5.1 Sprinkler Pipe

The sprinkler pipe must be clean without blockage.  If there is some foreign material retarded in the pipe, take the following steps:

(A)    Loosen the set screw or lock nut on sprinkler device, then remove sprinkler pipe and clean.

(B)    Align the dot mark on sprinkler head and reinstall.

For T-28 – T-215 models, they are fitted with type A and B pipe (the hole pitch is different to assure even water distribution.

5.2 Sprinkler Head

The sprinkler head rotation will slow or even stop if scale is stuck to it.  In this case, check it as follows:

(A)    T-25 – T-260 (refer to Fig. 1)

a.      remove set screw cap on top of sprinkler head.

b.      loosen nut and washer, then take head off.

c.      clean it with fresh water and check if any component is worn out.

(B)    T-270 – T-3000 (refer to Fig. 2)

a.      remove the cap and take circlip off.

b.     pull the rotary part off the fixing part and check: replace if necessary.

5.3 Tower Casing

No coating is needed for the tower casing as it is made of F.R.P.  If it becomes soiled, wipe it with soap or a water-soaked piece of cloth and then wash it thoroughly with water.

5.4 Water Basin

As dust and dirt are liable to get into the water basin, open the drain at the bottom of the drop-in tank from time to time and wash it clean.  This applies also to the water basin in particular, as sediments are liable to accumulate near the outlet, so keep the tank clean so that the strainer mesh will not be clogged.

5.5 Filling

No special care is needed if the control of the quality of water is adequate during operation.

5.6 Fan

Watch the surface of the blades carefully to see that no damage develops and make sure that proper space is maintained between the internal wall of tower casing and the tip of blades.

5.7 Coating

It is desirable to periodically recoat the metal parts as they are subject to rusting.