CVRE motor burn out

[dlove]

The chiller motor popped and below is the log after it tripped. I dont have a lot of details to offer heres what i do know. going over a four month period.

1. day one, chiller control panel fried
2. replaced chiller panel with used panel.
3. after 12 hrs, used panel blows
4. chiller down for several weeks until new panel installed.
5. startup, chiller runs for two weeks but experiences many problems with surging and water flows. then motor blows.
6.Chiller is found to be 450lbs short of freon after pump down

I have no operating logs during the time it did run, no history of megg test, I'm still gathering information.

one issue that i did find out about was they found the control transformer for the pumps had blown so the unit would not start unless we flipped the pumps on hand. we replaced the tranformer.

I have three questions then i will leave it to you all to have some fun and give some "what do i think may have happened" or what would you all look at?

Questions:

1. if the unit tripped on a latched alarm, would this be a manaul reset or would it try to auto reset when the status changed.
2. do you think the new panel could of been a factor in the sequence of operation
3. from the alarm history what do you think was going on? what jumps out at you?


grab a cup of coffee and enjoy, Thanks in advance for the help!




Chiller Service Report

Refrigerant Type R11
Notes Log after unit tripped breaker motor grounded

Tracer TU Configuration
Version 7.1.67

PC Configuration
Operating System Windows XP
OS Version 5.1.2600.196608 - Service Pack 3

Unit Information
Chiller Model Number CVRE
Product Name Tracer UC800
Application Part Number 6200-0496-2.00
Boot Part Number 6200-0446-1.00
Build Part Number 6200-0495-2.00
Current Date/Time 12/20/2011 10:31 AM

Controller Settings
Date and Time
Time Format 12-Hour
Date Format MMDDYYYY
Date Separator Slash (/)

Units
Unit System Inch-Pound
Pressure Units psia

Protocol
BAS Interface Not Installed

Chiller Configuration
Main
CVR Unit Type (MODL)
Wye-Delta Starter Type

UC800
800 Tons Unit Capacity(PTON)
800 Tons Compressor Size(NTON)
R11 Refrigerant Type
15 psig Condenser High Pressure Cutout
Not Installed Second Condenser
Stepper IGV Type
10 minutes Max Capacity Relay Filter Time
10 minutes Head Relief Relay Filter Time
Pressure Sensors Oil Management Type
75 Ohm RTDs Motor Temperature Protection Type
Water Pump Control Water Pump Control

Options
Single IGV Actuators
Not Installed Purge Control
Installed Line Voltage Sensing

UC800
Not Installed Compressor Refrigerant Discharge Temperature Sensor

Options
Not Installed Bearing Temperature Sensors
Installed Condenser Pressure Sensor
Not Installed Hot Water Control
Installed Evap Differential Wtr Press
Installed Condenser Differential Water Pressure
Not Installed Free Cooling
Not Installed Outdoor Air Temp Sensor
Not Installed Base Loading
Installed Ice Building
2 - 10 Vdc External Chilled Water Setpoint
2 - 10 Vdc External Current Limit Setpoint
Not Installed Refrigerant Monitor Type
Not Installed % RLA and Condenser Rfgt Pressure Output
One Relay Card Installed Operating Status Programmable Relays
Not Installed Hot Gas Bypass
Utility Compressor Power Source
Not Installed Enhanced Oil Temperature Protection
Installed Chiller Running Oil Temperature Control
Not Installed BAS Interface
Quad Relay Relay Option Package
CVHE Operator Display Image Type
Not Installed Starter Safety Inputs
Not Installed Call for Cooling and Interlock

Options Setup
34 °F ECWS Minimum Temperature
65 °F ECWS Maximum Temperature
40 %RLA ECLS Minimum %RLA
100 %RLA ECLS Maximum %RLA
Chiller Running Module 1 Programmable Status Relay 1 (J2-1,2,3)
Chiller Latching Alarm Indicator Module 1 Programmable Status Relay 2 (J2-4,5,6)
Chiller Maximum Capacity Indicator Module 1 Programmable Status Relay 3 (J2-7,8,9)
Purge Alarm Module 1 Programmable Status Relay 4 (J2-10,11,12)
14 psid Evaporator Differential Water Pressure Range
12 psid Condenser Differential Water Pressure Range

