Chapter 6 — Adjustment Procedures
6-22 Part No. 750-184
Figure 6-9 OIl viscosity
Review of the applicable maintenance instructions given in Chapter
8 will aid in maintaining an efficient fuel system.
Note: To prevent oil heater coking, the fuel oil pump must be
in operation during all times that an oil heater is in
service. During any time that the oil pump is not
operating, the oil heating system must be electrically
shut down by manually turning the oil heater switch to
the “off” position.
When the boiler is shut down, or switched over to gas firing, the
pump must operate for a sufficient period of time to cool the oil
heater. Similarly, if an electric, steam, or hot water oil heater is
removed for servicing, the temperature of the heater should be
reduced by circulating oil until it has cooled.
U. FUEL OIL COMBUSTION ADJUSTMENT
After operating for a sufficient period of time to assure a warm
boiler, adjustments should be made to obtain efficient combustion.
33
35
40
45
50
60
70
80
100
150
200
350
500
750
1000
1500
2000
3000
4000
10000
20000
0 20 40 60 80 100 122 140 160 180 200 220 240 260 280 300
MAXIMUM LIMIT FOR PUMPING
MAXIMUM LIMIT FOR ATOMIZATION
RECOMMENDED LIMIT FOR ATOMIZATION
NO. 2
NO. 4
NO. 5
NO. 6
Temperature - Degrees Fahrenheit
Viscosity - Saybolt Universal Seconds
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