#Carel smart key instructions manual#
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#Carel smart key instructions software#
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This loop navigates the user through the digital and analogue inputs and outputs Not used on Motivair chillers Opens first screen of I/O loop. Language selection, hour usage for pumps and compressors, as well as the alarm log, and the status of probes and compressors.

#Carel smart key instructions software#

Navigating the maintenance loop allows access to software info. LEDs Color Description For 15 Button Control Board ON/OFF Button Green On – Unit on Flashing – Unit off from supervisor or digital input ALARM button Red On – One or more alarm conditions have occurred ENTER button Yellow On – Instrument correctly powered ON/OFF switches the unit on/off ALARM displays the alarms, mutes the buzzer and deletes the active alarms UP ARROW if the cursor is in the home position (top left corner), scrolls up the screens in the same group if the cursor is in a setting field, increases the value DOWN ARROW if the cursor is in the home position (top left corner), scrolls down the screens in the same group if the cursor is in a setting field, decreases the value ENTER used to move the cursor from the home position (top left corner) to the setting fields, in the setting fields confirms the set value and moves to the next parameter Takes the user to the main screen which displays the temperature of the fluid entering and leaving the unit as well as the status of the machine. Resetting Compressor/Pump Maintenance AlarmĨ5 Woodridge Drive Amherst, New York 14228 Tel.

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This integration takes all the errors out of trying to control a built-up system and provides the maximum available free cooling at any and all ambient temperatures that make free cooling efficient. The advantage to this chiller system is that the integration of the free cooling, the mechanical cooling, and the single control system that operates both in one unit. The compressors will stay locked out until the ambient rises to a point where free cooling cannot be maintained. The condenser/free-cooling fans VFD will modulate on the outlet temperature to maintain set point within 1.8*F.

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55*F – 29*F = 26*F) the mechanical cooling is locked off as the chillers full tonnage capacity is available by design at this ambient temperature. After another 90 seconds if outlet temp is still outside the 1.8*F (dead-band) the second compressor will start and load up to 50% and so on until the outlet temperature is = to or 29*F below the IWT (i.e. After 90 more sec if the outlet temp is >1.8*F the compressor will stage up to 100%. If the outlet temperature rises over 1.8*F and the 90 sec staging timer has expired the compressor will stage up to 75%. MLCFC Sequence of Operation Mechanical cooling – outlet control On a call for cooling set point = 45*F glycol pump running flow switch closed the first stage compressor starts and runs at 25% loaded for 30 second then stages up to 50% at this point the control reads the outlet temperature if the temperature is within 1.8*F of set point the compressor holds at the present stage. THE REQUIRED REFERENCES ARE TO PRESERVE ANY WARRANTY STATUS. WARNING: RECOMMENDATIONS AND REQUIREMENTS ARE STATED THROUGHOUT THIS MANUAL.

#Carel smart key instructions manual#

WARNING: THIS MANUAL COVERS ONLY THE CHILLER MODELS MANUFACTURED PRIOR TO THE REVISION DATE – CONTACT MOTIVAIR FOR THE LATEST REVISION. ALL TECHNICIANS WHO HANDLE REFRIGERANTS MUST BE CERTIFIED. THE FEDERAL CLEAN AIR ACT (SECTION 608), ARI, ACCA, EPA, OSHA, AND ANY LOCAL GOVERNING ORGANIZATION THAT HAS JURISDICTION MUST BE FOLLOWED. WARNING: INDUSTRY STANDARDS FOR REFRIGERATION SERVICE AND REFRIGERANT HANDLING PRACTICES AS PRESCRIBED BY.

NO ATTEMPT IS MADE IN THIS MANUAL TO BE A COMPLETE OR EDUCATIONAL TEXT. WARNING: THE PROCEDURES OUTLINED IN THIS MANUAL ARE SPECIFIC TO THE CHILLER MODELS LISTED. WARNING: THIS MANUAL IS A REFERENCE FOR QUALIFIED CHILLER REFRIGERATION TECHNICIANS ONLY. A COPY OF THE O & M MANUAL IS AVAILABLE AT WARNING: THIS MANUAL IS A SUPPLEMENT TO THE O & M MANUAL - ALL WARNINGS, INSTRUCTIONS, AND SAFETY PROCEDURES LISTED IN THE O & M MUST BE STRICTLY FOLLOWED. Electronic Expansion Valve Module (EEV) Information 9. 85 Woodridge Drive Amherst, NY 14228 Phone 71 Fax 71 Rev.102111RJġ.