Starter
3 Seconds Stop Delay Time (Contactor Interrupt Failure)
460 Voltage Unit Line Voltage
20 Voltage Transformer Ratio
817 Amps Rated Load Amps
864 Amps CT Meter Scale
30 Percent Current Unbalance Trip Point
90 Seconds Current Unbalance Grace Period
27 Seconds Maximum Acceleration Setting
Shutdown Acceleration Time Out Action
Linear Overload Type
Enable Phase Reversal Protection
Disable Contactor Integrity Test
700 milliseconds Phase Reversal Grace Period
Enable Surge Protection
Enable Momentary Power Loss Protection
150 Seconds Restart Inhibit Stop to Start Time
20 Percent Surge Sensitivity
150 Seconds Power Loss Reset Time

Chiller Status
Chiller Modes
Stopped Chiller Top Level Mode
Local Stop Chiller Sub Mode
Diagnostic Shutdown - Manual Reset Chiller Sub Mode
Chiller Sub Mode
Chiller Sub Mode
Chiller Sub Mode
Chiller Sub Mode

Diagnostic Modes
Stopped Chiller Mode at Time of Last Diagnostic
Software Service Lock Diagnostic Sub Mode
Local Stop Diagnostic Sub Mode
Diagnostic Shutdown - Manual Reset Diagnostic Sub Mode
Diagnostic Sub Mode
Diagnostic Sub Mode
Diagnostic Sub Mode

Chiller
Stopped Active Chiller Auto/Stop Command
0.0% Chilled Water Control Feedback Command
0.0% Chilled Water Control Feedforward Cmd
0.0% Chiller Control Signal
0.0% Chiller Control Signal Target
Cooling Chiller Heating or Cooling Mode
Off Chiller Running
On Emergency Stop
Auto External Auto Stop
Stop Front Panel Auto/Stop
Off Head Relief Request Relay
00:00 Min:Sec Ice To Normal Time Remaining
False Manual Override Exists
Off Maximum Capacity Relay
00:00 Min:Sec Minimum Capacity Time Remaining
False Need To Cool
True Need To Heat
00:00 Min:Sec Post-Lubrication Time
0 Sec Power Up Delay Inhibit
00:00 Min:Sec Pre-Lubrication Time
R11 Refrigerant Type

Evaporator
45.0 °F Active Chilled Water Setpoint
Front Panel Active Chilled Water Setpoint Source
27.0 °F Active Ice Termn Setpoint
Front Panel Active Ice Termination Setpoint Source
0.0 tons Calculated Chiller Capacity
0.3 gpm Approx Evap Water Flow
13.4 °F Evaporator Design Delta Temp
0.00 PSID Evap Differential Wtr Press
45.4 °F Evap Entering Water Temp
45.0 °F Filtered Chilled Water Setpoint
45.5 °F Evap Leaving Water Temp
12.0 °F Evaporator Leaving Water Temp Cutout
Off Evaporator Pump Control
Auto Evaporator Pump Override
60:00 Min:Sec Evaporator Pump Override Time Remaining
No Flow Evaporator Water Flow Switch
No Flow Evap Water Flow Status
1 Min Evaporator Water Pump Off Delay
------ Ext Chilled Wtr Setpt
Disable Ext Chilled Wtr Setpt
45.0 °F Front Panel Chilled Water Setpt
False Front Panel Ice Building Command
27.0 °F Front Panel Ice Termn Setpt
105.0 °F High Evaporator Water Temperature Cutout

Condenser
0.0 gpm Approx Cond Water Flow
0.00 PSID Cond Differential Wtr Press
66.6 °F Cond Entering Water Temp
67.2 °F Cond Leaving Water Temp
60:00 Min:Sec Condenser Pump Override Time Remaining
No Flow Cond Water Flow Status
1 Min Condenser Water Pump Off Delay
Off Condenser Pump Control

Circuit
------ Cond Approach Temp
8.3 PSIA Cond Rfgt Pressure
66.1 °F Cond Sat Rfgt Temp
0.66 PSID Differential Refrigerant Pressure
------ Evap Approach Temp
7.6 PSIA Evap Rfgt Pressure
43.4 °F Evap Sat Rfgt Temp
Off High Pressure Cutout Circuit

