Nessie
®
ist ein Warenzeichen von Danfoss A/S
521B0881 DKCFN.PI.020.F1.02
08-2006
INSTRUCTIONS
Installation and commissioning instructions
Nessie
Plug&Spray
TM
unit
18
0R
91
26
18
0R
91
26
Contents
1. Introduction .................................................................................................................................................................................................................................................... Page 1
2. General performance .................................................................................................................................................................................................................................. Page 1
3. General warranty issues ............................................................................................................................................................................................................................. Page 2
4. Identification .................................................................................................................................................................................................................................................. Page 2
5. Safety guidelines........................................................................................................................................................................................................................................... Page 2
6. System design ................................................................................................................................................................................................................................................ Page 2
7. Mechanical installation .............................................................................................................................................................................................................................. Page 3
8. Electrical connection ................................................................................................................................................................................................................................... Page 4
9. Water connection ......................................................................................................................................................................................................................................... Page 6
10. Commissioning .............................................................................................................................................................................................................................................. Page 7
11. Maintenance ................................................................................................................................................................................................................................................... Page 9
12. Trouble shooting ........................................................................................................................................................................................................................................... Page 9
13. Technical data ................................................................................................................................................................................................................................................ Page 10
14. Spare parts....................................................................................................................................................................................................................................................... Page 11
1. Introduction
Congratulations on your Danfoss Nessie Plug&Spray
TM
unit. To ensure
the best performance and service life of our product, please read this
instruction carefully and follow the recommendations how to integrate
the Plug&Spray
TM
unit into your system.
2. General performance
The Nessie high-pressure water products from Danfoss are designed
to operate on clean tap or potable water and technical water with
low conductivity (De-Mineralized, De-Ionized, Reverse Osmosis).
Danfoss defines clean tap water as water filtered to 10 µm absolute,
β value > than 5000. This means that the water is filtered to a level
where 99.995% of all particles larger than10 µm have been filtered out.
Since Nessie pumps are water lubricated and cooled, failing to meet
the water quality specification will reduce the expected service life
of the components and void the limited warranty. It should be noted
that systems with high-pressure atomization nozzles require a high
filtration degree of the water to ensure optimal performance of the
spray nozzles.
It is the responsibility of the end-user to provide sufficient feed water.
The system must be properly bled of air to prevent the pump from
cavitating and running dry. Improper bleeding will cause cavitation
and damage the pump (see chapter on commissioning).
Danfoss Nessie products are manufactured to operate properly at
water temperatures of 3°C to 50°C (37°F to 122°F). Operation outside
this area may cause damage to the system.
The Plug&Spray
TM
unit must be operated within the specifications
stated in this manual. Sustained operation of components above the
recommended limits will cause excessive wear and shorter service life.
