Lincoln Centro-Matic P653S, Manual

Page: 11 / 48

Page Number - 11
Form 404372
Electric Operated Centro-Matic Pump P653S
Pressure Control/Hold Time/Vent Cycle
Pump with internal pressure switch only:
Internal pressure switch will close at 3500 psig and open at
2600 psig.
After pump starts a lubrication cycle, motor stops when pres-
sure at pump reaches preset pressure of 3,500 psig (240 bar).
Pump will go through two holding periods, H1 and H2.
Holding Time (H1)
• Internal pressure switch must stay closed for 15 consecu-
tive seconds before going to H2. If internal pressure
switch opens during the 15 seconds, pump will restart and
run until internal pressure switch closes.
Holding Time (H2) - Will last for 30 seconds
• At the end of 30 seconds, if the internal pressure switch is
closed, the pump will begin a vent cycle.
• If at the end of the 30 seconds the internal pressure
switch is open, the pump will restart and run until the in-
ternal pressure switch closes. When it closes a vent cycle
will take place.
• If at the end of 30 seconds the internal pressure switch
is closed, but during the H1 hold time the internal pres-
sure switch did open, the pump will restart and pump for 2
seconds before a vent cycle begins.
Possible Faults
• E1 Fault – A failure to build pressure at the pump within
the allotted 12 minutes of pumping time.
• E3 Fault – A failure to vent at the pump. The internal
pressure switch has 10 seconds to open when the motor
reverses to locate the vent position
Pump with internal and external pressure switch:
Internal pressure switch will close at 3500 psig and open at
2600 psig. The external pressure switch will close at 2500 psig
and open at 1900 psig
After pump starts a lubrication cycle, motor stops when pres-
sure at pump reaches preset pressure of 3,500 psig (240 bar).
Pump can go through three holding periods, H1, H2 and H3.
Holding Time (H1)
• Internal pressure switch must stay closed for 15 consecu-
tive seconds before going to H2. If the internal pressure
switch opens during the 15 seconds, the pump will restart
and run until the internal pressure switch closes.
Holding Time (H2) - Will last for 30 seconds
• At the end of H2, if the internal pressure switch is closed
and the external pressure switch is closed, pump will
begin a vent cycle.
• At the end of H2, if the internal pressure switch is open or
both the internal and external pressure switches are open
an H3 will appear on the display. Pump will turn on again
and pump until the internal pressure switch is closed.
When both the internal and external pressure switches are
closed a vent cycle will take place.
• If at the end of H2 the internal pressure switch is closed
but the external pressure switch is open, the pump will
turn on for 2 seconds and then stop and wait until the
external pressure switch closes. An H3 will appear on
the display. When both the internal and external pressure
switches are closed a vent cycle will take place.
Holding Time (H3)
• Holding time H3 will remain until both the internal and ex-
ternal pressure switches are closed and then a vent cycle
will take place. If both pressure switches do not close
within the allotted pumping time of 12 minutes, an alarm
will occur. If the internal pressure switch opens during H3,
it will repump until the internal pressure switch closes.
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 sup-
ply line.
• E3 Fault – A failure to vent at the pump. The internal
pressure switch has 10 seconds to open 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 switch must be open before the
next lube cycle takes place.
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