Ditch Witch 250T Operator's Manual
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Ditch Witch 250T Operator's Manual

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250R/T
Operator's
Manual
®
Issue 1.0
CMW
053- 1189

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Summary of Contents for Ditch Witch 250T

  • Page 1 250R/T Operator’s Manual ® Issue 1.0 053- 1189...

  • Page 2: Overview

    250R/T Operator’s Manual Overview - 1 Overview Chapter Contents Serial Number Location ..... . 2 Intended Use ......3 About This Manual .
  • Page 3 250R/T Operator’s Manual Overview - 2 Serial Number Location Serial Number Location Record serial numbers and date of purchase in spaces provided. Unit serial number is located as shown. ss1129h.eps Item date of purchase: receiver serial number: transmitter serial number: accessory model &...
  • Page 4 50P or 60P and 50S or 60S. The 250T transmitter places signals on target lines and is used with 250R units. It is configured to send 33 kHz frequency signals. It places a signal on the line through either direct connection, induction clamping, or broadcast modes.
  • Page 5 250R/T Operator’s Manual Overview - 4...

  • Page 6: Foreword

    If you sell your equipment, be sure to give this manual to the new owner. If you need a replacement copy, contact your Ditch Witch. If you need assistance in locating a dealer, visit our website at www.ditchwitch.com or write to the following address: The Charles Machine Works, Inc.
  • Page 7 Copyright 2007 by The Charles Machine Works, Inc. , Ditch Witch, CMW, AutoCrowd, Modularmatic, Jet Trac, Roto Witch, Subsite, Fluid Miser, Perma-Soil, Power Pipe, Super Witch, Super Witch II, Pierce Airrow, The Underground, and The Underground Authority Worldwide are registered trademarks of The Charles Machine Works, Inc.

  • Page 8: Table Of Contents

    250R/T Operator’s Manual Contents - 7 Contents Overview machine serial number, information about the type of work this machine is designed to perform, basic machine components, and how to use this manual Foreword part number, revision level, and publication date of this manual, and factory contact...
  • Page 9 250R/T Operator’s Manual Contents - 8...

  • Page 10: Safety

    250R/T Operator’s Manual Safety - 9 Safety Chapter Contents Guidelines ....... . 10 Safety Alert Classifications .
  • Page 11 250R/T Operator’s Manual Safety - 10 Guidelines Guidelines • Read and follow all safety precautions. • Do not operate equipment unless you have completed proper training and have read and understood the operator’s manual. • Before operation, ensure the equipment is in proper working order and is not damaged. Any transmitter leads should be checked for damage.
  • Page 12 IMPORTANT: Ditch Witch receivers and transmitters are calibrated to tolerances under strict environmental conditions. Under normal daily use, Ditch Witch equipment does not require an annual calibration. A daily functional check is recommended and any units which have been damaged or do not appear to perform to original factory specifications should be returned to the manufacturer or authorized repair center for calibration check or repair.
  • Page 13 250R/T Operator’s Manual Safety - 12 Safety Alerts...

  • Page 14: Controls

    250R/T Operator’s Manual Controls - 13 Controls Chapter Contents Receiver ....... . . 14 •...

  • Page 15: Receiver

    250R/T Operator’s Manual Controls - 14 Receiver Receiver Single-Key Controls 1. Mode 4. Down arrow 2. ON/OFF 5. DEPTH 3. Up arrow Item Description Notes 1. Mode To cycle through operating See “Mode” on page 35. frequencies, press.
  • Page 16 250R/T Operator’s Manual Controls - 15 Receiver Item Description Notes ON/OFF To turn on, press. To turn off, press again. Up Arrow To increase gain, press. Down Arrow To decrease gain, press. DEPTH To estimate depth of properly located 33 kHz signal, press.

  • Page 17: Double-Key Controls

    250R/T Operator’s Manual Controls - 16 Receiver Double-Key Controls Item Description DEPTH + Down Arrow To turn on backlight, press indicated keys.

