Emerson Anderson Greenwood 2000A Series Instrukcja obsługi - Strona 6

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2000A Series

Maintenance

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WARNING

Always make sure that the tank is at

atmospheric pressure before opening.

pressure build-up inside the tank can cause

a spray to be emitted from the vent if opened

under pressure.

An opened EPRV, where the EPRV arm and

cover have rotated away from contacting the

base, contains a large amount of potential

energy. Always use appropriate lifting

equipment when installing or maintaining the

EPRV to avoid the risk of serious injury if the

EPRV closes rapidly.

Follow the instruction below for the preventive maintenance

of the 2000A Series.

1. Rotate arm. Inspect and make sure the open and close

without block.

2. Inspect seat and seal whether they are damaged. Clear

away any debris or buildup that may cause the vent

to become lodged or impede air flow through the unit.

Clean the internal components with a suitable solvent

and non-abrasive cloth.

3. Close the arm slowly. Inspect the close without block.

4. Clear away any debris or buildup on the unit surface

that may cause the vent to become lodged, impede air

flow or add weight to the lid assembly (added weight will

adjust the pressure setting of the vent).

Remote Monitoring Maintenance

1. Maintain 2000A Series EPRV with Smart

Wireless Monitoring option in the same way as all

standard EPRV.

2. Take certain precautions when cleaning the transmitter.

The surface resistivity of the antenna assembly is

greater than 1 GΩ. To avoid electrostatic charge

build-up, it must not be rubbed or cleaned with solvents

or dry cloth.

ROTATE AND OPEN

Figure 9. Rotating and Opening the Arm

Figure 10. Closing the Arm

Pressure Setting Information

The 2000A Series can reach various pressure settings in

units of ounces, inches of water, millimeter of water, or kPa

column. The minimum pressure setting that each vent can

achieve depends on the individual vent size and material.

Minimum settings are reached when the unit is installed by

itself. However, when weights are added to the arm of the

unit, elevated pressures can be reached. These elevated

settings are preset at the factory and should never be

field adjusted.