Introduction

The technical Information is divided into four basic parts:

• General application
• Relay handling
• Warranty terms
• Limitation on liability

GENERAL APPLICATION

• Avoid Abuse
  As with any electro-mechanical device, relays are sensitive to abuse. To assure optimum performance, avoid dropping, hitting, or other unnecessary shocks to the relay.
• Never Remove the Case
  The case of a relay is an integral part of that relay. DUNMAG relays are not designed to have the case detached. Never remove the case, as specifications or performance cannot be guaranteed.
• Atmosphere Considerations
  DUNMAG recommends that you use unsealed relays in an atmosphere with only a minimum of dust and other contaminants. If a relay must withstand a harsh atmosphere, we suggest that you use a relay with dust cover.
• Warning: Silicon Based Resins
  Some silicon-based resins can cause contact failure in a relay. The silicon-based resin does not need to come in direct contact to cause damage—it just needs to be in close proximity. In cases where silicon-based resins are used, we suggest that you use a relay with dust cover.
• Voltage
  To assure meeting to electrical and performance characteristics, only the correct rated voltage should be applied to the coil.
• Over Voltage
  Although typically a spike will not affect a relay's performance, the voltage on the coil should not continuously exceed the maximum allowable voltage.
• Contact Current
  Currents that exceed the designated values should be avoided.
• Check Your Load and Conditions
  The performance of contacts varies depending on both the type of load and operating conditions encountered. Please consider your specific load and operating conditions in selecting the optimum relay for your application.
• Ultrasonic Cleaning
  Never use any type of ultrasonic cleaning. Ultrasonic cleaning is always traumatic and is not recommended.
• Pickup & Dropout Voltages
  Comprehensive testing using precise relay test sets and calibrated test equipment.
• Storage
  Avoid storing relays in excessively humid conditions where possible, as moisture can affect performance in some cases.

Relay Handling

We take extensive quality control measures, and extreme care in packaging to assure that the relays you receive are in the best possible operating condition. Once they enter your facility, following care can prevent damage during handling:

Handling

• Avoid handling relay terminals. Oils and contaminates common to the human hand can cause contamination of the surface finish--which in turn can lead to solder ability problems.
• Always store relays at room temperatures and in a clean environment.
• Avoid misalignment of the terminal layout.
• A slight misalignment, forcing a relay into the board can cause relay damage, compromising its performance and reliability.

Never bend terminals

• Once relay terminals are bent, performance can no longer be guaranteed.
• Never bend terminals to make them self-clinching, and avoid bending or tempering them.

Connection and mounting

• To avoid short circuit, make sure NO (Normally Open), NC (Normally Close) and Common terminal connections do not touch each other in any way.
• To connect a lead wire to the terminal, securely wind the lead wire around the terminal as shown.

Soldering Guidelines

• Keep the tip of the soldering iron clean.
• Solder Iron---30W to 60W.
• Solder Time---within approx. 3 seconds
• Immediate air cooling is recommended to prevent deterioration of the relay and surrounding parts due to soldering heat

Warranty - 24 Months

Dunmag Controls Pvt. Ltd. exclusive warranty is that the relay will be free from defects in materials and workmanship for a period of 24 months from the date of sale. Dunmag Controls disclaims all other warranties, express or implied. Dunmag Controls makes no warranty or representation, expressed or implied, about non-infringement, merchantability or fitness for a particular purpose of the products. By placing a purchase order with Dunmag Controls or its distributors, the customer acknowledges that they alone have determined that the products will suitably meet the requirements of their intended use..

Dunmag Controls Pvt. Ltd. further disclaims all warranties and responsibility of any type of claims or expenses based on infringement by the relay or otherwise of any intellectual property right.
Dunmag Controls Pvt. Ltd. sole obligation hereunder shall be:

• To replace the non-complying relay (in the form of originally shipped product with the customer responsible for labour charges for removal and or replacement there of)
• To repair the non-complying relay, or
• To repay or credit the customer an amount equal to the purchase price of the non-complying relay;

Provided that in no event shall Dunmag Controls Pvt. Ltd. be responsible for warranty, repair, indemnity or any other claims or expenses regarding the relay, unless our analysis confirms that the product were properly handled, stored, installed, and maintained and not subject to contamination, abuse, misuse, or inappropriate modification.
Dunmag Controls Pvt. Ltd. must approve return of any products by the customer in writing before shipment.
Dunmag Controls Pvt. Ltd. shall not be liable for the suitability or unsuitability or the results from the use of products in combination with any electrical or electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in writing are not to be construed as an amendment or addition to the above warranty.


LIMITATION ON LIABILITY

Dunmag Controls Pvt. Ltd. shall not be liable nor responsible for special, indirect, incidental or consequential damages, loss of profits or production in any way connected with the relays or information supplied on this website, whether such claim is based in contract, warranty, negligence or strict liability. Further, in no event shall liability of Dunmag Controls Pvt. Ltd. exceed the individual price of the relay on which liability is asserted.


Disclaimer

The information provided by Dunmag Controls Pvt. Ltd. on its websites is for general purposes only. All the information on the Website is provided in good faith, However, we make no responsibility or warranty of any kind of accuracy, adequacy, value ability, availability for completeness of products if technical information / guidance taken only from the website. We suggest our customers to read product manual or take a technical expert's advice before using products.