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Troubleshooting
Related Manuals for Tecumseh CDU4524EGF-S
Summary of Contents for Tecumseh CDU4524EGF-S
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Page 1: Installation Instruction
INSTALLATION INSTRUCTION MANUAL Outdoor Condensing Units www.Tecumseh.com... -
Page 2: Table Of Contents
TABLE OF CONTENT ODCU NOMENCLATURE, ODCU EXPLODED VIEW AND SCOPE OF SUPPLY DIMENSIONS OF THE UNIT AND INSTALLATION INSTRUCTIONS UNPACKING, LIFTING & HANDLING INSTRUCTIONS ODCU MOUNTING OPTIONS ODCU SERIAL/TECH SPEC. LABEL LOCATION ELECTRICALS AND WIRING DIAGRAMS 9-10 CONNECTIONS OF SUCTION & LIQUID LINE AND REFRIGERANT PIPING. PRESSURE CONTROLS (MINI PRESSURE SWITCHES) SYSTEM FLUSHING, PURGING, AND PRESSURE TESTING FOR LEAKS 12- 13... -
Page 3: Odcu Nomenclature, Odcu Exploded View And Scope Of Supply
ODCU NOMENCLATURE C D U CAPACITY APPLICATION OUTDOOR TYPE VOLTAGE FIRST TWO DIGITS IN 2 - LOW BACK CONDENSING UNIT CODES COOLING CAPACITY 4 - HIGH BACK XG, XC, GH,... 38000 BTU/HR @ 60 HZ S- SINGLE PHASE CAPACITY REFRIGERANT ACCESSORIES NO LETTER- THREE NO. -
Page 4: Dimensions Of The Unit And Installation Instructions
UPTO VERTICAL SUCTION LINE LIQUID LINE UNIT MODEL DIAGRAM LENGTH HEIGHT WIDTH MOUNTING MOUNTING WEIGHT FLARE NUT FLARE PITCH PITCH TYPE NUT TYPE "A" "B" "C" "D" "E” CDU4524EGF-S 1/2" 1/4" CDUS4524EGE-S 1/2" 1/4" CDU4532EGF-S 5/8" 3/8" CD454532EGH-S 5/8" 3/8"... - Page 5 DIAGRAM - 2 DIMENSIONS ARE IN MM HORIZONTAL UPTO VERTICAL SUCTION LINE LIQUID LINE MOUNTING UNIT MODEL DIAGRAM LENGTH HEIGHT WIDTH MOUNTING WEIGHT FLARE NUT FLARE PITCH PITCH TYPE NUT TYPE "A" "B" "C" "D" "E” CDU4542EXG-S 5/8" 3/8" CDUS4538EXCS-S 5/8"...
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Page 6: Unpacking, Lifting & Handling Instructions
INSTALLATION INSTRUCTIONS TO PROPERLY LOCATE THESE OUTDOOR CONDENSING UNITS, CAREFULLY CONSIDER THESE IMPORTANT FACTORS: Weight Of The Unit. If units are installed on the roof, their weight and weight distribution should be checked against the building specifications and the building codes. -
Page 7: Odcu Mounting Options
ODCU MOUNTING OPTIONS. 7.1 FLOOR 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 the page No. 4 & 5 of this booklet) -
Page 8: Odcu Serial/Tech Spec. Label Location
Outdoor Unit Dimension (mm) 900x360x805 Packing dimension (mm) 1059x500x875 Outdoor Unit Weight ( kg ) TECUMSEH PRODUCTS INDIA PVT.LTD BALANAGAR TOWNSHIP, BALA NAGAR www.tecumsehindia.com WARNING Main power supply should always be disconnected and locked off to avoid accidental start up or electric shock. -
Page 9: Electricals And Wiring Diagrams
(shown in the page no. 10 & Affixed inside the electrical cabinet/cover (See Picture-4) CAUTION: Any non-compliance with voltage ranges and phase balances or any altering of electrical components without Tecumseh written approval will void the warranty. VOLTAGE CODE RATED VOLTAGE 220-240V @ 50 Hz 1 Ø... -
Page 10: Wiring Diagrams
WIRING DIAGRAMS WIRING DIAGRAM FOR ODCU-FB 1 PHASE MODEL WIRING DIAGRAM FOR ODCU - STANDARD 1 PHASE MODEL BLUE BLUE BLUE BLUE WHITE WHITE COMP COMP GREEN GREEN BLACK BLACK GREEN GREEN HP/SW HP/SW POTENTIAL POTENTIAL BROWN (NC) BROWN (NC) RELAY RELAY GREEN... -
Page 11: Connections Of Suction & Liquid Line And Refrigerant Piping
The suction lines should be insulated with an industry accepted material of no less than ¾” wall thickness. In case, need more information, please contact Tecumseh representative. PRESSURE CONTROLS (MINI PRESSURE SWITCHES) -
Page 12: System Flushing, Purging, And Pressure Testing For Leaks