Motor
50.0% Active Current Limit Setpoint
Front Panel Active Current Limit Setpoint Source
0.0 A Average Line Current
0.0% Average Line Current % RLA
100.0% Current Limit SoftLoad Target
0.0% Electro-Mech. Phase Unbalance
18400 kWh Energy Consump NonReset
18400 kWh Energy Consumption Resettable
Disable Ext Current Limit Setpt
------ Ext Current Limit Setpt
50.0% Front Panel Current Limit Setpoint
100.0% Ice Machine Current Limit Setting
------ Motor Temperature
------ Motor Winding Temp #1
------ Motor Winding Temp #2
------ Motor Winding Temp #3
00:00 Min:Sec Restart Inhibit Time
Stopped Compressor Running
2.0 V Starter Average Phase Voltage
0.0 A Starter Current L1
0.0% Starter Current L1 % RLA
0.0 A Starter Current L2
0.0% Starter Current L2 % RLA
0.0 A Starter Current L3
0.0% Starter Current L3 % RLA
0.00 Starter Load Power Factor
0.0% Starter Max Current
0.0 kW Starter Power Consumption
0.0 kW Starter Power Demand
Disable Starter Test Mode
2.0 V Starter Voltage Phase AB
2.0 V Starter Voltage Phase BC
2.0 V Starter Voltage Phase CA
------ Time of Last Reset
False Transition Complete

Compressor
0.0% Compressor Control Signal
Inactive Compressor Running Relay
Stopped Compressor Running
40:33 Hr:Min Compressor Running Time
20 Compressor Starts
3.1 PSIA High Vacuum Trip Point
0 steps Inlet Guide Vane 1 Manual Position Comma
0.0% IGV1 Position
0 steps IGV1 Position Steps
Auto Inlet Guide Vane Control
0.00 PSID Oil Differential Pressure
On Oil Heater Command
Off Oil Pump Command
Auto Oil Pump Control
8.4 PSIA Oil Pump Discharge Pressure
00:00 Min:Sec Oil Pump Override Time Remaining
8.5 PSIA Oil Tank Pressure
129.2 °F Oil Tank Temperature

Chiller Service Setpoints
Chiller Setpoints
45.0 °F Front Panel Chilled Water Setpt
50.0% Front Panel Current Limit Setpoint
Auto Front Panel Ice Building Command
2.0 °F Differential to Start
5.0 °F Differential to Stop
Ext/FP Setpoint Source
264.2 gpm Evaporator Water Flow Point 1
1.45 PSID Evaporator Pressure Drop Point 1
422.7 gpm Evaporator Water Flow Point 2
4.35 PSID Evaporator Pressure Drop Point 2
1.000 Evaporator Fluid Specific Gravity
1.000 Evaporator Fluid Specific Heat
600.0 gpm Evap Low Water Flow Warning Setpoint
264.2 gpm Condenser Water Flow Point 1
1.45 PSID Condenser Pressure Drop Point 1
422.7 gpm Condenser Water Flow Point 2
4.35 PSID Condenser Pressure Drop Point 2
0.0% Minimum Capacity Limit
100.0% Maximum Capacity Limit
0.0% Chiller Start Initial Capacity Command

Compressor Setpoints
143.0 °F Oil Temperature - Compressor Stopped
100.0 °F Oil Temperature - Compressor Running
95.0 °F Low Oil Temperature Inhibit Setpoint
12.00 PSID Low Diff Oil Pressure Cutout Setpoint
Disable Check Oil Filter Diagnostic
15.00 PSID Check Oil Filter Setpoint
4 Hr Check Oil Heater Setpoint
Normal Shutdown Motor Winding Temp Diagnostic Severity
180 Sec Post-Lube Time Setpoint
60 Sec Pre-Lube Time Setpoint

Chiller Field Startup Settings
Feature Settings
Disable Chilled Water Reset Type
50.0% Return Reset Ratio
10.0 °F Return Start Reset
5.0 °F Return Maximum Reset
10.0% Outdoor Reset Ratio
90.0 °F Outdoor Start Reset
5.0 °F Outdoor Maximum Reset
Disable Ext Chilled Wtr Setpt
Disable Ext Current Limit Setpt
27.0 °F Front Panel Ice Termn Setpt
13.4 °F Evaporator Design Delta Temp
12.0 °F Evaporator Leaving Water Temp Cutout
50000 steps Inlet Guide Vane Max Steps First Stage
12.0 °F Low Refrigerant Temp Cutout
93.0% Condenser Limit Setpt
Enable Restart Inhibit Diagnostic
3 Restart Inhibit Free Starts
30 Min Restart Inhibit Start to Start
12.8 PSIA Local Atmospheric Pressure
105.0 °F High Evaporator Water Temperature Cutout
110.0 °F High Evaporator Rfgt Temp Warning
Enable Ice Building Feature
100.0% Current Limit Softload Start Point
Enable Phase Unbalance Limit Protection
Enable Over/Under Voltage Protection
Enable Minimum Capacity Timer
Enable Control Algorithm Flow Compensation
Enable Disable Surge Diagnostic

