Instruction manual

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PRESSURE CONTOL ASS'Y CALIBRATION
NOTE: ANYTIME A SENSOR OR PRESSURE CONTROL ASSEMBLY (BOARD) OR BOTH ARE REPLACED, THE
FOLLOWING CALIBRATIONS MUST BE PERFORMED.
NOTE: PRESSURE CONTROL ASSEMBLIES (BOARDS) ARE NOW BEING EQUIPPED WITH A GREEN
GROUNDING WIRE ATTACHED. CONTECT THE GROUNDING WIRE TO TERMINAL BOX USING THE SAME
SCREW THAT HOLDS THE GROUNDING WIRE FROM THE POWER CORD.
1. ZERO CALIBRATION
2. PRESSURE CALIBRATION
1. Complete the ZERO calibration, as per "ZERO
CALIBRATION" prior to commencing this calibration.
2. Attach a 50', 1/4" airless hose, airless gun with 0.017 tip
and a 5000 psi glycerin lled pressure gauge to pump.
3. Place the suction tube into a bucket of Coro-chek and
water.
4. Turn prime/pressure relief valve to the prime (open)
position.
5. Turn pressure control knob clockwise until machine
starts to prime.
6. Place the prime/pressure relief valve in the pressure
(closed) position.
7. While watching pressure gauge, slowly adjust the
pressure trimpot (clockwise to increase and counter
clockwise 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 .
FORMERLY KNOWN AS THE LOW VOLTAGE OR
MASTER VOLTAGE CALIBRATION
1. Attach a 50', 1/4" airless hose, airless gun with .017
tip and a 5000 psi glycerin lled pressure gauge to the
pump.
2. Place the suction tube into a bucket of anti-freeze 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 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.
8. Reattach pressure control assembly to unit.
3. PASE LIMIT CALIBRATION
1. Place prime/pressure relief valve in the prime (open)
position.
2. Set the pressure control knob to the minimum setting
(CCW).
3. Remove the screws and lower the pressure control
assembly.
4. Ensure the jumper is on the "P-ZR" terminal. Note: This
jumper comes with a new pressure control assembly
(board) and is installed on the "P-ZR" terminals. If you
are "Zero Calibrating" a pressure control assembly
presently in the unit, remove jumper from single terminal
P-ZR and place on both terminals P-ZR. When Zero
Calibration is complete, replace jumper on a single
terminal of P-ZR.
5. Turn machine "ON" and ensure it is not cycling.
6. If the yellow zero light on the electrical board is ON,
use an insulated screwdriver to turn the "ZERO" trimpot
counter-clockwise until the light goes out. Then turn
it clockwise until the light just comes back on. 7. If the
yellow light is OFF, turn the "Zero" trimpot clockwise, just
until the light comes on and stop.
NOTE: If the yellow light remains constantly "ON", or
"OFF" during this calibration, the sensor is defective and
should be replaced.
8. IMPORTANT:When calibration is complete, move jumper
from both "PZ-R" terminals to single terminal on P-ZR.