2 CULLIGAN
®
MARK 100 WATER SOFTENER
Introduction
SAFE PRACTICES
Throughout this manual there are paragraphs set off by special headings.
NOTICE: Notice is used to emphasize installation, operation or maintenance information which is important, but
does not present any hazard.
Example: NOTICE: The nipple must extend no more than 1 inch above the cover plate.
CAUTION: Caution is used when failure to follow directions could result in damage to equipment or
property. Example:
CAUTION: Disassembly while under water pressure can result in flooding.
WARNING: Warning is used to indicate a hazard which could cause injury or death if ignored. Example:
WARNING! ELECTRICAL SHOCK HAZARD! UNPLUG THE UNIT BEFORE
REMOVING THE COVER OR ACCESSING ANY INTERNAL CONTROL PARTS.
SERIAL NUMBERS
The control valve serial number is located on the back of the timer case.
The media tank serial number is located on the top surface of the tank.
NOTICE: Do not remove or destroy the serial number. It must be referenced on request for warranty repair or
replacement.
This publication is based on information available when approved for printing. Continuing design refinement
could cause changes that may not be included in this publication.
* Verified using hardness surrogate per ANSI/NSF Standard 44.
The Culligan
®
Mark 100 water softeners are tested and validated by WQA against ANSI/NSF
Standard 44 for the effective reduction of calcium and magnesium, along with Barium and
Radium 226/228*.