Manual Settings
False Clear Energy Consumption
False Clear Restart Inhibit Timer

Timers
5 Min Ice to Normal Cooling Timer Setpoint
480 Min Maximum Time at Minimum Capacity
15 Sec Power-Up Start Delay
1 Min Condenser Water Pump Off Delay
1 Min Evaporator Water Pump Off Delay
60 Sec Capacity Control Softload Time
60 Sec Current Limit Control Softload Time
15 Min Starter Power Demand Time Period

Level 4 Gains and Start Sequence
Normal Start Sequence Type
Normal Evaporator Pump Control Type
50.0 Chilled Water Control Gain Kp
120 Sec Chilled Water Control Reset Time
0.0 Chilled Water Control Gain Kd
80.0% Chilled Water Control Feedforward Gain
25.0% Evap/Cond Lift Corrections

Level 4 Starts and Runtime
40:33 Hr:Min Compressor Running Time
20 Compressor Starts

Chiller Purge
Active Alarms
Target Severity Date/Time Persistence Description
Chiller Normal Shutdown 12/20/2011 10:11 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:11 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:11 AM Latching Motor Winding Temperature 1 Sensor

Historic Alarms
Target Severity Date/Time Persistence Description
Chiller Normal Shutdown 12/20/2011 10:05 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:05 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:05 AM Latching Motor Winding Temperature 1 Sensor
Chiller Normal Shutdown 12/20/2011 10:04 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:04 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:04 AM Latching Motor Winding Temperature 1 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 1 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 1 Sensor
Chiller Immediate Shutdown 12/20/2011 10:03 AM Latching Starter Comm Loss: Main Processor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 10:03 AM Latching Motor Winding Temperature 1 Sensor
Chiller Normal Shutdown 12/20/2011 09:41 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 09:41 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 09:41 AM Latching Motor Winding Temperature 1 Sensor
Chiller Immediate Shutdown 12/20/2011 09:24 AM Latching Starter Comm Loss: Main Processor
Chiller Normal Shutdown 12/20/2011 09:24 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 09:24 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 09:24 AM Latching Motor Winding Temperature 1 Sensor
Chiller Normal Shutdown 12/20/2011 09:09 AM Latching Motor Winding Temperature 3 Sensor
Chiller Normal Shutdown 12/20/2011 09:09 AM Latching Motor Winding Temperature 2 Sensor
Chiller Normal Shutdown 12/20/2011 09:09 AM Latching Motor Winding Temperature 1 Sensor
Platform Warning 12/20/2011 09:09 AM Nonlatching MP: Reset Has Occurred
Chiller Normal Shutdown 12/15/2011 12:46 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/14/2011 08:30 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/14/2011 03:37 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/13/2011 08:30 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/13/2011 05:31 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/12/2011 08:36 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/12/2011 01:09 AM Nonlatching Evaporator Water Flow Overdue
Chiller Immediate Shutdown 12/09/2011 10:27 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/09/2011 04:19 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/09/2011 04:19 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/09/2011 07:11 AM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/09/2011 07:11 AM Nonlatching Evaporator Water Flow Lost
Chiller Immediate Shutdown 12/09/2011 03:12 AM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/09/2011 03:01 AM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/09/2011 12:15 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/08/2011 04:39 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 04:39 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/08/2011 02:35 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 02:35 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/08/2011 02:35 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 02:35 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/08/2011 02:34 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 02:34 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/08/2011 02:34 PM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 02:34 PM Nonlatching Evaporator Water Flow Lost
Chiller Immediate Shutdown 12/08/2011 07:32 AM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/08/2011 07:12 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:12 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:12 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:12 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:12 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:11 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 07:11 AM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/08/2011 05:22 AM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 12/08/2011 05:20 AM Nonlatching Evaporator Water Flow Lost
Chiller Immediate Shutdown 12/07/2011 04:09 AM Nonlatching Evaporator Water Flow Lost
Chiller Immediate Shutdown 12/07/2011 02:52 AM Nonlatching Evaporator Water Flow Lost
Chiller Immediate Shutdown 12/07/2011 01:49 AM Nonlatching Evaporator Water Flow Lost
Chiller Warning 12/07/2011 01:41 AM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/07/2011 01:17 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/06/2011 08:30 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/06/2011 07:12 AM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 12/06/2011 12:29 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/05/2011 08:30 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/05/2011 03:00 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/04/2011 08:31 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/02/2011 07:16 AM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 12/02/2011 03:16 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/01/2011 08:51 PM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/01/2011 08:51 PM Nonlatching Low Evaporator Water Flow
Chiller Warning 12/01/2011 08:31 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 12/01/2011 08:25 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 12/01/2011 07:36 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 12/01/2011 07:07 AM Nonlatching Low Evaporator Water Flow
Chiller Immediate Shutdown 11/30/2011 08:23 PM Latching Condenser High Pressure Cutout
Chiller Immediate Shutdown 11/30/2011 08:17 PM Nonlatching Evaporator Water Flow Lost
Chiller Warning 11/30/2011 03:01 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 11/30/2011 01:49 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 11/30/2011 01:24 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 11/30/2011 04:00 AM Nonlatching Evaporator Water Flow Overdue
Chiller Warning 11/29/2011 08:30 PM Nonlatching Low Evaporator Water Flow
Chiller Normal Shutdown 11/29/2011 08:21 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 11/29/2011 03:47 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 11/29/2011 03:43 PM Nonlatching Evaporator Water Flow Overdue
Chiller Normal Shutdown 11/29/2011 03:38 PM Nonlatching Evaporator Water Flow Overdue
Platform Warning 11/28/2011 02:11 PM Nonlatching MP: Reset Has Occurred
Ice Building Normal Shutdown 11/28/2011 11:31 AM Latching Comm Loss: Ice Building Relay
Chiller Warning 11/28/2011 11:31 AM Latching Comm Loss: Evaporator Water Pump Relay
Chiller Warning 11/28/2011 11:31 AM Latching Comm Loss: Condenser Entering Water Temp
Chiller Normal Shutdown 11/28/2011 11:31 AM Latching Comm Loss: Motor Winding Temperature 2

