Adjusting Thermal Load At Two-Stage Operation - Schwank infraSchwank D 15U Technical Manual

infraSchwank D / calorSchwank D - shape U
Adjusting thermal load
at two-stage operation
Adjusting the nozzle pressure
1. Open first the gas cock at the end of the flexible
gas hose (Fig.23, page 26).
2. Open the test nipple connection pressure.
Connect the pressure measuring instrument to the
test nipple and determine the connection
pressure.
Close the test nipple after the measurement!
3. Open the test nipple nozzle pressure.
Connect the pressure measuring instrument to the
test nipple and determine the nozzle pressure.
4. Turn the adjusting screw on the pressure
regulator slowly in the "+" or "-" -direction while
continuously watching the pressure measuring
instrument. Stop turning as soon as the required
nozzle pressure is reached. The required nozzle
pressure for natural gas H (W
shown in table 5 page 14.
5. Take off the plastic cap E (see Fig. 25, page 26)
from the lifting magnet (lift the cap with a small
screw-driver)
6. Put the radiant tube into operation.
7. The electrical supply must activate for burner unit
and lifting magnet to adjust the nozzle pressure
of max. load. Turn the outer adjusting screw C
(width 8) until the required nozzle pressure is
reached.
8. The electrical supply must activate only for the
burner unit to adjust the nozzle pressure of min.
load. Turn the inner adjusting screw D (screw-
driver 6x1) until the required nozzle pressure is
reached.
9. Checking adjustment nozzle pressure as
described by the single stage performance.
10. Close test nipple after the measurement and
and check if the test nipple is gas-tight.
11. Put the plastic cap E on the lifting magnet.
26
3
=50.0 MJ/m ) is
o,B
Fig 23: Gas cock with integrated TSD
Fig 24: Adjusting screw nozzle pressure single stage
gas combination valve
C
Fig 25: Adjusting screw nozzle pressure with
lifting magnet two stage gas combination valve
A
B
E
D