Bedienungsanleitung Humminbird 777c2 (Seite 4 von 10) (Englisch)

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Reassembly: Before you begin reassembly of the watermaker, clean all parts using clean, lint-free

rags. At this time, all parts should be carefully inspected for wear or damage. Use a 10x magnifier or

loupe to examine the seals, o-rings and other small parts. Stubborn rust stains and deposits on metal

parts may be cleaned with a soft-metal wirebrush (e.g., stainless steel or brass). Do not use polishes,

cleaning compounds containing abrasive materials, or regular steel wire brushes. Refer to the exploded

drawing of the pump in Figure A-2 in the Appendix for the location of parts and seals during

reassembly. Refer to Figures A-3 and A-4 in the Appendix for full-size drawings and identification of

the components included in the Repair Seal Kit. In the following procedure, references to the Repair

Seal Kit will be abbreviated to “RSK.” It will be assumed that all o-rings, seals, and mating surfaces

have been lightly lubricated with non-petroleum silicon grease (supplied with the RSK).

Warning: Use only non-petroleum silicon grease to lubricate your watermaker parts. Lubricants

with a petroleum base will damage several watermaker components, including the reverse osmosis

membrane. Be especially cautious of lubricants that “contain” teflon, silicon, etc.—such products

could also contain petroleum-based components. An ample supply of silicon grease is included with

each RSK.

 Reinstall the piston: If you want to replace the O-rings on

the piston, refer to the figure below

 Install washer with chamfer on washer

facing ½” dia of plunger rod and a new

O-ring onto the plunger rod, if you have

an old-style piston, you only have to

install a new O-ring into the plunger rod

without a washer.

 Slide piston onto the threaded end of the

plunger rod, and secure with the washer

and nut.

1. Refer to Figure R-5 during the following procedure.

Place the piston assembly on a flat, stable surface with

the shaft pointing up. Slide the installation tool

(provided in the RSK) over the piston shaft with the wide

end down. Lubricate the new PIP ring, cup seal and the installation tool with silicon grease. With

the grooved side facing up, slide the PIP ring down the installation tool and onto the piston. Re-

peat this process for the cup

seal. Note that the grooved

side of the cup seal should be

facing down; i.e., the grooved

sides of the PIP ring and the

cup seal should be facing each

other. When finished with the

installation, remove the instal-

lation tool from the piston shaft.

2. To install the check valve

components, refer to Figure R-

3. Remove the old o-rings from

the poppet valves and valve

seats and install new o-rings from the RSK. Observe that the hole in the center of each valve seat

has a beveled edge on one side. Use your finger to press a valve seat into the bore for the reject

check valve assembly. The seat should be pressed all the way in, with the beveled side of the valve

facing outward (that is, against the end of your finger). Use the same technique to install the other

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