chillers centrifugal rotary

7/28/2019 Chillers Centrifugal Rotary

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© American Standard Inc. 2000 European training Center 1

An Am erican Standard Company




Safety: Tip

Purpose: Impart a basic Service course on Chillers, Maintenance andthe Safety Hazards associated.

Agenda: As described in next slide.

Code of Conduct: Active participation; laptops down; turn off cellphones; respect the norms of good listener/speaker.

Expectations: Interest to know and learn about presented theme.

Ability to understand safety issues associated withmaintenance activities.

Roles: Facilitator –Natalie Narce and participants.

SPACER




Agenda

1. Product Overview -30 min.

2. Centrifugal/Rotary Basics -30 min.

3. CH530 Control System -20 min.

4. Maintenance and Service requirements – 30 min.

5. Safety Hazards

–

45 min



Section 1

© American Standard Inc. 2000 European training Center

Chillers: Centrifugal / Rotary

Product Overview


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5

CVG/HF Liquid Cooled Centrifugal

Completely New

Design

More Efficient Than

Past Designs -- .58to .65 kW per Ton

CH530 Micro

Processor

Electronic Adaptive

Control




RTAC Unit Design

6




CVG/HF Product Overview

Starter

Panel

High Lift

Unloading

Line

ControlPanel

Falling Film

Evaporator

Liquid Line

Oil Pump/Motor

Cover Plate

Oil Filter

Shear

Plate

Condenser

Compressor




CVG/HF Product Overview

Motor Cooling Filter

Condenser

Brazed plate

Oil Cooler

Liquid Lines

Economizer

Discharge Line

Guide

Vane

Actuator

SuctionLine




CVG/HF Refrigerant Circuit

Condenser

Economizer

Evaporator

Compressor

High LiftUnloader Valve




RTAC Refrigeration Cycle

1

Condenser

Evaporator

Compressor Oil Separator

LVS

EXV

Sub-cooler




CVG/HF Compressor

Suction

Cover

Motor

Stator

Motor

Rotor

Motor

Terminal

•2 stages

•2 IGV sets linked together

•10,440 RPM

DischargeVolute

Motor

Shaft

Motor

Housing




Oil Circuit Flow

Evaporator

Compressor

Oil Sump

Oil Pump




Oil Cooling Flow (Thermosiphon)

Condenser

Warm Oil

C o o l O

i l

Cool Liquid Refrigerant

Warm Vapor Refrigerant

Oil Cooler

Oil Sump




Condenser Flow

R134a Vapor

R134a Liquid

Tube: Wolverine Turbo C2

Anti - Vortex Baffle




Economizer Flow

R134a Vapor

R134a Liquid

Anti - Vortex Baffle




Evaporator Flow

R134a Vapor

R134a Liquid Refrigerant 99%

Oil 1%

Tube: Wolverine Turbo B3

Heat In

Cool

Out

OUT IN




Energy Efficient Tubes

Advanced Heat Transfer Surfaces Finned and Grooved

Condenser Tubes -- IECU 1.00

Inch or 25.4 mm and TECU .75

Inch or 19.0 mm

Evaporator Tubes -- Same

Diameter as Condenser Tubes

Choice of Standard or High

Efficiency Tubes in 3 shell sizes- 500-700-1,000 Tons -- 1,750 kw,

2,450 kw, 3,500 kw




Tube Design - Condenser/

Evaporator

C2

B2




Intelligent Control Module: CH530

Provides over 120 Diagnostics

and Operational points

Integral Report

Capacity to send information

Continual registration every 5

sec. via modem




Compressor Reliability - Low

Maintenance

Semi- Hermetic Motor

Refrigerant Liquid Cooled

No Shaft Seals / Couplings

Labyrinth Gas Seals

Ball Bearings and Directional

Babbitt Journal Bearings -




Service / Low Maintenance

Oil Pump discharge: R134a + Solest 68 oil

Oil Pump filter:

4 microns

Designed for life

Isolating valves

Oil Heaters: In leak proof well

Motor cooling filter:

Designed for life




CVGF Vs CVGE

CVG/HF 500 TECU Impeller speed:10,440 RPM

1st and 2nd stage moveable

Oil sump: integral with

comp. Ref charge: 748 Pounds or

340 kg of R-134a

Oil: 14.8 Gal. or 56 liters

2 pass condenser Falling film evaporator

CVGE 045 Long

Impeller speed:12,250 RPM

First stage moveable

(CCGA)

Separate oil sump Ref. charge: 1720 Pounds or

780 kg of R-134a

Oil: 14.8 Gal. or 56 liters

1 pass condenser Flooded evaporator



An Am erican Standard Company

chillers centrifugal rotary

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