Lincoln Centro-Matic P653S, Manual

Page: 13 / 48

Page Number - 13
Form 404372
Electric Operated Centro-Matic Pump P653S
Possible Faults
• E1 Fault – A failure to build pressure at the pump within
the allotted 12 minutes of pumping time.
• E2 Fault – A failure to build pressure at the end of the
supply line.
• E3 Fault – A failure to vent at the pump. The internal
pressure transducer has 10 seconds to drop below 2600
psig when the motor reverses to locate the vent position.
• E4 Fault – A failure to vent at the end of the supply line.
The external pressure transducer has to drop below 900
psig before the next lube cycle takes place.
Venting Cycle
• After the pump completes the preset hold time and the
pump maintains the specified pressure, the controller
will initiate a vent cycle. The vent cycle will last for ten
seconds.
• The motor will turn counterclockwise to engage and open
the internal vent valve. The display’s rotating segment is
turning counter clockwise.
• The motor will stop in a position to hold the vent valve
open. “Hr” will be displayed for the remainder of the 10
seconds.
• The cam (7) (Fig. 6) engages the vent lever (6) depress-
ing the vent valve plunger (8) (Fig 10). This opens the
valve passage of the supply line to the reservoir.
• Lubricant is flowing back to the reservoir venting pressure
from the system. The valve stays open during pause time.
Filling reservoir with grease
Use grease fitting (9) (Fig 1) to fill the reservoir. Filling reser-
voir for the first time is critical to the proper pump operation.
Make sure no air is trapped under the follower plate. Grease
should be in full contact with the surface of the follower. It’s
recommended to run the motor by initiating the lubrication
cycle during the first reservoir fill. The stirring paddle of the
running motor will help to evenly spread the grease under fol-
lower minimizing air pockets.
Air Expelling Procedures for Pumps with Follower
Disconnect the low-level square type bayonet plug 8 (Fig. 1)
and unscrew the top lid (1)0 (Fig. 1) of the reservoir. Remove
lid and spring from the pump. Start filling the pump. As soon as
the grease level starts lifting the follower, stop filling and check
for air trapped under the follower. Use a plastic wire tie to expel
the air: push plastic tie between the follower seal and wall of
the reservoir and push the follower with hand until it completely
contacts the grease. Replace the lid and connect the low-level
electric plug. Finish the filling of the reservoir.
Pump with Follower Plate
Low-level control electromagnetic reed switch is located in the
central rod of the reservoir. The switch is sealed and does not
have any contact with grease.
The follower plate bushing has a magnet. As soon as the
follower reaches the preset position at the bottom of the reser-
voir, a magnetic field will close the switch to indicate the low-
level of the grease. The control panel display “LL” will be on.
The pump can be operational for some time since there is a
small amount of grease left under follower in the reservoir and
pump housing. The pump should be refilled as soon as pos-
sible. Always refill the pump to the maximum of the reservoir
capacity. The “LL” display should be “off” as soon as pump is
refilled.
Stirring paddle
The stirring paddle (3) (Fig. 2) is attached to the motor and ro-
tates during the lubrication cycle. The paddle is working grease
in the reservoir to make it more pumpable and at the same
time pushing the grease down into the housing and pumping
elements to prevent cavitation.
Low-level control
The pump model P653S is equipped with a low-level
grease control as a standard feature.
The follower spring is completely compressed if reservoir is
full of grease. Exercise extreme caution removing the top of
the pump.
Caution!
Make sure there is no air trapped under
follower plate. Grease should be in full
contact with surface of the follower. Use
“Air Expelling Procedures” if necessary.
© Indicates change
©
████████████████████████████████████████████████████████████████████████████████████████████