Emerson CSB400 Manual de instrucciones descargar pdf (Pagina 16)

CSB400 Series

The range of allowable pressure settings

for the primary regulator is stamped on

the nameplate. If the required setting

is not within this range, substitute the

correct spring (as shown in Table 6). If the

spring is changed, re-stamp the nameplate

to indicate the new pressure range.

A pressure gauge must always be used

to monitor downstream pressure while

adjustments are being made.

For Types CSB400 and CSB420

1. Remove the closing cap (key 60, Figure 16).

2. To increase the outlet setting, turn the adjusting

screw (key 65) clockwise. To decrease the outlet

setting, turn the adjusting screw counterclockwise.

3. Replace the closing cap.

For Type CSB450

1. Loosen the hex nut (key 58, Figure 16).

2. To increase the outlet setting, turn the adjusting screw

(key 65, Figure 16) clockwise. To decrease the outlet

setting, turn the adjusting screw counterclockwise.

3. Tighten the hex nut.

CSB400 Series with Integral True-Monitor™

When adjusting the primary regulator and Integral

True-Monitor for operation, ensure that the pressure

differences between the primary regulator and the

integral monitor shown in Table 7 are observed. For

example, if the primary regulator setpoint is set at

20 mbar / 8 inches w.c., then the Integral True-Monitor

should be set at a minimum of 35 mbar / 14 inches w.c.

or higher.

To test the Integral True-Monitor operation, the primary

regulator setpoint must be adjusted above the Integral

True-Monitor’s setpoint to simulate a failure of the

primary regulator. If the spring range of the primary

regulator is sufciently high, it can simply be adjusted

above the Integral True-Monitor’s setpoint by following

step 2 above. Otherwise, a different spring with a

setpoint higher than the Integral True-Monitor’s setpoint

must be installed to check the operation of the

Integral True-Monitor.

CSB400 Series with Slam shut

When adjusting the primary regulator and slam shut for

operation, refer to Table 8 for the OPSO setpoints and

also the combined OPSO and UPSO setpoints of the

slam shut for a given regulator spring ranges.

CAUTION

Equipment installed downstream the

Type VSX slam shut device can be

damaged if the following procedure for

resetting the Type VSX slam shut device

is not followed. This equipment

includes the integral Type VSX or

regulator configurations.

Step 1:

• To properly reset the Type VSX slam shut after it

has been tripped to the closed position, a at-head

screwdriver must be inserted into the position shown

in Figure 8 on the backside of the reset button (refer

to Type VSX4 Instruction Manual, key 30, Figure 8).

Step 2:

• The screwdriver should be slowly rotated to gradually

pull the reset button (refer to Type VSX4 Instruction

Manual, key 30) away from the Type VSX device. This

slow movement allows for a slow bleed of the pressure

across the Type VSX slam shut’s disk and seat area.

The operator should be able to hear the pressure

bleeding through the system.

Step 3:

• When the pressure has equalized and the air

bleeding sound has dissipated, the reset button (refer

to Type VSX4 Instruction Manual, key 30) should be

pulled completely away from the Type VSX slam shut

device by hand until the internal shut-off mechanism

has been re-latched.

Step 4:

• Once the operator feels the click of the re-latch

occurring, the reset button (refer to Type VSX4

Instruction Manual, key 30) should be pushed

completely back into its original position.

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Emerson CSB400 Manual de instrucciones Pagina 16

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