Video 051  What info is on the KE2 Evap’s Setpoints Page  (FAQ: on Walkin Coolers, Walk in Freezers)
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Video 051 What info is on the KE2 Evap’s Setpoints Page (FAQ: on Walkin Coolers, Walk in Freezers)


Hello my name is Ryan Kliethermes with KE2
Therm Solutions. In this video I want to show you some of the
information that’s available from the Setpoints Page of the KE2 Evaporator Efficiency controller. While this video will specifically show the
KE2 Evap webpage, all of our Ethernet enabled controllers, like the KE2 Evap for Rack Efficiency
and KE2 Controlled Environment provide similar ability to control and communicate. Ok, so you were on the Home Page, or one of
the other webpages and selected the Setpoints button, found on the bottom of the page. At the top of the Setpoints page the customer
information, as well as IP and Mac addresses, and the location description are displayed,
the same as we saw on the Home Page review. To make changes to any of the pages, you must
go to the Login button in the lower right corner, then enter your Login information, the default
for firmware versions after 3.0 are ke2admin and ke2admin. Then, click Submit in the lower right corner.
You will now be back on the Setpoints page and ready to make changes if needed. If you glance at the page, you will immediately
notice that three of the Setpoints are highlighted in yellow. These are the only three setpoints
that need to be entered for the controller to begin controlling. They are Room Temp,
Valve Type, and Defrost Type. Lets focus in on the upper, left of the page,
we see Refrigeration. Within this block are the Setpoints for control of the refrigeration
system, including Room Temp, Refrigerant type, Compressor Minimum Run and off time and other
temperature sensor inputs. There are several other setpoints that can be changed from the
typical default values as desired. Directly below is the Expansion Valve block,
and you see the second of the yellow highlighted setpoints. Under the Valve Type drop down, In addition
to the default Mechanical, you will find pre-configured options for electronic expansion valves including
KE2 Therm�s valves, as well as some for other manufacturers. The last item on the list for valve type is
Custom. If Custom is selected, you will need to provide the Motor Step Rate, Max Valve
Steps and Motor Type, which are found further down in the box. When using an electronic expansion valve the
superheat setpoint is defaulted to 8 degrees F and maximum operating pressure or MOP is
defaulted to 150 psig Okay, so now lets go back to the top, middle
portion of the page and look at the Defrost section. Under Defrost you see the third highlighted
setpoint. It is for the Defrost Type. Under the dropdown you have the options for
Electric, the controller�s default, Air Defrost, Hot Gas with the Compressor On, or
Hot Gas with the Compressor Off. The other setpoints in this section are typical
defaults based on the defrost type selected. These values can be changed as desired. The defrost mode dropdown has three choices
Demand, Scheduled or Run Time. For each of these there are additional setpoints that
help fine tune the defrost cycle. Alright, so now we�ll go back up to the
top right of the page and examine the Digital Inputs box.
There are three digital inputs, that can be configured for things such as a 2nd Temperature
Sensor, Door Switch, External Alarm, Light Switch, System Off and others. Below the Digital Inputs box is the Sensor
Offsets box. Sensor Offsets allow you to calibrate sensors
if needed The PID section allows for changing the response
time for EEV�s and should only be adjusted after consulting with KE2 Therm Below this is the Alarms block. This consists of Alarm Delays, and Alarm Offsets. Setting these can help prevent false alarms.
For instance the Hi Temp Alarm Offset is 10 degrees Fahrenheit, and the Hi Temp Alarm
Delay is 60 minutes. This prevents a high temp alarm from triggering
just because the walk in was stocked with relatively warm product and the temperature
in the walk in spiked. However, if after 60 minutes the 10 degree
offset is still exceeded, the alarm will sound. The last box on the page is the Manual Control
box. It allows you to force the system into the next system mode. So, if the system is in Refrigerate mode as
shown here, it will put the system into Defrost, if it was in Defrost mode it would push the
system into Drain mode After you have made any changes you will need
to go down to bottom of the page and select the Save button to finalize your changes. So, there you have a general overview of the
Setpoints page of the KE2 Evaporator Efficiency controller, and you can more fully appreciate
the way the pages can be used to make managing your refrigeration system more easily. I also encourage you to view our videos that
look at the KE2 Evap�s other webpages. For more information please visit our website
or contact our tech support line.

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