Troubleshooting - Hach PHC28101 User Manual

Troubleshooting

Message or symptom
Probe not supported
Connect a probe or probe
requires service
pH reading and/or mV
reading is same for all
solutions
Standard not recognized
error
Note: The probe can be stored in a sample for up to 2 hours if the sample pH is not high.
1. Put the filling-hole cap in the filling hole (refer to
2. Rinse the probe with deionized water. Dry the probe with a lint-free cloth.
3. Fill the probe soaker bottle half full with 2.44 M KCl Electrode Filling Solution.
4. Loosen the soaker bottle cap and put the soaker bottle on the probe.
5. Turn the soaker bottle cap clockwise to tighten the soaker bottle cap.
6. Make sure that the solution in the soaker bottle completely covers the glass bulb and
reference junction holes.
If the glass bulb becomes dry:
1. Soak the probe tip in the 4.01, 7.00 and 10.01 buffers each for 5 minutes.
2. Rinse the probe with deionized water. Blot dry with a lint-free cloth.
3. Calibrate the probe.
Possible cause
Software not updated
HQd meter does not support
®
IntelliCAL probe
Probe not connected properly
Software not updated
Large number of methods stored
on probe
Damaged probe
Soaker bottle not removed
Electrical issue
Soaker bottle not removed
Incorrect or contaminated buffer
solution
Contaminated filling solution
Figure 1
Action
To download the most current version of the software,
refer to the applicable product page on the
manufacturer's website.
Refer to the HQd Series meter manual for specific
instructions for the meter model.
Contact a Technical Support Representative.
Disconnect, then connect the probe. Tighten the locking
nut.
To download the most current version of the software,
refer to the applicable product page on the
manufacturer's website.
Refer to the HQd Series meter manual.
Continue to let the probe connect. Do not disconnect the
probe.
Make sure there is connectivity with another probe or
meter to confirm isolated issue with probe. Contact a
Technical Support Representative.
Remove the soaker bottle.
Contact a Technical Support Representative.
Remove the soaker bottle.
Use fresh buffer solution as specified in the method.
Drain and replace the filling solution with fresh solution.
on page 2).
11