12
DAX 3F-I
Troubleshooting
The control unit gives a “Fault” signal for the detector :
• Check wiring and connections.
• Possible defect in sensing head connection (APC terminal block).
• The sensor inside the sensing head may be disconnected or out of order.
The detector gives a non-zero measure :
• There may be gas in the atmosphere.
The detector gives a non-zero measure even though no gas is present in the atmosphere :
• Perform full calibration of the detector.
The detector measure is either too high or too low :
• Perform full calibration of the detector.
The detector gives a null measure although gas is present in the atmosphere :
• Check wiring and connections.
• Check if sintered metal filter is not blocked by dust.
• If sintered metal filter pollution is detected, replace both filter and sensor and perform full cali
-
bration.
Spare parts
Article code
Bracket - mounting kit
B O I 0 0 0 0 0 1 4 8
Cable gland - Ex e M20 (6 - 12 mm) - BRASS
P R E 0 0 0 0 0 0 2 9
Cable gland - Ex e M20 (6 - 12 mm) - STAINLESS STEEL
P R E 0 0 0 0 0 0 3 7
Instruction manual
I M P 0 0 0 0 0 0 4 4
Junction box - Ex e
B O I 0 0 0 0 0 1 9 6
Nut - M20 metallic
P R E 0 0 0 0 0 0 2 2
O-ring for cable gland
M E C 0 0 0 0 0 0 1 2
O-ring for sensing head
M E C 0 0 0 0 0 0 4 0
Screw - M4 x 6 mm
V I S V I S 0 0 0 4 2
Sensing head - FPH02 + DAL17
D E T 0 0 0 0 0 0 2 1
Sensing head - FPH02 + DAL21
D E T 0 0 0 0 0 0 2 2
Sensing head - FPH02 + DAL-AC (acetylene)
D E T 0 0 0 0 0 0 2 8
Sensor - DAL17
B A S D E T 0 0 0 2 0
Sensor - DAL21
B A S D E T 0 0 0 3 3
Sensor - DAL-AC (acetylene)
B A S D E T 0 0 0 3 0
Sensor sleeve
M E C 0 0 0 0 0 0 2 8
Sintered metal filter
M E C 0 0 0 0 0 0 1 0
Spanner for sensing head top
O U T 0 0 0 0 0 1 1 3
Terminal block - Ex e 3p
B O R 0 0 0 0 0 0 8 9
Terminal block for earthing - Ex e
B O R 0 0 0 0 0 0 9 1