  • Page 18: Display

    250R/T Operator’s Manual Controls - 17 Receiver Display 1. Gain level 3. Depth 2. Signal strength 4. Mode Item Description Notes 1. Gain Level Graphically indicates gain IMPORTANT: Gain increases to the level. right.
  • Page 19 250R/T Operator’s Manual Controls - 18 Receiver Item Description Notes 2. Signal Strength Numerically and graphically indicates the signal strength level. 3. Depth Displays depth estimate of properly located line. 4. Mode Indicates mode setting. See “Mode” on page 35.

  • Page 20: Transmitter

    250R/T Operator’s Manual Controls - 19 Transmitter Transmitter 1. LEDs 3. Power level 2. On/Off Item Description Notes 1. LEDs Green LED indicates low IMPORTANT: If both LEDs are power. flashing, change batteries. Red LED indicates high power. 2. On/Off To turn on, press.
  • Page 21 250R/T Operator’s Manual Controls - 20 Transmitter Item Description Notes 3. Power Level To switch between low and high power, press.

  • Page 22: Locate

    250R/T Operator’s Manual Locate - 21 Locate Chapter Contents Active ........22 •...

  • Page 23: Active

    250R/T Operator’s Manual Locate - 22 Active Location Active Location Setup Follow setup procedures for the type of locating you will be doing: direct connection, induction clamp, or broadcast induction. Always check receiver battery level at startup. See “Controls” on page 13.
  • Page 24 250R/T Operator’s Manual Locate - 23 Active Location Induction Clamp Electric shock. The connection leads may give off an electric shock when plugged into the transmitter. Avoid touching the metal ends of clips when the transmitter is switched on. NOTICE: •...
  • Page 25 250R/T Operator’s Manual Locate - 24 Active Location Broadcast Induction To set up transmitter for broadcast induction: 1. Remove cable, stake, clamp and any other metal objects from transmitter. 2. Place transmitter parallel to and directly above suspected line, as shown.

  • Page 26: Technique

    250R/T Operator’s Manual Locate - 25 Active Location Technique ss1131h.eps IMPORTANT: Follow steps 1-3 for all types of active location. For reference, the illustration above shows direct connection method. If using broadcast induction, ensure that transmitter is in line with and above suspected line, as shown on previous page.
  • Page 27 250R/T Operator’s Manual Locate - 26 Active Location 4. Rotate the receiver to determine which direction the line runs. IMPORTANT: Receiver indicates the best signal when the handle is perpendicular to the target line. 5. Set receiver on the ground.

  • Page 28: Special Situations

    250R/T Operator’s Manual Locate - 27 Active Location Special Situations Situation What to try Signal is lost. Walk in a circle to detect a tee or bend in the line. Signal varies from low to high and is Mark as a hand-dig area.

  • Page 29: Passive

    250R/T Operator’s Manual Locate - 28 Passive Location Passive Location Setup Turn on receiver and choose power or radio frequency. Always check receiver battery level at startup. NOTICE: Lines with no AC current flowing through them are hard to detect and may be hazardous because they may still have voltage potential.
  • Page 30 250R/T Operator’s Manual Locate - 29 Passive Location Focus the Signal Move receiver over detected signal to find best signal response. Rotate receiver until signal is strongest. Best signal indicates line direction. NOTICE: Keep receiver level. Trace the Line Walk along the suspected path while moving the receiver from side to side across the area.

  • Page 31: Special Situations

    250R/T Operator’s Manual Locate - 30 Passive Location Mark the Line Sweep, focus, and trace all detected signals in the area. Mark line paths with colored paint or flags. See the chart below for standard color markings for line locations.

  • Page 32: Beacon

    250R/T Operator’s Manual Locate - 31 Beacon (Sonde) Location Beacon (Sonde) Location Trace metallic or non-metallic pipes or conduits by locating and following a beacon (sonde) signal. IMPORTANT: Large metal objects and other signals (such as railroad signals or overhead power lines) will distort signal.
  • Page 33 250R/T Operator’s Manual Locate - 32 Beacon (Sonde) Location...

  • Page 34: Locating Concepts

    250R/T Operator’s Manual Locating Concepts - 33 Locating Concepts Chapter Contents Signal Type ....... 34 •...

