Airstream 2001350 XL, Руководство пользователя

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350 XL SERIES 2001 OWNERS MANUAL
H-36
LOCATING SHORTS AND OPENS
The key in locating shorts and opens is isolation. The first step is to isolate the circuit with the short or
open. The second step is to then isolate the section of the circuit with the fault. Once the section is
identified, the specific problem can be located. The cause may be a loose or corroded connection, cut wire,
worn insulation, defective component, etc. The following procedure is one method for isolating shorts and
opens.
SHORTS
1. Isolate the circuit that has the short by noting which circuit breaker has tripped.
2. Disconnect the power inlet cord from the power source.
3. Using the 120V schematic as a reference, disconnect outlet boxes one at a time starting at the box
furthest from the distribution panel. After disconnecting each box, check for continuity between the black
wire and ground or common (white) wire on the distribution panel side of the circuit. When a continuity
light or ohmmeter indicates no continuity, the short is either in the receptacle just removed or the section of
Romex wire between this receptacle and the previous receptacle removed.
4.Examples of a short are:
A) The black wire of the 120V system contacting the white wire, bare wire or grounded surface.
B) An internal short in a 120V appliance.
Any damaged wire must be replaced. The National Electrical Code does not permit splicing 120V wiring
outside an outlet box or junction box. Also, the wire must not be exposed to an area such as a sharp metal
edge that may damage the wire.
OPENS
1. Check all receptacles and components for voltage on the circuit that has the open.
2. If all receptacles and components of the circuit are without power, begin to look for open in the
distribution panel.
3. Inspect for loose or corroded connections and a faulty circuit breaker.
4. Check for power on both ends of circuit breaker. If there is no power on the inlet side of the circuit
breaker, the open is between the power cord's male connector and the distribution panel.
5. The open can be isolated by noting the outlets which do not have power, Example: If the bath outlet in
the rear bath model has power and the converter has no power, the open is between the bath outlet and
converter outlet.
6. Examples of an open are:
A) Loose or corroded connections.
B) A wire disconnected from a terminal.
C) Contacts in the circuit breaker that do not make contact.
D) A broken wire.