WATLOWEZ-ZONE® PMUser’s GuidePID Controller Models

Safety Information

We use note, caution and warning symbols throughout this book to draw your attention to 

important operational and safety information.

• A “NOTE” marks a short message to alert you to an important detail.

• A “CAUTION” safety alert appears with information that is important for protecting your 

equipment and performance. Be especially careful to read and follow all cautions that 

apply to your application.

• A “WARNING” safety alert appears with information that is important for protecting you, 

others and equipment from damage. Pay very close attention to all warnings that apply 

to your application.

• The electrical hazard symbol, Ó (a lightning bolt in a triangle) precedes an electric 

shock hazard CAUTION or WARNING safety statement.

Symbol Explanation

CAUTION – Warning or Hazard that needs further explanation than label on 

unit can provide. Consult User's Guide for further information.

ESD Sensitive product, use proper grounding and handling techniques 

when installing or servicing product.

Unit protected by double/reinforced insulation for shock hazard prevention.

Do not throw in trash, use proper recycling techniques or consult manufacturer for proper disposal.

Enclosure made of Polycarbonate material. Use proper recycling techniques or consult manufacturer for proper disposal.

Unit can be powered with either alternating current (ac) voltage or direct 

current (dc) voltage.

Unit is a Listed device per Underwriters Laboratories®. It has been evaluated to United States and Canadian requirements for Process Control 

Equipment. UL 61010 and CSA C22.2 No. 61010. File E185611 QUYX, 

QUYX7. See: www.ul.com

Unit is a Listed device per Underwriters Laboratories®. It has been evaluated to United States and Canadian requirements for Hazardous Locations 

Class 1 Division II Groups A, B, C and D. ANSI/ISA 12.12.01-2007. File 

E184390 QUZW, QUZW7. See: www.ul.com

Unit is compliant with European Union directives. See Declaration of 

Conformity for further details on Directives and Standards used for 

Compliance.

Warranty

The EZ-ZONE® PM is manufactured by ISO 9001-registered processes and is backed by a 

three-year warranty to the first purchaser for use, providing that the units have not been 

misapplied. Since Watlow has no control over their use, and sometimes misuse, we cannot guarantee against failure. Watlow’s obligations hereunder, at Watlow’s option, are limited to replacement, repair or refund of purchase price, and parts which upon examination 

prove to be defective within the warranty period specified. This warranty does not apply to 

damage resulting from transportation, alteration, misuse or abuse. The purchaser must use 

Watlow parts to maintain all listed ratings.

Technical Assistance

If you encounter a problem with your Watlow controller, review your configuration information to verify that your selections are consistent with your application: inputs, outputs, 

alarms, limits, etc. If the problem persists, you can get technical assistance from your local 

Watlow representative (see back cover), by e-mailing your questions to wintechsupport@watlow.com or by dialing +1 (507) 494-5656 between 7 a.m. and 5 p.m., Central Standard Time 

(CST). Ask for for an Applications Engineer. Please have the following information available 

when calling:

• Complete model number 

• All configuration information

• User's Guide 

• Factory Page

Return Material Authorization (RMA)

1. Call Watlow Customer Service, (507) 454-5300, for a Return Material Authorization (RMA) 

number before returning any item for repair. If you do not know why the product failed, 

contact an Application Engineer or Product Manager. All RMA’s require:

• Ship-to address

• Bill-to address

• Contact name 

• Phone number

• Method of return shipment

• Your P.O. number

• Detailed description of the problem 

• Any special instructions

• Name and phone number of person returning the product.

2. Prior approval and an Return Merchandise Authorization number from the Customer 

Service Department is required when returning any product for credit, repair or evaluation. Make sure the Return Merchandise Authorization number is on the outside of the 

carton and on all paperwork returned. Ship on a Freight Prepaid basis.

3. After we receive your return, we will examine it and try to verify the reason for returning it.

4. In cases of manufacturing defect, we will enter a repair order, replacement order or 

issue credit for material returned. In cases of customer misuse, we will provide repair 

costs and request a purchase order to proceed with the repair work.

5. To return products that are not defective, goods must be in new condition, in the original boxes and they must be returned within 120 days of receipt. A 20 percent restocking 

charge is applied for all returned stock controls and accessories.

6. If the unit cannot be repaired, you will receive a letter of explanation and be given the 

option to have the unit returned to you at your expense or to have us scrap the unit.