Lincoln Centro-Matic P653S, Manual

Page: 41 / 48

Page Number - 41
Form 404372
Electric Operated Centro-Matic Pump P653S
Troubleshooting
Mode of failure
Pump motor does not run. No green right corner segment lit on
display (Fig. 18 page 15).
Pump does not deliver lubricant but runs if manual lube switch
3 (Fig. 17 page 15) is pushed. No green left corner segment lit
on display (Fig. 19 page 15).
“LL” display is flashing. Reservoir is almost empty.
“E1” display is flashing. Pump failed to develop internal pres-
sure in 12 minutes.
“E2” display is flashing. Pump failed to develop pressure at the
end of the line (pump with external pressure switch or pres-
sure transducer)
“E3” display is flashing. Pump failed to vent at the pump.
“E4” display is flashing. Pump failed to vent at the end of the
line (pump with external pressure switch or pressure trans-
ducer).
Grease is coming out of the pressure relief valve (6) (Fig.1).
Solution
Check power supply and fuses.
Connect “ignition” or “machine” switch per electrical schematic
on pages 28 and 29.
Pump with follower - refill reservoir. Pump without follower –
refill reservoir and push switch (3) (Fig 17) to initiate manual
lube cycle.
Push switch (2) (Fig 17) to acknowledge the fault. Initiate
manual lube cycle. Investigate and correct possible causes –
air pockets, broken line, connections leakage, worn pumping
element, failed internal pressure switch or pressure transduc-
er. Initiate manual lube cycle.
Push switch (2) (Fig 17) to acknowledge the fault. Initiate
manual lube cycle. Investigate and correct possible causes
– air pockets in lubrication line, connections leakage, grease
consistency changed with low temperatures, failed end of line
pressure switch or pressure transducer.
Push switch (2) (Fig 17) to acknowledge the fault. Initiate
manual lube cycle. Investigate and correct possible causes
– pump eccentric did not stop in a proper position, vent valve
failed
Push switch (2) (Fig 17) to acknowledge the fault. Initiate
manual lube cycle. Investigate and correct possible causes
– restriction in lubrication line, grease consistency changed
with low temperature, failed end of line pressure transducer or
pressure switch.
Check and adjust setting of the pressure transducer or failed
pressure switch.
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