Fluke ST120-LW - User Manual

PN 5311597
September 2020, Rev. 1, 8/21
©2020-2021 Fluke Corporation. All rights reserved.
Specifications are subject to change without notification. All product names are trademarks of their respective companies.

Introduction

Before you use the Fluke ST120/ST120+/ST240/ST240+ Socket Tester (the Product), see

Safety

Information

.

Safety Information

Make sure to read the Safety Information that is enclosed on the Product packaging.

Symbols

Table 1 explains the symbols used on the Product and in these instructions.

Table 1. Symbols

Product Use

To use the Product:
1. For best results, unplug all appliances and equipment on the circuit under test.

2. Plug the Product into the socket and note which indicators light.

3. To determine the wiring, see the diagram on the Product shown for reference in Figure 1.

Figure 1.

GFCI /RCD Test

To test a GFCI or RCD:
1. Before you plug the Product into a GFCI or RCD socket, push the GFCI/RCD test button, if applicable,

to trip the GFCI or RCD socket. If the GFCI or RCD does not trip, the socket is faulty and should be

replaced.

2. After the GFCI/RCD trips, push the RESET button on the socket.

3. Plug in the Product and push the blue GFCI/RCD test button on the Product for a minimum of 6 sec-

onds. As you push the Product button, but before the GFCI/RCD trips, the LED to the left of the Product

button briefly turns on. Once the GFCI/RCD trips, all of the LEDs on the Product go out. If the

GFCI/RCD does not trip, or if any of the LEDs on the Product remain on, there is a problem with the

wiring of the socket, the socket itself, or the Product. Consult an electrician to determine the problem.

Beeper (ST120+ and ST240+)

The ST120+and ST240+ include a switchable beeper that emits a tone when voltage is present on the
Product and the beeper is switched on. To switch off the beeper, slide the beeper switch to the left position.

Contact Fluke

Fluke Corporation operates worldwide. For local contact information, go to our website:

www.fluke.com

To register your product, view, print, or download the latest manual or manual supplement, go to our
website.
+1-425-446-5500

[email protected]

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for two years from the date of

purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect,

misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not

authorized to extend any other warranty on Fluke’s behalf. To obtain service during the warranty period,

contact your nearest Fluke authorized service center to obtain return authorization information, then send

the product to that Service Center with a description of the problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR

PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries

do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of

liability may not apply to you.

11/99

Symbol

Description

W

WARNING. RISK OF DANGER.

X

WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.

»

Consult user documentation.

J

Earth

~

This product complies with the WEEE Directive marking requirements. The affixed

label indicates that you must not discard this electrical/electronic product in domestic

household waste. Product Category: With reference to the equipment types in the

WEEE Directive Annex I, this product is classed as category 9 "Monitoring and Control

Instrumentation" product. Do not dispose of this product as unsorted municipal waste.

RCD

Fluke Corporation

P.O. Box 9090

Everett, WA 98206-9090

U.S.A

PO Box 1186

5602 BD Eindhoven,

The Netherlands

ST120/ST120+/ST240/ST240+

Socket Tester

Instructions