LLID List
Condenser Refrigerant Pressure Transducer
Condenser Saturated Refrigerant Temperature Sensor
Evaporator Saturated Refrigerant Temperature Sensor
Inlet Guide Vane Actuator
Motor Winding Temperatures 1, 2, and 3
Oil Tank Temperature Sensor
Oil Tank Pressure Transducer
Oil Pump Discharge Pressure Transducer
Evaporator Entering Water Temperature Sensor
Evaporator Leaving Water Temperature Sensor
Condenser Entering Water Temperature Sensor
Condenser Leaving Water Temperature Sensor
External Auto/Stop and Emergency Stop Inputs
External Current Limit and Chilled Water Setpoints
External Ice Building Command and Unused Input
Condenser Water and Evaporator Water Flow Switch/Interlock
Operating Status Programmable Relays Module 1
Oil/Refrigerant Pump Motor Control Relay
Condenser and Evaporator Water Pumps, Oil Tank Heater Control, and Ice Building Relays
Condenser High Pressure Cutout Switch and HGBP Valve Closed Input
Evaporator and Condenser Water Differential Pressure Inputs
Starter Module

[Nuclrchiller]

I'll help get the ball rolling on this. First, you might get more responses in a chiller forum. To answer your questions: 1- Latched is Trane's word for manual reset, however deenergizing and then energizing the control panel has the same effect as manually resetting it. It should not automatically reset a latched alarm in any way other than a manual reset or deenergizing power.2 - Concerning the "sequence of operation" depends on what panel it replaced. Should be no major change, if any. Probably not even noticable to the operator. However, the more important question (and the one you may be asking) is how does the new panel affect the chiller overall. It is extemely important that the new panel is configured properly for the chiller it is on and also all settings for the safeties are set correctly. 3 - First thing I see is the "motor winding temperature sensor" diagnostics. Under UC800 it shows that for "Motor Temperature Protection Type", "75 Ohm RTDs" was selected, but under "Motor Report" there is a blank reading for all 3 "Motor Winding Temp" readings. It would help to know what the original chiller model number was, or what control panel it had. Earlier models had a temperature switch for motor temp protection, and (some ?) later models may have used a different RTD. Also, there are several low evaporator water flow issues. I suspect the earliest recorded ones, dated 12/01/11 and earlier may be due to the new panel installation being completed and undergoing testing by the installers. So let's look at later ones. "Nonlatching Evaporator Water Flow Overdue" -When the chiller is in "Auto" it attempts to run the chilled water pump. For some reason the chiller saw no proof of flow. Either there was no flow or the flow proving device failed.; "Nonlatching Low Evaporator Water Flow" - The evaporator water flow rate, as measured by the optional entering and leaving water pressure transducers (plus some calculating by the control panel using those values and settings programmed into the panel by the installer), is below the setpoint as entered (adjustable). For what it's worth - I have not seen transducers available that I consider accurate and reliable for this function and I always disabled this to prevent such nuisance diagnostics.; "Nonlatching Evaporator Water Flow Lost" - The flow proving device/circuit saw a loss of flow while the chiller was in a "Run" mode. Either flow actually stopped or the device (paddle switch, differential pressure switch, thermal dispersion sensor, etc...) failed. Also, "nonlatching" is Trane speak for auto reset, when the condition that caused that diagnostic is corrected the chiller will automatically restart if in "Auto" and a call for cooling exists.

