Aerotech BT 400-46 Installation And Operation Maintenance page 38

Section 5
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5.53 Fuel Pump Adjustment
5.54 Pressure testing and adjustment of the fuel pump should be performed as follows:
(a) Gain access to the burner control valve by removing hood.
(b) Remove plug from tee fitting at burner control valve (see figure 5-4). Install a
0-300 psi pressure gauge and needle valve (see figure 5-5). Ensure needle valve
is closed.
(c) Start engine and allow to warm up. During warm up, observe pressure gauge.
The reading should be below 20 psi. Engage burner and ensure fuel has ignited.
Pressure gauge should read 150 psi +/- 2 psi.
(d) If pressure is not within tolerance, adjust pump by removing the end cap nut on
top of pump and turning adjusting screw. Rotate screw clockwise to increase
and counterclockwise to decrease pressure (see figure 5-7).
Figure 5-4 • Valve & Block Assembly
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AEROTECH HERMAN NELSON INTERNATIONAL INC.
100 Eagle Drive, Winnipeg, Manitoba Canada R2R 1V5
Phone: 204-633-1999 (24 Hours) Fax: 204-694-1612 Email:
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