MED Associates ENV-597 User manual

instrumentation and software for research
WATER MAZE POOL HEATER
ENV-597
USER’S MANUAL
DOC-213
Rev. 1.2
Copyright ©2013
All Rights Reserved
Med Associates Inc.
P.O. Box 319
St. Albans, Vermont 05478
Phone: [phone]
Fax: [phone]
www.med-associates.com

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DOC-213 Rev 1.2 Copyright © 2013
MED Associates, Inc.
notes

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DOC-213 Rev 1.2 Copyright © 2013
MED Associates, Inc.
Table of Contents
Chapter 1 | Introduction................................................................................................1
Warnings ........................................................................................................................................ 1
Chapter 2 | thermostat settings...................................................................................2
Setting the Temperature.............................................................................................................. 2
Changing to ˚F .............................................................................................................................. 2
Changing to ˚C.............................................................................................................................. 3
Appendix A | Factory Settings ......................................................................................4
Appendix B | Contact Information...............................................................................4

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CHAPTER 1 | INTRODUCTION
The ENV-597 Water Maze Pool Heater is intended to be used to maintain a constant
temperature in either the mouse- or rat-sized pools. The heater will arrive installed in the water
maze pool configured for ˚C display. The user will set their desired pool temperature. This
manual should be carefully read prior to operating the heater.
Figure 1.1 –Water Maze Pool Heater
Warnings
Note: Failure to comply with the following actions will result in heater failure and possible
equipment damage, injury or fire.
1. Place the heater controller in a dry location. Moisture in the controller will cause failure.
2. Do not operate the heater when it is out of the water or in low water. An exposed heater
is a potential fire hazard.
3. Allow the heater to cool for 20 minutes before removing it from the pool.
4. Protect the heater from power surges by having the properly sized circuit breaker or inline
fuse. See label on heater controller.
5. Be sure the thermostat sensor is immersed in water and positioned away from the heater
element.

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CHAPTER 2 | THERMOSTAT SETTINGS
Setting the Temperat ure
In order to set the temperature, or make other settings changes, remove the four Phillips screws
from the corners of the clear protective cover to gain access to the keypad. Be sure your work
area is clean and dry before removing the cover.
The upper red display labeled PV (present value) is the current temperature of the water. The
lower green display labeled SV (set value) is your desired temperature.
To adjust the SV (set value):
1.) Press and release the SET button once, the display will now illuminate all four digits of
the green SV display. The “ones” digit will be highlighted and active.
2.) Press the ^or ˅keys to increase or decrease the temperature in increments of 1˚C.
3.) Press the <r/s key and use the ^or ˅keys to increase or decrease the temperature in
increments of 10˚C.
4.) Repeat step 3 if you need to adjust the “hundreds” digit value.
5.) Press and release the SET key to exit
6.) Replace the clear protective cover
Changing to ˚F
In order to change the temperature display to ˚F:
1.) Press and hold the SET button until the top red display reads Aru.
2.) Press and release the SET button three times until the top red display reads LCK. The
bottom green display should read 0011 indicating the settings menu is locked.
3.) Use the <r/s and ^and ˅keys to change the LCK value to 1000 and then press the SET
key. The settings menu is now unlocked and changes can be made.
4.) Press and hold the SET key to exit this menu.
5.) Press and hold the SET and <r/s keys simultaneously until the top red display reads Cod.
6.) Press the SET key two times until the top red display reads SL2
7.) Use the <r/s and ^and ˅ keys to adjust the value of SL2 to 0001
8.) Press the SET key
9.) Press and hold SET and <r/s simultaneously to exit the Cod menu
10.)Repeat steps 1-4 to change the LCK value back to 0011 to prevent unwanted settings
changes
11.)Replace the clear protective cover

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Changing to ˚C
In order to change the temperature display to ˚C:
1.) Press and hold the SET button until the top red display reads Aru.
2.) Press and release the SET button three times until the top red display reads LCK. The
bottom green display should read 0011 indicating the settings menu is locked.
3.) Use the <r/s and ^and ˅keys to change the LCK value to 1000 and then press the SET
key. The settings menu is now unlocked and changes can be made.
4.) Press and hold the SET key to exit this menu.
5.) Press and hold the SET and <r/s keys simultaneously until the top red display reads Cod.
6.) Press the SETkey two times until the top red display reads SL2
7.) Use the <r/s and ^and ˅ keys to adjust the value of SL2 to 0010
8.) Press the SET key
9.) Press and hold SET and <r/s simultaneously to exit the Cod menu
10.)Repeat steps 1-4 to change the LCK value back to 0011 to prevent unwanted settings
changes
11.)Replace the clear protective cover

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APPENDIX A | FACTORY SETTINGS
The menu settings should be as follows:
SL1 = 0001 - Thermocouple type J (indicated on power up, default)
SL2 = 0010 - Degrees Celsius (indicated on power up, default). 0001 = Fahrenheit
SL3 = 0000 –Not used
SL4 = 0000 –Not used
SL5 = 0000 –Not used
SL6 = 0001 –Heat on (default). 0000 = Heat off.
SL7 = 0000 –Not used
SL8 = 0000 –Not used
SL9 = 0000 –Not used
Aru = 0
P= 0
Pb = 0
LCK = 0011 –Settings locked (default). 1000 = Unlocked
APPENDIX B | CONTACT INFORMATION
Please contact MED Associates, Inc. for information regarding any of our products.
Visit our website at www.med-associates.com for contact information.
For technical questions, email [e-mail].