Owner`s manual

Owner’s Manual Quantum Energy Technologies
Document number: QDC0030PD-16.4 Page 22 of 36
Section 10: OPERATION & ADJUSTMENT OF THE DIGITAL CONTROLLER
Caution: Alteration of the Digital Controllers programming & settings without authorisation from
Quantum Energy Technologies will void your warranty. This section is provided ONLY for
qualified refrigeration technicians to assist in servicing, repairs or trouble shooting.
10a: The Buttons
Use In Conjunction With The Layout Diagram Fig:5 And Wiring Diagrams Fig: 6&7&8&10&11.
10a.1: SET BUTTON
a) To enter the settings node, press the SET button 3 times; the display will show H55, this is
the water temperature cut out set point. Pressing the UP or DOWN button will adjust the set
point from 10℃ to a maximum setting of 62℃ (factory setting 55℃).
b) Press & hold for 6 seconds to enter the de-icing mode. If display shows “OFF” press & hold
for another 6 seconds to exit this mode. (Note this may cause system malfunction so avoid
using).
c) Pressing the SET button (hold for 6 seconds) will perform a manual reset of the system if
required i.e. after a 105℃ Thermal Trip. Turning power off to the system, them back on will
also reset it.
10a.2: UP BUTTON
a) This key becomes operational after entering the settings mode above.
b) Press 3 times to display Axx (the compressor temperature). Push again to display bxx
(evaporator temperature) or again for Cxx (ambient temperature).
c) During the time delay start period, press & hold for 3 seconds to force a compressor start.
When the compressor is running, press & hold for 3 seconds to force a compressor
shutdown.
10a.3: DOWN BUTTON
a) This key becomes operational after entering the settings mode above.
b) Press & hold for 3 seconds to simultaneously open the de-ice valve and liquid injection
valve; the valves will close 10 seconds later.
c) When compressor is running, press 3 times to display the Amperage being drawn Cxx.
10b: Programming Menu
To restore the digital controllers factory settings, press the SET button and hold while turning the
power onto the system.
To exit any level press the SET button to cycle through all menu items until the controller returns
to the water temperature display once again.
10b.1: First Level: Press SET + UP for 6 Seconds
t10 Compressor start time delay; 1 to 30 min adjustable. Factory setting 10 min.
p10 Interval for compressor start after stop; 3 to 30 min adjustable. Factory setting 10 min.
d10 Interval for over heat auto-reset; 3 to 30 min adjustable. Factory setting 10 min.
E10 The max de-icing time; 5 to 30 min adjustable. Factory setting 10 min.
F45 The interval for de-icing; 10 to 99 min adjustable. Factory setting 45 min.
10b.2: Second Level: Press SET+DOWN for 6 Seconds
A65 Highest water temperature setting; 30 to 65℃ adjustable. Factory setting 65℃.