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Conair
MPA, MPW
manual
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MPA
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Troubleshooting
Specifications
Install
Parts/Diagrams
Shut Down Alarms
Connecting Main Power Supply
Maintenance
Dip switch Configuration
Cause of a Problem
Resetting Overloads
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Contents
Page
Date Manual Number UGH004/0999 Serial numbers Model numbers
Table of Contents
Introduction
Troubleshooting
Introduction
Your Responsibility AS a User
Purpose User Guide
HOW Guide is Organized
Read this SO no ONE Gets Hurt
Page
Description
Typical Applications
What is the Microkool
CHILLER?
HOW IT Works Water Cooled
HOW IT Works AIR Cooled
Features
High Efficiency Compressors
Specifications MPW Water Cooled
Psi Pressure
Specifications MPA AIR Cooled
MPA-5
Freezing Points of Aqueous Ethylene Glycol Solutions
Freeze Protection Requirements
Installation
MicroKool Portable Chillers come fully assembled
Unpacking
Boxes
Install plumbing for process and cooling lines
Preparing for Installation
Make sure the installation area provides
Connecting Process Water Supply Lines
Install pipe to the rear of the chiller
Remove the shipping pipe plug from the female
Coat the pipe threads with thread sealant
Connecting Main Power Supply
Open the unit’s electrical enclosure
Testing the Installation
Apply power to the unit
Turn on the condenser water supply MPW
Units and check for leaks. If any leaks appear, stop
Entering Setpoint Deviation Parameters
Initial Setup
Dip switch Configuration
Changing Temperature Units
Open the electrical enclosure Change Dip Switch 1 to
Disconnect and lock out main power to the unit
Open the electrical enclosure Set dip switch 3 to on
Select a new passcode using
Setpoint adjustment buttons
Follow Steps 1 through 5
Press the RUN button to save the passcode
Open the electrical
Selecting Temperature Control Point
Select a new control point using the Display button
Set dip switch 5 to
Press the RUN button to save the control point
Installing Auto Start Feature
Insert the two power leads from the device
To disable Auto Start
Set dip switch 4 to the on position
When Auto Start is enabled
Apply power to the chiller Enter the passcode, if necessary
Activating SPI Communication
Connect the host machine to the chiller
Enter the node address
Operation
PC-1 Control Features
Setpoint display
PC-2 Control Features
Pumpdown On/Off
Positioning Control Panel
To raise and swivel the control panel
To lower the control panel
To detach the PC-2 control panel
Entering a Passcode
Press Setpoint to select the parameter you want to change
Starting the Chiller
Enter the passcode
Using Pumpdown Feature
Stopping the Chiller
To shut down the unit Press Stop
Press Button to turn on Pumpdown
Performing AN Auto Tune
Insufficient setpoint/process deviation
Page
Maintenance
Preventative Maintenance Schedule
Inspect power cords, wires and electrical connections
Quarterly every 3 months
Cleaning Evaporators
Cleaning Condensers
To fill the reservoir
Refilling the Tank
Locate the fill port at Back of the chiller
Checking Refrigerant Charge
If the charge is low, recharge the system
Set dip switches 3
Performing System Tests
Press To shut down the chiller
Then open the electrical enclosure
KEY/DISPLAY Test
Input Test
Connect all inputs to the system
Press any key to display the first test menus
Select the Input Test menu
Select the Output Test menu
Output Test
Connect all outputs to the system
Save changes and exit the output menu
Select the OM Enable/Disable menu
Disabling or Enabling Output Monitors
Calibrating Temperature Sensors
Release the Setpoint key
Exit Calibration Mode
Press the up key to begin calibrating
Wait until the control displays don or bad
Press Select
Exit the Operating Hours Log
Logging Operating Hours
Index through test menus to the operating log
Troubleshooting
Before Beginning
FEW Words
Verify that you have manuals for other equip
Messages shown on the control panel. These
HOW to Identify
Cause of a Problem
Supplied to the pump
Motor?
Is the required water flow
Greater than the pump’s
Is the thermocouple
Loose?
Ply wire leads become
Level Switch fuse Has the indicated device
Has one of the main sup
Disconnected?
Compressor
Shut Down Alarms
Refrigerant pressure is either too low or too high
All models
Air-cooled units
Is the freezestat setting
Installed correctly?
Freeze Stat Input is open Is there sufficient fluid
Flow through he evapora
Is something wrong with
Cable?
System Alarms
Chiller Will not Power UP
Checking Replacing Fuses
If fuses continue to fail
On the front panel counterclockwise to open
Replace the fuse. The fuses are located on the mother
Locate the pump overload module attached
Resetting Overloads
Check the overload
Replacing the Motherboard
Remove and discard the old contactor
Reverse this procedure to install the new con
Replacing Compressor Contactor
Checking Unloader Valve
Replacing the Freezestat
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Appendix A-2
SPI Commands Supported by Conair Microkool
SPI Command Pairs
SPI Status Words
Status, Process
Status, Machine
Appendix B-4
PARTS/DIAGRAMS
PD-2
PD-3
PD-4
PD-5
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