Meunier Technologies DICE DS - DICE TM Module Depressurizing

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DICE

module depressurizing

In order to fully depressurize in DICE

module two actions are

required:

Downstream of the back pressure valve

Depressurizing the DICE internal pressure downstream of the

back pressure valve can be performed by closing the injection

ball valve (1) and the calibration column ball valve (2) and

opening the evacuation ball valve (3). See note for flooded

suction applications.

Upstream of the back pressure valve

The pressure upstream of the back pressure valve can be

released by slightly unscrewing the bleed valve (32). Only

partial unscrewing is required. Depressurizing can be visually

notice by looking at the pressure indicator while unscrewing

the bleed valve. The Bleed valve (32) does not need to be (and

should not be) fully unscrewed to depressor the internal

pressure uptrend.

Note:

 The above procedure only allows depressurizing the

DICE

internal cavities. Chemical pressure may still be present downstream of

the ball isolation valve (for example process pressure could be seen downstream

of the closed injection ball valve). This pressure must be released prior to

disconnecting the DICE

from the tubing or rigid piping.

 If the DICE is installed in a flooded suction application, the pump suction line

should be drained prior to depressurizing the DICE

module.

 No tool should be used to screw, unscrew or tighten the bleed valve. Hand

tight only.

Warning:

The above depressurizing procedure is informative and should in no way limit the

operator's responsibility to validate the absence of pressure before performing

maintenance on the DICE

module.

Even in the absence of pressurized chemical the following minimum personal protective

equipment should be used near the dosing module: protective gloves, glasses and

clothing. Always refer to the MSDS for all safety instructions related to the fluids* used.