Types of EMS Controllers
COM-TROL 4K
DANFOSS CONTROLLER
This is a com-trol controller. It is an old system, but still widely used in grocery store rack systems.
http://icemeister.net/files/controllers/Comtrol/4000-HKY.pdf
This is a Danfoss system and is very user friendly. Fairly popular to use as well.
ALTECH
RMCC CPC
This was popular to use back in its day. It had a plug in that allowed ease of navigation through it. It has very slow data rate, is old, and hard to get parts for. It is still somewhat in use today.
This is an older CPC controller. It is an old system still on some grocery store racks. It also had case controllers with it.
https://climate.emerson.com/documents/026-1102-rmcc-io-manual-en-4845272.pdf
CPC RO BOARD
CPC AI BOARD
RO Board means Relay output board what that means is this board will control items such as compressors,EPRs, defrost and so forth. Notice how there are fuses inline with the RO point.If on the EMS system shows “ON” it means the compressor is being on to start, now if the compressor id not running checkthis fuse by first removing it and ohming it out if its good then start checking other things like I mention in the “COMPRESSOR” section.
AI means Analog input, on this board is where the sensors for various cases,walk in boxes are read.
E2 ENSTEIN
This controller is by far the most widely used controller in grocery stores. This is due to its many features, ease of operation, ease in navigation and high memory.
https://climate.emerson.com/documents/026-1610-e2-standard-rx-bx-cx-manual-en-4845026.pdf
COM-TROL 4K
This is a com-trol controller. It is an old system, but still widely used in grocery store rack systems.
http://icemeister.net/files/controllers/Comtrol/4000-HKY.pdf
DANFOSS CONTROLLER
This is a Danfoss system and is very user friendly. Fairly popular to use as well.
ALTECH
This was popular to use back in its day. It had a plug in that allowed ease of navigation through it. It has very slow data rate, is old, and hard to get parts for. It is still somewhat in use today.
RMCC CPC
This is an older CPC controller. It is an old system still on some grocery store racks. It also had case controllers with it.
https://climate.emerson.com/documents/026-1102-rmcc-io-manual-en-4845272.pdf
E2 ENSTEIN
This controller is by far the most widely used controller in grocery stores. This is due to its many features, ease of operation, ease in navigation and high memory.
https://climate.emerson.com/documents/026-1610-e2-standard-rx-bx-cx-manual-en-4845026.pdf
Emerging Technologies
ZOOM LOCK FITTINGS
INSTALLATION
These are used instead of brazing, much easier to use when joining long runs of pipe in a new construction phase. Only downside is not very easily used when having to make repairs to pipe inside of a case, so there are pros & Cons.
Fittings can be installed either by hand pressure or by using an electric crimper.
CO2 SYSTEMS
GLYCOL RACK
CO2 is really making huge strides as a refrigerant due to its non-ozone depleting properties, basically the compressors pump CO2 instead of the standard refrigerants that are being used, but it does have its own issues like high pressures, oil return issues, must use extra caution when working around this refrigerant. This pictorial shows how CO2 is circulated around to keep products cold/frozen.
On Glycol racks they are fairly simple in operation, the glycol is chilled at the rack via heat exchanger/subcooler and then is pumped down to medium temp cases to the sales floor.
GLYCOL CIRCULATION
So what happens here is glycol is chilled in the motor room, then pumped down stairs to the various cases. Generally should have a six degree differential between liquid in and out. NOTE: Only used on MEDIUM temp cases.
ZOOM LOCK FITTINGS
These are used instead of brazing, much easier to use when joining long runs of pipe in a new construction phase. Only downside is not very easily used when having to make repairs to pipe inside of a case, so there are pros & Cons.
INSTALLATION
Fittings can be installed either by hand pressure or by using an electric crimper.
CO2 SYSTEMS
CO2 is really making huge strides as a refrigerant due to its non-ozone depleting properties, basically the compressors pump CO2 instead of the standard refrigerants that are being used, but it does have its own issues like high pressures, oil return issues, must use extra caution when working around this refrigerant. This pictorial shows how CO2 is circulated around to keep products cold/frozen.
GLYCOL RACK
On Glycol racks they are fairly simple in operation, the glycol is chilled at the rack via heat exchanger/subcooler and then is pumped down to medium temp cases to the sales floor.
GLYCOL CIRCULATION
So what happens here is glycol is chilled in the motor room, then pumped down stairs to the various cases. Generally should have a six degree differential between liquid in and out. NOTE: Only used on MEDIUM temp cases.
Follow these steps on your journey to becoming a Journeyman!
