Operation
12
3A5266D
Operation
Refer to F
IG
. 1 and F
IG
. 2, pages 5 and 6, for the follow-
ing instructions.
Pump
Start Up
1.
Verify reservoir is filled with lubricant and system
has been Primed (see Prime System, page 10).
2.
Turn on the lubrication controller (J) power switch.
3.
Program the lubrication controller to actuate the air
solenoid valve (C).
NOTE:
See the lubrication controller instruction
manual included with the system for these instruc-
tions.
4.
Open air regulators and master air valves.
NOTE:
Never allow the pump to run dry of the material
being the pumped.
At the start of a the pump cycle:
a.
The pump is supplied with air through the air
solenoid valve (C) and then to the pump air inlet
(R).
b.
Fluid is pumped to the lube metering device
until the air solenoid valve (C) is turned off.
c.
After the air solenoid valve (C) shuts off, the
pneumatic vent valve relieves the pressure in
the lubricant lines (A1 and A2).
d.
In systems using a vent valve, fluid pressure is
vented to the pump reservoir.
In systems using an electric vent valve, an elec-
trical signal to the vent valve is required to build
pressure. The same signal can be used to cycle
the air valve and close the vent valve.
Low Level Switch
(Models 17P751 (grease) and 17P753 (oil) only)
Oil Model 17P753
When the oil reservoir is full, the low level float (37) sits
in the high, raised position as shown in F
IG
. 11.
As oil is dispensed, the low level float (37) begins to
travel downward. When the oil in the reservoir reaches a
low level, the magnet in the bottom of the float activates
the low level switch (35), changing its state to either
open or closed.
Grease Model 17P751
As the grease is dispensed, the follower plate (45) trav-
els down the reservoir. When it gets close to the low
level switch (35), the magnet on the bottom of the fol-
lower plate assembly activates the switch, changing its
state to either open or closed.
Shut Down
To shut down the system, close the bleed-type master
air valve (F, page 5 and 6) and turn off the electric power
to the controller.
NOTICE
Running the pump dry will cause an air lock. To prevent
an air lock, do not run the pump without lubricant.
Always refill the pump reservoir before it is empty.
F
IG
. 11: Low level float in raised position
F
IG
. 12
37
35
45
35
35
