Blacoh SENTRY CIP Panduan Pemasangan & Pengoperasian - Halaman 8

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Prior to starting the pump, pre-charge the dampener to approximately 80% of expected system pressure and

replace fill valve cap. DO NOT USE OXYGEN. The pre-charge pressure in the dampener must always be lower

than pump discharge pressure. Generally, pulsation is most effectively minimized when the gas pre-charge is 80%

of system pressure. Start the pump to generate system pressure. The dampener charge pressure may need to be

adjusted up or down to be most effective in reducing pulsation. NOTE: The most effective method to set the

proper dampener charge is to install a pressure gauge downstream of the dampener and adjust the dampener to

minimize needle movement on the gauge.

Once system pressure is in contact with the bladder/bellows, the gas charge will be compressed to the

system pressure and the dampener gauge will read the system pressure, not the initial charge pressure.

Once working pressure is achieved, adjustment may be necessary.

charge in the dampener by bleeding or filling through the gas valve.

adjustment (this may take a minute or two) before making further adjustments.

EAD

EFORE

NSTALLATION

Step 1 — Installation Position

Install the dampener in-line, as close to the pump inlet as possible and after any upstream equipment such as

risers, valves, elbows, meters, or filters. Dampener installation should be no more than ten pipe diameters from

pump inlet. If using a flexible connector on the inlet side of the pump between the system piping and pump, the

dampener should be installed on a tee at the pump inlet manifold. The flexible connector should be attached to

the dampener's tee and system piping (see FIGURE 1).

upstream of the dampener to aid in proper dampener adjustment.

Step 2 — Charging and Start-Up (see Pre-Charge Notes)

Chargeable models do not require an air line connection. Dampener must be pre-charged with compressed air or

Nitrogen, using a hand pump, Nitrogen tank/bottle, or compressor. DO NOT USE OXYGEN. Charging hose kits

are available from BLACOH.

A. Suction Lift/Dampener: When using the dampener in a suction lift application no pre-charge is required. Start

the pump to generate working pressure.

created with each suction stroke will compress the air trapped in the bladder/bellows.

B. Positive Inlet Pressure: Pre-charge the dampener with 50% of the static system pressure realized at the

pump inlet. Start the pump to generate working pressure. Minor pressure adjustments may be required. Allow

the system to respond to each adjustment (this may take a minute or two) before making further adjustments.

INLET STABILIZER

COMPOUND

PRESSURE GAUGE

10"

15"

20"

25"

10"

20"

Psi

30"

INLET

FILTER

NSTALLATION FOR

As system pressure and vacuum is created, the acceleration head

ISOLATION

VALVE

30"

FLEX

CONNECTOR

BLACOH F

Gradually increase or decrease the gas

Allow the system to respond to each

UMP

NLET

A compound pressure gauge should be installed

PULSATION DAMPENER

FLEX

ISOLATION

CONNECTOR

VALVE

PUMP

, I

LUID

ONTROL

EAD

EFORE

NSTALLATION

I G U R E

PRESSURE GAUGE/

INSTRUMENTATION

BLACOH

DISCHARGE

ALTERNATE MOUNTING

METHOD

PUMP