REPLACING THE PRESSURE CONTROL & CIRCUIT BOARD
WARNING
To reduce the risk of serious bodily injury, including fluid injection or splashing in the eyes or on the skin, or injury from moving parts, always follow the Pressure Relief Procedure Warning on page 16 before checking, adjusting, cleaning or shutting off the sprayer. Unplug the power supply cord.
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13 | MOTOR |
1 | |
| LEADS |
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| GREEN & YELLOW |
| RED |
| PINK |
| BROWN |
NOTE: A circuit board (23f) is not included with a new |
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| pressure control (50). However, it is included with | TRIAC |
| 303 |
| a new motor and it can be ordered separately. | LEADS |
| 23c |
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| Be sure to order the correct circuit board. See the | WHITE |
| 23f |
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| application information on page 26. | RED |
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| CAUTION | WHITE |
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| Do not allow the fittings (A) to move when removing |
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| the elbow (312) or nipple (313) from the pressure |
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| GREEN |
| control, to avoid altering the factory setting of the |
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| BLACK |
| pressure control or damaging the pressure control. |
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| POWER |
Circuit Board Removal | 50 |
| SUPPLY | |
41 | LEADS | |||
1. | Remove the pressure control cover (41). Pull the cir- | Fig 23±1 | 0749 | |
| cuit board (23f) out carefully, just enough to reach the |
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| wire terminals. Disconnect the leads. Remove the |
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| board. See Fig 23±1. |
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Pressure Control Removal |
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| 40 | |
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| 50 | ||
2. Disconnect the hose (52). See Fig 23±2. |
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3. Disconnect the remaining two motor leads (black and | A |
| 41 | |
312 |
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| green/yellow). See Fig 23±1. |
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4. Remove the screws (7). See Fig 23±2. |
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5. Pull the pressure control (50) away from the conduit |
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| 313 | |
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| (1) and carefully guide the leads through the connec- | 47 |
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| tor (303) one at a time. See Fig 23±1. |
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| 302 |
6. | Remove the mounting bracket (40). Remove the fit- | 52 |
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| tings (302, 312, and 313). Remove the fluid filter (47). |
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| Fig 23±2 |
| 0677 | |
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| Install these parts on the new pressure control. See |
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| Fig 23±2. | 10. Mount the pressure control on the cart. | ||
Pressure Control Installation | 11. ADJUST THE PRESSURE CONTROL! See page 24. | |||
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7. | Guide the motor leads into the new pressure control. |
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8.Position the circuit board in the pressure control so the wire connectors are at the top. Connect the leads to the board. Guide the leads into the pressure con- trol, making sure they don't catch on anything. Slide the board into place.
9.Connect any other loose wires. See Fig 23±1.
WARNING
Adjust the pressure control whenever a new or used pressure control or circuit board is installed, to reduce the risk of overpressurization which can result in component rupture, fire or explosion. Im- proper adjustment may also prevent the sprayer from obtaining the maximum working pressure, re- sulting in poor sprayer performance.
