Emerson EZH and EZHSO Series Pressure Reducing Regulators Bedienerhandbuch PDF herunterladen (Seite 22)

EZH and EZHSO Series

Damper and Restrictor Maintenance

1. Remove screw (key 31) and plate (key 29) off from

the body (key 16).

2. Remove ring nuts (key 30).

3. Remove damper adjusting screw with hole (key 27).

Remove and inspect O-ring (key 28) for damage

or wear and replace if necessary. Lightly lubricate

O-ring before placing on the adjusting screw. Insert

damper adjusting screw into the body (key 16) and

tighten. Insert ring nut (key 30) and tighten. Back

out damper adjusting screw until it stops.

4. Remove restrictor adjusting screw with hole

(key 32). Remove and inspect O-ring (key 28) for

damage or wear and replace if necessary. Lightly

lubricate O-ring before placing on the adjusting

screw. Insert restrictor adjusting screw into the

body (key 16) and completely tighten. Insert ring

nut (key 30) and completely tighten. Back out

restrictor adjusting screw 1/2 turn.

Note

When using a Type PRX/120 pilot with a

Type PRX/125 pilot as a monitor, use the

following settings:

• Restrictor - completely tighten and

then back out three full turns.

• Damper - back out until it stops.

5. Install plate (key 29) and screw (key 31).

Type SA/2

1. Disconnect pilot supply lter regulator and remove

it from the line.

2. Remove cap screws, washers and nuts (keys 2,

9 and 10) from body (key 7) and separate lter

cover (key 11) and regulator cover (key 19) from

the body (key 7). Separate loose components

from the body such as the spring (key 1),

washer (key 3), plate (key 4), lter net (key 8),

felt (key 12), diaphragm (key 18), spring washer

(key 20) and nut (key 21).

3. Remove and inspect O-ring (key 13) for damage

or wear and replace if necessary. Lightly lubricate

the O-ring before placing it back in the lter cover

(key 11).

4. Clean lter net (key 8). Replace felt (key 12).

5. Inspect diaphragm (key 18) for damage or wear and

replace if necessary. Check the seating surface of

the screw unit (key 17) for erosion, scratches, spurs

or other damage and replace if necessary.

6. Unscrew and remove the regulator seat (key 5).

Inspect O-ring (key 6) for damage or wear and

replace if necessary. Lightly lubricate the O-ring

and place it on the regulator seat.

7. Pull pad holder unit (key 15) out of the body (key 7).

Inspect the seat for damage, replace if necessary.

8. Set the pad holder unit (key 15) on the spring

(key 14) and insert the regulator seat (key 5).

Tighten the regulator seat until it stops.

9. Lightly lubricate the outer and inner rims of the

diaphragm (key 18). Place the diaphragm onto

the screw unit (key 17) and slide the screw unit

into the regulator seat (key 5). Place plate (key 4),

washer (key 3) and spring washer (key 20) and

screw nut (key 21) into the screw unit. Use care to

avoid damage to parts when reassembling.

10. Set the spring (key 1) on top of the nut (key 21).

11. Align the regulator cover (key 19) over the body

(key 7) with the sense port (V) opposite the pilot

supply port (R).

12. Place the felt (key 12) and lter net (key 8), one on

each side of the felt, on the lter cover (key 11).

13. Pick up the body (key 7) and place it on the lter

cover (key 11) with the inlet port (M) aligned

vertically with the sense port (V).

14. Insert cap screws (key 2). Place washers (key 9)

and nuts (key 10) on the end of the cap screws.

Tighten the nuts.

Parts Ordering

Each EZH or EZHSO Series regulator is assigned a

serial number, which can be found on the nameplate.

Refer to the serial number when contacting your

local Sales Ofce for technical information or when

ordering parts.

When ordering replacement parts, reference the key

number of each needed part as found in the following

parts list. Separate kit containing all recommended

spare parts is available.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 39 40

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