Baseline-systems BHM Series Hydrometer Instrukcja Użytkownika Pobierz pdf (Strona 29)

Hydrometers Operation and Maintenance Manual • 29

Maintenance 3” and 4” Models

HYDROMETER DIS-ASSEMBLY AND RE-

ASSEMBLY

Dis-assembly of the 3” and 4” hydrometer is divided into the following

assemblies:

• Cover Assembly

• Diaphragm/Stem and Base Assemblies

• Inlet Spider/Strainer Assembly

Perform only those steps necessary to inspect and replace parts as directed

by the troubleshooting procedures. It is recommended to replace the

various

o-rings and gaskets during dis-assembly as well as to inspect certain

other parts. All gaskets and o-rings must be covered with grease prior to

installation.

HYDROMETER COVER AND BASE SUB-

ASSEMBLIES

Removal

• Remove the register subassembly as described on page 24.

• Loosen and remove the cover screws (10) along with the washers.

• Lift the cover off of the hydrometer body (29). Be especially careful

not to damage the impeller.

• Carefully remove the impeller assembly (37) from the hydrometer

body.

• Inspect the impeller and its components for signs of excessive wear

or damage. Verify that the impeller shaft is straight. Replace as

necessary.

• Inspect the base o-ring (42) for excessive wear or damage. Replace as

necessary.

Re-assembly

• Insert the impeller (37) into the inlet spider (located inside the

hydrometer base).

• Insert the base “O” ring (42) into the groove on the upper body ange.

• Carefully place the cover over the impeller shaft (37) and onto the

hydrometer body (29).

• Replace and tighten the cover screws (10).

• Replace the register subassembly as described on page 24.

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Baseline-systems BHM Series Hydrometer Instrukcja Użytkownika Strona 29