CUT IN CUT OUT REFRIGERANT HP/LP BODY CONTACT ITEM CODE PSIG PSIG 580066 18.8+1 276.4 26.7 + 0.7 392.5 BLACK CLOSED 580070 2.6 + 0.3 38.22 0.65 + 0.2 9.555 GREEN OPENED Always protect low (or dual) pressure control from excessive high pressure. It is recommended to disconnect the low-pressure (or the low side of the dual pressure) control prior to pressurization. - Page 13 Use flushing products according to the manufacturer’s instructions To flush a system, use only dry nitrogen. When pressure testing for leaks, use only regulated dry nitrogen or dry nitrogen plus trace amounts of serial label refrigerant. When purging or pressure testing any refrigeration or air conditioning system for leaks, never use air, oxygen or acetylene.
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Page 14: System Evacuation And System Charging
SYSTEM EVACUATION Following the pressure testing for leaks, the system must be evacuated. Use a vacuum pump (not a compressor) to draw a vacuum of 200 microns or less from both sides of the system. Do not attempt to draw a vacuum on the system with the pump connected only on the low side. -
Page 15: Approved Hermetic Compressor Oils
However, since excess oil can also damage compressors, care should be taken not to exceed the oil charge amounts specified. For more detail contact Tecumseh sales representative. SYSTEM START-UP PROCEDURE Check the electrical connections if they are properly attached and secured. -
Page 16: Operational Checkout Procedure
OPERATIONAL CHECKOUT PROCEDURE Check if the voltage deviation is within the specified range. Check that the ampere draw doesn’t exceed the amperage specified on the nameplate. Check the phase unbalance if there is a three-phase connection. Unbalance should not exceed 2%. Check proper phase connections on three phase models only. -
Page 17: Trouble Shooting
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. -
Page 18: A, Compressor Not Starting - Not Humming
TROUBLESHOOTING CHART Complaint Possible Causes A, COMPRESSOR NOT STARTING – NOT HUMMING. System component not functioning properly: Control/contactor stuck in open position Control off due to cold location Thermostat not functioning properly Line disconnect switch open Circuit breaker tripped 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) -
Page 19: Unit Runs Ok But Run Cycle Is Shorter Than Normal (Due To Hp/Lp Cut Out Switches)
Low voltage to compressor (single phase) or unbalanced voltage (three-phase) Compressor electrical problems, such as thermal protector or run capacitor not working properly Discharge pressure too high Suction pressure too high Return gas too warm D. UNIT RUNS OK BUT RUN CYCLE IS SHORTER THAN NORMAL (DUE TO HP/LP CUT OUT SWITCHES) System components, such as thermostat, control or contactor, not functioning properly and extra sources of current draw. - Page 20 IINSTRUCTIONS FOR THE SIGHT GLASS SOLDER TYPE...
- Page 21 INSTRUCTIONS FOR THE SOLENOID VALVE ( SOLDERING TYPE )
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Page 23: Stacking Of The Unit
STACKING OF THE UNIT !. For transportation and storage the maximum stack limit is 1+1 only !!. Care must be taken while 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 Subjected to change without notice due To continous... - Page 24 Plot No. 211, Sector 29D, Iron market, Chandigarh Ph. No: 0172-2654481 302, Navlakha, Opp: Prakash Nagar, Nemawar road, Indore-452001 (MP) Ph. No: 0731-2400554 For more information on products by Tecumseh, please visit our website: www.tecumseh.com ©2018 Tecumseh Products Company. All Rights Reserved.