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5.3 LUBRICANT PUMP
System fluid delivery is powered by a small piston pump. This type of pump is commonly used in applications when
low flow rates are desired for chain lubrication. The system includes an air pressure regulator assembly to power the
pump.
PUMP SPECIFICATIONS
Each electrostatic nozzle is powered by a dedicated piston pump that features, per pump, one inlet for air, one inlet
for fluid, and one fluid outlet. Pump inlets and the outlet use 1/4 in. OD Push
-
to
-
connect fittings.
•
Pump air pressure limits are between 14.5
-
87 psi
•
Maximum temperature rating is 180°F.
•
Pumps feature Viton seals for compatibility with a wide variety of fluids
Figure 5.3
-
1: Standard
ADJUSTING THE PUMP
Use the adjustment stem on the top of each pump in conjunction with the pump cycle frequency (from the Spray
Control Panel) to control the flow rate. The adjustment stem will:
•
Extend out from top of pump (using counterclockwise turns) approximately 1/8 in. at its upper limit
•
Be inset into top of pump (using clockwise turns) approximately 1/8 in. at its lower limit
The adjustment stem will stop turning when it has reached the upper or lower limit, no additional torque is necessary.
Note:
Pump frequency may depend on the viscosity of lubricant used. Higher viscosity lubricants may
require lower pump frequencies.
The Piston Pump Duty Cycle (ON Pulse) is .1s. This rapidly discharges the oil from the pump cylinder and
maximizes the suction stroke of the pump, allowing more time for oil to fill the pump cylinder.
The duty cycle time
is important to consider when connecting solenoids to the piston pump. Incorrect connections can lead to pump
failure or stroke disruption.
Standard Pump
•
Minimum output, per cycle, per pump: 0.0018 in
3
/ 0.03 cc / 0.001 oz.
•
Maximum output, per cycle, per pump: 0.0366 in
3
/ 0.6 cc / 0.02 oz.
•
Each full clockwise turn of the adjustment stem starting from the upper limit
reduces
output by:
0.002 in
3
/ 0.03 cc / 0.001 oz.
•
Max flow rate:
48 cc/min
Note
: Each pump supplies at least two(2) nozzles, so the flow rates should be cut in half.
