Regulating The Pilot Flame; Troubleshooting Guide - Renfert Bijou 90 Mode D'emploi

4. Handling
The laboratory burner does not have a closed posi-
EN
tion!
The flame of the Bijou 90 can be preselected by
means of the gas lever. The play in the control
elements is intentional. It results from the prescribed
decoupling of valve and control element.
This guarantees that the valve is always activated
under identical conditions, which is essential for oper-
ational safety.
A
Position A:
Ignition or pilot flame burns
Position B:
Main flame and ignition flame burn
Position C:
Main flame burns
When selecting positions A and C the gas lever must
always be moved all the way to the limit stop so that,
firstly, the position is quickly and unambiguously
identifiable if the burner goes out and, secondly, to
prevent any possibility of flashback to the burner's jet.
4.1 Regulating the main flame
The burner's main flame can be regulated by simply
turning the knurled ring on the main burner tube.
A smooth flame is produced by turning the knurled
ring upwards. The air feed is reduced and the flame
becomes smooth.
A harsh flame is produced by turning the knurled
ring downwards. The air feed is increased and the
flame becomes harsh.

5. Troubleshooting Guide

Fault
If the burner will not
light in spite of the gas
shutoff valve being
open and no gas is
heard escaping.
If the burner will not
light even though there
is a loud noise of es-
caping gas.
If there is a smell of
gas when the burner is
alight.
B
C
Cause
• Central gas supply has not been
turned on / gas bottle is empty.
• Jets are blocked or dirty.
• Strong draught in the area of the
burner.
• Incorrect type of gas or supply
pressure.
• Connections are leaking.
• Burner is leaking.

4.2 Regulating the pilot flame

A smooth flame, which burns very stably, is pro-
duced by pushing the sleeve over the air-feed holes
of the small burner tube.
A harsh flame, which is, however, more easily ex-
tinguished, is produced by pushing the sleeve away
from the air-feed holes of the small burner tube.
The ignition flame should be as stable, and there-
fore as smooth, as possible in order to ensure
reliable burner operation. Adjust the flame so that
it cannot be extinguished unintentionally.
4.3 Adjusting the burner position
The burner can be positioned at three different an-
gles:
To adjust the burner to the angle which suits you
best, simply lift it out of its base and reinsert in the re-
quired position. The burner is thus equally well suited
for left-handed and right-handed users.
The burner should not be used in the 90°
position when working with wax, since drip-
ping wax may block the jets and cause the
burner to malfunction.
Remedy
• Operational error.
• Screw off burner tubes and carefully clean
the jets with a soft cloth.
Do not screw out the jets!
• Eliminate the draught, reposition the burn-
er.
• Check supply pressure and type of gas.
• Check the connections.
• If the burner leaks do not carry out repairs
yourself, send burner for inspection.
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