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GRÜN GmbH Spezialmaschinenfabrik, Siegener Str. 81 - 83, D-57234 Wilnsdorf-Niederdielfen Page 2 of 4
Phone:
+49
(0)271–3988-118,
Fax:
+49
(0)271-3988-159;
www.gruen-gm
bh.de; [email protected] [17.06.2009]
PRIMAT DIN 50, 105,
150, 250
Bitumen Boiler
Propane heated
Operation and Maintenance Manual for
2.1.5 Remove burner from the stove. Slightly open burner valve
and ignite gas by means of a propane gas lighter.
2.1.6 Push burner back into the stove as fas as possible, then
open burner valve completely.
2.1.7 In Germany, bitumen boilers with up to 50 l capacity do not
have to be equipped with safety pilot burner and thermo-
static control unit. The temperature of the melting compound
should therefore be checked by means of the dial ther-
mometer and the complete unit should be constantly super-
vised to avoid overheating.
2.2 Boiler with usable capacity of more than 50 l.
2.2.1 GRÜN boilers with a capacity of more than 50 litres are
equipped with a GRÜN automatic control unit.
2.2.2 See para. 2.1.1 to 2.1.4
2.2.3 Burners for bitumen boilers PRIMAT and REKORD DIN are
supplied with an integrated housing with thermometer and
with a control unit, comprising gas regulator valve and igni-
tion safeguard („safety pilot“).
2.2.4 Remove burner from the stove. Press button of the safety
pilot and light pilot burner, keeping the button pressed down
for 20-30 seconds. The pilot burner will now remain burning.
Push burner into the stove as far as possible. The end of the
feeler tube should be in touch with the end of the protective
tube; if required, readjust length of the feeler tube by means
of the hex. head nuts.
2.2.5 Adjust required temperature for the melting compound at the
thermostat regulator, considering also the temperature
range of the thermometer (standard range approx. 160 - 300
° C).
2.2.6 Open burner valve. Main burner will now be lit by the pilot
burner.
2.2.7 When the adjusted temperature is reached, the gas supply
for the main burner will automatically be reduced or stopped.
The safety pilot burner keeps burning and will restart the
main burner again, when the temperature becomes too low.
Note: The automatic control only works while the feeler of
the thermostat is surrounded by liquid bitumen. During the
starting period of operation, the burner has to be regulated
manually.
2.2.8 Should the pilot flame extinguish, the gas supply will be
automatically interrupted. The pilot flame has to be lit again
manually.
2.2.9 Occassionaly counter-check the adjusted temperature with
the temperature which is indicated on the independent ther-
mometer.
3 Finishing work
3.1 When work is finished or interrupted, first close valve of the
gas bottle. Main flame and pilot flame will extinguish as soon
as the remaining gas in the hoses has been used up.
3.2 Close burner valve. The building site must not be left before
all gas valves are closed and leak-proof.
3.3 If several gas bottles have been used in line, every single
valve has to be closed.
4 Maintenance
4.1 All components, which are in contact with gas, should be
protected against mechanical and heat damages. They should
be regularly checked.
4.2 Gas-leading components - especially hoses, connections,
valves and nozzles - should be protected against soiling; if re-
quired, they have to be cleaned:
a) Cleaning of the main filter in the hose connection of the
control unit (procedure is required, if pollution is visible or if
burner output becomes lower):
Screw off gas hoses (turn hose nut clockwise) and remove dirt
in front of the filter with a brush or with compressed air. If
heavily polluted, screw out main filter with a screw driver (7
mm, clockwise); blow through with compressed air or rinse
with solvent; if required, replace filter.
When fitting it again, tighten moderately.
b) Cleaning of the burner nozzle with integrated filter: Remove
safety pilot burner and screw off burner head with connecting
hose. Screw out nozzle with a spanner (anti-clockwise). Clean
or replace nozzle with filter insert.
4.3 Keep air funnels for primary and secondary air clean (for main
and pilot burner).
4.4 Keep exhaust funnels clean and take care, that they will not
be distorted.
4.5 Clean melting container regularly from bitumen residues and
check inner boiler for damages.
4.6 Keep temperature sensor of thermometer and of thermostat
free from bitumen residues to secure undisturbed transmis-
sion of the temperature values.
4.7 Immediately remove overflow of bitumen from the boiler.
5 Trouble shooting
5.1 Should bitumen start to burn: Close container lid and valves.
Smother the flames. Extinguish fire with a foam fire extin-
guisher.
5.2 Technical fault of the burner unit: Close gas bottle valve. See
para. 4. 1. to 4.6.
Addendum to point 2.2. (2009-03-04)
The bitumen boiler is equipped with an additional thermostat.
In case of a temperature of more than ca. 280°C the bitumen boiler shuts down.
The gas supply is disconnected. Please, remove the defect and restart the burner (described under point 2).
This shutdown does not liberate you, as the operator, from permanent control (see point 1.14).
item-number spare part
0050 2611 secondary thermostat for shutdown for excess temperature ca. 280 °C
Ø 4 x 57; 870 mm capillary tube
0050 2612 Thermodeflector for secondary thermostat