User ManualTable of ContentsService Philosophy4System Description5System Level Components5Description5Chiller Module (CPM) IU16Compressor Module (MCSP) 1U4 and 1U56Expansion Valve Module (EXV) 1U36Options Module (CSR) 1U27Clear Language Display (CLD) 1U67Interprocessor Communication Bridge (IPCB) 1U77IPC Diagnostics8Troubleshooting Modules Using IPC Diagnostics9Figure 1 IPC Link Order For 70-125 Ton RTAA10Figure 2 Module Fuse and Power Connection, Except CLD11Figure 3 IPC Jumper For Bypassing Modules (to be inserted into MTA connector in place of module)12Troubleshooting Procedure12Temperature Sensor Checkout Procedure15Restart Inhibit Timer19Figure 4 Variable Speed Fan (VSF) and Fan Staging Control21Outdoor Air Temperature and Fan Control22VSF Inverter Fault22CT and MCSP Compressor Current Input Checkout Procedure24Under-Over Voltage Transformer Checkout32Checkout Procedure for MCSP Load/Unload Outputs35Checkout Procedure for the Slide Valve and Load/ Unload Solenoids36Setup36Load37Figure 5 Manual Slide Valve Diagnostic Flow Chart - Load38Unload38Figure 6 Manual Slide Valve Diagnostic Flow Chart39Checkout Procedure for MCSP Step Load Output39Checkout Procedure for Step Load Solenoid Valve and Piston40Power Supply41Figure 7 AC Power Connection To Modules42Clear Language Display (CLD) 1U6 Keypad Overview42Figure 8 Operator Interface Adaptive Control43Select Report Group43Select Settings Group44Passwords44Select Report Group and Select Settings Group Flowcharts44Auto/Stop Keys45Power Up45Figure 9 CLD Module (1U6)46LEDs46Chiller Module (CPM) (1U1)46Test Points47Figure 10 CPM (Chiller) Module (1U1)48I/O terminals48Options Module (CSR) (1U2)50Test Points50Switch SW-150External Setpoint Inputs (4-20ma/2-10VDC)50Setpoint Priority52Figure 11 Chilled Water Setpoint Arbitration53Figure 12 Current Limit Setpoint Arbitration54ICS Communications55I/O Terminals55Figure 13 CSR (Options) Module (IU2)57Electronic Expansion Valve Module (EXV) (1U3)58Valve Operation58Figure 14 SEO 70, 100 Electronic Expansion Valve Cut Away View59Figure 15 SHEI Valve60Electronic Expansion Valve Location60Figure 16 Electronic Expansion Valve Location61Test Points61EXV Test61EXV Test Procedure61Electrical Integrity Test61Stroke Timing Test62SEO EXV Valve Winding Resistance Check62SEHI EXV Valve Winding Resistance Check63Solder Techniques for Installation63SEO Electronic Expansion Valve Servicing64Figure 17 Electronic Expansion Valve Soldering64Figure 18 SEO Electronic Expansion Valve Exploded View66SEHI Electronic Expansion Valve Servicing67Figure 19 SEHI Electronic Expansion Valve Exploded View68Figure 20 SEO Electronic Expansion Valve Module (1U3)69Figure 21 SEHI Electronic Expansion Valve Module (1U3)70I/0 terminals70Compressor Module (MCSP) (1U4 AND 1U5)72Test Points72IPC Address Switch SW172Current Gain (or Overload) Dip Switch SW272Binary Inputs73Temperature Inputs73Current Inputs73Isolated Binary Input: Winding Temperature74Relay Outputs74Triac Outputs74I/O Terminals75Figure 22 Compressor Module (MCSP) (1U4 and 1U5)77Interprocessor Communication Bridge Module (IPCB) (1U7)78Figure 23 IPCB Nominal Terminal Voltages78LonTalk® Communications Interface - Chillers Module (LCI-C) (1U8)79Figure 24 LCI-C Nominal Terminal Voltages79Inverter Diagnostics80Troubleshooting Procedure82Figure 25 Variable Speed Fan Inverter83Service Pumpdown85Service Pumpdown Procedure85COMPRESSOR TEST86Invoking Compressor Test86Circuit Lockout87Invoking Circuit Lockout87Circuit Diagnostic Reset87Invoking Circuit Diagnostic Reset87Size: 1.75 MBPages: 88Language: EnglishOpen manual