P470 Electronic Pressure Control with Display Product/Technical Bulletin 11
• The LED is On. Increase cut-in setpoint above
the displayed pressure by the minimum
differential pressure (for the selected operating
pressure range) plus 10 psi. Then increase the
cutout setpoint above displayed pressure by
5 psi. The LED should go Off (and the N.O.
contacts open).
If the LED does not respond as indicated above,
replace the control.
Figure 15: LED Status for Open-low Controls
IMPORTANT: The P470 control is not repairable.
Do not attempt to repair the control if it is defective
or functioning improperly. Contact a
Johnson Controls/PENN sales representative to
order a new control. See Ordering Information
.
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