Rinse Thermostat
Part Number
3020
Function
Controls the rinse heating elements and prevents operation of machine if the rinse
temperature is below that required.
Description
The rinse thermostat is a specially calibrated 3 pole capillary type temperature operated
device. The thermostat does not have a control knob and it is factory set to the
temperatures required by Hygiene Regulations. The first pole’s LTCO changeover contact
is set to operate at 83 ±3°C, the other two poles HTCO contacts are set to 90±3°C.
Switching capacity: 16(4) A 380 V.
Diagrams
LTCO – Low Temp Cut Out
HTCO – High Temp Cut Out
Replacement
Take note of the connections to the wiring loom before disconnecting. Remove the
capillary bulb from the rinse tank pocket. Select a new thermostat and carefully unwind
enough capillary to reach from the pocket to the thermostat mounting position. Carefully
position the tube with no kink or stress on the tube, also have due regard for the protection
of the tube against contact with live electrical terminals – secure or insulate as appropriate.
Adjustment
IMPORTANT
To make adjustments to the thermostat you will need a good quality thermometer
fitted with a “type K” thermo junction. The use of a stainless steel probe is not
permitted as slow response time in the device will cause inaccurate settings.
Insert the thermo junction into the rinse tank pocket for the machine’s temperature gauge.
Energize the elements and check all temperatures on temperature rise. Remove the grey
tape covering three adjusting screws and adjust LTCO and HTCO settings if required (one
or both HTCO poles are used depends on model – check which HTCO terminals are
wired before making adjustments). Clockwise rotation of the screws increases the setting,
anticlockwise – decreases it.
IMPORTANT
Do not break the seal or attempt to adjust the central MULTI POLE
ADJUSTING SCREW that is sealed with red compound.
!
!
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