The Automobile Storage Battery Part 73

Never allow temperature to go above 110 F.

Unlike the gla.s.s jar cells the sediment s.p.a.ce in the rubber jar is not sufficient to take care of all the active material in the positive plates. On repairs, therefore, always clean out the sediment and prevent premature short circuits.

[Fig. 325 Manchester positive plates, and Fig. 326 Exide cell with sealed rubber jar]

WESTINGHOUSE FARM LIGHTING BATTERIES

Jars. Westinghouse Farm Lighting Battery jars are made of gla.s.s, with a 5/16 inch wall. The jars are pressed with the supporting ribs for the elements an integral part from a ma.s.s of molten gla.s.s. A heavy f.l.a.n.g.e is pressed around the upper edge to strengthen the jar.

Top Construction. A sealed-in cover is used similar to that used in starting and lighting batteries. The opening around the post hole is sealed with compound.

Plates. Pasted plates are used. The positives are 1/4 inch thick, and the negatives 3/16 inch. Posts are 13/16 inch in diameter.

Separators. A combination of wood and perforated rubber sheets is used.

Opening and Setting-Up Westinghouse Farm Lighting Batteries

[Fig. 327 Westinghouse farm lighting cell]

It is preferable that the temperature never exceed 100 deg. Fahrenheit nor fall below 10 deg. in the place where the battery is set up. If the temperature is liable to drop below 10 degrees the battery should be kept in a fully charged condition.

1. Remove all excelsior and the other packing material from the top of the cells. Take cells out carefully and set on the floor. Do not drop or handle roughly. Be sure to remove the lead top connectors from each compartment.

2. Cells should be placed 1/4 inch apart. Also, cells should be placed alternately so that positive post of one cell is adjacent to negative post of the next cell. Positive post has "V" shape shoulder and the negative post has a square shoulder.

3. Grease all posts, straps and nuts with vaseline.

4. Connect positive posts of each cell to negative post of adjacent cell, using top connectors furnished. Top connectors are made so as to fit when connection is made between positive post of one cell and negative post of next cell. Use long connector between end cells of upper and lower shelves.

5. With all connections between cells in position, join the remaining positive post with a connection marked "Positive" leading from the electric generator. Do likewise with the remaining negative post.

6. If liquid level in any cell is 1 inch or more below the "Liquid Line" on side of gla.s.s jar, some liquid has been spilled and must be replaced. This should be done by an experienced person.

7. Immediately after installation operate electric generator and charge battery until gas bubbles rise freely through the liquid in all cells. A reading with the hydrometer syringe which is furnished with the battery should be taken, When the hydrometer float reads between 1.240 and 1.250, the battery is fully charged.

8. The time required to complete the charging operation mentioned above may vary from one to several hours, depending upon the length of time the battery has been in transit. During the charge the temperature of the cells should not be permitted to rise above 110 deg. Fahrenheit. If this condition occurs discontinue the charge or decrease the charge rate until cells have cooled off.

9. When charge is complete replace vent plugs.

The Relation Between Various Sizes of Westinghouse Farm Light Batteries and Work to be Done

The size of the battery furnished with complete farm lighting units vary greatly. Sometimes the battery size is varied with the size of the engine and generator, while again the same size of battery may be used for several sizes of engines and generators. In making replacements, while it is always necessary to retain the same number of cells, it is not necessary to retain the same size of cells.

Usually increasing the cell size increases the convenience to the owner and prolongs the life of the battery to an amount which warrants the higher cost.

With a larger battery, danger of injury through overcharging is lessened, the load on the battery is more easily carried and the engine and generator operate less frequently.

In order to give an idea of various battery capacities, below is a table showing the number of 32 volt, 25-watt lamps which may be lighted for various lengths of time from sixteen cells. The number of hours shows the length of time that the lamps will operate.

Table A

Type 3 Hours 5 Hours 8 Hours ---- ------- ------- ------- G-7 22 Lamps 14 Lamps 10 Lamps G-9 28 Lamps 19 Lamps 13 Lamps G-11 32 Lamps 24 Lamps 15 Lamps G-13 41 Lamps 29 Lamps 19 Lamps G-15 47 Lamps 33 Lamps 22 Lamps G-17 54 Lamps 38 Lamps 25 Lamps

Note:--Based on 32-Volt 25-Watt Lamps.

For example--The table shows opposite G-7 that, with the battery fully charged, twenty-two lamps may be lighted for three hours, fourteen lamps for five hours and ten lamps for eight hours, by a sixteen cell G-7 battery, without operating the engine and generator.

Motors for operating various household and farm appliances are usually rated either in horsepower or watts. The following table will give a comparison between horse-power and watts as well as the number of 25-watt lamps to which these different sizes of motors and appliances correspond.

Table B

H.P. of Motor No. of Watts Corresponding No. of 25-Watt Lamps ---- --- -- 1/8 93 4 1/4 185 7 1/2 373 15 3/4 559 22 1 H.P. 746 30

From table B it will be seen, for example, that a one horsepower motor draws from the battery 373 watts or the same power as do fifteen 25-watt lamps. Then referring to table A, it will be found that a G-11 battery could operate 15 lamps or this motor alone for 8 hours.

Due to the fact that a motor or electric appliance may become overloaded and therefore actually use many more watts than the name plate indicates, it is not advisable to operate any motor of over 1/4 H. P. or even an appliance of over 186 watts on the G-13 or smaller sizes unless the engine and generator are running.

It is safe, however, to operate motors or other appliances up to 375 watts on the G-15 or G-17 batteries without operating the engine and generator.

WILLARD FARM LIGHTING BATTERIES

[Fig. 328 Willard Farm Lighting Cell]

The Willard Storage Battery Co. manufactures farm lighting batteries which use sealed gla.s.s jars, or sealed rubber jars. Those using the sealed gla.s.s jars include types PH and PA. The sealed rubber jar batteries include types EM, EEW, IPR, SMW, and SEW. Both types of batteries are shipped fully charged and filled with electrolyte, and also dry, without electrolyte. The following instructions cover the installation and preparation for service of these batteries.

Gla.s.s Jar Batteries. Fully Charged and Filled With Electrolyte

Each sixteen cell set of batteries is packed in two shipping crates.

One crate, which is stenciled "No. 1" contains:

* 8 Cells.

* 18 Bolt Connectors.

* 1 Hydrometer Syringe.

* 1 Instruction Book.

The other crate which is stenciled "No. 2" contains: 8 Cells