Condensate pumps Electric pumps
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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2022
TI-P681-12 CMGT Issue 2
CRU 200 and 500 Series Condensate Recovery Units (VSD pumps)
Description The Spirax Sarco CRU 200 and 500 condensate recovery units with VSD (variable speed drive) pumps are designed to handle hot flashing condensate, which is commonly used as boiler feed water. The pumps have variable speed drives which provide significant energy saving over traditional fixed speed pumps. The standard range can handle quantities up to 20 m³/hr, duty/ assist up to 98 °C (receiver temperature) with varying delivery heads up to 49 m. For duties outside these parameters please contact Spirax Sarco. The package comprises of receiver, frame, pumps, valves and level controls. Note: System head regulation valves are not supplied as part of this unit. The finished unit is leak tested. It is recommended that a regulation valve is incorporated into the discharge pipework. Receiver Receivers are manufactured from 304 stainless steel. They are fitted with an adequately sized vent, overflow and inlet connections flanged to PN16. A water level gauge is fitted as standard, with integrated level control and high alarm. Frame The frames are manufactured from stainless steel 304. Pumps (variable speed drive) Pump housing and impellers are constructed from stainless steel and are designed for low NPSH conditions to handle hot condensate with the minimum of flooded suction.
There is a graphical display on the “primary” pump providing system performance data. On the “secondary” pump there is a visual status indicator. The pumps include a frequency converter and PI controller, this enables continuously variable control of the motor speed, to maintain a constant level within the receiver. The motor efficiency is classified as IE5 in accordance with IEC 60034-30-2. IP Protection: Pump enclosure IP55. Control The units are preconfigured to provide a plug and a play solution. Receivers are fitted with Spirax Sarco Colima Viscorol level indicator providing a 4-20 mA level signal. The system offers duty/assist control of the pumps to maintain a factory set constant level within the receiver. The control system will alternate the duty cycle and provide equal usage on each pump. To achieve the Maximum stated Condensate load both pumps will need to operate together. Should one pump fail the other will continue to operate and attempt to maintain a steady level in the receiver. Dry Run protection is included to shut off the pumps in the event of the receiver being completely emptied , thus preventing pump damage. Included is dry run protection to prevent the pumps being operated without a condensate load, thus preventing pump damage. The unit includes lamps (Power on, warning, alarm, and high level )to display its operational health, plus volt free contacts for remote indication. Electrical supply: 380 V 4 wire 3 phase 50/60 Hz <16 A. Volt free contacts: 3-off double throw relay outputs, maximum switching voltage is 240 Vac or 125 Vdc. Switching current 10A Max. Pump fitting The motors and pumps are mounted under the receiver and are each connected to suction pipework incorporating isolation valves. Each pump discharge is fitted with a non-return valve suitable to connect to a PN16 flange. IP Protection: Control panel enclosure IP65.
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TI-P681-12 CMGT Issue 2
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CRU 200 and 500 Series Condensate Recovery Units (VSD pumps)
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