Patriot SPS 850 User manual

PAT 611
P
July 16, 1992
Replacing the Batteries in the Patriot
SPS 850
This PAT describes how to replace the batteries in Patriot SPS 850 units. Replacing the batteries
should take about 30 minutes.
Batteries should be replaced by a qualified technician. If you have any questions or problems,
pleasecall BEST's Technical Support Center at 800-356-5737. (Outside of the U.S. and
Canada, call your local BEST office.)
To replace the batteries, you will need the following:
!Needle Nose Pliers
!Black Electrical Tape
!Phillips Screwdriver — 6" long below handle*
*Note: The screwdriver should be six inches long below the handle so you can replace the
inside screws easily. Using a magnetic screwdriver makes removing and replacing the
screws easier.
Before you go on to Section 1, read the important safety warnings on the next page.
Contents Index
1. Removing the Patriot's Cover ...........................................3
2. Removing the Batteries ................................................3
3. Replacing the Batteries ................................................6
4. Replacing the Patriot's Cover ............................................7
PPT-0611A

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Copyright 1992, Best Power Technology, Inc. RESTRICTED
IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS
This publication contains important instructions that should be followed during battery replacement.

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WARNING
The batteries used in this system are capable of producing dangerous
voltages and high currents. They may cause severe injury if terminals are
shorted together or to ground (earth). Extreme care must be taken to avoid
electrical shock and burns from contacting battery terminals or shorting
terminals during battery replacement.
BEST's batteries come with a one-year warranty. Using batteries not
supplied by BEST invalidates any BEST service agreement.
A qualified technician who is familiar with the Patriot should replace the
batteries. The technician must take these precautions:
1. Protective clothing and eye wear must be worn. Batteries contain caustic
acids and toxic materials and can rupture or leak if mistreated. Remove
rings and metal wristwatches or other jewelry. Don't carry metal objects in
pockets where they can fall into the Patriot.
2. Tools must be insulated so that they will not short battery terminals. At no
time can a tool be allowed to short a battery terminal to another battery
terminal or to the Patriot's cabinet. Do not lay tools or metal parts on top
of batteries.
3. When connecting cables, never allow a cable to short across a battery's
terminals or the string of batteries or to the Patriot's cabinet.
4. Align the cables on the battery terminals so that the connector will not
contact any part of the Patriot's cabinet even if the battery is moved. Keep
the cable away from any sharp metal edges.
5. Install the battery cables so they cannot be pinched by the Patriot's
cabinet.
Section 1: Removing the Patriot's Cover

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1. Before you replace the batteries, shut off the equipment plugged into the Patriot and
unplug the equipment.
2. Next, follow these three steps:
!Turn the On/Off (1/0) switch on the back of the Patriot off (to 0).
!Unplug the Patriot.
!Remove the power cord from the back of the unit.
3. Carefully turn the Patriot on its side, and look at the bottom of the unit. Remove the
four screws and washers in the corners (shown in Figure 1 below).
Figure 1
4. Stand the Patriot on its feet again.
5. Make sure the On/Off (1/0) switch on the back of the Patriot is off.
6. Slide the unit's cover back until it comes off.
Section 2: Removing the Batteries
Figure 2 on the next page shows the battery and battery connections.
SPS 850:

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Figure 2
Check Figure 2 and read step 7 before you continue.
7. Using the needle nose pliers, disconnect both positive (red) cables from the batteries
by gently pulling the connectors down, away from the battery terminals. (See Figure
2 for terminal locations.)
Put a piece of black electrical tape over the end of both positive (red) cables so
they cannot accidentally touch another metal part.
8. Now, turn the On/Off switch on the back of the Patriot on (to 1) for about four
seconds to discharge the capacitor. (The capacitor is discharged when the front panel
light is no longer lit.)
Then, turn the switch off again.

