Nordson_EFD_Rhino_SD2_XD2_Operating Manual - 第23页

Rhino SD2/XD2 Pumps 19 Part 1073520-12 E 2013 Nordson Corporation 0.040 − 0.070 IN. IN OUT ADJUSTMENT SET SCREW PILOT V AL VE ROLLER LEVER (1.02 − 1.78 MM) BOTTOMED OUT TRIP BAR 2 1 5 4 9 10 11 8 3 7 6 12 13 LOWER PILOT …

Rhino SD2/XD2 Pumps

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

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

LOWER PILOT VALVE SHOWN

Figure 10 Replacing a Pilot Valve

Rhino SD2/XD2 Pumps

E 2013 Nordson Corporation

Part 1073520-12

Replace the Supply

Tube Quad- and O-Rings

Use the following procedure to replace the supply tube

quad- and O-rings.

Remove the Supply Tube Quad- and O-Rings

1. See Figure 11. Remove the screws (4) and

washers (5) securing the upper supply tube

retainer (3) to the air manifold (1).

2. Remove the screws (11) and washers (10) securing

the lower supply tube retainer (9) to the base

plate (18).

3. Remove the supply tube (6) from the air manifold (1)

and base plate (18).

4. Remove the upper and lower retainers (3, 9) from the

supply tube and clean them in a compatible solvent if

necessary.

5. Remove the O-ring (2) from the air manifold (1).

Remove the Quad-rings (7) and O-ring (8) from the

base plate (18). Discard the Quad- and O-rings.

Install the Supply Tube Quad- and O-Rings

1. See Figure 11. Lubricate the Quad-rings (7) and

O-rings (8) with TFE grease. Install the Quad-rings

and O-ring into the base plate (18) as shown.

2. Install the lower retainer to the base plate (18) using

the washers (10) and screws (11). Only finger

tighten the screws at this time.

3. Lubricate the air manifold O-ring (2) with TFE grease

and install it into the air manifold (1).

4. Install the upper retainer (3) onto the air supply

tube (6).

5. Carefully insert the bottom portion of the air supply

tube (6) through the lower retainer (9) and into the

base plate (18).

6. Carefully insert the upper portion of the air supply

tube (6) into the air manifold (1).

7. Secure the upper retainer (3) to the air manifold (1)

using the screws (4) and washers (5). Tighten the

screws to 10−12 ft-lb (13−16 Nm).

8. Tighten the lower retainer screws (11)

to 10−12 ft-lb (13−16 Nm).

Replace the Piston Rod

Retainer U-Cup and O-Ring

1. See Figure 11. Remove the screws (13) and

washers (14) securing the piston rod retainer (15) to

the base plate (17).

2. Remove the O-ring (16) and U-cup (12) from

the piston rod retainer (15). Discard the O-ring

and U-cup.

3. Lubricate the new O-ring (16) and U-cup (12) with

TFE grease. Insert the O-ring and U-cup into the

piston rod retainer (15) as shown.

4. Install the piston rod retainer (15) onto the base

plate (17) using the screws (13) and washers (14).

Tighten the screws to 22−25 ft-lb (30−33 Nm).