Carrier 19XL specifications Introduction, Abbreviations and Explanations

CONTENTS (cont)

Page

Water Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Inspect the Starting Equipment . . . . . . . . . . . . . . 65

Check Pressure Transducers . . . . . . . . . . . . . . . . 65

Optional Pumpout System Maintenance . . . . . . 65

·OPTIONAL PUMPOUT COMPRESSOR OIL CHARGE

·OPTIONAL PUMPOUT SAFETY CONTROL

SETTINGS

Ordering Replacement Chiller Parts . . . . . . . . . . 65

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 66-97

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Checking the Display Messages . . . . . . . . . . . . . 66

Checking Temperature Sensors . . . . . . . . . . . . . . 66

·RESISTANCE CHECK

·VOLTAGE DROP

·CHECK SENSOR ACCURACY

·DUAL TEMPERATURE SENSORS

Checking Pressure Transducers . . . . . . . . . . . . . 66

· TRANSDUCER REPLACEMENT

Control Algorithms Checkout Procedure . . . . . 67

Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Page

Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

·RED LED

·GREEN LEDs

Notes on Module Operation . . . . . . . . . . . . . . . . . . 78 Processor Module (PSIO) . . . . . . . . . . . . . . . . . . . . 79

·INPUTS

·OUTPUTS

Starter Management Module (SMM) . . . . . . . . . . 79

·INPUTS

·OUTPUTS

Options Modules (8-Input) . . . . . . . . . . . . . . . . . . . 79 Replacing Defective Processor Modules . . . . . . 80

· INSTALLATION

Solid-State Starters . . . . . . . . . . . . . . . . . . . . . . . . . 81

· TESTING SILICON CONTROL RECTIFIERS IN BENSHAW, INC. SOLID-STATE STARTERS

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98,99

INITIAL START-UP CHECKLIST FOR 19XL HERMETIC CENTRIFUGAL

LIQUID CHILLER . . . . . . . . . . . . . . . . . . . CL-1-CL-12

INTRODUCTION

Prior to initial start-up of the 19XL unit, those involved in the start-up, operation, and maintenance should be thor- oughly familiar with these instructions and other necessary job data. This book is outlined so that you may become familiar with the control system before performing start-up procedures. Procedures in this manual are arranged in the sequence required for proper chiller start-up and operation.

This unit uses a microprocessor control system. Do not short or jumper between terminations on circuit boards or modules; control or board failure may result.

Be aware of electrostatic discharge (static electricity) when handling or making contact with circuit boards or mod- ule connections. Always touch a chassis (grounded) part to dissipate body electrostatic charge before working inside control center.

Use extreme care when handling tools near boards and when connecting or disconnecting terminal plugs. Cir- cuit boards can easily be damaged. Always hold boards by the edges and avoid touching components and connections.

This equipment uses, and can radiate, radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC (Federal Com- munication Commission) Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own expense, will be required to take whatever measures may be re- quired to correct the interference.

Always store and transport replacement or defective boards in anti-static shipping bag.

ABBREVIATIONS AND EXPLANATIONS

Frequently used abbreviations in this manual include:

CCN	Ð	Carrier Comfort Network
CCW	Ð	Counterclockwise
CW	Ð Clockwise
ECW	Ð	Entering Chilled Water
ECDW	Ð	Entering Condenser Water
EMS	Ð	Energy Management System
HGBP	Ð Hot Gas Bypass
I/O	Ð	Input/Output
LCD	Ð	Liquid Crystal Display
LCDW	Ð	Leaving Condenser Water
LCW	Ð	Leaving Chilled Water
LED	Ð	Light-Emitting Diode
LID	Ð	Local Interface Device
OLTA	Ð	Overload Trip Amps
PIC	Ð	Product Integrated Control
PSIO	Ð	Processor Sensor Input/Output Module
RLA	Ð Rated Load Amps
SCR	Ð	Silicon Control Recti®er
SI	Ð	International System of Units
SMM	Ð	Starter Management Module
TXV	Ð	Thermostatic Expansion Valve

The 19XL chillers use HCFC-22 and HFC-134a refrig- erant. When referencing refrigerant charges in this manual, the HCFC-22 charge will be listed ®rst and the HFC-134a value will be shown next to it in brackets [ ].

Words printed in all capital letters and italics represent val- ues that may be viewed on the LID.

The PSIO software version number of your 19XL unit will be located on the front cover.

4