Handling And Storing The Product; Lifting The Product; Product Introduction; Applications - Grundfos CM-L Montage- Und Betriebsanleitung

5. Handling and storing the product

5.1 Lifting the product

CAUTION
Crushing of feet
Minor or moderate personal injury
- Use safety shoes when handling the
pump.
Observe local regulations setting limits for
manual lifting or handling.
Install the eye bolts supplied with the pump and
attach correct lifting equipment to these when lifting
the pump. See fig. 9.
Fig. 9 Correct lifting of the pump
Do not lift the pump head by the control
box.

6. Product introduction

The pumps are horizontal, multistage centrifugal
pumps with canned rotor.
The pumps are available with stainless steel
hydraulics as standard. Cast-iron hydraulics are
available as an option.
Terminal box modules
CM-L pumps are fitted with a standard module in the
terminal box.

6.1 Applications

CM-L pumps are designed for applications where
leakage cannot be accepted, such as:
Delicate temperature control
• Cooling of equipment in server rooms
• cooling of medical and laboratory equipment
• cooling of industrial equipment like laser welders
and injection moulding tools.
Temperature control units where maintenance is
inconvenient
• Cooling of solar panels in remote areas
• cooling of wind turbines.

6.2 Pumped liquids

The pumps are suitable for pumping clean, thin,
non-aggressive and non-explosive liquids, not
containing solid particles, fibres or mineral oil.
If the pump is installed in a heating system, the water
must meet the requirements of accepted standards
on water quality in heating systems, for example the
German standard VDI 2035.
In domestic hot-water systems, we recommend that
you use the pumps only for water with a degree of
hardness lower than approx. 14 °dH. For water with
a higher degree of hardness, we recommend a
direct-coupled TP pump.
Liquid temperature, see section
WARNING
Flammable material
Death or serious personal injury
- Do not use the pump for flammable
liquids, such as diesel oil and petrol.

6.3 Glycol

The pumps can be used for pumping water-glycol
mixtures up to 50 %.
The maximum viscosity of a 50 % glycol mixture at
-10 °C is approx. 32 cSt.
When pumping glycol mixtures, the pump
performance will be reduced.
Consult Grundfos Product Center on
www.grundfos.com for further details.
To prevent the glycol mixture from degrading, avoid
temperatures exceeding the rated liquid temperature
and minimise the operating time at high
temperatures.
It is important to clean and flush the system before
adding the glycol mixture.
To prevent corrosion or precipitation, check that the
glycol mixture is as specified by the glycol supplier
and maintain it regularly. If further dilution of the
supplied glycol is required, follow the glycol
supplier's instructions.
®
DEX-COOL glycol may damage the
pump.
10. Technical data.
9