Zenith BB-PEP Series, Оригинальная установка, уход и техническое обслуживание

Страница: 4 / 16

3
efficiencies. As BB-PEP pumps rely on the metered polymer for lubrication of internal bearing surfaces, the operating
speed is designed to be from 10 to 90 rpm on most extrusion processes depending on process parameters.
Do not allow the pump to run dry or attempt to pump poor lubricating fluids such as water or solvent.
When high-viscosity fluids are used, more time is required to fill the tooth volumes. As a result, the inlet pressure must
be increased or the gears must rotate at a slower speed to ensure complete volume filling. Proper speed and inlet
pressure must always be maintained to prevent cavitation and to ensure proper lubrication. Slip can occur across the
sides of the gears from the high-pressure side to the low-pressure side. The amount of slip depends on four factors:
polymer viscosity, speed, differential pressure and pump clearances. Under reasonably stable operating conditions, slip
is repeatable and predictable, and pump operation can be adjusted to compensate.
E. SPECIFICATIONS
Pump
Capacity
Operating
Speed
Differential
Pressure
Body
Pressure
Maximum
Temperature
cc/rev RPM psi (BAR) psi (BAR) °F
0.16 0-300 4800 (330) 4800 (330) 600 (950*)
0.297 0-300 4800 (330) 4800 (330) 600 (950*)
0.584 0-300 4800 (330) 4800 (330) 600 (950*)
1.168 0-300 4500 (310) 4500 (310) 600 (950*)
1.75 0-300 4500 (310) 4500 (310) 600 (950*)
2.92 0-300 4500 (310) 4500 (310) 600 (950*)
* With special fasteners and seals
Never operate with fluids that are outside of the original design constraints, if there is any question contact Zenith
Pumps immediately.
CAUTION ATTENTION
Operating conditions, such as speed, fluid viscosity, temperature, inlet pressure, discharge pressure,
filtration, duty cycle, drive type, mounting, etc. are interrelated. Due to these variable conditions, the specific
application limits may be different from that of the operational limitations. This equipment must not be
operated without verification that operating requirements are within its capabilities.