www.conairgroup.com USER GUIDE UGH031-0209 EarthSmart TM ECM Series, 0.50 to 0.75 ton models Corporate Office: 724-584-5500 l Instant Access 24/7 (Parts and Service): 800.458.1960 l Parts and Service: 814.437.
Please record your equipment’s model and serial number(s) and the date you received it in the spaces provided. It’s a good idea to record the model and serial number(s) of your equipment and the date you received it in the User Guide. Our service department uses this information, along with the manual number, to provide help for the specific equipment you installed. Please keep this User Guide and all manuals, engineering prints and parts lists together for documentation of your equipment.
Ta b l e o f C o n t e n t s 1-1 I n t r o d u c t i o n Purpose of the user guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 How the guide is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Your responsibilities as a user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 ATTENTION: Read this so no one gets hurt . . . . . . . . . . . . . . . . . . . 1-4 2-1 D e s c r i p t i o n What is the EarthSmart ECM Series Chiller?. . . . . . . . . . . .
Stopping the chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Changing temperature units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Chiller operation sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Resetting the high pressure switch of the compressor . . . . . . . . . . 4-8 5-1 M a i n t e n a n c e Preventative maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Checking electrical connections . . . .
B Appendix Safety adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 C Appendix Water quality control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 D Appendix Chiller capacity and derate chart . . . . . . . . . . . . . . . . . . . . . . . . . . D-1 E Appendix Pressure-temperature chart for R-134A refrigerant . . . . . . . . . . . . . E-1 F Appendix RTD resistance chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i v l Ta b l e o f C o n t e n t s
SECTION 1 Purpose of the user guide . . . . . . . . . . . . . . 1-2 How the guide is organized . . . . . . . . . . . . . 1-2 Yo u r r e s p o n s i b i l i t i e s a s a u s e r . . . . . . . . . . . 1 - 3 AT T E N T I O N : R e a d t h i s s o n o o n e g e t s h u r t . . .
Purpose of the User Guide This User Guide describes the EarthSmart ECM Series Chiller and explains step-by-step how to install, operate, maintain and repair this equipment. Before installing this product, please take a few moments to read the User Guide and review the diagrams and safety information in the instruction packet. You also should review manuals covering associated equipment in your system. This review won’t take long, and it could save you valuable installation and operating time later.
Yo u r R e s p o n s i b i l i t y a s a U s e r • Thorough review of this User Guide, paying particular attention to hazard warnings, appendices and related diagrams. • Thorough review of the equipment itself, with careful attention to voltage sources, intended use and warning labels. • Thorough review of instruction manuals for associated equipment. • Step-by-step adherence to instructions outlined in this User Guide.
AT T E N T I O N : Read this so no one gets hurt We design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by following the procedures outlined below and elsewhere in the User Guide. WA R N I N G : I m p r o p e r i n s t a l l a t i o n , o p e r a t i o n o r servicing may result in equipment damage or p e r s o n a l i n j u r y.
AT T E N T I O N : Read this so no one gets hurt (continued) Always protect yourself from hot surfaces when working on the chiller, especially when working on or around the compressor and condenser. These devices can be over 160°F {71°C}. Allow these devices to cool before performing any maintenance or troubleshooting. WARNING: Refrigerant hazard Only certified refrigerant technicians should examine and correct problems involving the refrigerant circuit.
1-6 l Introduction
SECTION 2 What is the EarthSmart ECM Series Chiller? . . 2-2 Ty p i c a l a p p l i c a t i o n s . . . . . . . . . . . . . . . . . . 2 - 2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . 2-3 How it works: Process circulation . . . . . . . . 2-4 Refrigeration circulation . . . . . 2-5 Component listing . . . . . . . . . 2-6 Specifications: EarthSmart ECM Series Chillers . . . . . . . . . . . . . . . . . . 2-8 Pump curve: EarthSmart ECM Series Chillers . . . . . . . . . . . . . . . . . .
