Pentair HAFFMANS RPU-352, Instruction Manual, Page: 45 / 112

HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
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RPU 352, RPU 353, RPC 80, RPC 50 Page 45 of 112
16 FREQUENTLY ASKED QUESTIONS
Battery
1) Sometimes the battery charge indicator doesn’t move even though the instrument is
connected to the charger. What’s wrong?
2) When I switch the instrument on it often has less charge in it than when I switched it off.
Why?
3) How long should I leave the instrument connected to the charger?
4) How long will the battery last?
5) How is battery charging controlled?
6) The display tells me that a new battery has been installed. I haven’t fitted a new battery,
what’s going on?
7)
The charge rate shown on the RPC-80 is not the same as that shown on the PU monitor.
Which is correct?
Controls
8) Which switches control the display backlight?
ONLY FOR PRU-353:
9) Why can’t I zero the pressure channel? The message tells me that “error is too great”.
Results
10) If the product temperature is exactly equal to the cut-off temperature will any PU’s be
achieved?
11) The PU value displayed by the RPU-352, PRU-353is not the same as that printed for the
same run by the RPC-80. Why?
ONLY FOR PRU-353:
12) The maximum pressure value displayed by the PRU-353 is lower than that printed for
the same run by the RPC-80. Why?
13) Why is the file start time shown on the display of the RPU-352, PRU-353almost an hour
different from the start time in the results printed by my PC?
14) Why is the exit temperature sometimes not included in the results?
15) Why doesn’t the date and time of my file appear on the display of the PU monitor? It
appears correctly on the printed results from my PC.
16.1 BATTERY AND BATTERY CHARGING
1) Sometimes the battery charge indicator doesn’t move even though the instrument is
connected to the charger. What’s wrong?
Nothing’s wrong. When the battery is too hot to charge more quickly the charge rate is lowered
to the “trickle” charge rate which has to be set to a low level so that charging conditions are
safe. If the instrument is very hot then no charging is possible. When the instrument has cooled
down the charge rate will increase and refill the battery. The heat may have come from outside,
for example from the pasteuriser or from inside from the process of charging the battery itself.
When the battery is full it will also stop charging although the instrument will occasionally
increase the charge rate to “trickle” to make up for any gradual losses. The battery is quickly
refilled and charging stops again. This cycle repeats as long as the instrument is connected to
the charger. Do not leave the battery on charge continuously for more than 24 hours.
If there are no recorded files then the main battery display will show all the charging information
including the reason why the battery is not charging.