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maintenance
Distribution System Maintenance:
To keep your MD cooling tower operating at peak performance, it may be
necessary to clear the spray system of debris or sediment. To access the spray
system, remove the drift eliminators as explained in the previous section. Ob-
serve the spray system with full flow on the unit. Each nozzle should produce
a cone pattern spray which overlaps the adjacent nozzle patterns—see image.
Debris buildup in the nozzles, if left unchecked, may result in elevated
pressure levels in the tower’s water distribution system. Spray
pressures exceeding 8.0 psi may damage the distribution system.
If a nozzle appears clogged or is not producing a cone pattern, remove the
nozzle and clean all surfaces. To remove the nozzle, pull down sharply on
the plastic component, leaving the rubber grommet seated in the PVC pipe.
Inspect the nozzle for cleanliness or broken
pieces. Each nozzle should have a turbula-
tor inside the outer shell—see image. If the
nozzle appears broken or damaged, consult
your Marley representative for replacement
parts. Insert the nozzles by pressing it back
into place inside the rubber grommet. It may
be necessary to wet the nozzle and grommet
to facilitate assembly.
Nozzles used with low-clog fill are attached
with a threaded connection for ease of re-
moval and cleaning. These nozzles have no
internal parts.
Caution
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