Better Water LLC; rev. Jul 2019
Page 64 of 80
PB2
– Mediport Portable RO Operator Manual
TECHNICAL SERVICE BULLETIN
PB2 Water Quality Monitor Adjustment to Alarm on %-
Rejection for Nuisance Alarms
TSB#
TSB2012003
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
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.
Summary of Contents for EQROPB01600
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