Compact, reliable, horizontal, multistage, end-suction centrifugal pump with axial suction port and radial discharge
port. Pump materials in contact with the liquid are in stainless steel. The mechanical shaft seal is a special designed,
unbalanced O-ring seal. Pipework connection is via internal Whitworth pipe threads, Rp (ISO 7/1).
The pump is fitted with a 3-phase, fan-cooled, permanent-magnet, synchronous motor. The motor efficiency is
classified as IE5 in accordance with IEC 60034-30-2.
The motor includes a frequency converter and PI controller in the motor terminal box. This enables continuously
variable control of the motor speed, which again enables adaptation of the performance to a given requirement.
An operating panel on the motor terminal box enables setting of required setpoint as well as setting of pump to “Min.”
or “Max.” operation or to “Stop”. The Grundfos Eye indicator on the operating panel provides visual indication of
pump status:
• “Power on”: Motor is running (rotating green indicator lights) or not running (permanently green indicator lights)
• “Warning”: Motor is still running (rotating yellow indicator lights) or has stopped (permanently yellow indicator
lights)
• “Alarm”: Motor has stopped (flashing red indicator lights).
Communication with the pump is possible by means of Grundfos GO Remote (accessory). The remote control
enables further settings as well as reading out of a number of parameters such as “Actual value”, “Speed”, “Power
input” and total “Power consumption”.
The terminal box holds terminals for these connections:
• one dedicated digital input
• two analog inputs, 0(4)-20 mA, 0-5 V, 0-10 V, 0.5 – 3.5 V
• 5 V voltage supply to potentiometer and sensor
• one configurable digital input or open-collector output
• Grundfos Digital Sensor input and output
• 24 V voltage supply for sensors
• two signal-relay outputs (potential-free contacts)
• GENIbus connection
• interface for Grundfos CIM fieldbus module.
Further product details
Pump and motor are integrated in a compact and user-friendly design. The pump is fitted to a low base plate, making
it ideal for installation in systems where compactness is important.
The state-of-the-art design and materials of the shaft seal ensure high wear resistance, improved sticking and
dry-running capabilities and long operating life.
Servicing the pump requires no special service tools. Service parts are in stock for quick delivery and are available as
kits, single parts or bulk. Service videos are available on www.youtube.com.
Frequency converter operation offers these functions:
– controlled operation, i.e. consumption flucturates
– constant pressure
– communication with the pump.
Adaption of performance through frequency-controlled speed offers obvious benefits such as:
– energy savings
– increased comfort
– control and monitoring of the application and pump performance.
An operating panel on the motor terminal box enables setting of required setpoint as well as setting of pump to “Min.”
or “Max.” operation or to “Stop”. The Grundfos Eye indicator on the operating panel provides visual indication of
pump status:
• “Power on”: Motor is running (rotating green indicator lights) or not running (permanently green indicator lights)
• “Warning”: Motor is still running (rotating yellow indicator lights) or has stopped (permanently yellow indicator
lights)
• “Alarm”: Motor has stopped (flashing red indicator lights).
Communication with the pump is possible by means of Grundfos GO Remote (accessory). The remote control
enables further settings as well as reading out of a number of parameters such as “Actual value”, “Speed”, “Power
input” and total “Power consumption”.
Pump
A combination of a stop ring and a Nord-lock® washer secures a tight and reliable fixation of the impeller spacing
pipes to the splined pump shaft. It is possible to remove and fit the hydraulic parts from the pump side. The inlet and
outlet port are integrated in the pump sleeve. The inlet part, chambers and discharge part are hold together by four
staybolts and a retaining flange.
The pump is fitted with an unbalanced O-ring seal with a rigid torque-transmission system. It has a fixed seal driver
ensuring a reliable rotation of all parts. The dynamic secondary seal is an O-ring.
Seal faces:
• Rotating seal ring material: silicon carbide (SiC)
• Stationary seat material: silicon carbide (SiC)
This material pairing is used where higher corrosion resistance is required. The high hardness of this material pairing
offers good resistance against abrasive particles.
Secondary seal material: EPDM (ethylene-propylene rubber)
EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils.
The pump shaft is connected to the motor shaft through a left thread and tight fit. The shaft cannot be dismantled.
Motor
The motor is a totally enclosed, fan-cooled motor with principal dimensions to EN 50347. Electrical tolerances comply
with EN 60034.
The motor efficiency is classified as IE5 in accordance with IEC 60034-30-2.
The motor requires no external motor protection. The motor control unit incorporates protection against slow- and
quick-rising temperatures, e.g. constant overload and stalled conditions.
The terminal box holds terminals for these connections:
• one dedicated digital input
• two analog inputs, 0(4)-20 mA, 0-5 V, 0-10 V, 0.5 – 3.5 V
• 5 V voltage supply to potentiometer and sensor
• one configurable digital input or open-collector output
• Grundfos Digital Sensor input and output
• 24 V voltage supply for sensors
• two signal-relay outputs (potential-free contacts)
• GENIbus connection
• interface for Grundfos CIM fieldbus module.