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WARNING!
Make sure you turn the switch off before you continue. When you
connect the new batteries, there will be dangerous voltage inside the
Patriot if the On/Off switch is on. This is true because the Patriot's
battery supplies power even if the unit is not connected to its AC input
source.
9. Disconnect both negative cables (white with black stripes) using the needle nose
pliers. (See Figure 2 to locate the cables.)
10. Now, refer to Figure 2 to find the Phillips screws holding the battery brackets in
place. Remove all four screws and washers.
11. Remove the side bracket first. To remove the bracket, carefully slide it away from
the batteries and lift it out. Note: If there is a thin piece of insulation next to the side
bracket, remove the insulation and save it to use again.
The tabs in the front of the L-shaped bracket fit into the slots in the bottom of the
Patriot. (See Figure 2.) Slide the bracket and batteries toward the back of the unit
until the tabs come out of the slots.
Now, remove the top (L-shaped) bracket.
12. Before you remove the old batteries, note the arrangement of the batteries and their
terminals. When you put the new batteries in (in step 13), use the same arrangement.
Read the caution below; then, lift out the old batteries.
Caution: Make sure that the terminals do not touch the cabinet or any
metal part. Assume that the old batteries are fully charged, and
use the same precautions you would use when handling new
batteries. Batteries contain lead. Dispose of the old batteries
properly.
Do not dispose of a battery or batteries in a fire; the battery
may explode. Do not open or mutilate batteries. Released
electrolyte is harmful to the skin and eyes. It may be toxic.

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Section 3: Replacing the Batteries
13. When you put in the new batteries, be careful not to hit the LED wires between
the circuit board and the front of the Patriot; these wires could be damaged if
the new battery or the bracket hits them.
Put the new batteries in place. Figure 2 shows how the batteries should be arranged
and where the battery terminals should be.
14. Put in the L-shaped bracket that fits over the top and one side of the batteries. Make
sure that the L-shaped bracket fits into the two slots in the bottom of the Patriot; then,
put the side bracket back in place. If there was a thin piece of insulation next to the
side bracket, put the insulation back in place. (See step 11.)
15. Before you put the Phillips screws and washers back in, make sure you read the
following two tips:
!Put the top two screws in first.
!The two shortest screws are meant to attach the side bracket to
the bottom of the Patriot.
Now, put in the Phillips screws to attach the side bracket to the L-shaped bracket, the
bottom of the Patriot, and the side of the unit.
16. Before you connect any battery cables, make sure the On/Off switch on the back of
the unit is still off.
17. Carefully check the terminal arrangement in Figure 2. When you reconnect the
cables, make sure you connect them to the correct terminals.
WARNING!
Connect the cables exactly as shown in Figure 2. Connecting the
cables to the wrong terminals can short the batteries. Shorting the
batteries will damage the batteries and the Patriot; shorting the
batteries could also cause severe personal injury.
Use the needle nose pliers to reconnect the negative cables (white with black stripes)
to the terminals marked "Black (negative)" in Figure 2.

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Caution: When you reconnect the first positive battery cable, (in
step 18), there will be an arc at the battery terminal.
18. Now, remove the tape from the red (positive) cables and use the needle nose pliers
to connect these cables to the red (positive) terminals. (See Figure 2.)
Section 4: Replacing the Patriot's Cover
19. As you put the cover back on the Patriot, make sure the vent holes are on the side
opposite the circuit boards. To secure the cover, carefully turn the Patriot on its side
and put the four cover screws back in the bottom of the unit.
20. Stand the Patriot on its feet again.
21. Plug the Patriot's power cord back into the unit and the input receptacle.
22. Turn the Patriot's On/Off switch on (to 1). To make sure the Patriot's battery is fully
charged, let the unit charge the battery for at least 12 hours. (The battery charges
automatically whenever the front panel light is on but not blinking.)
23. To finish the procedure, follow these three steps:
!Turn the Patriot's On/Off switch off (to 0).
!Turn off the loads (the equipment the Patriot protects) and plug them into the
Patriot's receptacles.
!Turn the Patriot's On/Off switch on (to 1), and switch on the equipment
plugged into the unit.