Bleed-Off Valve; Pump (When Supplied) - EVAPCO ATC-E Operation And Maintenance Instruction

Operation and Maintenance Instructions
For the ESWA, wide orifice water diffusers are supplied. When inspecting and cleaning the water distribution system, always check
that the orientation of the water diffusers is correct as shown in Figures 14 and 15. For EvapJet nozzles, make sure that the top
edge of the "EVAPCO" logo is parallel to the top of the water distribution pipe.
THREADED END CAP
Figure 14 – Proper Water Diffuser Orientation (2A Nozzles)
ESWA Models (Except 14ʼ Wide Models)
THREADED END CAP
Figure 15 – Proper Water Diffuser Orientation (EvapJet)
ESWA 14ʼ Wide Models

Bleed-Off Valve

The bleed-off valve, whether factory or field installed, must be checked weekly to make sure it is functioning and set properly. Keep
the bleed-off valve wide open unless it has been determined that it can be set partially open without causing scaling or corrosion.

Pump (When Supplied)

The pump and pump motor should be lubricated and serviced in accordance with the pump manufacturerʼs instructions as supplied
with the unit. The recirculation pump should not be used as a means of capacity control, used with a VFD or be cycled frequently.
Excessive cycling can lead to scale build-up, and reduce wet and dry performance. On 14' wide ESWA's, which are supplied with
two pumps per cell, both pumps should be energized at the same time. One pump should not be on while the other pump is off.
Note: for the eco-ATWE, please consult the Sage 2 and Sage 3 manual.
The pump motor fan and impeller should be turned by hand if the pump assembly sits idle.
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