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Summary of Contents for SEC 933 Sentry
- Page 1 SEC America Corp. Model 933 Sentry / Model 1733 Sentry Owner's Manual April 15, 2022...
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Page 2: Table Of Contents
Index Page Quick Installation & Battery Essentials………………….. Precautions and Sequencing During Initial Hookup…. Quick Functional Test……………………………………… How the Sentry Works……………………………..…….. Important Safety Instructions……………………………..Safety Warnings……………………………………………… Battery Precautions………………………………………….. Battery Box……………………………………………………. Installation Location…………………………………………. Making Connections…………………………………………. Installation Test………………………………………………. Changing the Battery………………………………………… Charger Functions.…………………………………………… Uninterruptible Power Indicator ……………………………... -
Page 3: Quick Installation & Battery Essentials
12V, and whose single or combined A-Hr. rating does not exceed 250 A-hr. The load on the 933 sentry should not exceed 10 amps running and a 25 amps startup surge rating. The load on the 1733 sentry should not exceed 14 Amps running with a 35 amps startup surge. -
Page 4: Precautions And Sequencing During Initial Hookup
PRECAUTIONS & SEQUENCING DURING INITIAL HOOKUP a) Secure the Sentry in its designated spot. It is recommended that the unit be placed on a shelf or mounted to a wall. b) Make sure the ON/OFF switch is in the OFF position and that the Sentry power cord is not plugged into an AC outlet. -
Page 5: Quick Functional Test
QUICK FUNCTIONAL TEST To make sure the installation is good; it should be tested per the following: a) Plug a load such as a lamp into the sentry with its switch in the ON position. Also turn ON the switch on the sentry with the top of the rocker showing red. -
Page 6: How The Sentry Works
How the Sentry Works When electricity is present, the Sentry charges a 12-volt battery (bank) and surveys the power line. At the instant that a power failure occurs, the Sentry converts the energy stored in the battery to AC power to operate your appliance. -
Page 7: Safety Warnings
Never operate the Sentry in a location where liquid or moisture will come in contact with, splash, or drip into unit. Do Not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause electrical shock and/or fire hazard. WARNING: RISK OF ELECTRICAL SHOCK In the event of a short circuit, grounding reduces the risk of electrical shock... -
Page 8: Battery Precautions
BATTERY PRECAUTIONS: WARNING: IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS. 1. Servicing of batteries should be performed or supervised by a person knowledgeable about batteries and the required precautions. Keep unauthorized personnel away from batteries. 2. When replacing batteries, use only models conforming to Battery Council International (BCI) specifications for Group size 27 or larger Deep Cycle Marine batteries. -
Page 9: Battery Box
6. CAUTION – Lead acid batteries can present a risk of fire and explosion because they generate hydrogen gases. The following precautions must be followed. A. Do Not smoke when near batteries. B. Do Not cause sparks or allow open flame in the battery area. C. -
Page 10: Making Connections
VENTILATION Do Not block either the fan or the exit air ports of the Sentry. Allow at least 2 inches of air clearance on all sides. Any room in which the Sentry is mounted should have adequate ventilation. WARNING! The Sentry has several components with electrical contacts that switch electrical currents. -
Page 11: Installation Test
WARNING! A spark may occur when connecting the second cable. This is normal. An explosion hazard may exist if flammable liquid or gas is present. INSTALL AND OPERATE SENTRY IN A WELL VENTILATED AREA ONLY. Plug your appliance into the Sentry’s AC outlet. ... -
Page 12: Changing The Battery
CHANGING THE BATTERY If for any reason the battery needs changing, it is important to follow the steps below, in the order shown to avoid damage to the Sentry unit. 1. Turn the ON/OFF switch on the Sentry to the OFF position. 2. -
Page 13: Charger Functions
Charger Function s The smart charging system in Sentry is microprocessor controlled to yield optimum charging rates and long battery life. When the electrical source is restored allowing the resumption of the charging process, there is a 2 second delay during which the charge state of the battery is assessed. After this delay, the bottom most of the LED indicators comprising the battery monitor will illuminate. -
Page 14: Uninterruptible Power Indicator
Uninterruptible Power Indicator The “Power Output” indicator shown in Figure #1, when lit, informs the user that AC power is present at the output receptacle providing power to the load. This LED function is applicable to both the standby (AC line power present) and Back Up (Battery Power) states to inform the user that the Sentry is outputting power. - Page 15 Figure #2 Figure #1 Charger Fuse POWER OUTPUT Active When Lit Main Fuse Replace Battery Charged = ON Charging = Flashing BATTERY MONITOR When Utility AC is Down ALL Battery Indicators Are OFF Inverter ON/OFF SIDE VIEW TOP VIEW...
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Page 16: How To Discern When Sentry Is Operational In Back Up Mode
How to Discern When Sentry is Operational in the Backup Mode When all LED’s of the battery monitor are OFF, and the Sentry is plugged into an AC outlet, the unit is in the back up mode. In this mode when there is sufficient energy in the battery to operate the system, the uninterruptible power LED is illuminated. -
Page 17: Warranty
DO THIS WILL LEAVE THE USER WITHOUT BACK UP PROTECTION. Sentry Model 933, Model 1733 Manufactured by SEC America Corp. S. Burlington, VT, 05403 Manufacturers Limited Warranty Sentry is warranted to be free from defects in material and workmanship and to perform within applicable specifications for a period of two years after original shipment.
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