User's Manual

L12100
AIR-OPERATED PUMPS
DESCRIPTION
LubriSystem air-operated pumps (Figure 2) are available in two
lube-to-air power ratios to meet your system requirements. The
standard pump has a 9:1 ratio while the high-pressure pump
provides a 24:1 ratio. Output per stroke is 1.5 cubic inches (24.59
cm³) for standard pumps and 1.4 cubic inches (22.95 cm³) for
high-pressure pumps. Both pump bodies are made from strong,
lightweight aluminum and are furnished with a corrosion-resistant
coating. This coating provides a tough, durable, impact-resistant
fi nish which is exceptionally resistant to corrosion; excellent
for salt spray or humid environments. Pump piston and cylinder
bore are precision machined and fi nished to minimize wear and
discourage corrosion.
Reservoirs in several different sizes are available in transparent
plastic. All reservoirs mount directly to the pump and are easily
interchangeable. The level of lubricant in the reservoir is easily
checked due to the transparent plastic.
Figure 2. Air-Operated Pump
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SYSTEM SIZING AND CALCULATIONS
* To check that a system is not oversized for a pump, the following
calculations need to be performed:
1. Sum the output volume of all injectors used in the system.
2. Add the number of injectors used in the system and multiply by .004 cu.
in. This is total volume required to re-prime the injector.
3. Total system requirement is the sum of 1 and 2, and should be less than
50% of the total output per cycle for the pump selected. (The 50% is a
rule of thumb to allow for line expansion and fl uid compressibility.)
If totals are more than 50% of pump output, the following steps can be taken:
1. Select smaller injectors and increase system cycle frequency.
2. Split the system up and use 2 or possibly more pumps.