Nordson_EFD_Rhino_SD2_XD2_Operating Manual - 第22页

Rhino SD2/XD2 Pumps 18 E 2013 Nordson Corporation Part 1073520-12 Replace a Pilot V alve The pilot valves can be replaced without removing the air motor from the pump. Remove and Install a New Pilot V alve 1. See Figure …

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Rhino SD2/XD2 Pumps
17
Part 1073520-12
E 2013 Nordson Corporation
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U-CUP
ORIENTATION
Figure 9 Replacing the Trip-Rod U-Cup
Rhino SD2/XD2 Pumps
18
E 2013 Nordson Corporation
Part 1073520-12
Replace a Pilot Valve
The pilot valves can be replaced without removing the air
motor from the pump.
Remove and Install a New Pilot Valve
1. See Figure 10. Remove the screws (1) securing the
cover (2) to the trip-rod assembly (3).
2. Disconnect the tubing (4, 5 or 6, 7) from the pilot
valve (9 or 13).
3. Remove the screw (11) and washer (10) securing the
pilot valve (9 or 13) to the mounting pad (8).
4. Install the pilot valve (9 or 13) to the mounting
pad (8) using the washer (10) and screw (11).
Thread the screw into the mounting pad. Do not
tighten the screw at this time.
Adjust the New Pilot Valve
1. Cycle the air motor:
a. Upper Pilot Valve—Cycle the air motor until the
trip-bar (12) is fully extended.
b. Lower Pilot Valve—Cycle the air motor until the
trip-bar (12) is fully retracted.
2. Set the gap between the roller lever on the pilot
valve (9 or 13) and the trip-bar (12):
a. Make sure that pilot valve moves freely and that
the roller lever is bottomed out.
b. Using the adjustment set screw, move the
pilot valve in or out to obtain a gap of
0.040−0.070 in. (1.02−1.78 mm) between the
roller lever on the pilot valve and the trip-bar.
Tighten the hold-down screw securely.
3. Connect the tubing (4, 5 or 6, 7) to the pilot
valve (9 or 13). See Figure 25 in the Specifications
section for the proper tube routings.
4. Install the cover (1) to the trip-rod assembly using the
screws (2). Tighten the screws securely.
Rhino SD2/XD2 Pumps
19
Part 1073520-12
E 2013 Nordson Corporation
0.040−0.070 IN.
IN OUT
ADJUSTMENT
SET SCREW
PILOT VALVE
ROLLER LEVER
(1.02−1.78 MM)
BOTTOMED OUT
TRIP BAR
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5
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9
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11
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7
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12
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LOWER PILOT VALVE SHOWN
Figure 10 Replacing a Pilot Valve