Electrical Board Calibration - 4 Series - AIRLESSCO LP460 Service & Operation Manual

ELECTRICAL BOARD CALIBRATION (4 Series)
Note: Anytime a sensor, pressure control assembly (board) or both are replaced,
1. PRESSURE CALIBRATION
1. Attach a 50', 1/4" airless hose, airless gun with 0.017 tip and a 5000 psi glycerin filled pressure gauge to
the pump.
2. Place the suction tube into a bucket of Airlessco Pump Conditioner and water.
3. Turn prime/pressure relief valve to the prime (open) position.
4. Turn pressure control knob clockwise until machine starts to prime.
5. Place the prime/pressure relief valve in the pressure (closed) position.
6. While watching pressure gauge, slowly adjust the Pressure Trimpot (Fig. 21) (clockwise to increase and
counterclockwise to decrease) until the maximum static pressure is 3000 psi, with the pressure control
knob fully clockwise. Trigger the gun several times to ensure pressure returns to 3000 psi .
2. PHASE LIMIT TRIMPOT CALIBRATION
1. Attach a 50', 1/4" airless hose, airless gun with .017 tip and a 5000 psi glycerin filled pressure gauge to the
pump.
2. Place the suction tube into a bucket of Airlessco Pump Conditioner and water.
3. Turn pump ON and turn up pressure control until the machine starts to prime.
4. Place the prime/pressure relief valve in the pressure (closed) position.
5. Pressurize pump to 600 psi.
6. Trigger the gun several times noting the deadband (the amount of pressure drop before the pump rebuilds to
set pressure).
7. If deadband is greater than 100 psi, adjust the phase limit (Figure 21) trimpot so that the deadband is less than
100 psi and the pressure increase after the gun trigger is released is less than 200 psi. These pressures are
guidelines and may vary slightly from pump to pump.
the following calibrations must be performed.
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