Delta-T CR-061 Series User'S & Technical Manual Download

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4421 Tradition Trail ● Plano, Texas 75093 ● 972-964-2700 ● 800-836-7472

URL:

www.iscenclosurecooling.com

● Email:

[email protected]

SP-ENG-211-000-17 Rev 1.3

P a g e

Troubleshooting Guide

The following guide provides a flow chart to identify a problem, determine the root cause and identify
the action needed to correct an issue.

Unit Will Not Run

Is Unit

Connected?

YES

Please Connect

Power

Verify Power On/Off

Switch is on position

OFF

Toggle Switch

then Retry

Verify input power

meets voltage

requirements as

shown in the UL label

YES

If problem is still present contact

technical support

Unit Overheats /
Insufficient Cooling

Is Filter

Clean?

Clean / Replace

Filter

YES

Are Condenser &

Evaporator Fans ON?

Check for Faulty

Fan & replace

YES

Is Condenser

Coil dirty?

YES

Clean Coil

Is Evaporator Coil

Frozen / Iced?

YES

Potential Bad

Evaporator Fan,

check for faulty

fan.

Contact Qualified Refrigeration Service

Technician to check Refrigerant Pressure. Unit

may have a refrigeration leak. If problem is not

resolved contact technical support.

Summary of Contents for CR-061 Series

Page 1: ...User Technical Manual CR 061 CR 081 Series Rev 1 3 ...

Page 2: ...late 1 3 02 02 18 B Slotnick Updated unit specifications Statement of Confidentiality The Manual and other materials contain proprietary information comprising ISC Sales trade secrets Please maintain the confidentiality of all proprietary information during and after the term of the use agreement Also please refrain from using this proprietary information in any other manner including in any other...

Page 3: ...ng the Air Conditioner 5 Unit Label 5 Operation 6 Preliminary Testing 6 Mounting the Air Conditioner 7 Unit Specifications 8 Options 10 System Faults 13 Digital Temperature Controller Programming 13 Preventative Maintenance 16 Field Serviceable Parts 17 Safety Information 17 Troubleshooting Guide 18 Physical Dimensions 21 Electrical Schematic 23 Warranty Information 24 Return Material Authorizatio...

Page 4: ... the Equipment Delta T air conditioning equipment is designed manufactured and packed to prevent damage from normal handling shock and vibration during shipment It is necessary to inspect your equipment upon receipt to ensure that there is no visual or hidden damage Upon receipt of the equipment ensure that it is always top side up as indicated by THIS SIDE UP labels This ensures that the compress...

Page 5: ...emplate below and keep this information in a safe place for warranty and ordering parts To prevent damage to equipment electrical panel and wiring and to prevent personal injury assure that the power source is compatible with the equipment before operating When recharging refrigeration type and amount must be the same as shown on the unit label or air conditioner will not operate properly or may b...

Page 6: ...er is the proper voltage and phase Check the electric power source for proper ground wire and neutral wire installation per 2008 NEC Assure that the electric power is protected by a circuit protection device refer to the Unit Specification section in this manual for proper circuit protection sizing Place the air conditioner on blocks or onto the cut out enclosure roof to allow air to flow through ...

Page 7: ...t onto the enclosure by inserting the tapered alignment pins on the bottom of the air conditioner into the matching holes in the enclosure roof Be careful not to damage the gasket on the bottom of the air conditioner by trapping tools or objects between the air conditioner and the enclosure From inside the enclosure install the provided fasteners into the threaded holes in the bottom of the air co...

Page 8: ...ded Fuse Selection Amps KVA Rating Refrigerant Type Refrigerant Amount ounces Low High Unit Pressures psi CR 061 126 110 120 35 7 10 6 2 20 Amp Class CC CCMR Time Delay 1 3 R438a 24 120 320 CR 061 236 220 240 22 7 6 0 2 10 Amp Class CC CCMR Time Delay 1 4 R438a 24 230 344 CR 061 486 440 480 11 35 2 9 2 5 Amp Class CC CCMR Time Delay 1 4 R438a 24 188 335 HACR Type Circuit Breakers or Time delay Fus...

Page 9: ...s are not recommended of Ampere Rating Opening Time 110 15min Minimum 125 1hr Maximum 200 12sec Minimum 4min Maximum 2 SCCR rating is based on the SCCR rating for the circuit protection device installed in the panel enclosure per UL50 UL508a to protect the AC unit Typically 100KA 200KA for Time Delay Fuses Options The CR 061 CR 081 Series Air Conditioners may be ordered with the following options ...

Page 10: ...te C Level Protection is strongly recommended for 4X applications requiring 316 stainless steel Low Ambient This option consists of circuitry to protect the compressor in a low ambient temperature environment The low ambient package is designed to provide an optimum constant low current in the compressor motor during the non cooling state This option provides internal heat to the compressor to pro...

Page 11: ...ailable Heater capacities range from 100 Watts to 950 Watts Default Settings 55 F Heat Set Point 3 F Differential At the default settings the heater output turns on at 52 F and operates until the temperature has reached 55 F Refer to Advanced Digital Temperature Controller Programming section on this manual for details on changing these parameters Special Programming All Delta T Air Conditioners h...

