Advertisement
Warning notes
Installation notes
Commissioning notes
Measurement circuit
Service notes
2/4
To avoid injury to persons, damage to property or the environment, the
following warning notes should be observed!
It is not permitted to open, interfere with or modify the flame detector!
• Before performing any wiring changes in the connection area of the QRB..., the
burner control must be completely isolated from the mains supply!
• Ensure protection against electric shock hazard on the detector itself and on all
electrical connections through appropriate mounting!
• Check the wiring and all safety functions!
• Installation and commissioning work may only be carried out by qualified staff!
• Observe the permissible length of the detector cable!
→ Refer to «Technical data»
• Always run the detector cable separate from other cables, especially from the
ignition cable, while observing the greatest possible distances!
• The relevant national safety regulations must be complied with!
• The detector should not be subjected to mechanical shocks!
The intensity of the radiation of light on site is checked by measuring the detector
current.
-
M
QRB...
+
-
A
For the minimum detector current values required, refer to the data sheet of the
respective burner control.
Do not use any burner cleansing sprays.
When cleaning the photoresistive detector, always use a clean cloth.
CC1N7714E
June 14, 1999
23 22
LAL1...
22 23
LAL2/3...
+
12 11
LOA...
Legend
A
Incidence of light
M
DC
microammeter
resistance
Ω
max. 5000
)
Landis & Staefa Division
(internal
Advertisement
