Grundfos CHV 2 Series, Installation And Operating Instructions Manual

Page: 6 / 16

6
Original installation and operating instructions.
CONTENTS
Page
1. General data 6
1.1 Applications 6
1.2 Operating conditions 6
1.3 Technical data 6
1.4 Sound pressure level 6
2. Installation 7
2.1 Pump location 7
2.2 Position of terminal box 7
2.3 Pipework 8
3. Electrical connections 9
3.1 Checking of direction of rotation 9
4. Starting 9
4.1 Priming 9
4.2 Frequency of starts and stops 9
5. Operation and maintenance 10
5.1 Frost protection 10
6. Fault finding chart 10
7. Disposal 10
1. General data
1.1 Applications
The CHV range of Grundfos vertical multistage
centrifugal pumps are designed for the pumping of
water and other thin, non-aggressive and non-
explosive liquids, not containing solid particles or
fibres.
Typical applications:
• Liquid transfer:
Transfer and circulation of liquids within light
industry and farming.
• Pressure boosting:
Incorporation in single- and multipump booster
systems.
• Domestic water supply.
• Cooling systems.
• Air-conditioning systems.
1.2 Operating conditions
1.2.1 Liquid temperature
0°C to +90°C.
1.2.2 Ambient temperature
Up to +55°C.
1.2.3 Maximum operating pressure
0°C to +40°C: Up to 10 bar.
+41°C to +90°C: Up to 6 bar.
1.2.4 Maximum inlet pressure
The actual inlet pressure plus the pressure when
the pump is operating against a closed valve should
always be lower than the "maximum operating
pressure".
1.2.5 Minimum inlet pressure
The table below applies to the maximum flow rates
of the pumps and a barometric pressure of
760 mmHg.
The values stated are the minimum inlet pressures/
maximum suction lifts "H" [m head] at the pump
suction port. The values are stated at different liquid
temperatures. The head loss in the suction pipe
should therefore be taken into account.
The maximum suction lift may be limited by the
actual head.
"H" = minimum inlet pressure during operation.
"H" marked * = maximum suction lift during
operation.
1 m head
≈
0.1 bar.
1.3 Technical data
1.3.1 Electrical data
See pump nameplate.
1.3.2 Dimensions
See page 131.
1.4 Sound pressure level
The sound pressure level of the pump is lower than
the limiting values stated in the EC Council Directive
2006/42/EC relating to machinery.
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
The use of this product requires
experience with and knowledge of the
product.
Persons with reduced physical, sensory or
mental capabilities must not use this
product, unless they are under supervision
or have been instructed in the use of the
product by a person responsible for their
safety.
Children must not use or play with this
product.
Type
H [m head]
20°C 40°C 55°C 90°C
CHV 2 *4.1 *3.6 *2.7 2.8
CHV 4 *7.3 *6.8 *5.9 *0.4