Page 12: ...the Ethernet IP protocol You can monitor and control all settings from a remote location with an applicable Allen Bradley Rockwell PLC A DIN rail is required inside the electrical enclosure for mounting the communication components Full specifications will be provided with this option For full details refer to the Ethernet IP Option Specifications included with the Air Conditioner Remote Controlle...

Page 13: ...e delay A thermal overload protects the compressor against faults In the event that the snowflake status LED is not flashing on the display and the compressor is not running an internal fault may have occurred on the unit Refer to the Troubleshooting Guide in this manual Digital Temperature Controller Programming For the end user this section will provide all the necessary information to view and ...

Page 14: ...display its value 4 Use the UP or DOWN arrow key to change its value 5 Press SET to store the new value and move to the following parameter To exit Press SET UP arrow keys or wait 15 seconds without pressing a key Note The set value is stored even when the procedure is exited by waiting for the time out to expire HOW TO LOCK THE KEYPAD 1 Press and hold the UP and DOWN arrow keys simultaneously for...

Page 15: ... for 3 minutes after initial 30 min start up delay No Output 2 HA2 Condenser High Temperature Alarm P2 145 F for 3 minutes Compressor Off 2 LA2 Condenser Low Temperature Alarm P2 50 F for 3 minutes No Output 2 CA Evaporator Coil Alarm Low Pressure for 2 minutes Compressor Off 2 2Note When both Heater and Dry Contact options are included Dry Contact Alarm Contact Relay is activated ALARM RECOVERY I...

Page 16: ...the uninterruptable life of the Air Conditioner Air Filter Service If the air conditioner is equipped with an optional condenser filter remove the filter and wash if washable or replace if not washable Dry thoroughly before replacing ISC Air Filter Treatment Spray in aerosol cans or spray bottle is recommended to enhance air filter efficiency Replacement filters are readily available from ISC Cust...

Page 17: ...pressor Thermal Overload CR 061 31552 2 for 120VAC 31574 2 for 230VAC 480VAC CR 081 31020 2 for 120VAC 31080 2 for 230VAC 480VAC Gasket Installation Kit 71318 TM68 Evaporator Fan 42100 1 1 for 120VAC 42100 2 1 for 230VAC 480VAC Condenser Fan 41037 1 1 120VAC 41037 2 1 for 230VAC 480VAC Filter Media Optional 44218 12 pack Capacitor CR 061 54004 1 for 120VAC 54010 1 for 230VAC 480VAC CR 081 54004 1 ...

Page 18: ... position ON OFF Toggle Switch then Retry Verify input power meets voltage requirements as shown in the UL label YES If problem is still present contact technical support Unit Overheats Insufficient Cooling Is Filter Clean NO Clean Replace Filter YES Are Condenser Evaporator Fans ON NO Check for Faulty Fan replace YES Is Condenser Coil dirty YES Clean Coil NO NO Is Evaporator Coil Frozen Iced YES ...

Page 19: ...Use meter 3 Check for faulty evaporator fan 3 Measure Temperature at Evaporator Verify Heat Load Requirements Is unit capacity adequate for internal head load Possible low refrigerant Is compressor thermal overload open Use ohm meter 3 Check for error code CA LA HA LA2 HA2 P1 or P2 YES NO Check contactor circuit Does it have power 3 NO YES Refer to Alarm Signals in Digital Temperature Controller P...

Page 20: ...soon as unit turns on NO YES Check incoming power supply and connections for potential short circuit Does fuse open when compressor starts YES NO Check electrical specification Verify proper recommended fuse has been selected Check compressor if excess heat present compressor may be faulty Contact Technical Support Flashing Error Codes Single or Multiple Codes 2 1 Refer to Alarm Signals in Digital...

Page 21: ... Physical Dimensions Water overflow excessive Check drain is it plugged YES NO Clean condensate pan and drain add 1 tbsp bleach to upper pan monthly to kill mold Is Air Conditioner sealed against enclosure properly tightly sealed and door closed YES Contact Customer Service NO Ensure air tight seal between air conditioner and enclosure Make sure door is closed ...

Page 22: ...les com SP ENG 211 000 17 Rev 1 3 22 P a g e Electrical Schematics System Schematic Digital Controller Schematic Note Schematics apply to all voltages optional accessories wiring not provided in this document If you require electrical schematic with options contact our technical support and provide your model number ...

Page 23: ...n are furnished ISC assumes no liability beyond the repair or replacement of its own product This Warranty does not cover Labor or reimbursement of labor for evaluation removal installation repair or cost of any warranted part except at the ISC factory in Dallas Texas Use of equipment for other than its designed purpose or operating conditions Operation in harsh oily corrosive or other abnormal en...

Page 24: ...and address Shipping method Pack unit in a suitable packing for shipment preferably the original packaging if available If suitable packing is not available arrange for packaging to be shipped to you Air Conditioners must be returned in an upright position properly secured to a pallet Tip unit to empty water from the evaporator and boil off pans Clearly mark the RMA number on the box Customer will...

Page 25: ...ly channels facing UP 4 Starting from the left connect the wires by inserting them into the lower receptacles located on the front of connector in the following order NOTE If using stranded wires it may be difficult to insert into the receptacles without releasing the spring tension as described below in the removal instructions The wires can be tinned or pin terminals as shown above or pin ferrul...

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