jenway PFP7 - Flame Ignition and Optimisation

2. FUSES
Two fuses are fitted to the instrument. FS1 is the primary fuse provided
to
protect the instrument and any accessories connected to the
power
out
sockets. FS2 is to protect the electronic circuitry in the PFP7. Both
FS1 and FS2 should be of an anti-surge type.
3. POWER IN
A three pin receptacle for the AC mains supply.
4. POWER OUT
Two three pin sockets for flame photometer accessories such as a
compressor. The power from these sockets is controlled by the
instrument power switch on the front panel.
5. RECORDER
Two 4mm sockets which will provide an analogue signal of
approximately 1 volt when the readout is 1000 digits or 100.0, 10.00,
1.000.
6. FUEL GAS
1/4" connector for fuel tubing.
IMPORTANT: Fuel supply must be regulated to 10-15 inches water
gauge (0.36
-0.54psi or 0.025-0.38kg/cm
2
. See section 2.1.2 for
information on different fuel types.
7. AIR
5/16" connector for air tubing.
IMPORTANT: Air pressure on the inlet to the instrument must not
exceed 30psi (2kg/cm
2
). See section 2.1.3.
4.2 Operation – Flame Ignition and Optimisation
1. Ensure that the drain trap is pushed fully down on its clip. Ensure that the drain trap has
solution in it and that no air locks are present. If necessary, purge by adding deionised
water and allowing the surplus to run away.
2. Close the fuel valve by turning fully clockwise. To avoid damaging the valve, it should not
be forced.
3. Turn the fuel valve the required number of turns anti-clockwise depending on the fuel
being used.
Fuel Number of
turns
Propane 3
Butane 4
Natural gas Fully open
L.P.G. 3.5
4. Turn on the fuel supply at source i.e.
cylinder.
5. Switch on electrical power by depressing the power switch. If the air compressor is
powered separately, switch on the air compressor. Ensure that air is present
by
listening for the hissing created as it passes through the nebuliser.
500 795/Rev E/03-17
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