Renfert Bijou 90 Series User manual

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Bijou 90
No. 960-0000 F / 961-0000 N (H) / 961-0001 N (L)
21-7417 0409 A Ideen für die Dentaltechnik

You have purchased a brand product from
Renfert. To ensure that you enjoy using this
product for many years, please follow these
instructions carefully.
1. Description /
Applications
The Bijou Burner 90 (F = propane, N =
natural gas) is a very stable laboratory bur-
ner with easily adjustable working position
and the option of operation with pilot flame
or ignition flame.
The burner is supplied in the following
versions:
No. 960-0000 F
>>> burner for propane
No. 961-0000 N (H)
>>> burner for natural gas E
No. 961-0001 N (L)
>>> burner for natural gas LL
Please note:
Old New
natural gas N (H) natural gas E
natural gas N (L) natural gas LL
The burner is type-tested and approved by
the DVGW (German Association of Gas and
Water Installers).
Type: GH-100-011,
Reg.No. NG-2211AO0737
(93.01e044)
2. Installation / Operation
The burner may only be installed by qualified
staff in accordance with the DVGW
regulations.
1. Insert and fix the gas lever supplied with
the burner into the screw thread hole on
the burner‘s operating element.
2. Check whether the type of gas and ope-
rating pressure required for the burner
are compatible with your gas supply.
3. Inspect the connection pipe to ensure it is
correctly fitted and in perfect condition.
4. Shut off the gas tap on the laboratory
bench.
5. Push the gas hose (DIN 30664) onto the
inlet nozzle of the Bijou Burner right up
to the last groove. If necessary, secure
the tube with a clip or circular spring to
prevent it slipping off
(see DVGW worksheet G 621).
6. Adjust the Bijou Burner‘s gas lever to po-
sition A and open the shutoff valve on the
laboratory bench. You should now clearly
hear gas flowing out. Carefully ignite the
burner from the side. Regulate the flame
as described in point 4. (Handling).
3. Areas of Caution
• The burner should not be used in areas
where there is a strong draught, as this
may cause the flame to be
extinguished unintentionally.
• Laboratory burners must only be used
under constant supervision. After
finishing work, the gas supply to the
burner must be shut off (shutoff valve,
disconnection from the gas main).
• When used in classrooms, laboratory
burners may only be put into operation
after first switching on the upstream
shutoff devices, such as central
shutoff for the entire room, group
shutoff device and shutoff valve.
• For installation and operation of gas
systems in labs and science lecture
rooms the regulations in the DVGW
Worksheet G621 (German regulations)
must be heeded.
• After use, the gas supply should be
shut off immediately via the shutoff
valve, or, by separating the gas
connection safety valve.
• If there is a strong smell of gas, close
the gas shutoff valve immediately and
take safety precautions
(see DVGW regulations).
Bijou 90
No. 960-0000 F / 961-0000 N (H) / 961-0001 N (L)
ENGLISH

• Always observe the accident prevention
regulations of the relevant employer‘s
liability insurers.
• Never use water or compressed air to
rinse or blow out burners!
3.1 Exclusion of liability
Renfert GmbH rejects any claims for
compensation as well as warranty claims in
case of:
• the product is used for any other purpose
than those mentioned in the instruction
manual
• the product is changed or amended in
any way beyond those mentioned in the
instruction manual
• the product is repaired by a non-autho-
rized party or the product is not fitted with
original Renfert replacement parts
• the product is used continuously
despite visible safety faults
4. Handling
The laboratory burner does not have a closed
position!
The flame of the Bijou Burner 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
operational safety.
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 knur-
led ring downwards. The air feed is increased
and the flame becomes harsh.
4.2 Regulating the pilot flame
A smooth flame, which burns very stably, is
produced by pushing the sleeve over the air-
feed holes of the small burner tube.
A harsh flame, which is, however, more easily
extinguished, is produced by pushing the slee-
ve away from the air-feed holes of the small
burner tube.
The ignition flame should be as stable, and
therefore as smooth, as possible in order
to ensure reliable burner operation. Adjust
the flame so that it cannot be extinguished
unintentionally.
C
B
A

4.3 Adjusting the burner
position
The burner can be positioned at three
different angles:
60° 90° 120°
To adjust the burner to the angle which suits
you best, simply lift it out of its base and reinsert
in the required 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 dripping wax may block the
jets and cause the burner to mal-
function.
5. Troubleshooting Guide
Fault Cause Remedy
If the burner will
not light in spite
of the gas shutoff
valve being open
and no gas is heard
escaping.
• Central gas supply has not
been turned on / gas bottle is
empty.
• Jets are blocked or dirty.
• Operational error.
• Screw off burner tubes and carefully
clean the jets with a soft cloth.
Do not screw out the jets!
If the burner will not
light even though
there is a loud noise
of escaping gas.
• Strong draught in the area of
the burner.
• Incorrect type of gas or
supply pressure.
• Eliminate the draught, reposition the
burner.
• Check supply pressure and type of
gas.
If there is a smell of
gas when the burner
is alight.
• Connections are leaking.
• Burner is leaking.
• Check the connections.
• If the burner leaks do not carry out
repairs yourself, send burner for
inspection.

