Motak PKM0335, Руководство по обслуживанию

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Part Number: 000016427 Rev 00 08/2020 107
Specifications
High Pressure Cutout (HPCO) Control
Function
Stops the ice machine if subjected to excessive high-side pressure.
The HPCO control is normally closed, and opens on a rise in discharge pressure.
Specifications
Cut-out: 600 psig ±10 / 4137 kPa ±10
Cut-in: 450 psig ±10 / 3103 kPa ±10
(Must be below 450 psig / 3103 kPa to reset).
Check Procedure
1. Move toggle switch to OFF.
2. Connect manifold gauge.
3. Hook voltmeter in parallel across the HPCO, leaving wires attached.
4. On water-cooled models, close the water service valve to the water condenser inlet.
On self-contained air-cooled models, disconnect the fan motor.
5. Move toggle switch to ON.
6. No water or air flowing through the condenser will cause the HPCO control to open
because of excessive pressure. Watch the pressure gauge and record the cut-out
pressure.
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Warning
If discharge pressure exceeds 600 psig - 4137 kPa and the HPCO control does not cut
out, cycle the toggle switch Off to stop ice machine operation.
Replace the HPCO control if it:
• Will not reset (below 450 psig - 3103 kPa)
• Does not open at the specified cut-out point