Waterous Eclipse ES, Руководство по установке

Страница: 13 / 37

F-1031, Section 3028 Page 13 of 37
Wye-strainer Installed with Cleanout Valve and Drain Line
Wye-strainer with Ball Valve
from IL3008
Wye-Strainer for Oil Cooler Water Line
A Wye-strainer is provided to strain water before it enters the cooler's water
inlet. The Wye-strainer requires regular inspection and should be in an easily
accessible location for inspection, removal and cleaning.
Connecting the Cooler Water Lines and Wye-strainer
The cooler water is supplied by diverting water through a fitting (OEM sup-
plied) from the discharge side of the fire pump (see the
Compressor - Oil &
Water Schematic, Page 8 ). The cooling water supply hose should be 1/2" I.D.
to supply the proper flow for cooling the system. The cooler discharge water
may be routed to the booster tank fill tower or returned to the inlet side of the
pump, as per the end user's preference.
Normally, cooling water is returned to the booster tank and a check valve is
installed in-line to prevent backflow from the tank through the cooler. During
drafting and hydrant-supplied operations, the booster tank may overflow be-
cause of the cooler water return. If this is objectionable, route the return line to
the inlet side of the pump. In this case, it is not necessary to install an in-line
check valve, but it will be necessary for the pump operator to open the tank fill
valve during operation to prevent overheating the fire pump and compressor.
CAUTION
Waterous is not responsible for damage due to plugged strainers. If the
customer's water system contains excessive debris or the vehicle relies on
drafting for its water supply, it may be necessary to install a larger strainer.
Without good water flow through the heat exchanger, the compressor will
overheat. Compressor performance will be inadequate and it may fail com-
pletely.
Omitting the Wye-strainer or removing the screen from the Wye does not
improve water flow. It will allow debris into the cooler, which can clog the
tine heat exchanger tubes and restrict water flow.
NOTICE