-21-
Fig. 10 Water Regulating Valve
2)
Checking pressure control settings
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig It
is necessary to adjust the setting in the field to reach the correct cycle time.
Fig. 11 Adjustable Pressure Control
3)
A fan speed control may be used to adjust the air flow to achieve the
specified CFM. The fan will run from the minimum speed to full speed with
the control knob at the lowest and highest speed position. To adjust the
minimum speed, turn control knob to the lowest speed position, then rotate
the setting (located on the side or front) clockwise to decrease the minimum
speed or counter-clockwise to increase the minimum speed. The minimum
speed should be adjusted until it supplies the required CFM
