Pump; Air Pressure Switch - Riello RL 70/M Installation, Use And Maintenance Instructions

PUMP SUNTEC J7 C
A
B
C
D
E
F
G
H
(A)

AIR PRESSURE SWITCH

(B)
J7 C
GPH 60.8
PSI 145 - 304.5
"Hg 13
cSt 2,8 - 200
°F 194 (90 °C)
PSI 21.8
PSI 290
inch 0,006
PUMP (A)
1 - Suction
2 - Return
3 - Pressure gauge attachment G 1/8"
4 - Vacuum gauge attachment
5 - Pressure adjustment screw
6 - By-pass screw
A - Min. delivery rate at 290 PSI pressure
B - Delivery pressure range
C - Max. suction pressure
D - Viscosity range
E - Max light oil temperature
F - Max. suction and return pressure
G - Pressure calibration in the factory
H - Filter mesh width
PUMP PRIMING
- Before starting the burner, make sure that the tank
return line is not clogged. Obstructions in the line
could cause the seal located on the pump shaft to
break.
The time required for this operation depends upon the
diameter and length of the suction tubing. If the pump
fails to prime at the first starting of the burner and the
burner locks out, wait approx. 15 seconds, reset the
burner, and then repeat the starting operation as often
as required. After 5 or 6 starting operations allow 2 or 3
minutes for the transformer to cool.
Important: the priming operation is possible because
the pump is already full of fuel when it leaves the factory.
If the pump has been drained, fill it with fuel through the
opening on the vacuum meter prior to starting; other-
wise, the pump will seize. Whenever the length of the
suction piping exceeds 66 - 98 ft, the supply line must be
filled using a separate pump.
AIR PRESSURE SWITCH (B)
Adjust the air pressure switch after having performed all
other burner adjustments with the air pressure switch set
D2352
to the start of the scale (B).
With the burner operating at min. output, increase adjust-
ment pressure by slowly turning the relative dial clock-
wise until the burner locks out.
Then turn the dial anti-clockwise by about 20% of the set
point and repeat burner starting to ensure it is correct.
If the burner locks out again, turn the dial anti-clockwise
a little bit more.
9
1/2" NPT
1/2" NPT
G 1/8"