlet hole
1.2 -outlet hole
8 - plunger, venting
Pump Element operation
The pump element (Fig. 13 and 14) is a single stroke spring
biased pump. Motor drives the eccentric (1). Eccentric is in
constant contact with the plunger (2).
Compression spring (3) is pushing plunger (2) to open lubri-
cant passage to create vacuum to prime the pump with lubri-
cant from the reservoir. Check valve (4) is closed to isolate the
supply lines of the system.
Eccentric (1) is pushing the plunger (2) in opposite direction
to pump lubricant, developing the operating pressure. Check
valve (4) is open to pass the lubricant to supply lines.
The body of the pump element has a lateral outlet (5) (Fig. 12)
for lubricant crossporting to the internal material passages to
combine the outlet of all three pump elements.
Any one of the three elements can be used as a pump outlet.
The remaining two elements should be closed with plug (A)
(Fig. 12).
Fig. 12 Pump element Z7 for internal lubricant crossporting
A - Closure plug (connection G 1/4” for main line)
2 - Piston
3 - Spring
5 - Lateral outlet for lubricant crossporting
Fig. 13
Fig. 14
NOTE: Use only pump elements designed for operation in the
P653S pump. No other pump elements should be used. See
the parts listing for the correct pump element part number.
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