Better Water PB2 User manual

PB2 Water Quality Monitor Adjustment to Alarm on
%-Rejection for Nuisance Alarms
TSB 2012003
Created/Last Revised Date
04/27/12
Last Reviewed Date
04/27/12
Page 1 of 3
ISSUE
On occasion feed water quality changes for various reasons. This is sometimes due municipalities changing
water sources, modifying pretreatment, or construction and repair to main water lines. These can cause erratic
feed TDS changes and fluctuating pH.
The PB2 is set at the factory to alarm on %-Rejection. In this setting the water quality is more prone to a
nuisance alarm due to the above mentioned changes in feed water quality. The PB2 can alternately be set to
allow the alarm set-point to be set on Product TDS instead of %-Rejection.
SOLUTION
PRE-CHANGE VERIFICATION
1. Verify the feed and product TDS values displayed on the Water Quality Monitor with a hand-held TDS meter.
- If out of calibration see the Operators Manual for the calibration procedure. This manual is available online and
can be downloaded from www.betterwater.com/support.
DIPSWITCH CHANGE
1. Turn the device OFF.
2. Unplug from the electrical receptacle
3. Open the External Top Panel and the
remove the cover from the internal Control
Box and locate the control board containing
the…
… block of two Dipswitches…
…the CAL-UP and CAL-DOWN buttons
TECHNICAL SERVICE BULLETIN
View from
the BACK of
the PB2
WARNING
1. ELECTRICAL HAZARD: Be careful where and what is touched when making the changes described
below inside the internal control box.
2. The following changes should not be done while a hemodialysis treatment is being performed.

PB2 Water Quality Monitor Adjustment to Alarm on
%-Rejection for Nuisance Alarms
TSB 2012003
Created/Last Revised Date
04/27/12
Last Reviewed Date
04/27/12
Page 2 of 3
4. The Left Dipswitch is labeled: OFF:PROD
ON:%REJ
- The factory setting is on: %REJ, with the position of
the dipswitch pushed down or in toward the board.
- The Right Dipswitch is labeled: OFF:µS
ON:PPM
- The factory setting is on: PPM, with the position of
the dipswitch pushed down or in toward the board.
5. Pull the Left Dipswitch up or toward the top back to set to OFF: PROD.
6. Plug the device back into the electrical receptacle and turn the device ON.
WATER QUALITY MONITOR ALARM SET-POINT CHANGE:
1. Monitor product TDS over a 15 minute period and periodically record several of the product values.
2. Average the recorded product values and then multiply by 4
- example: if the average product TDS=5.2 ppm
5.2 ppm x 4 = 20.8 ppm
round to the nearest whole number, so the new alarm set-point will be 21 ppm
3. On the Water Quality Monitor on the front of the PB2,
push the MODE switch button
until the SET-POINT yellow-light illuminates.
- The current Set-Point will display.
- The default set-point is 50 ppm.
4. Locate the CAL-UP and CAL-DOWN buttons on the Water Quality Monitor board
inside the open Control Panel.
5. Change the set-point by pushing the CAL-UP or CAL-DOWN buttons until the desired set-point is displayed
on the Water Quality Monitor display.
6. On the Water Quality Monitor on the front of the PB2, push the MODE SWITCH button until CAL is displayed.
7. Continue pressing the MODE SWITCH button to scroll through the different modes until the SET-POINT
yellow-light is illuminated, then verify that the correct set-point is displayed.

PB2 Water Quality Monitor Adjustment to Alarm on
%-Rejection for Nuisance Alarms
TSB 2012003
Created/Last Revised Date
04/27/12
Last Reviewed Date
04/27/12
Page 3 of 3
8. Replace the cover on the internal Control Box, and close the outer External Top Panel cover.
NOTE: This same product set-point procedure applies if the Water Quality Monitor's Right Dipswitch is set to
OFF:µS which will display in micro Siemens rather than parts-per-million if the switch is set to ON:PPM.