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More than one pump can be driven through a single drive assembly, which is referred to as multiplexing.
The pumps are mounted on a common gear reducer assembly on the drive pump and the pump without
a gear reducer is called the driven pump. Each pump is mounted on its respective standard simplex
base. Each pump will have its own gear ratio.
Whenever pumps are multiplexed, the eccentric shafts are positioned to place a uniform load on the
driver. Before full disassembly, always note the relative positions of the eccentric shafts to each other
so they can reassemble in the same orientation.
Figure 15
5.
Installation
5.1 Location
When selecting an installation site or designing a skid package, consideration should be given to access
for routine maintenance.
PulsaPro pumps are designed to operate indoors and outdoors, but it is desirable to provide a hood or
covering for outdoor service. External heating may be required if ambient temperatures are below -40°F
are anticipated. Check with the factory regarding suitability of the operating environment.
The pump must be rigidly bolted to a solid and flat foundation to minimize vibration, which can loosen
connections. When the pump is bolted down, care must be taken to avoid distorting the base and
affecting alignments, check for levelness when securing. This will assure that the hydraulic oil is
maintained at the proper levels and that the check valves can operate properly.
