HUBBELL OPERATION AND TEST INSTRUCTIONS
NOTE: The automatic set version (A suffix) will immediately supply power to the load when power is
applied to the line connections. Manual versions (no suffix) must be reset manually before power is
applied to the load.
1. Turn on power to the Circuit Guard® Module.
2. Press the “RESET” button, the power “ON” light should go on.
3. Press the “TEST” button, the power “ON” light should go off.
4. Press the “RESET” button, the power “ON” light should go on.
5. D
o not use this device if it fails the above tests.
This device does not protect against electric shock due to
contact with both circuit conductors and also due to a fault in any wiring supplying this device.
6. Connect the desired load equipment to the receptacle connected to Circuit Guard® Module and operate the
equipment normally.
1. If the GFCI fails to trip when the test button is pressed (power “ON” light does not go off) or fails to reset
(power “ON” light does not go on), the device is inoperative and should be replaced immediately.
2. If the GFCI tests properly without any appliance connected to it but trips each time an appliance is
connected to it, the appliance has a ground fault and needs to be repaired or replaced.
DO NOT USE THE
MACHINE IF THIS CONDITION OCCURS; A REAL SHOCK HAZARD MAY EXIST.
LEVITON OPERATION AND TEST INSTRUCTIONS
1. A Self-Test GFCI receptacle has all the features of a conventional GFCI receptacle. In addition, this receptacle tests
itself periodically to confirm the GFCI electronics are functional. The Status Indicator Light will be solid green when
the GFCI is powered from Line side and working correctly.
2. Self-Test Indications:
If the Status Indicator Light is solid or flashing RED a problem may exist. Press the TEST
button to trip the GFCI. If unable to Reset, replace the GFCI. NOTE: The status indicator may flash Red at power
“ON” and Reset.
IF GFCI WILL NOT RESET OR SOLID OR BLINKING RED LIGHT CONTINUES, REPLACE
DEVICE.
1. This device is to be used on normal electrical distribution systems on circuits rated at 120 V AC, 60 Hz
ONLY.
2. DO NOT USE in a wet environment if any of the Circuit Guard® Module’s push-button seals or its mounting
gasket is damaged.
3. Test at least monthly, or preferably before each use, to ensure correct operation.
4. The Circuit Guard Module is designed as a protective device. Do not use as an OFF/ON switch.
5. 5. To minimize false tripping, do not connect to swimming-pool equipment installed before adoption of the
1965
National Electrical Code®
.
A GFCI limits the duration but not the magnitude of ground fault current and, therefore, does not prevent
electric shock. It limits the duration of the shock to a period considered safe for healthy people.
GENERAL
The Hubbell Circuit Guard® & Leviton SmartLockPro® Modules provides personnel ground fault protection.
Conventional overcurrent protection devices such as fuses and circuit breakers cannot protect people from electrical
shock due to low level ground fault current. Fuses and circuit breakers are designed to disconnect the power when
current levels (amperes) flowing in the circuit exceed the rating of the fuse or circuit breaker. However, currents as low
as a few milliamperes can be harmful to normal healthy human beings. One ampere equals 1000 milliamperes. Many
electric shocks occur where the path of current flow is from the hot wire through the metal housing of a defective tool
or appliance, through the body of a human being to ground. Because of the resistance of the human body to electrical
current flow, the current will be quite low relative to that required to cause conventional over-current devices to function.
However, it may be high enough to cause a painful or possibly lethal electric shock to a human being. The Hubbell
Circuit Guard® & Leviton SmartLockPro® Module is designed to remove power from equipment loads when these loads
have a potential lethal current flow to ground in excess of six milliamperes. Normal loads will draw current from the Line
Conductor (black wire) and return it to the power source through the Neutral Conductor (white wire). Faulty loads can
return some of the current to the power source through a ground path such as a water pipe, gas pipe, wet floor, third
conductor (green wire), or worst of all, through a person who is in contact with a grounding path. The Hubbell Circuit
Guard® Module weather-resistant construction allows it to be used in outdoor or indoor locations, where ground fault
protection is desired. When energized by actuation of the reset button, it will conveniently supply power to any power
tool or appliance whose power requirement does not exceed 20 amperes at 120 volts RMS, 60 Hertz or 2400 watts.
HUBBELL & LEVITON GFCI OPERATING & TESTING INSTRUCTIONS
CIRCUIT GUARD® Module GFM20A, SMARTLOCKPRO® GFRBF-B
11 Gorlitz Operating & Maintenance Manual
