Idex Hale Sam, Руководство по эксплуатации, установке и обслуживанию

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The mode buttons are described in paragraph 6.3.4.2.1, Using PSI Mode, page 101 and
6.3.4.2.2, Using RPM Mode, page 102.
The PSI set point icon group (Figure 35) consists of an increase (+) button, a decrease (–) button,
with a digital readout of the engines RPM in the center. The engines RPM digital readout also
serves as an alternative target area (drop zone) for the preset PSI buttons.
The PSI preset button area (see Figure 32, page 30) supports up to two preset buttons.
Figure 35. PSI Set Point Icon Group Components
The pump capacity (Figure 36) is only displayed when pumping from hydrant (pressurized water
source selected) and a flow rate of 600 GPM or more than is available.
Figure 36. Pump Capacity Icon Group
4.3.1.1.2 Low Intake Pressure Control Mode
Intake mode (hereafter called low intake pressure control mode, see Figure 37) is a sub mode of
PSI Mode specially designed to deal with low pressure at intake(s) when SAM is in Auto Mode
pumping from hydrant (pressurized water source selected) and the selected intakes pressure
falls below the pressure required to maintain discharge pressure. SAM alerts the operator of the
condition and enables low intake pressure control mode in an attempt to protect the water
source (hydrant pipes, supply houses, etc.) from being exposed to a vacuum and the pump from
cavitation.