OBTAIN NOTE: If the foregoing precautions are not fully understood, MEDICAL ATTENTION. clarification should be obtained from your nearest GNB rep- resentative. Local conditions may introduce situations not Safety Precautions covered by GNB Safety Precautions. Here again, contact the nearest GNB representative for guidance with your par- A.
5.0 Rack Assembly Assembly of the battery rack should be completed in accor- 3.2 Electrolyte Levels dance with the GNB drawing and/or instructions included Cells are shipped with electrolyte levels about 1/8” below the with the rack. high level line. During shipment, the levels drop due to the loss SECTION 6 of gases from internal cell components.
Remove material holding cartons to pallets, exercising care 7.3 Temperature Variation when cutting banding material to prevent injury. If individual The location of rack arrangement should result in no greater cells are to be moved to another location, do not remove than 5°F (2.78°C) variation in cell temperatures in a series carton at this time.
When installing cells on the rack, start at the lower step or tier for stability and safety reasons. On cells using stainless steel bolts, washers and nuts, make sure a washer is placed between the bolt head and connec- Place cells on the rack so that the positive terminal (marked tor as well as between the nut and connector with the rolled “+”) of each cell adjoins the negative terminal (marked “-”) edge against the connector.
Certain calcium cells are equipped with two electrolyte with- drawal tubes which are installed in the diagonal corners of Certain cell sizes may have been shipped with GNB Pre- the cell. These permit the taking of specific gravity readings Vent™ vent/filling funnels in place. These vents have flexi- at a point about one-third from the top of the plates.
Modern constant voltage output charging equipment is Cell Volts sp. gr. sp. gr. recommended for the float charge method of operation of GNB stationary type batteries. This type of charger, properly 2.24 — adjusted to the recommended float voltages, together with 2.27 —...
Lead-calcium types may be floated at any of the voltage val- 10.1 Equalizing Frequency ues (Table B) shown for a particular nominal specific gravity. Equalize when the temperature corrected specific Float in the lower voltage range for the given specific gravity gravity of the pilot cell (or any cell for the quarterly where system equipment high voltage limits exist.
In a lead-acid cell, the electrolyte is a dilute solution of water For this reason, most GNB lead-calcium cells have electro- and sulfuric acid. Specific gravity is a measure of the weight...
When taking a hydrometer reading, the base of the hydro- NORMAL VOLTAGE RANGE meter syringe should be pressed firmly against the tube Average Type Float Voltage Variation opening to prevent back splash of electrolyte. Fill and empty the hydrometer at least once in each cell before read- Lead-Calcium ing.
The maximum allowable limits of impurities in the water D. Annual - Supplement quarterly reports with these extra used in GNB stationary batteries shall be as follows: procedures. Make a detailed visual inspection of each cell.
Distilled water or deionized water satisfying the above 18.2 Polycarbonate Containers requirements may be used. and Covers SECTION 16 Cells with containers and covers made from polycarbonate plastic should be cleaned ONLY with a WATER dampened 16.0 Tap Connections cloth. Any surface that is damp with electrolyte should be neutralized with a baking soda—water solution (1 lb.
tion of a fixed direct current (DC) through the external cell only restores mechanical compression but will not improve connections. Some precautions must be observed to get electrical integrity. consistent and meaningful values, however, and these are described in Section 19.3. Tests reveal that a reduction in the original torque value of 30% still provides a functional electrical connection if there Resistance measurements or microhm measurements...
Page 17
AB and CD and the resistance value will be about half of the actual value, provided all connections are good. If the process is repeated for posts C and D and the two resistance values are compared, the difference, if any, indicates differences in the two parallel paths as well as poor connections at the post connector interfaces.
GNB Industrial Power A Division of Exide Technologies A Division of Exide Technologies A Division of Exide Technologies GB-1000F...
Page 19
4. Numerals are shipped mounted on a plastic backing cell numerals, and polarity markings supplied with your strip. They are easily removed by peeling back the plas- GNB Stationary Battery, the following procedure should be tic strip. Keep finger contact with adhesive backing on followed: numeral to a minimum.
Page 20
North America and Europe and a truly global reach (opera- tions in more than 80 countries) in sales and service, GNB GNB Industrial Power takes pride in its commitment to a better Industrial Power is best positioned to satisfy your back up environment.