cashco CA-2 Instrukcja instalacji, obsługi i konserwacji - Strona 3

Przeglądaj online lub pobierz pdf Instrukcja instalacji, obsługi i konserwacji dla Urządzenia przemysłowe cashco CA-2. cashco CA-2 10 stron. Back pressure / relief regulators

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V. SHUTDOWN

1. On systems with a bypass valve, and where

sys tem pressure is to be maintained as the

reg u la tor is shut down, slowly open the by pass

valve while closing the inlet (up stream) block

valve. Fully close the inlet (upstream) block

valve. (When on bypass, the sys tem pressure

must be constantly ob served and man u al ly

regulated. Close the outlet (down stream) block

valve.

VI. MAINTENANCE

SYSTEM UN DER PRES SURE. Prior to performing

any maintenance, isolate the reg u la tor from the

system and relieve all pres sure. Failure to do so

could result in personal injury.

A. General:

1. Maintenance procedures hereinafter are

based upon removal of the regulator unit from

the pipe line where installed.

2. Owner should refer to owner's procedures for

removal, handling, cleaning and disposal of

nonreusable parts, i.e. gaskets, etc.

3. Refer to Figure 1, Model CA-1 or CA-2 for

the basic regulator. Blow-ups of options are

in clud ed with each drawing.

B. Diaphragm Replacement

To prevent damage to body, use lead jaws when

placing body in a vise. Position so that vise closes

over inlet and outlet of the body.

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

spring chamber (2) directed upwards.

SPRING UNDER COMPRESSION.

re mov ing spring chamber, relieve spring

compression by back ing out the ad just ing screw.

Failure to do so may result in flying parts that

could cause personal injury.

IOM-CA

WARNING

CAUTION

WARNING

Prior to

SECTION V

Do not walk away and leave a bypassed

reg u la tor unattended.

2. If the regulator and system are to both be

shut down, slowly close the inlet (upstream)

block valve. Close the outlet (downstream)

valve only if reg u la tor re mov al is required.

SECTION VI

2. Relax range spring (6) by loosening the

lock nut (4) and turning ad just ing screw (3)

CCW until re moved from spring cham ber (2).

NOTE: If the Option -2 handwheel is utilized,

the ad just ing screw (3) and lock nut (4) are re-

placed with a knob (18) and lock nut (4). With

the Option-22 panel mounting w/handwheel,

the ad just ing screw (3) and lock nut (4) are

replaced with a knob (18), lock nut (4) and a

panel mounting nut (19).

3. Loosen spring chamber (2) by placing wrench

on "flats" and rotating CCW.

4. Remove spring chamber (2), spring button (5)

range spring (6), and diaphragm stop (9).

5. Remove the diaphragm subassembly

con sist ing of the pressure plate nut (7), lock

wash er (8), pressure plate (10), diaphragm

(11), plug gasket (13) and plug (14). NOTE:

Refer to the quan tity of dia phragms (11)

in cor po rated per the bill of ma te ri als listing.

De pend ing on inlet pressure level, multiple

metal diaph ragms (11) may be "stacked".

Model's CA-1/CA-2 Diaphragm Sub as sem bly

6. Loosen pressure plate nut (7) and sep a rate all

parts (7, 8, 10, 11, 13 & 14) of the di a phragm

sub as sem bly.

7. Inspect pressure plate (10) to ensure no

de for ma tion due to over-pressurization. If

de formed, re place.

CAUTION