
b. If motor does not run, replace motor.
9.
With pump operating and preheater ball valve closed, verify that the pump outlet
pressure is around 60 psi (pump is now in bypass).
Speed testing with a tachometer
10.
Test pump shaft speed per tachometer instruction and compare to values found in the
table under step 4.
Perform a suction test on system
11.
Close fire stop valve and push down on the stem. Or, close ball valve.
12.
Run pump until the vacuum gauge reads 15 in/Hg (should quickly reach), and stop
pump.
13.
Cap the discharge side of the pump and note the vacuum gauge reading.
14.
Wait 30 minutes.
15.
Vacuum gauge reading should be the same as noted in step 14.
a.
If not, check fittings and connections and retest, looking for signs of vacuum
leaks.
Flow test
16.
Disconnect the 3/16” copper line from the inlet of the solenoid valve at the top of the
preheater (you will use this tube to catch oil coming from the preheater.).
17.
Have the graduated cylinder located so as to catch oil from the tube in step 17.
18.
Start timing once the burner turns on by applying jumpers to the T & F terminals.
19.
Allow to run for 120 seconds (2 minutes) and remove jumpers.
20.
Fluid levels should be near the listed values in the following table.
Model
Listed Flow
Rates [gph]
Flow [oz/120
seconds]
Flow [ml/120
seconds]
140
1.0
4.3
126.2
200
1.4
6.0
176.7
350
2.5
10.7
315.5
73
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