Hach Lange CL17 - User Manual

Questions and Answers

J
Julie BeckerAug 1, 2025
What to do if Hach Measuring Instruments shows zero reading?
- A
  andrew56Aug 1, 2025
  If your Hach Measuring Instruments displays a zero reading, consider these possible causes: * No stir bar: Place a stir bar into the colorimeter. * Pinch plate thumb screws not fully tightened: Tighten the thumb screws. * Sample not flowing: Check the sample conditioning and other sample supply lines. * More than one stir bar: Remove the plug from the top of the colorimeter and use a flashlight to illuminate the inside of the cell. Look into the colorimeter to determine if more than one stir bar is inside. Remove excess stir bars.
B
Benjamin LaneAug 7, 2025
Why Hach Measuring Instruments display does not light and the pump motor isn't working?
- P
  pricejermaineAug 7, 2025
  If the display doesn't light up and the pump motor isn't operating, it could be due to no operating power. Check the power switch position, fuses, and power cord connections.
D
Danielle GardnerAug 11, 2025
What to do if Hach Lange CL17 Measuring Instruments display lights but the pump motor doesn't operate?
- J
  Jessica ThomasAug 11, 2025
  If the display lights up but the pump motor doesn't operate, consider the following: 1. Low operating power: Verify the line voltage is within specifications. 2. Incorrect line voltage selector switch setting: Check the line voltage selector switch position. 3. Motor cable not connected: Check the motor cable connection to the circuit board. 4. Defective motor: Replace the motor.
J
John LaneAug 16, 2025
How to fix sample overflowing from the colorimeter in Hach Lange CL17?
- A
  April JacobsAug 17, 2025
  If the sample is overflowing from the colorimeter, the drain line might be clogged, or there could be an air lock in the drain line. Clean the drain line and/or eliminate any air locks from the drain plumbing.
D
Denise NelsonAug 21, 2025
Why Hach Measuring Instruments display does not light but the pump motor operates?
- D
  Danielle MckinneyAug 21, 2025
  If the display doesn't light up but the pump motor operates, there may be a problem with the power supply. In this case, replace the main circuit board.
D
Darlene ThomasAug 27, 2025
Why is excessive moisture condensing on the Hach Measuring Instruments colorimeter?
- C
  Charles ParsonsAug 27, 2025
  Excessive moisture condensing on the colorimeter is likely due to a large temperature difference between the sample and the analyzer environment. When practical, allow the sample temperature to warm to room temperature before it enters the analyzer.

Summary

Section 1 Specifications

Sample Requirements

Electrical Specifications

Covers power requirements, connection methods, installation category, and protection class.

Optical and Performance Specifications

Instrument Performance Metrics

Section 2 General Information

Safety Information Overview

Crucial safety instructions, including hazard definitions and the importance of following manual guidelines.

Precautionary Label Identification

Explains the meaning of various safety labels attached to the instrument and their significance.

Section 3 Installation

Environmental Considerations for Mounting

Wall Mounting the Instrument

Procedures and considerations for securely mounting the analyzer case onto a wall.

Plumbing Connections Guide

Instructions for making sample inlet and drain connections using appropriate fittings and tubing.

Sample Line and Conditioning

Installing the Sample Line

Guidance on selecting an optimal sampling point and installing the sample line to ensure representative measurements.

Sample Conditioning System

Information on using the sample conditioning kit to filter and prepare samples for analysis.

Electrical Connections and Setup

Electrical Connection Points

Identifies the locations for power, alarm, and network connections on the instrument enclosure.

Power Connection Procedures

Instructions for safely making the main power connections to the analyzer.

Instrument Wiring Guidelines

Details on connecting wires for power, alarms, and recorder outputs, including wire gauge.

Voltage Selection and Alarm;Recorder Connections

Voltage Selection for Operation

How to set the internal switch for 115V or 230V operation and fuse information.

Alarm Relay Connections

Instructions for wiring the two alarm relays to external devices or control systems.

Recorder Output Wiring

Pump;Valve Pinch Plate Installation

Section 4 System Startup

Reagent Installation and Preparation

Instructions for installing buffer and indicator solutions and preparing the indicator reagent.

Stir Bar Installation

Sample Flow Setup

Powering On the Analyzer

Section 5 Operation

Keypad and Display Interface

Instrument Menu Navigation

Alarm Configuration and Management

Recorder Output Configuration

Maintenance Menu Functions

Calibration Procedures

Step-by-step guides for calibrating the analyzer using standards or comparison methods.

Section 6 Maintenance

Scheduled Maintenance Procedures

Unscheduled Maintenance Procedures

Fuse Replacement Procedure

Instrument and Colorimeter Cleaning

Section 7 Troubleshooting

Troubleshooting Guide by Symptom

A table listing common symptoms, probable causes, and corrective actions for instrument issues.

System Alarm Indicators

Explains system alarm messages, their indications, and the necessary steps for resolution.

System Warning Messages

Appendix A Network Interface Card

Connecting to AquaTrend Network

Adding Analyzer to AquaTrend Channels

Serial Output Data Logging

MOD I;O Module Data Logging

Hach Lange CL17 Specifications

General

Measurement Principle	Colorimetric
Resolution	0.01 mg/L
Wavelength	515 nm
Power Supply	100 - 240 VAC, 50/60 Hz
Weight	5.5 kg
Parameter	Chlorine
Detection Limit	0.02 mg/L
Reagent Type	DPD
Sample Temperature	5 - 40 °C
Operating Temperature	5 - 40 °C
Output	4-20 mA