Circor IMO E12L Series, Product Service Manual

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F. OPERATION
F.1 LIQUID LIMITATIONS
Never operate with thin liquids such as solvents or water. The pump is designed for liquids
having the general characteristics of oil.
F.2 OPERATING LIMITS
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 verifying system’s
operating requirements are within the pump’s capabilities.
Under no circumstances are the following operating limits (specified in Table 2) to
be exceeded without specific approval from Imo Pump.
Table 2 – Normal Pump Operating and Structural Limits
MAXIMUM SPEED .............................................................. Rotor sizes 118 thru 156 4400 RPM Rotor
size 187 thru 200 3600 RPM
VISCOSITY .................................... 45 SSU (5.8 cSt) Minimum – 3000 SSU (650 cSt) Maximum
NOTE: Consult factory for allowable operating viscosities at specific speeds and pressures.
DO NOT alter design viscosity without prior consultation with Imo Pump.
MINIMUM – MAXIMUM LIQUID TEMPERATURE .............................. 0 to 250F (-18 to 121C) MAXIMUM
INLET PRESSURE ......................................................................................... 200 psig
NOTE: Series 12L pumps are designed for positive inlet pressures. The unit should not be
operated for extended periods of time with inlet pressure less than atmospheric.
MAXIMUM DISCHARGE PRESSURE ............................. Rotor Size 118, 4000 psig, Cont. Duty
Rotor Sizes 137 thru 200 4500 psig, Cont. Duty
NOTE: Consult Imo Pump for 5000 psig operation
FILTRATION. ...................................................................(See Imo General Installation Operation, Maintenance,
and Troubleshooting Manual, SRM00046)
DRIVE ...........................................................................................................................Direct only ROTATION
.................................................................................................Clockwise only facing pump shaft MOUNTING
..............................................................................................................Foot or Flange mounted in any attitude
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