High Pressure Safety Switch; Float Valve With Flow Washer - Cornelius IAC322 Pocket Manual

Should adjustment be required, the valve has an adjustment stem on
the top of the valve. After allowing the cuber to operate for 10 min-
utes in the ice making mode to balance the system, turning the ad-
justing stem CW will increase the discharge water temperature,
and CCW will decrease the discharge water temperature.
The water regulating valve must close off condenser water flow
completely during the "hot gas" harvest cycle. There should be no
discharge water flowing out of the condenser during the harvest
cycle. Should the valve fail to close during the harvest mode, the
condenser will continue to condense the compressor discharge va-
por needed for the harvest cycle and this will result in long harvest
times.
Leaking (by–passing) water regulating valves are normally the re-
sult of scale build–up on the valve diaphragm and the valve should
be flushed, not replaced. To flush the valve, open the adjusting stem
wide open CCW (or force the valve spring up with a screwdriver),
open and close the water supply to the condenser resulting in the
flushing action. Should this not correct the problem replace the
valve diaphragm. This can be done without entering the sealed re-
frigeration system.
Damage to the water regulating valve may also be caused by water
hammer. Water hammer will result from the condenser inlet and out-
let water lines being reversed or defective valve stops in the water
supply line. Proper installation of water cooled equipment should al-
ways include an anti–water hammer standpipe in the supply inlet
line as close to the cuber as possible.

High Pressure Safety Switch

All water-cooled and remote products contain a high pressure safety
cut-out switch. The function of this switch is to shut down the cuber
should excessive pressure develop in the high side of the refrigera-
tion system. This switch will open the power supply at 450 PSI
(30.61 BAR) high side pressure. Should this control open, it must be
reset manually and the cause for the increase in pressure determined.

Float Valve with Flow Washer

The Float Valve Maintains the proper water level in the water reser-
voir.
There is a flow washer in the inlet side of the float assembly that will
control inlet water pressure from 20/120 PSI (1.37/8.16 Bars). This
will prevent float flutter. In low water pressure conditions, 20 PSI
(1.37 Bars) or less, the flow washer may have to be removed from
the float assembly for proper volume.
43 TD 204