✐ What is the EarthSmart ECM Series Chiller? NOTE: Chiller’s environment and cooling temperatures below the default cooling The Conair EarthSmart ECM Series Chillers provide self-contained sources of chilled water and are available with compressor ranges of 0.5 Hp or 0.75 Hp (nominal capacities of 0.41 tons or 0.70 tons of refrigeration). ranges will affect cooling capacities. IMPORTANT: Nominal chilling capacities are based on 95°F {35°C} ambient air conditions and processing 50°F {10°C} leaving water.
Limitations Conair EarthSmart ECM Series Chillers are chosen based on the cooling load, ambient temperature and cooling temperature. ● Ambient temperature - The chiller’s air-cooled condenser requires an ambient air temperature between 40° to 95°F {4.4° to 35°C} for efficient operation. Operation above 95°F {35°C} may result in elevated condensing pressures and will eventually cause the chiller to shut down due to a high pressure safety switch.
H o w i t Wo r k s : P r o c e s s C i r c u l a t i o n (Left-side as viewed from the control) 1 3 2 1 Hot fluid from the process enters the chiller through the “From Process” inlet into the chiller’s reservoir. 2 Pump moves fluid from the reservoir through evaporator where it is chilled. 3 Fluid is chilled in the evaporator and exits through the “To Process” outlet, returning to the process.
H o w i t Wo r k s : R e f r i g e r a n t C i r c u l a t i o n (Left-side as viewed from the control) (Right-side as viewed from the control) From Process inlet Pump To Process outlet 1 4 Drain/Fill 1 The evaporator extracts heat from the process fluid, causing the refrigerant to vaporize (evaporate) into a gas. 2 Vaporized refrigerant travels to the compressor, where the low-pressure vapor is compressed into a high-pressure, high-temperature vapor.
H o w i t Wo r k s : C o m p o n e n t L i s t i n g Water system • Motor/Pump assembly - The motor/pump assembly circulates chilled coolant through the process loop. The pump assembly is built with brass to maintain water quality. Refrigeration system • Compressor - Hermetic compressor takes low-pressure, low-temperature refrigerant gas and compresses the gas into high-pressure, high-temperature vapor.
H o w i t Wo r k s : C o m p o n e n t L i s t i n g (continued) • Evaporator - The evaporator is a brazed plate heat exchanger where the liquid refrigerant is allowed to evaporate (boil off) to absorb the heat (BTU) from the process fluid. As the heat is absorbed, the process fluid is chilled. NOTE: The fan cycling switch is adjustable when the chiller is in an environment cooler than 95°F {35°C}. See Appendix J entitled, Plumbing Schematic.
S p e c i f i c a t i o n s : E a r t h S m a r t TM E C M Series Chillers MODEL Performance characteristics Capacity* tons Compressor Hp {kW}✝ B Pump Hp {kW} Chilled water flow‡ gpm {lpm} Chilled water pressure‡ psi {bar} A Reservoir capacity gal {liters} Dimensions inches {mm} A - Height B - Width C - Depth Process connections inches {mm} Process (to and from) Weight lb {kg}§ Installed Shipping Voltages full load amps** 115V/1 phase/60Hz 220V/1 phase/60Hz Refrigerant ECM-0.5 ECM-0.75 0.41 0.5 {0.
P u m p C u r v e : E a r t h S m a r t TM E C M Series Chillers 140 0.65 130 0.60 120 0.55 0.50 100 GPH 100 0.45 90 0.40 80 0.35 70 0.30 60 0.25 50 0.20 40 0.15 30 0.10 20 0.05 10 0.00 25 25 50 75 100 125 150 175 200 225 Horsepower Flow Rate (GPH at 1725 RPM) 110 250 Outlet Pressure* (PSI) Horsepower Flow rate SPECIFICATION NOTES * Pump curves do not reflect pressure drops due to internal piping.
2-10 l Description
SECTION 3 Installation Unpacking the boxes . . . . . . . . . . . . . . . . . 3-2 Wa r n i n g s a n d c a u t i o n s . . . . . . . . . . . . . . . . 3 - 3 Making process plumbing connections . . . . . 3-5 Fi l l i n g t h e c h i l l e r . . . . . . . . . . . . . . . . . . . 3 - 6 Drain connection . . . . . . . . . . . . . . . . . . . . 3-7 Checking the refrigerant charge . . . . . . . . . 3-8 Connecting the main power . . . . . . . . . . . . .
