Low Pressure Cutout (Lpco) Control - Manitowoc QuietQube Indigo Series Technician's Handbook

LOW PRESSURE CUTOUT (LPCO) CONTROL

FUNCTION
Signals the control board to energize and de-energize
the contactor when suction pressure rises above or
falls below setpoint.
The LPCO control is closed at pressures above
setpoint and opens at pressures below setpoint.
Cut-Out
12 psig ±3
CHECK PROCEDURE
1. Navigate to LPCO input on display
• Press the Menu button.
• Scroll down to Service and press right arrow.
• Scroll down to Diagnostics and press right arrow
• Scroll down to Inputs and press right arrow to
display LPCO reading
2. LPCO display indicates
A. Open = Replace Switch
B. Closed = Switch OK
3. Connect manifold gauges and verify refrigerant
pressure exceeds LPCO cut-in. If pressure
exceeds cut-in and the contacts are open, replace
the LPCO.
Part Number STH026 8/12
Specifications
Cut-In
35 psig ±5
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