Tecumseh CD454532EGH-S Installation Instructions Manual Download Page 17

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Inspect refrigerant charge in the in the system for any leakages by measuring suction & liquid 
line pressures.

Check and make sure that the condenser surface is clean and free of dirt and debris.

Check all refrigeration piping. Make sure that all mechanical joints and flare nuts are tight.

Always re-assemble the enclosure panels when maintenance job is completed. Never
leave loose or not properly tightened panels.

ATTENTION!

Make sure all screws are re-tightened before start-up 
Make sure all wires are connected as per wiring diagram

TROUBLE SHOOTING

Basic troubleshooting tips for compressor are provided in the appendix. For more more help,
please contact application engineering or Tecumseh sales representative.

The unit should be inspected before unpacking for signs of damage or loss and packing list 
should be checked against material received to ensure shipment is complete. A report should be 
compiled and a claim must be filed with the freight carrier if shipping damage is discovered.

If damages to the packing are obvious but no visible damage on the unit or the parts are noted 
then a report should be compiled and a claim for “probable hidden damages” should   be filed 
with the transportation carrier. The manufacturer is not responsible for damages or loss caused 
by the transportation carrier.

NOTE:

  Tecumseh reserves the right to change any information in this publication at any time.

This  document  is  not  intended  to  replace  the  training  required  for  professional  service 
personnel, replace other information available from refrigeration and air conditioning equipment
manufacturers. This trouble-shooting chart is not designed to replace the training required for a
professional refrigeration service person, nor is it comprehensive. As a trained professional, for 
your safety and others always be aware of the following issues:

Terminal venting and electrocution

Properties of refrigerant and other chemicals involved

Proper compressor removal methods

Proper system flushing, purging and leak testing methods

Proper system evacuation method

Proper system charging methods

Start capacitor overheating issues

Summary of Contents for CD454532EGH-S

Page 1: ...Outdoor Condensing Units www Tecumseh com INSTALLATION INSTRUCTION MANUAL...

Page 2: ...E TESTING FOR LEAKS 12 13 SYSTEM EVACUATION AND SYSTEM CHARGING 14 15 APPROVED HERMETIC COMPRESSOR OILS SYSTEM START UP PROCEDURE 15 16 OPERATIONAL CHECKOUT PROCEDURE MAINTENANCE ODCU AND TROUBLE SHOO...

Page 3: ...H S XX XX E 38 5 4 3 ODCU NOMENCLATURE ODCU EXPLODED VIEW ODCU PARTS LIST CONDENSER COIL RIGHT PANEL ELECL COVER LIFT HANDLE FRONT PANEL FAN GRILL FAN MOTER WITH BLADER RECEIVER COMPRESSOR FILTER DRIE...

Page 4: ...2 53 1 670 607 300 520 1 2 53 1 1 670 607 300 520 5 8 53 670 607 300 520 5 8 53 A B C D DIMENSIONS ARE IN MM DIMENSIONS MINIMUM WALL CLEARANCES SUGGESTED FOR INSTALLATION UNIT MODEL CDUS4524EGE S CDU4...

Page 5: ...538EGF S CDU4542EXG FB CDU4542EXG S LIQUID LINE FLARE NUT TYPE UPTO VERTICAL MOUNTING PITCH E DIAGRAM 2 2 975 810 400 675 395 5 8 3 8 68 2 975 810 400 675 395 5 8 3 8 75 2 975 810 400 675 395 5 8 3 8...

Page 6: ...the units in such a way that the airflow direction through the unit faces to prevailing wind direction for the area The units should be mounted securely on adequate rigid and leveled bases to avoid i...

Page 7: ...MOUNTING Make a concrete platform to the mounting dimension of M8 anchor bolt 4 Nos with M8 Plain washers Base surface should be leveled properly for mounting pitch dimensions refer drawing No 1 2 on...

Page 8: ...18 8 0 65 2 6 900x360x805 1059x500x875 68 CDU Model Compressor Model Power Supply Cooling Capacity btu hr Nominal Current a Power Input w Max Refrigerant Chargable HP Pr Switch Cut In cut Out Bar LP...

Page 9: ...ontrol all these units as per the application requirement That is solenoid valve for the liquid line Applicable for fully built models only Room thermostat is the scope of customer and installed by th...

Page 10: ...DCU STANDARD 1 PHASE MODEL Legend COMP Compressor RU Potential relay F MOT Fan Motor CCH Crankcase Heater HP SW High Pressure Switch LP SW Low Pressure Switch LLSV Liquid Line Solenoid Valve E L N 1 2...

Page 11: ...nside the tubes it is recommended to flow dry nitrogen through the tubing during the brazing operations Alight flow of about CFM is sufficient Assurance of adequate velocity thus ensuring oil return c...

Page 12: ...100 free of leaks Use of electronic leak detection equipment is highly recommended due to its potential accuracy when used correctly in accordance with the manufacturer s instructions If trace amount...

Page 13: ...g the system always use a pressure regulating valve on the nitrogen cylinder discharge The pressure regulator must be able to reduce the pressure down to 1 to 2 psig and maintain this pressure The reg...

Page 14: ...ure related problems SYSTEM CHARGING Failure to properly charge the system can result in serious injury or death from explosion or fire Follow these precautions when charging a system Do not operate t...

Page 15: ...an motor mounting screws fan blade tightening screw shroud electrical boxes etc Check that the safety and pressure controls are connected and set correctly Check that the suction and liquid Service va...

Page 16: ...ed refrigerant charge and correct any probable malfunction observed Always re assemble the enclosure panels when operational check out procedure is completed Never leave loose or not properly tightene...

Page 17: ...r if shipping damage is discovered If damages to the packing are obvious but no visible damage on the unit or the parts are noted then a report should be compiled and a claim for probable hidden damag...

Page 18: ...d or fuse open or removed Compressor motor winding open or short Wiring improper or loose Compressor motor has a ground fault also known as short circuit to ground B COMPRESSOR NOT STARTING HUMS BUT T...

Page 19: ...ut out due to Liquid line solenoid leaking Undercharge of refrigerant Restriction in expansion device REFRIGERATION ACCESSORIES INSTRUCTIONS FOR THE FILTER DRIER SOLDER TYPE Low voltage to compressor...

Page 20: ...20 IINSTRUCTIONS FOR THE SIGHT GLASS SOLDER TYPE...

Page 21: ...21 INSTRUCTIONS FOR THE SOLENOID VALVE SOLDERING TYPE...

Page 22: ...22...

Page 23: ...hile transportation If require additional wooden board to be nailed CONTACT INFORMATION Please write us back with your valuable Feedback to our sales representative The information in this booklet are...

Page 24: ...Mumbai 400705 Ph No 022 65176929 Old No 37 New No 6 Arcot Road VADAPALANI Chennai 600 026 Supra CFA 23652244 23652300 4 2 1A Rustomjee Street Kolkata 700019 Ph No 033 24606026 Fax No 033 24606027 Gala...

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