Possible Causes Of Faults; Cleaning The Surfaces; Technical Data - Dennerle Profi-Line Evolution DeLuxe Operating Instructions Manual

15.3 Possible causes of faults

Fault
Calibration not possible or The electrode is in pH 7 (pH 4) calibration solution,
"Err" appears on display
"F 01" appears on display Electrode cable not connected properly
No supply of CO although Problem with CO
2
indicator lamp for
CO -supply is ON
2
Display blank

16 Cleaning the surfaces

Use a moist cloth and a mild detergent. Do not use any aggressive detergents or solvents!

17 Technical data

Mains voltage/mains frequency:
Wattage:
Output for solenoid valve:
Length of mains lead:
Length of connecting lead:
Length of electrode cable:
Electrode connection:
Connection for connecting cable:
Measuring range:
Setting range:
Switching values (hysteresis):
Splash-proof in accordance with IPX4
CE
33
Cause
but the "pH 4" ("pH 7") key has been pressed
Calibrating solutions are contaminated/too old
pH-electrode soiled
pH-electrode worn out or defective
Electrode cable defective
Measured value outside of measuring range
supply
2
Solenoid valve not connected
properly or defective
Fuse defective
Controller defective
230 V~ / 50 Hz
2 W + connected solenoid valve (max. 40 W)
230 V~, max. 40 W / 0.2 AT
3 m
3 m
3 m
BNC
SUB-d, 9-polig
pH 3 - 9
pH 5.0 - pH 8.8
Set value +/- 0.1
Remedy
Repeat calibration procedure, beginning with pH 7
Use fresh calibrating solutions,
repeat calibration
Clean pH-electrode (see 6.1).
Connect new pH-electrode and calibrate;
carry out additional calibration after 1 week
Check connection
Replace electrode
---
Check CO2 system (e.g. cylinder empty? Needle
valve closed? Hose connection leaking?)
Check connection, replace solenoid valve if
necessary
See Point 14.1
Send controller in to Dennerle after-sales
service for inspection.