Unpacking the Boxes The EarthSmart ECM Series Chiller comes fully assembled in a single crate. Units are shipped with the casters attached. CAUTION: Lifting Conair EarthSmart ECM Series Chillers are designed to easily roll on casters. If, for some reason you need to lift the chiller, take all precautions to avoid personal injury or damage to the chiller. Lift the chiller using a forklift or hoist with straps that have been positioned at the chiller’s center of gravity.
Wa r n i n g s a n d C a u t i o n s WARNING: Improper installation, operation, or servicing may result in equipment damage or p e r s o n a l i n j u r y. This equipment should only be installed, adjusted and serviced by a qualified technician who is familiar with the construction, operation and potential hazards of this type of machine. All wiring, disconnects and fuses should be installed by a qualified electrical technician in accordance with electrical codes in your region.
Preparing for Installation Plan the location for the chiller and prepare the area properly. Position the chiller as close to the process machine as possible. Place the chiller in position near the process machine so that coolant lines can be connected from the process machine to the chiller and back.
Making Process Plumbing Connections ✐ control depends on the method All process piping materials (such as hoses, rigid piping, valves or filters) used with process water piping circuitry must be rated for 100°F {37.8°C} minimum temperature and 150 PSI {10.3 bar} minimum pressure. All such materials must have the equivalent or larger diameter of the particular process connection that the length of process water piping is connected to.
Filling the Chiller The chiller is shipped without coolant. The chiller is manually filled during installation using water as its coolant. For atypical process temperatures below 45°F {7.2°C}, use the table below to determine the percentage (by volume) of glycol needed for the process temperature that is required. Mix the proper percentage of glycol with water. IMPORTANT: The chiller’s control does not monitor the percentage mixture of glycol.
Drain Connection To drain the chiller for storage or transport: 1 Rotate the chiller’s drain valve counterclockwise. If using chemicals or additives with your process coolant, observe local disposal laws and regulations. From Process inlet Water level gauge To Process outlet 2 Close the chiller’s drain valve by turning it clockwise once final evacuation of all process coolant is complete. IMPORTANT: Drainage procedures must be done prior to shipment or outdoor storage of the unit.
Checking the Refrigerant Charge WARNING: Refrigerant hazard Only certified refrigerant technicians should examine and correct problems involving the refrigerant circuit. CAUTION: Always disconnect and lock out the main power sources before making electrical connections. Electrical connections should be made only by a qualified electrical technician. All chillers are fully charged with R-134A refrigerant from Conair.
C o n n e c t i n g t h e M a i n Po w e r The Conair EarthSmart ECM Chiller uses standard 115 Volt, 60 Hz or 220 Volt, 60Hz single-phase power, depending on model. To connect the the main power to the chiller: 1 Connect the chiller’s plug into a properly-sized and rated electrical outlet. IMPORTANT: Depending on the state of the refrigeration system the compressor may turn on momentarily upon connecting power.
3-10 l Installation
SECTION 4 Operation EarthSmart ECM Series Chiller: Control descriptions . . . . . . . . . . . . . . . 4-2 Stopping the chiller . . . . . . . . . . . . . . . . . . 4-4 Changing temperature units . . . . . . . . . . . . 4-5 Chiller operation sequence . . . . . . . . . . . . . 4-6 Resetting the high pressure switch of the compressor . . . . . . . . . . . . . . . . 4-8 Operation l 4-1 4 Operation Starting the chiller . . . . . . . . . . . . . . . . . .
EarthSmart ECM Chiller: Control Descriptions Return Button Pressing the “Return” button will scroll through the chiller’s menu screens. Actual Chiller Te m p e r a t u r e Hot-Gas Bypass Status Shows the (process) actual temperature value. Indicates the status of the Hot-Gas Bypass valve. Alarm Indication Indicates the alarm status. (High Temperature Alarm only.) O n / O f f To g g l e Switch Used to turn the power to the chiller on or off.
