EUTECH INSTRUMENTS CYBERSCAN DO 1500 DO METER Instrukcja Obsługi Pobierz pdf (Strona 47)

Instruction Manual DO 300

10 TROUBLE SHOOTING GUIDE

Problem Cause Solution

No display when

turned on

a) Batteries not in place

b) Batteries not in correct polarity (+

and – position).

c) Weak batteries

a) Check that batteries are in place

and making good contact.

b) Re-insert batteries with correct

polarity.

c) Replace batteries.

Unstable readings a) Insufficient electrolyte in probe.

b) Air bubbles trapped around the

probe.

c) Dirty probe.

d) Probe not deep enough in

sample.

e) External noise pickup or induction

caused by nearby electric motor.

f) Broken probe.

a) Fill probe with electrolyte &

replace membrane. See page x.

b) Tap probe to remove bubbles.

c) Clean the probe and re-

calibrate.

d) Make sure sample entirely

covers the probe sensors.

e) Move or switch off interfering

motor.

f) Replace probe.

Slow response a) Dirty / Oily probe. a) Clean probe. See Section 9

“Probe Care & Maintenance”.

Not responding to

key press

a) HOLD mode in operation.

b) Damaged key pad.

c) Internal program error.

a) Cancel HOLD mode.

b) Return to dealer.

c) Reset all internal programs by

reinserting batteries.

“OR” or “UR” on

upper display

a) Probe is shorted.

b) Probe is in out-of-range (OR) or

under range (UR) condition.

d) Broken probe.

a) Test probe. Make sure probe is

fully connected to meter.

b) Use different solution.

d) Replace probe. See Accessories

section.

Temperature

reading erratic or

lower display reads

“OR”

a) Temperature of solution is out of

range.

a) Heat or cool solution.

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