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4.13 Pump
4.13.1 Technical data
Pump model
Min. delivery rate at 300 PSI pressure
Delivery pressure range
Max. suction pressure
Viscosity range
Max. oil temperature
Max. return pressure
Pressure calibration in the factory
D12112
Key (Fig. 26)
1
Suction
2
Return
3
Pressure switch attachment
4
Vacuum meter connection
5
Pressure governor
6
By-pass screw
20102963
Installation
(RLS 300-400/EV FGR)
GPH
PSI
PSI
cSt
°F
PSI
PSI
3
5
4
3/4" NPT
3/4" NPT
G 1/4"
G 1/4"
32
GB
TA3
TA4
(RLS 500/EV FGR)
218
290
102 - 580
7.0
3 - 75
302 (150 °C)
73.0
300
1
6
4.13.2 Priming pump
Before starting the burner, make sure that the tank
return line is not clogged.
Obstructions in the line could cause the sealing or-
WARNING
gan 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, as of-
ten as required.
After 5 or 6 starting operations allow 2 or 3 minutes for the trans-
former to cool.
Do not illuminate the flame sensor or the burner will lock out; the
burner should lock out anyway about 10 seconds after it starts.
The a.m. 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
WARNING
the opening on the vacuum meter 4)(Fig. 26) prior
to starting; otherwise, the pump will seize.
Whenever the length of the suction piping exceeds
20-30 meters, the supply line must be filled using a
separate pump.
TA5
(RLS 650-800/EV FGR)
403
102 - 435
Tab. K
2
5
Fig. 26
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