Emerson NZ Series, Инструкция по эксплуатации, Страница: 13 / 24

NZ/NZ-M and NZOS/NZOS-M Series
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JPLC and JPHC Series Second Stage Maintenance (refer to Figure 11)
1. Loose locknut (key 73) and back out adjusting screw (key 71) until compression is removed from the spring.
2. Loose spring cover (key 74), then take out spring seat (key 35) and spring (key 36).
3. (Types remote pressure loaded only) Take out O-ring (key 111,112),for damage or wear and replace if necessary.
4. Loose bolts (key 61), then remove upper cover (key 72).
5. Take out second diaphragm assembly (for JPLC Series: keys 50, 51, 52, 53, 57, 58, 59, 63, 108; for JPHC Series: keys 50, 51,
52, 57, 58, 59, 63, 108). Loose nut (key 63).
6. (Types remote pressure loaded only)Take out O-ring (key 113),for damage or wear and replace if necessary.
7. Inspect the diaphragms (key 51) for damage or wear and replace if necessary.
8. Loose sleeve (key 47), then take out O-rings (keys 66 and 67), disk (key 39) and spring (key 44).
9. Inspect the rubber parts of disk and O-ring for damage or wear, replace if necessary.
10. Reassemble by reversing the above sequence.
Restrictor Maintenance (refer to Figures 10 and 11)
1. Remove screw (key 102) and washer (key 103).
2. Remove restrict pin (key 49) carefully.
3. Inspect the small hole on restrict, make sure it has not been blocked.
4. Inspect O-ring (key 65) for damage or wear and replace if necessary. Lightly lubricate O-ring before placing it back.
5. Insert restrict pin (key 49) into main body and tighten.
6. Install screw (key 102) and washer (key 103).
8. Parts Ordering
Each NZ/NZ-M or NZOS/NZOS-M Series regulator is assigned a serial number, which can be found on the nameplate. Refer to the
serial number when contacting your local Sales Office 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.
9. Parts List
Key Description
NZ/NZ-M Series Main Valve (Figure 7)
1 Body
2 Seat
3 Sleeve
4 Cage (Silencer)
4A Cage (Blank)
5 Sleeve Guide
6 Spring
7 Stem
8 Bonnet
9 Bushing
10 Lower Casing
11 Lower Plate
12 Diaphragm
13 Upper Plate
14 Upper Casing
15 Bolt
16 Nut
17 O-ring
18 O-ring
19 O-ring
Key Description
20 Washer
21 Stud
22 O-ring
23 Ring Backup
24 Ring Sliding
25 O-ring
26 Lock Nut
27 O-ring
28 Nut
29 Nut
30 Bolt
31 O-ring
32 Ring Snap
33 O-ring
34 Nut
75 Male Connector
76 Joint
78 Rivet
79 Elbow Connector
80 Sensing Line
81 Flow Arrow