Infinity Button Pressing the “Infinity” button will acknowledge alarms and return the user to the Main screen. Starting the Chiller To start the chiller: 1 Toggle the power switch to the On or “I” position. The control display will illuminate. Facing the chiller’s control, the “To Process” actual temperature will be on the left, the setpoint temperature is on the right. See Operation section entitled, Chiller Sequence of Operation. 2 Set the cooling temperature setpoint.
Stopping the Chiller To stop the chiller: 1 Toggle the power switch to the Off or “O” position. SD 1 2 % Off Position IMPORTANT: Do NOT rapidly cycle the chiller’s power on and off (short cycle). Once the power has been turned off, wait at least three (3) minutes before cycling the chiller’s power back on.
C h a n g i n g Te m p e r a t u r e U n i t To stop the chiller: 1 Press the green “Return” button once to access the Temperature Units Selection screen. Press the ▲ or ▼ buttons to toggle between fahrenheit and celsius temperature units. ✐ NOTE: The temperature display will not indicate Fahrenheit or Celsius temperature units. The chiller’s control is set for Fahrenheit temperature units as standard from Conair. SD 1 2 % Return Button to lock in the selection and return to the Main screen.
Chiller Operation Sequence The EarthSmart ECM Series Chiller has a unique user interface that controls the process temperature and prevents refrigeration migration during compressor off times. When the main power is connected: 1 Depending on the state of the refrigeration system, the compressor may turn on momentarily upon connecting power. The compressor will stop when the refrigerant is pumped into the condenser and a low pressure condition exists in the evaporator.
Chiller Operation Sequence (continued) 5 The condenser fan can energize anytime the toggle switch is in the “On” or “I” position. The fan is controlled by the fan cycling (high refrigeration) pressure switch. This switch maintains the high side refrigeration pressure under cooler ambient temperatures and lower loads. The fan will turn on when the high refrigeration pressure reaches 200 PSI {13.8 bar}. It will turn off when the pressure drops below 125 PSI {8.6 bar}.
Resetting the High Pressure Switch of the Compressor CAUTION: The compressor can start immediately when the High Pressure “Reset” button is pressed. The high refrigeration safety pressure switch shuts off the compressor immediately when the high refrigeration pressure reaches 230 PSI {15.9 bar} without going through pump down during a low pressure cycle. If the high pressure switch trips, it must be manually reset by pressing the “Reset” button on the switch.
SECTION 5 Maintenance Preventative maintenance schedule . . . . . . . 5-2 Checking electrical connections . . . . . . . . . . 5-4 Cleaning the brazed plate adapter . . . . . . . . 5-5 C l e a n i n g t h e a i r- c o o l e d c o n d e n s e r . . . . . . . . 5 - 7 Checking the reservoir level . . . . . . . . . . . . 5-9 Cleaning the pump strainer . . . . . . . . . . . . 5-10 Checking the refrigerant charge Maintenance l 5-1 5 Maintenance and quality . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance Schedule Daily, or as often as needed ❒ Checking process fluid level in the pump tank Check the process fluid level in the water level gauge on the back of the chiller. If low, see Maintenance section entitled, Checking the Reservoir Level. ❒ Verifying pump discharge pressure While the pump is running, check to ensure that the pump pressure gauge (located on the front of the chiller) is within range.
Preventative Maintenance Schedule (continued) Monthly ❒ Checking electrical connections, amps and volts Check to ensure the electrical connections are properly seated and that the chiller is operating at its rated amps and voltage. See Description section entitled, Specifications: EarthSmart ECM Series Chillers. ❒ Cleaning Wipe all external surfaces to maintain performance. ❒ Inspecting condenser Check the air-cooled condenser for adequate air flow. Check the condenser face for dirt and clogging.
Checking Electrical Connections WARNING: Electrical Hazard Before performing any work on this item, disconnect and lock out electrical power sources to prevent injury from unexpected energization or startup. Be sure that power to the chiller is OFF when doing any maintenance on the chiller. Follow all safety rules when performing any maintenance on this equipment. ✐ NOTE: Always refer to the wiring diagrams you received with your chiller to locate specific electrical components.
