Unigas HTP90A, Installation, User'S, And Maintenance Manual, Page: 42 / 60

C.I.B. UNIGAS - M039219CA
42
Checking the detection current
To check the detection signal follow the scheme in Fig. 42 or Fig. 43. If the signal is less than the value indicated, check the position of
the detection electrode or detector, the electrical contacts and, if necessary, replace the electrode or the detector.
Check of the detection current (with printed circuit)
Seasonal stop
To stop the burner in the seasonal stop, proceed as follows:
1 turn the burner’s main switch to 0 (Off position)
2 disconnect the power mains
3 close the fuel cock of the supply line
Burner disposal
In case of disposal, follow the instructions according to the laws in force in your country about the “Disposal of materials”.
Fig. 42: Detection by electrode
Fig. 43: Detection by photocell QRA..
To check the detection signal remove the bridge on “TEST ER” or “TEST UV”
and connect a micro ammeter when Fig. 44. If the signal is less than the
value indicated, check the position of the detection electrode or detector, the
electrical contacts (one ER terminal for the electrode, two FC terminals for the
UV probe - see pictureon the side) and, if necessary, replace the electrode or
the UV detector. Fig. 44
TERMINAL BOARD MC
µA DC
27
TERMINAL BOARD
Control box
Minimum detection
signal
Siemens
LFL1.3..
6µA (with electrode)
Siemens
LFL1.3..
70µA (with UV
detector)
Control box
Minimum detection
signal
Siemens LFL1.3..
6µA (with electrode)
Siemens LFL1.3.. 70µA (with UV detector)
ER
FC
+ µA -
- µA +
UV detector electrode