Cashco HP-1+6+S Manuel d'utilisateur télécharger pdf (Page 3)

IOM-HP-S-DIFF

6. Adjusting screw (6) o-ring inspection:

a. With locknut (7) and closing cap (28)

re moved, turn adjusting screw (6) CW as

far as possible by turning ﬂ ats on top end.

Care ful ly reach inside spring cham ber (2)

and grasp ad just ing screw (6) by hand.

NOTE: For 1/2" (DN15) and 3/4" (DN20)

size reg u la tors a small piece of plastic

tubing with a 3/4" (19 mm) inside di am-

e ter may be used to grasp the ad just ing

screw (6). Complete ad just ing screw (6)

removal by ro tat ing CCW. See Figure 1.

b. Inspect the backup ring (32) and quad

ring (31) for wear. If nicked or torn - re-

place. NOTE: Make certain the teﬂ on

backup ring (32) will insert into spring

cham ber (2) before the quad ring (31).

(See Fig ure 3 blow-up illustration). Make

sure the quad ring (31) is on straight with

no twist. Use a good grade light weight

grease on both ring seals (31,32).

Figure 1: Adjusting screw (6) o-ring inspection.

A. General:

1. Maintenance procedures hereinafter are

based upon re mov al of the regulator unit

from the pipeline where in stalled.

2. Owner should refer to owner's procedures for

removal, handling, cleaning and dis pos al of

nonreusable parts, i.e. gaskets, etc.

3. Refer to Figure 3 for view of regulator.

WARNING 2

SPRING UNDER COMPRESSION. Relieve spring com-

pression prior to re mov ing diaphragm ﬂ ange bolts .

Fail ure to so may result in ﬂ ying parts that could cause

per son al injury.

CAUTION C

DO NOT AT TEMPT TO REMOVE ADJUSTING SCREW (6)

FROM TOP OF SPRING CHAM BER (2). The ad just ing

screw (6) is threaded upward from inside the spring cham-

ber (2). The CCW ro ta tion used to relieve range spring (14)

tension will come to a stop. At the stop ping point, do not

apply any torque to ad just ing screw (6) or dam age may

occur and ren der the unit in op er a ble. See Figure 1.

CAUTION D

When body ﬂ ange hardware (9,23,34,35) is re moved from

this unit it should al ways be replaced with new. The new

hardware (9,23,34,35) must have the prop er grade spec i-

ﬁ ca tion iden ti ﬁ ca tion markings and meet the following

standards:

1. All cap screws (23) and ﬂ ange stud nuts (9) must have

"heavy hex heads".

2. All studs (34,35) and cap screws (23) must comply with

or exceed the requirements of ASTM A-193, Grade B7.

3. All ﬂ ange stud nuts (9) must comply with or exceed

the requirements of ASTM A-194, Grade 2H.

New body ﬂ ange hardware (9,23,34,35) may be pur chased

from Cashco, Inc. or through the OEM.

B. Diaphragm Replacement:

1. Securely install the body (1) in a vise with the

spring chamber (2) directed upwards.

2. To relieve range spring (14) compression,

re move clos ing cap (28) by turning CCW.

Re move lock nut (7) by turning CCW. Turn

ad just ing screw (6) CCW until range spring

(14) compression is relieved. NOTE: See

CAUTION C).

3. Draw or embed a match mark between body

(1) casting, body spacer (24), and spring

cham ber (2) casting along ﬂ anged area.

4. Remove all body flange hardware

(9,23,34,35).

5. Remove spring chamber (2), range spring

(14), spring button (4), pressure plate (3), body

spacer (24), diaphragm (12), and o-rings (30).

WARNING 1

SYSTEM UN DER PRES SURE. Prior to per form ing any

maintenance, isolate the reg u la tor from the system and

relieve all pres sure. Failure to do so could result in per-

sonal injury.

SECTION VI

VI. MAINTENANCE

1 2 3 4 5 6 7 8

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Cashco HP-1+6+S Manuel d'utilisateur Page 3

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