3CR/4CR Multistage Centrifugal Pump Range General Product Description
PERFORMANCE RANGE
Flow rate up to 120 L/min (7.2 m³/h)
Dynamic head up to 50 m
COMPACT, EXTREMELY QUIET, HIGH OUTPUT, LOW CONSUMPTION
PUMPS WITH STAINLESS STEEL BODY, FOR DOMESTIC & COMMERCIAL USE.
OPERATING LIMITS
Suction lift up to 7 m
Fluid temperature up to + 40°C
Maximum ambient temperature + 40°C
PUMP INSTALLATION AND APPLICATIONS
Shower
Pump Installation Instructions
These pumps are suitable for handling clean water
and fluids which are not chemically aggressive to the pump components.
THEY ARE EXTREMELY RELIABLE, QUIET AND VIRTUALLY
MAINTENANCE-FREE, FINDING MANY USES IN DOMESTIC AND LIGHT COMMERCIAL
APPLICATIONS.
THEIR PERFORMANCE CHARACTERISTICS AND LOW NOISE MEANS THAT CR PUMPS
ARE PARTICULARLY SUITED TO WATER SUPPLY APPLICATIONS (INCLUDING
BOOSTING DOMESTIC MAINS PRESSURE*) AND FOR LARGE OR MULTIPLE SHOWER
APPLICATIONS.
These pumps should be installed in a covered area,
protected against the weather.
PERFORMANCE
The working principle of multistage pumps gives
high pressures without excess capacity while retaining the clear
advantages of centrifugal pumps. Pumps in the 3/4CR range have the
following features.
- stable characteristic curves (very high ratio
between maximum and minimum head values);
- very low noise levels at any duty point;
- low power consumption for the head values
achieved;
- good suction capacities.
Curve tolerance according to ISO 2548.
STRUCTURAL CHARACTERISTICS
- AISI 304 Stainless steel PUMP BODY with
UNI ISO 228/1 gas threaded suction and delivery ports.
- AISI 304 stainless steel back plate serving
also as mechanical seal housing.
- IMPELLERS, centrifugal radial flow type,
made of General Electric Noryl technopolymer (approved for drinking
water).
- AISI 416 stainless steel MOTOR SHAFT.
- Ceramic and graphite MECHANICAL SEAL
- MOTOR: the pumps are coupled directly
to an asynchronous, high efficiency PEDROLLO induction motor of
suitable size, which is quiet running, closed and externally ventilated,
suitable for continuous duty. INSULATION class B.
A thermal cut-out device (motor protector) is incorporated
in single phase motors.
Three phase motors require an adequate external
motor protector connected according to current standards.
- PROTECTION IP 44.
- CONSTRUCTION AND SAFETY STANDARDS in compliance
with EN 60 335 -1, (IEC 335-1, CEI 61-150), EN 60034-1, (IEC 34-1,
CEI 2-3)
- REGISTERED MODEL
*Installations must comply to Water Bye-laws in the UK.
PERFORMANCE CURVE
PERFORMANCE DATA
PRODUCT DIMENSIONS
