TeHa BR1000 ECO PLUS, Руководство пользователя

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17
1. Basic information regarding the misbehavior of combustion chambers.
The misbehaviour of combustion chambers becomes noticeable by a few measurable indications most of the times.
These are:
Exhaust temperatures out of the normal range. (>200°C).
Temperature of the outer casing out of the norm range (>60°C).
Smoke appearance is bad, cannot be adjusted (>1)
Water temperature at the outlet is deviating from the norm.
The oil pump pressure is not within the rated range and varies (step1=8-11bar, step2=10-14bar.).
The service engineer needs the following basic equipment to check these values:
Smoke analyser, electronic thermometer (measuring range 0 – 500°C), with one flue gas sound each and a
contact sensor, oil pressure gauge, joint thread G1/8″ AG, measuring range 0 – 20 bar.
2. General requirements for starting.
The following fundamental requirements have to be fulfilled before each start:
110 / 230 V input voltage
: existing
On-switch : on
Digital thermostat : on
Temperature limiting safety device
(reset button at the right side of the
switch box below the black cap)
: on
Water inflow : on
Water pump : on, minimum quantity of water 6 Ltr / min / combustion chamber
Fuel : available
2.1 Combustion chamber with flame control
The indications of the items 2.2 refer to this circuit diagram
2.1.1 Burner does not start, no fault message (red lamp out)
Have the requirements as mentioned under item 2 been fulfilled?
Check the safety fuse F1.
Is there voltage at clamp No. 5, operating instructions page 14?
Yes : Check the all-or-nothing relay K1 (bypass for the test, if necessary)
No : Check all switches 1 – 4. Check the position of the overload in case of failure of the contactor (item 3).
The cut-off-point is indicated on a scale at the housing of the contactor.
The cut-off- point can be changed by adjustment of the reed contact.
2.1.2 The burner does not start, ventilator starts for a moment, followed by a fault message (red lamp on).
Does the magnetic valve open?
Does the ignition transformer work?
Are the ignition cables and the spark plug socket okay?
Are the igniting electrodes okay? Check the wires for electrode consumption and the ceramic fro cracks!
Is the adjustment of the electrodes correct?
See drawing MIEIRI/3, operation instructions page 13!
Is the mixing device free from soot and correctly adjusted?
Does the oil pump produce suffient and stable pressure?
Fix the pressure gauge: the oil pressure has to be: step1 between 8 and 11 bar and step2 between 10 and 14bar.
The indicator of the gauge must remain stable. A leakage exists in the suction- or pressure pipe,
if the indicator flutters. Consequence: starting problems, unclean combustion.
Does the photocell work?
Remove the photocell from its holder, disconnect both connections and meter the voltage by means of a
microammeter and with light (day light or artificial source of light)
The photocell is defective if the voltage is lower than 5μA and thus has to be replaced with a new one.