SKF LINCOLN Centro-Matic P653S Serie Instrucciones De Uso Y Mantenimento página 15

• E2 Fault – a failure to build pressure at the
end of the supply line.
• E3 Fault – a failure to vent at pump.
Internal pressure transducer has
10 seconds to drop below 2 600 psi
(179 bar) (when motor reverses to locate
vent position).
• E4 Fault – a failure to vent at the end of
the supply line. External pressure
transducer has to drop below 900 psi
(62 bar) before next lube cycle takes place.
Vent cycle
• After pump completes preset hold time
and pump maintains specified pressure,
controller will initiate a vent cycle. Vent
cycle will last for ten seconds.
• Motor will turn counterclockwise to
engage and open internal vent valve.
Display's rotating segment is turning
counter clockwise.
• Motor will stop in a position to hold vent
valve open. Hr will be displayed for
remainder of 10 seconds.
• Cam (7) († Fig. 6, page 11) engages vent
lever (6) depressing vent valve plunger (8)
(† Fig. 10, page 12). This opens valve
passage of the supply line to the reservoir.
• Lubricant is flowing back to reservoir
venting pressure from system. Valve stays
open during pause time.
Fill reservoir with grease
Use grease fitting (9) († Fig. 1, page 6) to fill
reservoir. Filling reservoir for first time is
critical to proper pump operation.
Make sure no air is trapped under follower
plate. Grease should be in full contact with
surface of follower. It's recommended to run
motor by initiating lubrication cycle during
first reservoir fill. Stirring paddle of running
motor will help to evenly spread grease
under follower minimizing air pockets.
Air expel procedures for
pumps with follower
Disconnect plug (8) († Fig. 1, page 6) and
unscrew top lid (1) of reservoir. Remove lid
and spring from pump. Start filling pump. As
soon as grease level starts lifting follower,
stop filling and check for air trapped under
follower. Use plastic wire tie to expel air:
push plastic tie between follower seal and
wall of reservoir and push follower with hand
until it completely contacts grease. Replace
lid and connect low-level electric plug. Finish
filling of reservoir.
Stirring paddle
Stirring paddle (3) († Fig. 2, page 6) is
attached to motor and rotates during
lubrication cycle. Paddle is working grease in
reservoir to make it more pumpable and at
same time pushing grease down into
housing and pumping elements to
prevent cavitation.
Low-level control
Pump model P653S is equipped with a low-
level grease control as a standard feature.
Pump with follower
plate
Low-level control electromagnetic reed
switch is located in central rod of reservoir.
Switch is sealed and does not have any
contact with grease. Follower plate bushing
has a magnet. As soon as follower reaches
preset position at bottom of reservoir,
magnetic field will close switch to indicate
low-level of grease. Control panel display LL
will be on. Pump can be operational for
some time since there is a small amount of
grease left under follower in reservoir and
pump housing. Pump should be refilled as
soon as possible. Always refill pump to
maximum of reservoir capacity. LL display
should be off as soon as pump is refilled.
15
CAUTION

Make sure there is no air trapped under
follower plate. Grease should be in full
contact with surface of follower. Use air
expelling procedures if necessary.
Failure to comply may result in personal
injury or damage to equipment
WARNING

Follower spring is completely compressed if
reservoir is full of grease. Exercise extreme
caution removing top of pump.
Failure to comply may result in death or
serious injury.