Water spraying system

The water spraying system helps to even out the short loading peaks in the summer.

A unit with fans in one row has one water spray tubing. A unit with fans in two rows has two water spray tubings.

The delivery includes the loose tubing and assembly instructions.

Assemble the tubing in numerical order and at the place shown in Structure of water spraying system. Tighten the joints carefully and make sure that all nozzles are in the same direction. Turn the tubing so that the nozzle angle corresponds to the fan speed. Check the right nozzle angle from Nozzle angle and fan speed.

Lock the tubing in place. The water flow is 0.5 l/min for one nozzle, pressure 3 bar.

Figure: Water spraying system
Table 1. Nozzle angle and fan speed
Rpm α⁓
950 45
720 40
560 35
470 30
350 25
Figure: Structure of water spraying system
  1. Reduction joint
  2. Water nozzle
  3. T-connector
  4. Double nipple
  5. End tube
  6. Distance tube
  7. Plug and connector
  8. Clamp/drill screw
Caution: Limey water may block up the nozzles and it can also form an isolating layer on the surface of the heat transfer section.

A wrong pH value of water may damage the heat transfer section. The pH value varies between 7...8.

Caution: Freezing water may break the water tubing. Always drain the tubing after use by opening the end plug (no. 7).