Replacing The Pressure Switch / Transducer - Titan Impact 400 Series Operating Manual

repairs at the unit
11.6
replAcINg The preSSure SWITch /
TrANSDucer
The following procedure must only be performed
i
by a Titan Authorized Service Center.
If the sprayer loses all pressure adjustment,
i
or there is paint leakage from the front of the
sprayer, the pressure switch and/or transducer
may need to be replaced.
1. Open the relief valve, valve position PRIME (k
circulation). Switch the unit OFF. Unplug the power plug
from the outlet.
2. Remove the screw (1) that secures the pressure control
knob (2) to the bottom of the pressure control knob (3).
Remove the knob (2).
3. Loosen and remove the three front cover screws (4).
Remove the front cover (5).
4. Remove the screw (7) from the side of the pressure switch.
Remove the bottom of the pressure control knob (3) from
the top of the pressure switch.
5. Remove the pressure switch assembly (6) from the top of
the transducer (8).
6. Unplug the pressure switch (6) from the wire connector
(10).
Do not attempt to pull wires from the inside of
the pressure switch assembly. If the pressure
switch wire connector (10) is not exposed from
Attention
through the opening in the pump housing, pull
gently on the wires until the connector is shown
through the opening.
7. Check pressure switch continuity at the connector. If the
switch is bad replace with a new pressure switch assembly.
8. Inspect the transducer (8) for the presence of paint. If
there is paint, replace the transducer. If there is no paint,
skip to step 9, below.
a. Using a wrench on the hex head of the transducer, loosen
and remove the transducer assembly.
b. Apply a generous amount of grease to the transducer
O-ring (9). Reinstall the transducer assembly and torque to
70-75 in/lbs.
9. Reconnect the wires (Refer to the Connection Diagram,
section 11.9).
10. Push pressure switch assembly (6) back onto the transducer
until it bottoms out on the transducer hex head.
11. Replace the screw (7) into the side of the pressure switch.
12. See "Resetting the Pressure Switch Timing", section 11.7.
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6
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9
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5
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Impact 400
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