  • Page 35: Signal Type

    Locating Concepts - 34 Signal Type Signal Type The 250R can detect two types of signals: • Active signals are placed on a target line with a transmitter and detected by the receiver. As an option, an active signal from a beacon (sonde) can also be detected by the receiver.

  • Page 36: Mode

    250R/T Operator’s Manual Locating Concepts - 35 Mode Mode The 250R receiver has three available mode options. Mode Description Notes Power Allows receiver to trace live IMPORTANT: Current must be power lines. flowing through the line. Radio Allows receiver to trace lines...

  • Page 37: Common Signal Problems

    250R/T Operator’s Manual Locating Concepts - 36 Common Signal Problems Common Signal Problems Distortions in the electromagnetic field around a line can affect location accuracy. Tees, bends, parallel lines, crossing lines, or large metallic objects can distort signals. IMPORTANT: If target depth and location are critical, confirm by hand-digging or vacuum excavation.

  • Page 38: Service

    250R/T Operator’s Manual Service - 37 Service Chapter Contents General Care ......38 As Needed .

  • Page 39: General Care

    250R/T Operator’s Manual Service - 38 General Care General Care Under normal operating conditions, receiver needs only minor maintenance. Following these care instructions can ensure longer equipment life: • Do not drop the equipment. • Do not expose the equipment to high heat (such as in the rear window of a vehicle).

  • Page 40: Transmitter Error Messages

    250R/T Operator’s Manual Service - 39 Transmitter Error Messages Transmitter Unit Change Batteries Use six D-cell alkaline batteries in transmitter. 1. Open battery cover. 2. Insert batteries as shown. 3. Close cover and tighten battery cover. 4. Check operation. If battery light is flashing when unit is turned on, then one battery is incorrectly installed or batteries are weak.

  • Page 41: Receiver Error Messages

    250R/T Operator’s Manual Service - 40 Receiver Error Messages Receiver Error Messages Three Dashes If three dashes appear in the display when pressing the depth button, one of the following could be possible: • The receiver is detecting a signal above it and cannot estimate depth.

  • Page 42: Specifications

    250R/T Operator’s Manual Specifications - 41 250 Receiver Specifications 250 Receiver ss1127h.eps Dimensions U.S. Metric Height 27.5” 700 mm Length 11.5” 290 mm Width 4” 100 mm Weight 5 lb 2.3 kg Operation U.S. Metric Operating temperature range -4°F to 122°F -20°C to 50°C...
  • Page 43 250R/T Operator’s Manual Specifications - 42 250 Transmitter 250 Transmitter TRANSMITTER ss1128h.eps Dimensions U.S. Metric Height 9.25” 235 mm Length 12.25” 311 mm Width 4.5” 114 mm Weight 5 lb 2.3 kg Operation U.S. Metric Operating temperature range -4°F to 122°F -20°C to 50°C...
  • Page 44 250R/T Operator’s Manual Specifications - 43 System Operation System Operation Operating Modes and Frequencies Active line: 33 kHz Passive line (locate only): 50 Hz or 60 Hz Beacon (Sonde) (locate/depth only): 33 kHz Radio (locate only) Locating Ranges Lines 15’...
  • Page 45 250R/T Operator’s Manual Specifications - 44 System Operation...

  • Page 46: Support

    Return damaged unit to dealer for inspection and warranty consideration if in warranty time frame. All repairs must be done by an authorized Ditch Witch repair facility. Repairs done elsewhere will void warranty consideration.
  • Page 47 Used Product (Cosmetics) A three-month warranty starts on the date of delivery to the end user on used and refurbished products sold from Ditch Witch Electronics dealers. Used products are non-returnable. Service and Repair A one-month warranty on labor starts on the date the unit is repaired, and a three-month warranty on parts starts on the date the unit is repaired for all products.
  • Page 48 Repair and installation of defective part will be at no charge when product or item is delivered to Ditch Witch Electronics or an authorized repair center. The product or item will be returned at no charge for return freight.
  • Page 49 250R/T Series Operator’s Manual Warranty - 48 Limited Product Warranty Policy...

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