Ytc YT-870 Series User manual

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
1
LIMIT SWITCH BOX
YT-870 SERIES
USER'S MANUAL
YTC V.1.00

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
2
The manual should be provided to the end-user.
Introduction
Thank you for choosing YTC product. Each product is fully inspected after the production to offer you
the highest quality. In order to fully utilize the product, we strongly recommend users to read the
manual carefully and fully understood.
The manual can be altered or revised without any prior notice. Any changes in product's
specification, structure, and/or any components may not result immediate revised version
of the manual.
The manual should not be duplicated or reproduced for any purpose without any approval
from Young Tech Co., Ltd, South Korea.
For the safety, it is imperative to follow instructions in the manual. It is not manufacturer's
liability for any damages which caused by users' negligence.
Manufacturer Warranty
It is not manufacturer's liability for any damages or accidents which resulted by any alteration
or modification of the product and parts. If alteration or modification is necessary, please
contact the manufacturer directly.
Manufacturer warrants the product from the date of original retail purchase of the product for
one (1) year, except as otherwise stated.
Manufacturer warranty will not cover the products that the product have been subjected to
abuse, accident, alteration, modification, tampering, negligence, misuse, faulty installation,
lack of reasonable care, repair or service in any way that is not contemplated in the
documentation for the product, or if the model or serial number has been altered, tampered
with, defaced or removed; damages that occurs in shipment, due to act of God, failure due to
power surge, and cosmetic damage. Improper or incorrectly performed maintenance or
report voids this Limited Warranty.
For detailed warranty information, please contact the corresponding local Young Tech Co.,
Ltd office or main office in South Korea.
YT-870 is designed for explosion proof area. The user must follow other explosion proof
procedures and safety precautions.
Safety Precautions
For unused power connectors, please make sure to use blind plugs which is explosion proof
certified.
If cover must be opened for any case, the power must be turned off and wait for at least 30
seconds.
When connecting power, please make sure to use flameproof proven sealing fitting and/or
cable glands. <Power cable must be at least 1㎟or 18AWG.

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
3
Product Description
YT-870 series monitors and transmits the valve position at the specific point.
Label Description
Model Number: Indicates model number
Explosion Proof: Indicates explosion proof grade
Enclosure: Indicates protection grade
Switch Type: Indicates switch type and number of the switch
Rating: Indicates allowable voltage
Serial Number: Indicates unique serial number
Suffix Symbols

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
4
Specification
* Tested under ambient temperature of 20℃, absolute pressure of 760mmHg, and humidity of 65%. Please contact YTC for
the more detailed specification.
Parts and assembly

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
5
Dimensions
Installation
All input and supply pressure to valve, actuator, and other related devices must be
turned off when installing.
Safety Warning
YT-870 is designed for explosion proof area. The user must follow other explosion
proof procedures and safety precautions.
Make sure there is no explosive gas or material present before the installation.
①Assemble limit switch body with the bracket provided in the box.
YT-870 Installation
②Align the main shaft of the limit switch box and the stem of the actuator. After the alignment, tighten
the bracket onto the actuator.

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
6
Connection – Power
Make sure there is no explosive gas or material present before the installation.
Safety Warning
If cover must be opened for any case, the power must be turned off and wait for at least
30 seconds.
For unused power connectors, please make sure to use blind plugs which is explosion
proof certified.
When connecting power, please make sure to use flameproof proven sealing fitting
and/or cable glands. <Power cable must be at least 1mm2or 18 AWG>
Make sure the polarities are correct.
Don’t use too much force when pull the cable, and make sure the cable does not peel off.
Mechanical Type <2 SPDT>
Proximity Type <NPN Sensor>
Mechanical Type <2 DPDT>

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
7
①Push down upper switch and turn right or left to preferred position.
Adjustment – Upper Switch
①Pull up lower switch and turn right or left to preferred position.
Adjustment – Lower Switch
Bracket

Young Tech co, LTD. www.ytc.co.kr
#662-8 PungMu Dong, Kimpo City, KyeongGi Do, 415-809, KOREA TEL: [phone] – 8545 FAX: [phone]
8
Young Tech Co., Ltd.
Address: 662-8, Pungmu-Dong, Kimpo-City, Kyeonggi-Do, South Korea
Phone: [phone]
Fax: [phone]
Web: www.ytc.co.kr
This manual can be changed or revised without any prior notice. For latest version, please contact YTC website.
Issued: 2009.MAR.25 Version 1.00