C l e a n i n g t h e B r a z e d P l a t e E va p o r a t o r Minerals and other contaminants produce deposits, scales, slime or algae on the heat transfer surfaces exposed to water. Fouled surfaces could result in decreased cooling capacity. Implement a water treatment program to slow the fouling. CAUTION: Hot Surfaces Always protect yourself from hot surfaces when working on the chiller, especially when working on or around the compressor and condenser. These devices can reach over 160°F {71°C}.
C l e a n i n g t h e B r a z e d P l a t e E va p o r a t o r (continued) CAUTION: Hot Surfaces Always protect yourself from hot surfaces when working on the chiller, especially when working on or around the compressor and condenser. These devices can reach over 160°F {71°C}. Allow these devices to cool before performing any maintenance or troubleshooting. 5 Remove RTD from bottom of evaporator. 6 Connect 3/8-inch tubing to the 3/8-inch connections of the heat exchanger.
C l e a n i n g t h e A i r- C o o l e d C o n d e n s e r WARNING: Electrical Hazard Before performing any work on this item, disconnect and lock out electrical power sources to prevent injury from unexpected energization or startup. Be sure that power to the chiller is OFF when doing any maintenance on the chiller. Follow all safety rules when performing any maintenance on this equipment.
C l e a n i n g t h e A i r- C o o l e d C o n d e n s e r (continued) 7 Check the air filter. If the filter is blinded or torn, replace the filter. Replacement air filters are available from Conair. 8 Replace the chiller’s side panels and then the top lid by replacing the four (4) retaining bolts. Contact Conair Parts (800) 458 1960 From outside of the United States, call: (814) 437 6861 9 Reapply main power. CAUTION: Wear eye protection.
Checking Reservoir Level WARNING: Electrical Hazard Before performing any work on the chiller, disconnect and lock out electrical power sources to prevent injury from unexpected energization or startup. Be sure that power to the chiller is OFF when doing any maintenance on the chiller. Follow all safety rules when performing any maintenance on this equipment. Check the coolant level in the reservoir. The coolant level in the sight glass on the back of the chiller should be 7/8 full.
Cleaning the Pump Strainer EarthSmart Chillers use a rotary pump to flow process coolant through their internal piping and to the process. A strainer on the pump may periodically need cleaning, depending upon the quality of the process coolant. WARNING: Electrical Hazard Before performing any work on the chiller, disconnect and lock out electrical power sources to prevent injury from unexpected energization or startup. Be sure that power to the chiller is OFF when doing any maintenance on the chiller.
Cleaning the Pump Strainer (continued) 6 Remove the strainer from its housing. 7 Inspect the strainer for holes or blinding, clean or replace as necessary. 8 Re-install the strainer and strainer cap. Properly seal all piping with approved Teflon tape or pipe dope. IMPORTANT: Check to ensure the strainer is properly seated before applying the strainer cap. Crushing of the strainer can occur if it is not fully inserted back into the strainer housing. Replacement strainers are available from Conair.
Checking the Refrigerant Charge and Quality WARNING: Refrigerant Hazard Only certified refrigerant technicians should examine and correct problems involving the refrigerant circuit. CAUTION: Always disconnect and lock out the main power sources before making electrical connections. Electrical connections should be made only by a qualified electrical technician. All chillers are fully charged with R-134A refrigerant from Conair.
SECTION 6 Tr o u b l e s h o o t i n g Before beginning . . . . . . . . . . . . . . . . . . . . 6-2 A few words of caution . . . . . . . . . . . . . . 6-3 DIAGNOSTICS How to identify the cause of a problem . . . . 6-3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 Tr o u b l e s h o o t i n g . . . . . . . . . . . . . . . . . . . . 6 - 5 Checking or replacing the temperature sensor . . . . . . . . . . . . . . . 6-8 Checking or resetting the circuit breakers . . .
