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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-210-100-09 Rev 1.6          

16 

|

 

P a g e

                                                                                   

Preventative Maintenance 
 

 

Air conditioners require regular cleaning of the condenser air inlet filter. Wash filter often if washable 
using proper cleaning compound and back flushing the dirt out, or replace if not washable whenever it 
appears physically dirty. Restriction to the flow of air over the condenser coil will degrade the 
performance of the equipment, cause it to overheat, reduce cooling and can damage the compressor. 
The overload switch in the compressor may cause the compressor to cycle if the condensing coil 
pressure becomes too high due to air restriction. A further safety feature is the refrigerant high 
pressure cut off switch which will stop the compressor if the condensing pressure becomes too high 
due restricted condenser air flow or some other cause.  

 

Restricted air flow due to neglecting a dirty filter will cause unit to repeatedly turn off and then turn 
back on after it cools off. 

An operation in this safety cycling mode will eventually damage the equipment and 

void the warranty. 

 

Refer to Field Serviceable Parts section in this manual for details on parts that can be changed to help 
increase the uninterruptable life of the Air Conditioner.

 

 

 

Air Filter Service 
 
Remove the air conditioner filter and wash if washable or replace if not washable. Dry thoroughly 
before replacing. DELTA-T Air Filter Treatment Spray in aerosol cans or spray bottle is recommended 
to enhance air filter efficiency. Replacement filters are readily available from ISC Customer Service. 
DO NOT operate the air conditioner without the air filter. Such operation will allow the condenser coil 
to become dirty and loose efficiency, causing overheating and diminished cooling capacity. Dirty 
condensing coils must be back-flush cleaned using proper commercial coil cleaning compounds and 
thorough back-flush rinsing. Refer to directions on the cleaning compounds selected. Acid wash is not 
recommended as it reduces the life of the coil. 

 

 

 

Note:

 Do not use solvents to clean the programmable thermostat. Wipe with mild soap and water. 

 

Condenser and Evaporator Fans 
 
DELTA-T air conditioners use high efficiency, long life, sealed ball bearing fans engineered for 
optimum performance that require no maintenance.  Keep fan blades clean for optimal performance.  
Fans are removable and attached by plug in connections. 
 
Compressor 
 
ISC uses hermetically factory sealed compressors that are quiet, low vibration and are maintenance 
free.   Thermal overload devices are installed to protect the compressor from damage due to overheat 
and short cycle faults.  If the compressor thermal overload fails, it is recommended to return the unit to 
ISC customer service for proper replacement.  Note that the rotary compressor runs with compressed 
refrigerant gas on the outer case and therefore is hot to the touch. 
 
Loss of Refrigerant 
 
DELTA-T air conditioners are meticulously leak and run tested after assembly.  If a leak in the system 
should develop due to shipping damage or mechanical vibration, the leak must be detected, repaired 
and the refrigerant charge restored to the system by a qualified refrigeration professional. 
 

Содержание RZ-01A Series

Страница 1: ...User Technical Manual RZ 01A RZ 01V Series Rev 1 6 ...

Страница 2: ...ation Statement of Confidentiality The Manual and other materials contain proprietary information comprising ISC Inc s 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 business without ISC Inc s written approval ISC In...

Страница 3: ...Conditioner 4 Moving 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 Mat...

Страница 4: ...e 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 insure that there is no visual or hidden damage Upon receipt of the equipment insure that it is always top side up as indicated by THIS SIDE UP labels This insures that the compressor ...

Страница 5: ... rotary compressors without damaging the compressor If air conditioner is to be shipped or transported at any time pack in original packaging and strap to pallet to prevent damage Air conditioner must be kept upright at all times Air conditioners are not designed to be shipped attached to an equipment enclosure Air conditioners shipped which have internal damage due to shipping while attached to e...

Страница 6: ...osphere In the event of excess water vapor where the enclosure door has been left open there is an overflow hole on the bottom of every unit Please contact ISC Inc if you encounter excess water coming from your air conditioner Preliminary Testing Before mounting the air conditioner to the enclosure test for proper operation Follow the steps below prior to installation WARNINGS The air conditioner ...

Страница 7: ...t where the cold air can circulate across the width of the enclosure to cool it all the way across Once proper mounting placement is determined turn the enclosure equipment off if possible to prevent damage Drill and cut the holes as indicated on the mounting template Install insulation gasket as required to insure an air tight closed loop seal Be cautious not to let any cutting debris fall into t...