[Nuclrchiller]

I see this is on a Y-Delta starter, and that the "Contactor Integrity Test" is disabled. I prefer to enable this to give some additional motor protection in the unlikely event of a stuck or welded contactor.

[Nuclrchiller]

The first thing I would do to determine what caused the motor to blow (after verifying that little fact myself ) is verify the new panel was correctly set up, and then inspect/test the starter. I am concerned about motor temp sensors issue. It should not have run from day one the it looks now. Was something changed? What is current status of those sensors, the LLID they connect to?

[dlove]

great input!

And i agree, i need to find the main reason why. I hope to have all the logs sent to me. I understand everything your saying. I was wondering if the refrigerant that cools the motor may have been slowed or stopped altogether due to pressures or water temps that prevented the motor to be properly cooled.

[Nuclrchiller]

Do you know what the original model number was? Trane gives a new model number to a chiller that has been retrofitted with an updated control panel. I believe that is what CVRE means. That tells us next to nothing about what style the chiller is. A brief description would help if you don't know. Or the first four digits of the serial number. I ask because different models are affected to different degrees, in regards to motor cooling, by the difference between evaporator and condenser pressures. I have also seen it affected by low refrigerant charge. These will usually be exposed first by the outboard bearing temperature sensor, if installed. Which you don't have.

[Nuclrchiller]

Also, why is "Evaporator Leaving Water Temp Cutout" set at 12 degrees? And "Low Refrigerant Temp"? Especially since "Front Panel Chilled Water Setpoint" is at 45 degrees.

[dlove]

Model # CVHE080FAR2VC273EDEZC12DAZC0000000061W0A

also, these chillers make ice at night.

[beenthere]

Moved to Chillers forum.

[Nuclrchiller]

Model # CVHE080FAR2VC273EDEZC12DAZC0000000061W0A

also, these chillers make ice at night.

Thanks. I have one more question (for now ); Is this new enough to have a refrigerant pump? The easy way to tell is the location of the oil tank - if the oil tank is located on top of the evaporator, directly under the motor, then it has no refrigerant pump. If the oil tank is under the condenser, on the floor, then it has the refrigerant pump. With the refrigerant pump, the chiller will operate at lower refrigerant differential pressure. Trane states down to 3 PSID, under steady state conditions. And down to 5 PSID without. Ice making mode explains the low limits. I'm sure glycol's been verified?

[jayguy]

the chiller report shows R11 as the selected refrigerant. Trane did not offer R11 in the chillers with the refrigerant pump...unless this chiller was not setup properly.

i also see several things not installed...
bearing temperature sensors
safety starter inputs
purge

these are pretty basic items that should have been installed

why is the atmospheric pressure set to 12.8 psia?

[deltap10]

I tell customers the motor usually blows on the third reset. Looks like your guy got a few more. Latching faults mean the problem should be investigated and fixed before restarting. That panel has a data log that can be extracted and examined to help identify the problem. Requires factory level access and a trained tech to interpret it. Not always conclusive but it may help.

[dlove]

the chiller report shows R11 as the selected refrigerant. Trane did not offer R11 in the chillers with the refrigerant pump...unless this chiller was not setup properly.

i also see several things not installed...
bearing temperature sensors
safety starter inputs
purge

these are pretty basic items that should have been installed

why is the atmospheric pressure set to 12.8 psia?

Nuclrchiller and jayguy you are correct no pump. Not sure about the atmospheric pressure set, but i will add it to my list of questions. what should it be?