Before Beginning You can avoid most problems by following the recommended installation and maintenance procedures outlined in this User Guide. If you do have a problem, this section will help you determine what caused it and how to fix it. ❏ Diagnose causes from the control panel. 1 Note the alarm and press the “Infinity” the alarm and resume control if required. 2 Address the alarm message and fix the problem. See Troubleshooting section for descriptions of possible alarm conditions.
A Fe w Wo r d s o f C a u t i o n Improper corrective actions can lead to hazardous conditions and should never be attempted to sustain production. WARNING: Only a qualified electrical technician should examine and correct problems that require opening the chiller’s electrical enclosure or using electrical wires to diagnose the cause. WARNING: High voltage. Always stop the chiller, disconnect and lock out the main power source before troubleshooting or performing repairs. CAUTION: Hot surfaces.
Alarms If the red alarm LED is illuminated, an alarm is activated. The chiller has automatically pumped down because it has detected a serious problem that could damage your process or chiller. Note that the alarm must be acknowledged before the control will resume operation by pressing the “Infinity” button. Problem Possible cause Solution A2.hi (Alarm light illuminated) – If the “To Process” temperature exceeds the process high temperature deviation setpoint, it shuts down the chiller.
Tr o u b l e s h o o t i n g Solution The chiller will not start. (Control not illuminated) Tripped circuit breaker. Verify resistance to ground. Reset breaker. See Troubleshooting section entitled, Checking or Resetting the Circuit Breakers. Incorrect incoming voltage. Check incoming power source for correct voltage and amperage as detailed on the chiller nameplate. See Description section entitled, Specifications: EarthSmart ECM Series Chillers.
Tr o u b l e s h o o t i n g Problem Compressor will not start. ✐ NOTE: Also, see Troubleshooting section, entitled, Troubleshooting, “Chiller shuts down due to a High Pressure switch alarm” and “Chiller shuts down due to a Low Pressure switch”. (continued) Possible cause Solution High pressure switch has been tripped. Reset the High Pressure switch. See Operation section entitled, Resetting the High Pressure Switch. Circuit breaker has been tripped. Verify resistance to ground. Reset breaker.
Tr o u b l e s h o o t i n g (continued) Problem Possible cause Solution Chiller shuts down due to a High Pressure switch alarm. Low air flow across the condenser. Check for dirty condenser fins. Clean as necessary. See Maintenance section entitled, Cleaning the Air-cooled Condenser. Fan not operating. Reset High Pressure switch. See Operation section entitled, Resetting the High Pressure Safety Switch. High ambient temperature. Check for loose fan blade or open/grounded motor winding.
Checking or Replacing the Te m p e r a t u r e S e n s o r IMPORTANT: Always refer to the wiring diagrams that came with your chiller to locate specific electrical components. Illustrations in the User Guide are intended to be representative only. The EarthSmart ECM Series Chiller uses a RTD sensor to monitor the temperature of the process coolant. Typical location of the RTD at the chiller’s evaporator. To check or replace an RTD sensor: 1 Disconnect and/or lockout the main power supply.
Checking or Resetting the Circuit Breakers The EarthSmart ECM Series Chiller uses electrical circuit breaker to protect the chiller from overloads or improper operating conditions. IMPORTANT: Always refer to the wiring diagrams that came with your chiller to locate specific electrical components. Illustrations in the User Guide are intended to be representative only. Circuit Breakers To check or reset the chiller’s circuit breakers: 1 Disconnect and lockout the main power supply.
Additional manuals and prints for your Conair equipment may be ordered through the Customer Service or Parts Department for a nominal fee. Most manuals can be downloaded free of charge from the product section of the Conair website. www.conairgroup.com We ’ r e H e r e t o H e l p Conair has made the largest investment in customer support in the plastics industry. Our service experts are available to help with any problem you might have installing and operating your equipment.
Equipment Guarantee Conair guarantees the machinery and equipment on this order, for a period as defined in the quotation from date of shipment, against defects in material and workmanship under the normal use and service for which it was recommended (except for parts that are typically replaced after normal usage, such as filters, liner plates, etc.). Conair’s guarantee is limited to replacing, at our option, the part or parts determined by us to be defective after examination.