Страница 8: ... F Unit Weight 57lbs 120 230VAC Model Operating Voltage Range Volts Inrush Current Start Up Current Amps Loading Current Running Current Amps SCCR Short Circuit Current Rating Amps Recommended Fuse Selection Amps KVA Rating K Watts Refrigerant Type Refrigerant Amount ounces Low High Unit Pressures psi RZ 01A 126 110 120 22 69 3 44 2 12 Amp Class CC CCMR Time Delay 0 5 R134a 12 00 88 178 RZ 01A 236...

Страница 9: ...ing K Watts Refrigerant Type Refrigerant Amount ounces Low High Unit Pressures psi RZ 01V 126 110 120 22 69 3 89 2 12 Amp Class CC CCMR Time Delay 0 5 R134a 12 00 88 178 RZ 01V 236 220 240 13 77 2 67 2 7 Amp Class CC CCMR Time Delay 0 6 R134a 12 00 88 290 Time delay Fuses with the following electrical characteristics are recommended Fast acting fuses are not recommended of Ampere Rating Opening Ti...

Страница 10: ...act is programmed with an individual dry contact set point to monitor the enclosure temperature limit that you require When the enclosure temperature has exceeded the maximum limit the Form C gold plated contact will activate to notify you that there is a problem in achieving your cooling set point Default Settings 105 F Dry Contact High Temperature Alarm Set Point 2 F Recovery Differential 3min T...

Страница 11: ...hanging these parameters Special Programming All DELTA T Air Conditioners have a Special Programming option for selecting unique pre in programmed settings for special requirements Although most parameters are accessible in our digital controller this option allows you to receive a unit preset to your requirements without the need to manually configure the unit Refer to Advanced Digital Temperatur...

Страница 12: ...ns will be provided with this option For full details refer to the Ethernet IP Option Specifications included with the Air Conditioner Outdoor Option When having our Programmable Digital Controller on the face of our Air Conditioner does not fit your application ISC offers the OD Package i e Outdoor Option This option moves the controller into your enclosure using a 10 cable along with a universal...

Страница 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 ...

Страница 14: ...o 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 f...

Страница 15: ... 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 noP Invalid Probe Selected Low Evaporator Coil No Output Display Only 2Note When both Heater and Dry Contact options are included Dry Contact Alarm Contact ...

Страница 16: ...ay bottle is recommended to enhance air filter efficiency Replacement filters are readily available from ISC Customer Service DO NOT operate the air conditioner without the air filter Such operation will allow the condenser coil to become dirty and loose efficiency causing overheating and diminished cooling capacity Dirty condensing coils must be back flush cleaned using proper commercial coil cle...

Страница 17: ...on Value TXV 32025 1 Compressor 31500 1 for 120VAC 31506 1 for 230VAC Gasket Installation Kit 71300 N115 Evaporator Fan 41004 1 1 for 120VAC 41004 2 1 for 230VAC Condenser Fan NE010 41005 1 1 for 120VAC 41005 2 1 for 230VAC NE015 41025 1 1 for 120VAC 41025 2 1 for 230VAC Filter Media 44008 1 Available in packs of 12 Part 44200 Safety Information Unit is carefully designed to restrict access to mov...

Страница 18: ...on 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 YE...

Страница 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...

Страница 20: ...controller CA YES NO Check Low Pressure Switch Connections and Verify Pressure switch is closed Use meter 3 P1 or P2 NO YES Check probe connections potential faulty probe LA LA2 HA HA2 YES Refer to Alarm Signals in Digital Temperature Controller Programming Section Fuse Circuit Protection Nuisance Trip Is fuse opening as soon as unit turns on NO YES Check incoming power supply and connections for ...

Страница 21: ...Dimensions 120 230 VAC Models 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 ...

Страница 22: ...4421 Tradition Trail Plano Texas 75093 972 964 2700 800 836 7472 URL www iscenclosurecooling com Email iscinfo iscsales com SP ENG 210 100 09 Rev 1 6 22 P a g e THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Страница 23: ...es com SP ENG 210 100 09 Rev 1 6 23 P a g e Electrical Schematics System Schematic Digital Controller Schematic Note Schematics applies 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 ...

Страница 24: ...placement 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 environmental conditions without the proper filtration sealing pro...

Страница 25: ...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...

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