6. Cleaning / Maintenance
The Bijou Burner requires no maintenance.
From time to time the burner should be
cleaned. Please observe the following
cleaning instructions:
Never use water or compressed air
to rinse or blow out burners! This
could flush out / blow out the sealant
grease causing the burner to leak.
1. The maximum temperature for cleaning is
50oC (122ºF).
2. Do not use cleaning agents because of the
risk of chemical reaction.
3. To clean the valve only use a duster or
moist leather
(must not be dripping wet)!
4. To clean the burner close the shutoff valve,
pull the hose off the burner and wipe the
burner clean with a cloth or
leather. The burner tubes can be
screwed off and cleaned separately.
5. Do not dismantle the burner!
6. Never drill out the burner jets.
7. Do not blow out the burner‘s inlet nozzle
with compressed air. This could blow away
the sealing grease and cause the burner to
leak.
8. The burner jets must not be screwed out
for cleaning. The burner could start to leak
and safe use is no longer
guaranteed.
If the burner nozzle becomes
plugged, disassemble the tubes than
hold the burner with the nozzle fa-
cing down. Use a hair dryer or other
device generating hot air, melt the
wax plug and allow the molten wax
to completely run out. If this method
fails to clean the nozzle, it must be
either cleaned or replaced by an
authorized technician.
7. Switching to a different
type of gas
The Bijou 90 conforms with the regulations set
out in DIN 30665 Part 1 and enables a switch
to another type of gas by changing the set of
burner nozzles.
Type of gas and power:
Type of gas
Rated power
Small
nozzle
Large
nozzle Load Load large tube
Load small
tube
Product ref.
mark
Liquid gas
G 30 / 50 mbar D 0.18 mm D 0.34 mm 0.66 kW 0.5 kW 0.16 kW 960 F
Natural gas H
(E) G 20 / 20
mbar
D 0.32 mm D 0.55 mm 0.66 kW 0.49 kW 0.16 kW 961 N
Natural gas L
(LL) G 25 / 20
mbar
D 0.35 mm D 0.61 mm 0.66 kW 0.48 kW 0.16 kW 961 N

The installed nozzles are not marked.
• The natural gas H version is distinguished
with the sticker „Erdgas H“ (Erdgas E).
• The natural gas L version is distinguished
with the sticker „Erdgas L“ (Erdgas LL).
• The liquid gas version is distinguished with
the sticker „Flüssiggas“.
The predetermined lab burner can be switched
over to natural gas H (E), natural gas L (LL) and
liquid gas by changing the set of nozzles and its
respective sticker. The relevant conversion sets
are given in the table above. Each set consists
of a small nozzle, a large nozzle and a sticker
naming the respective type of gas. The conver-
sion sets are featured in the spare parts list.
The changeover of the nozzles must
only be carried out by
qualified specialists in accordance
with DVGW regulations (German
legislation - check local regulations).
8. Spare Parts
For the order numbers of consumables and
spare parts please refer to the spare parts list at
the end of this manual.
9. Guarantee
All burners are examined carefully by us before
dispatch. Should any malfunctions occur please
send in your burner for repair with a description
of the problem. Do not try and repair the unit
yourself!
The burner’s nozzle and pipe are harmonised
and should not be changed as they will then no
longer comply with regulations. When used pro-
perly Renfert guarantees all parts of the Bijou
90 for 3 years. Parts given to natural wear and
tear are excluded from this guarantee. The gu-
arantee is void for damage caused by misuse,
disregard of the instructions for use, cleaning,
maintenance and connection, for self-repaired
units or repair by untrained personnel, for use
of spare parts from other manufacturers and on
influences outside the normal practice or un-
authorised in the instruction manual. Services
under guarantee do not extend the guarantee.
10. Technical
Specifications
Type
960-0000
F
961-0000
N (H) / (E)
961-0001
N (L) / (LL)
Height 100 to 107 mm
(depending on the angle)
Weight 530 g (with burner base)
Connection
hose As per DIN 30664
Supply
pressure 50 mbar 20 mbar 20 mbar
Consump-
tion 48 g / h 63 l / h 72 l / h
Output 660 W
Mode of
operation Continous operation
Ambient
temperature max. 40ºC (104ºF)
11. Parts supplied
1 burner
1 gas lever set
1 burner base
1 manual
Subject to modification.