Safety Adjustments ✐ NOTE: For chiller operation below 45°F {7.2°C}, the chiller’s control must be configured properly. Contact Conair Service. IMPORTANT: A correct mixture of glycol and water must be used as process coolant for operation below To ensure safe and efficient operation at lower setpoints, adjustments of the low pressure switch from factory settings is required. The table below lists the appropriate settings.
Wa t e r Q u a l i t y C o n t r o l Insufficient or improper water treatment can damage the EarthSmart ECM Chiller. A certified water treatment specialist should be consulted for your particular application. It is the owner’s responsibility to prevent damage from foreign material or inadequate water treatment. The two main points to consider for water treatment in chillers are: • Corrosion • Organism growth Proper chemical treatment will control pH levels and algae growth.
Chiller Capacity and Derate Chart ✐ NOTE: For chiller operation below 45°F {7.2°C}, the chiller’s control must be Ambient conditions affect air-cooled chiller operation and capacity. Standard rating is at 95°F {35°C} entering air temperature. For ambient air conditions greater than 95°F {35°C}, chiller derating will occur. configured properly. Contact Conair Service. Standard chiller rating is 50°F {10°C} leaving water.
P r e s s u r e - Te m p e r a t u r e C h a r t f o r R-134A Refrigerant Refrigerant Pressure (PSIG) 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 170 180 190 200 210 220 230 Saturated Temperature -3°F {-19.4°C} 7°F {-13.9°C} 15°F {-9.4°C} 22°F {-5.5°C} 29°F {-1.6°C} 35°F {1.6°C} 40°F {4.4°C} 45°F {7.2°C} 50°F {10°C} 54°F {12.2°C} 58°F {14.4°C} 62°F {16.7°C} 66°F {18.9°C} 69°F {20.5°C} 73°F {22.7°C} 76°F {24.4°C} 79°F {26.1°C} 82°F {27.
RT D R e s i s t a n c e C h a r t You can use the following chart to determine if you need to replace your RTD.
Overhead Plumbing Details Overhead piping installations above process connections require installing a check valve in the “To Process” line and a 12 inch {305 mm} riser with a check valve and vacuum break in the “From Process” line to prevent siphoning when shutting down the chiller. Install a vent tube at 12 inches {305 mm} above the highest system point to prevent over pressurization. Maximum height of piping above process connections is 25 ft {7.6 m}.
H-1 l Appendix 8.00 1CAB 1PL 2PL 3PL 1SW 7.88 4PL 5PL 1TC 6PL 2CAB 7PL 1 4.04 2 1TB 1TC 1ENC 2ENC 2 2 2 3 4 6 7 7 8 9 10 9.
Control Setup 1/32 DIN Watlow SD controller Setup Sheet Enter the following parameters Menu Set Up Page up & down for 3 seconds Parameter Sen C-F S.dec IS.en SP.Lo SP.hi Ftr.e Flt.r Ot1 Ctr1 Ftb1 PL 1 PSL1 PSH1 nLF1 Ot2 hys2 Lgc2 Lat2 dSP2 ACLF Unit I.
PSL 1 FROM PROCESS TO PROCESS DESCRIPTION PSV SET AT 50 PSIG 1 2" 1 4" 1 4" VENT 3/8" 1 2" 25 PSIG ON FALL 35 PSIG ON RISE (1/4" gauge port) CUT OUT AT CUT IN AT 1/2" FILL/DRAIN (HOSE BIBB) 02 DEW REVISED 01 WDH PROTOTYPE REV BY J-1 l Appendix LEVEL 11/27/07 DEW 09/12/07 DEW APP DATE 3 8" ECN OD TUBE 10 GALLON WATER TANK BYPASS 3 8" 3 8" DXF FS 1 (1/4" schraeder valve) 3 8" 3 8" EVAPORATOR PSV SET AT 250 PSIG 3 8" 3/8" OD TUBE OD TUBE 1 4" 1 8" 1 4" FPT TE 1 3 8" TO
