Section Ill. PRINCIPLES OF OPERATION
1-12. PRINCIPLES OF OPERATION.
(2) Moving the handle of VALVE NO. 4 (2) to OPEN allows water to
flow from prime detergent tank (1) through the valve, to the eductor hose (3)
a. Pump Unit.
and the eductor (4) of the pump unit subassembly (5) and into the top of the
(1) The pump unit is equipped with a prime detergent tank (1) that
centrifugal pump (6). This keeps the impeller from being operated dry until the
must be filled with water to prime the pump before starting.
source water reaches the pump.