MCC 50-2104 - Page 3

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© 2015 Mobile Climate Control
T-367Rev . 05/2015
4.2 OPENING TOP COVER (EVAPORATORS) 4-2..............................................
4.3 REMOVING TOP COVERS (CONDENSER) 4-2.............................................
4.4 SUCTION AND DISCHARGE SERVICE VALVES 4-3.........................................
4.4.1 Installing R--134a Manifold Guage Set 4-4...............................................
4.4.2 SYSTEM PUMP DOWN FOR LOW SIDE REPAIR 4-6....................................
4.4.3. Removing Entire System Charge 4-7....................................................
4.5 REFRIGERANT LEAK CHECK 4-7.........................................................
4.6 EVACUATION AND DEHYDRATION 4-7....................................................
4.6.1 General 4-7..........................................................................
4.6.2 Preparation 4-7.......................................................................
4.6.3 Procedure for Evacuation and Dehydrating System (One Time Evacuation) 4-8...............
4.6.4 Procedure for Evacuation and Dehydrating System (Triple Evacuation) 4-8...................
4.7 CHECKING AND ADDING REFRIGERANT TO SYSTEM 4-8..................................
4.7.1 Checking Refrigerant Charge By Pressures 4-8...........................................
4.7.2 Checking Refrigerant Charge By Receiver Sight Glasses 4-9...............................
4.7.3 Adding Full Charge 4-9................................................................
4.7.4 Adding Partial Charge 4-11.............................................................
4.8 CHECKING SYSTEM FOR NON--CONDENSIBLES 4-11.......................................
4.9 CHECKING AND REPLACING HIGH OR LOW PRESSURE SWITCH 4-11.......................
4.10 FILTER--DRIER 4-12......................................................................
4.10.1 To Check Filter--Drier 4-12...............................................................
4.10.2 To Replace Filter--Drier 4-12.............................................................
4.11 SERVICING THE LIQUID LINE SERVICE VALVE 4-12.........................................
4.11.1 Coil Replacement 4-13.................................................................
4.11.2 Internal Part Replacement 4-13..........................................................
4.11.3 Replace Entire LLS Valve 4-13...........................................................
4.12 THERMOSTATIC EXPANSION VALVE 4-14..................................................
4.12.1 Valve Replacement 4-14................................................................
4.12.2 Superheat Measurement 4-14...........................................................
4.13 REPLACING EVAPORATOR RETURN AIR FILTERS 4-15.....................................
4.14 COMPRESSOR MAINTENANCE 4-16.......................................................
4.14.1 Shaft Seal Reservoir 4-16...............................................................
4.14.2 Refrigerant Removal From An Inoperative Compressor. 4-16................................
4.14.3 Pump Down An Operable Compressor For Repair 4-16.....................................
4.14.4 Removing the Compressor 4-17.........................................................
4.14.5 Transferring Compressor Clutch 4-18.....................................................
4.14.6 Compressor Oil Level 4-19..............................................................
4.14.7 Checking Unloader Operation 4-19.......................................................
4.15 TEMPERATURE SENSOR CHECKOUT 4-21.................................................
4.16 PRESSURE TRANSDUCER CHECKOUT 4-21...............................................
4.17 REPLACING SENSORS AND TRANSDUCERS 4-21..........................................
ELECTRICAL 5--1................................................................................
5.1 INTRODUCTION 5--1.....................................................................