Sera PRECISION seramic pH Controller Manual De Instrucciones página 19

Problem
CO consumption too high
2
Electrode shows discoloration
inside the shaft
Fish are below surface and breath-
ing heavily or swimming abnormally
through the water
10. Technical Data
seramic pH Controller:
Case protected against water splashing *
pH control unit with user guided calibration
Supply voltage
optionally
Total operating energy input 2 VA (Watts)
Measurement precision
Measuring range (pH value)
Control range (pH value)
Switching delay
Display
Input resistance
of electrode
sera CO solenoid valve:
2
Total operating energy input 1.6 VA (Watts)
Max. Pressure load
Ambient temperature
Hose connector
Switchable socket:
Switching capacity max.
max. load
* The socket for connecting the pH electrode (electrode plug) is
not moisture proof. Exposing this socket to moisture may
cause incorrect pH measuring values. This may lead to uncon-
trolled CO release into the aquarium.
2
Possible cause
Too strong aeration of the aquari-
um, no cover
Tightening nut at adjustment wheel
of sera CO pressure reducer has
2
become loose
Threaded screw of pressure reducer
was over-tightened (display reads in
the RED area). Safety valve opens,
and CO escapes with a hissing
2
sound
Electrode has been contaminated
by other chemicals or medications
CO gas having escaped from the
2
water is trapped below aquarium
cover
pH value is too low in relation to
the carbonate hardness
Filter is not functioning properly
Aquarium water is heavily burdened Carry out a partial water change
230 V/50 – 60 Hz
115 V/50 Hz; 110 V/60 Hz
±0.1 pH units
(at 25°C/77°F)
pH 2 – 12
pH 4 – 9
pH 0 to 2
in steps of 0.01
4 digit LED display
within Giga Ohm range
5.5 bar (80 psi.)
0 – 50°C (32 – 122°F)
4/6 mm (0.16/0.24 in.,
internal/external
diameter)
1,000 W
5A at 250 V~
Troubleshooting
Reduce CO
supply
Fasten tightening nut firmly by
hand. Do not use a wrench!
Loosen threaded screw
immediately. Open outlet valve
(adjustment wheel) to release the
built-up pressure. Close outlet valve
and tighten threaded screw very
slowly, so that operational pressure
is 1 bar (14.5 psi.)
Replace
Provide better air circulation
Carry out a partial water change of
10 – 20%. Adjust to a higher pH
value after
Clean filter
with gravel cleaning
11. Spare parts and accessories:
sera pH measuring electrode
sera CO solenoid valve
2
sera test solution pH 4.0
sera test solution pH 7.0
sera CO hose 4/6
2
sera non-return valve
Disposal of the unit:
Waste electrical and electronic equipment (WEEE)
must not get into domestic waste!
If ever the unit cannot be used anymore, the consumer
is legally obliged to hand in waste electrical and elec-
tronic equipment (WEEE) separately from domestic
waste, e.g. at a collection point of his community/his
district. This ensures that waste electrical and elec-
tronic equipment (WEEE) is expertly processed and
that negative effects to the environment are avoided.
Therefore electrical and electronic
equipment bears the following symbol:
19
loss by reducing oxygen
2
(item No. 08921)
(item No. 08030)
(item No. 08916)
(item No. 08923)
(item No. 08022)
(item No. 08818)