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Cork insulation; a complete illustrated textbook on cork insulation ...

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COVERING ERECTION 509<br />

Painting.—After the seam filler has been applied, give the exposed<br />

surfaces of the <str<strong>on</strong>g>complete</str<strong>on</strong>g>d <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g> work <strong>on</strong>e good coat of asphaltic<br />

paint. This is the <strong>on</strong>ly finish that is required <strong>on</strong> inside lines; but<br />

outside lines, or lines passing through cold rooms, tunnels, pipe<br />

shafts, etc., must be further protected by weather-proofing.<br />

Weather-proofing.—Wrap with <strong>on</strong>e layer of 2-ply roofing paper,<br />

with a 3-inch lap <strong>on</strong> side and ends. Point the exposed end of the<br />

side lap down. Apply asphaltic paint <strong>on</strong> all laps to cement them in<br />

place, and additi<strong>on</strong>ally secure lateral laps with copper staples. Paint<br />

the finished work with <strong>on</strong>e good coat of asphaltic paint.<br />

White Finish Over Mineral Rubber.— If white finish, or color other<br />

than black, is desired for <strong>cork</strong> pipe covering, it may be obtained by<br />

painting the mineral rubber finish with two good coats of orange<br />

shellac followed by any selected paint or enamel. Some enamels,<br />

specially prepared, are suitable without the use of orange shellac.<br />

Segmental Covering.—Piping and fittings larger than the sizes for<br />

which secti<strong>on</strong>al covering and secti<strong>on</strong>al fitting jackets are furnished<br />

are insulated with segmental covering. Instructi<strong>on</strong>s for proper applicati<strong>on</strong><br />

are supplied by the manufacturer with every such shipment,<br />

and should be followed carefully.<br />

Lags and Discs.—Brine coolers, tanks, accumulators, etc., are insulated<br />

with <strong>cork</strong> lags and discs. Separate sheets sent by the manu-<br />

facturer with every shipment of lags give <str<strong>on</strong>g>complete</str<strong>on</strong>g> and detailed<br />

instructi<strong>on</strong>s for proper applicati<strong>on</strong>. See that they are received, and<br />

follow such instructi<strong>on</strong>s carefully.<br />

Care and Maintenance.—The seroicc that cold pipe <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g> en-<br />

counters is the most severe service that <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g> of any kind is called<br />

up<strong>on</strong> to zinthstand. Therefore, it is important that it should have care<br />

and attenti<strong>on</strong> if it is to be kept in good c<strong>on</strong>diti<strong>on</strong>. Properly applied and<br />

properly cared for, <strong>cork</strong> pipe covering vuill last l<strong>on</strong>ger than the pipe.<br />

Inspect the installati<strong>on</strong> at regular intervals for:<br />

1. Loose or broken wires.<br />

2. Joints opening up.<br />

3. Cracks in mineral rubber finish and seam filler coming loose.<br />

If a loose or broken wire is found, replace it without delay. If<br />

any open joints are found, the secti<strong>on</strong> of covering or the fitting<br />

jacket should be removed the very next time the refrigerati<strong>on</strong> is oflf,<br />

dried out and replaced, or new <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g> installed.<br />

Close up any cracks that may have developed in the mineral rubber<br />

finish with seam filler. At least <strong>on</strong>ce each year give the entire<br />

exposed surface of the cold pipe <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g> <strong>on</strong>e good coat of asphaltic<br />

paint.<br />

Such attenti<strong>on</strong> is inexpensive and will add materially to the l<strong>on</strong>g<br />

life and the high efficiency of cold pipe <str<strong>on</strong>g>insulati<strong>on</strong></str<strong>on</strong>g>.

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