Better Water PB2 Instructions
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Better Water PB2 Instructions

Water quality monitor adjustment to alarm on rejection for nuisance alarms
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PB2 Water Quality Monitor Adjustment to Alarm on
%-Rejection for Nuisance Alarms
Created/Last Revised Date
04/27/12

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.
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.

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
Last Reviewed Date
04/27/12
TECHNICAL SERVICE BULLETIN
WARNING
View from
the BACK of
the PB2
TSB 2012003
Page 1 of 3

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Summary of Contents for Better Water PB2

  • Page 1 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.
  • Page 2 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...
  • Page 3 TSB 2012003 PB2 Water Quality Monitor Adjustment to Alarm on %-Rejection for Nuisance Alarms Created/Last Revised Date Last Reviewed Date Page 3 of 3 04/27/12 04/27/12 8. Replace the cover on the internal Control Box, and close the outer External Top Panel cover.

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