Emerson CP200 Instruction Manual download pdf (Page 6)

CP200 Series

Secondary Seat™ Protection does not provide additional

overpressure protection in the event the secondary seat or

disk is damaged by debris or contamination in the pipeline,

or from conditions that would cause the regulator to go

wide-open. When selecting Secondary Seat Protection

option, it is recommended that:

• Other additional overpressure protection methods be

added in the downstream system as discussed in the

Overpressure Protection section; and

• A periodic downstream lock-up pressure test is done.

If lockup pressures are elevated above normal, that

indicates that the primary orice/seat or the disc are no

longer providing shutoff and that the Secondary Seat

Protection option is serving as the primary shutoff. The

regulator should then be maintained as discussed in the

Maintenance section of this manual.

Installation and Overpressure

Protection

WARNING

Personal injury or system damage may

result if this regulator is installed, without

appropriate overpressure protection, where

service conditions could exceed the limits

given on the regulator nameplate.

Regulator installations should be adequately

protected from physical damage.

The loading regulator vent should be kept open

to permit free ow of gas to the atmosphere.

Protect vent openings against entrance of

rain, snow, insects, or any other foreign

material that may plug the vent or vent line.

On outdoor installations, point the loading

regulator vent downward to allow condensate

to drain (see Figures 4 and 8). This minimizes

the possibility of freezing and of water or

other foreign materials entering the vent and

interfering with proper operation.

Under enclosed conditions or indoors,

escaping gas, such as in the case of a

ruptured diaphragm, may accumulate and be

an explosion hazard.

CAUTION

The CP200 Series regulators have an

outlet pressure rating lower than their inlet

pressure rating. If actual inlet pressure can

exceed the outlet pressure rating, outlet

overpressure protection is necessary.

However, overpressuring any portion of

the regulators beyond the limits in the

Specications section may cause leakage,

damage to regulator parts, or personal injury

due to bursting of pressure-containing parts.

Some type of external overpressure

protection should be provided if inlet pressure

will be high enough to damage downstream

equipment. Common methods of external

overpressure protection include relief valves,

monitoring regulators, shut-off devices, and

series regulation.

If the regulator is exposed to an

overpressure condition, it should be

inspected for any damage that may have

occurred. Regulator operation below these

limits does not preclude the possibility of

damage from external sources or from debris

in the pipeline.

The CP200 Series is an internally registered

pressure reducing regulator and has

outlet pressure ratings lower than the inlet

pressure ratings. Complete downstream

overpressure protection is needed if the

actual inlet pressure exceeds the outlet

pressure rating.

General Installation Instructions

Before installing the regulator:

• Check for damage, which might have occurred

during shipment.

• Check for and remove any dirt or foreign material, which

may have accumulated in the regulator body.

• Blow out any debris, dirt or copper sulfate in any copper

tubing and the pipeline.

• Apply pipe compound to the external threads of the pipe

before installing the regulator.

• Ensure gas ow through the regulator is in the same

direction as the arrow on the body. “Inlet” and “Outlet”

connections are clearly marked.

Installation Location

• The installed regulator should be adequately protected from

vehicular trafc and damage from other external sources.

Figure 4. CP200 Series Regulator Installed with a Type 289H

Relief Valve for High Capacity Relief

PROTECT VENT PIPE

WITH RAIN CAP

TYPE 289H

RELIEF VALVE

TYPE 67CP/CPR

VENT POINTED DOWN

TYPE CP200

REGULATOR

1 2 3 4 5 6 7 8 9 10 11 12

CP200 Series 1

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Emerson CP200 Instruction Manual Page 6

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