Bleed-Off Valve; Pump (When Supplied) - EVAPCO ESW Series Operation And Maintenance Instruction

For the ESWA/4, wide orifice water diffusers are supplied, shown in figure 19. When inspecting and cleaning the water distribution system,
always check that the orientation of the water diffusers is correct as shown in Figures 17 and 18. 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 17 – Proper Water Diffuser Orientation (2A Nozzles)
ESWA Models
Figure 18 – Proper Water Diffuser Orientation (EvapJet)
ESW4 Models
Figure 19 – Gravity Fed Distribution Pan
ESW4 Models Only
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. Additional
information can be found under "Water Treatment and Water Chemistry".

Pump (When Supplied)

The pump and pump motor should be lubricated and serviced in accordance with the pump manufacturer's 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 18' long ESW4's 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.
The pump motor shaft and impeller should be turned by hand if the pump assembly sits idle (for a month or more).
Disconnect the power and lockout/tagout the pump disconnect. Remove the pump motor fan guard and rotate the pump fan/shaft
several turns by hand. Reassemble the fan guard and return to service.
NOTE: For the eco-ATWE, please consult the Sage 2 and Sage 3 manual.
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