Description
Grundfos Unilift CC Submersible Drainage Pump - CC7-A1
Grundfos Product No.96280974
Overview
Unilift CC 5, and CC 7pumps are single-stage submersible pumps able to pump down to 3 mm water level. The pumps are designed for pumping rainwater and grey wastewater.
Applications for the Uplift CC
- washing machines, baths, sinks, etc. from low-lying parts of buildings up to sewer level
- cellars or buildings prone to flooding
- draining wells
- collecting wells for surface water with inlets from roof gutters, tunnels, etc.
- swimming pools, ponds or fountains
Versions
The CC pumps are suitable for permanent installation or they can be used as portable pumps.
They are available in two versions:
- M for manual operation
- A for automatic operation
Approvals
VDE, GOST and LGA according to DIN EN 12050-2
Pumped liquids
The pump is suitable for these liquids:
- clean, non-aggressive water
- slightly dirty (grey) wastewater.
The open-impeller design ensures free passage of solids up to ∅ 10.
The pumps are not suitable for these liquids:
- liquids containing long fibres
- inflammable liquids (oil, petrol, etc.)
- aggressive liquids
If the pump has been used for other liquids than clean water, it should be flushed through with clean water immediately after use.
Components included
The pump is supplied with an adapter and a non-return valve.
The adapter has 3/4", 1" and 1 1/4" external threads.
It must be cut to fit the discharge pipe.
The non-return valve can be fitted in the adapter to prevent backflow through the pump when it stops.
Pump sleeve and housing
The pump sleeve is made of composite material cast in one piece with a 1 1/4" external pipe thread (G) discharge connection. A slot on the handle holds the float switch cable.
The mains cable and float switch cable are introduced into the pump sleeve through hermetically sealed cable entries.
The suction strainer is fitted to the sleeve by giving it a light push, and it can be removed easily by means of a screwdriver or similar tool. The water enters the pump through the holes of the suction strainer preventing the passage of large solids. The large holes also ensure a slow flow into the pump. Suction to low water level is obtained by removing the strainer.
Motor
The motor is a single-phase, asynchronous, dry-rotor motor. The axial rotor position is secured by means of a ball bearing. The motor is cooled by the pumped liquid around the motor.The motor incorporates automatic overload protection cutting out the motor in case of overload. When cooled to normal temperature, the motor will restart automatically.
Selection
The overview below is suitable for the selection of the correct size of Unilift CC pumps used in stationary applications.
The flow velocity through the discharge pipe must be minimum 0.7 m/s to ensure self-cleaning.
Example: A DN 32 discharge pipe with an inner diameter of 26 to 34 mm (depending on local standards) requires a minimum flow velocity of approximately 2m3/h.
The overview below shows the maximum lengths of combined vertical and horizontal DN 32 discharge pipes.
What is Wastewater?
At plumbonline we thought we would define "what is wastewater" to remove the guess work, aiding to make the correct choice first time and on budget!
Drainage
- Raw water, drainage and untreated wastewater containing solids no larger than 12 mm from households, farms and small industry.
Effluent
- Dirty water and untreated wastewater (excluding toilet discharge), containing fibres and solids no larger than 50 mm from dewatering systems, domestic wastewater systems and small industry.
Sewage
- Untreated wastewater and raw sewage containing fibres, textiles and other solids, including toilet discharge from domestic sewage systems, farms and industry.To avoid clogging, pumps allowing free passage of solids up to 70-80 mm are recommended. Be aware that toilet discharge often contains foreign bodies such as nappies, tampons, toilet rolls, children’s toys and toothbrushes!
If you’re unsure be pump sure, Plumbonline has a committed team of pump specialists with over 20 years of pump selection experience.
