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Operation of Air Equalization Valve

SCIENTIFIC TECHNOLOGIES  INC.

Call: 1/888/510-4357 in USA and Canada

Universal Safety Mat UM Series Rev. C

© STI 08/2000

 15

6 . 2 . O

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6.2.1 

P

URPOSE

To allow Safety Mat to equalize with outside atmosphere pressure to insure proper mate operation.

6.2.2

U

SE

After mats have been properly installed, clear any debris from area around air equalization valve. 
Open the air equalization valve with a standard screw driver by turning the air equalization valve 
screw 1 1/2 turns counter clockwise. 

Do not remove screw.

Allow the air equalization valve to remain open for a minimum of 30 seconds. 

Do not stand on or 

allow objects

 to be on the safety mat during this process.

After the mat has been equalized, close the air equalization valve by turning the air equalization 
valve screw clockwise until securely closed. 

Do not over tighten

.

Figure 6-6  Air Valve Instruction

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Please refer to manual for detailed instruction 
on how to use the air valve.

- Consulter le manuel pour tous renseigne-

ments concernant le fonctionnement de 
la soupape pneumatique.

- Sírvase consultar el manual donde se  

detallan las instrucciones sobre cómo  
hacer funcionar la válvula de aire.

- Fare riferimento al manuale per 

istruzioni dettagliate in merito al 
funzionamento della valvola dell’aria.

- Ausführliche Hinweise zur Bedienung 

des Luftventils sind der entsprechenden 
Gebrauchsanweisung zu entnehmen.

IMPORTANT NOTICE

Read instruction manual for proper installation 

methods and operation of air valve.

Instruction:

 After mat is installed open air valve 

by rotating valve "counter clockwise" 1 1/2 revolutions, 

let mat sit with valve open 30 seconds. 

Close valve by rotating clockwise.

Do not over-torque valve.

Summary of Contents for UM Series

Page 1: ... Series Table of Contents Section 1 Important Safety Message page 2 Section 2 Introduction page 3 Section 3 Mat Construction page 4 Section 4 Selecting The Safety Mat Size page 6 Section 5 Safety Mounting Distance page 7 Section 6 Installation page 9 Section 7 Warranty page 16 Appendix A Comparison Between Good and Poor Installation Design page 17 ...

Page 2: ...g or safety devices are not operating properly Never use the machine if it or the safety equipment is not is proper working order The following additional requirements must be met before using a safety mat and controller system The machine on which the presence sensing mat and controller are installed must be capable of stopping motion anywhere in its cycle or stroke Never use a presence sensing m...

Page 3: ... safety mat 2 1 WHAT A SAFETY MAT DOES STI Universal safety mats provide personnel safeguards around hazardous machinery The Universal safety mat monitors ingress to the covered hazardous area and allows unimpeded access for machinery handling equipment and operators 2 2 THEORY OF OPERATION Multiple safety mats may be wired in series to form a complete floor level guarding system Each 4 wire Unive...

Page 4: ...t be instructed that the perimeter trim is not an active sensing surface Stepping only on the perimeter trim will not send a stop signal to the guarded machine Perimeter trim is used to provide mechanical protection for the mat cables and to fix the mat s in place as required by ANSI B11 19 1990 The perimeter trim of an individual or multiple mat installation may be either aluminum or safety yello...

Page 5: ...y transferring the weight of an object or personnel beyond the 1 4 in 6 25mm inactive area along the edge of each mat to the active area of either one or both mats comprising the joint Active joining trim consists of two parts an aluminum base that provides a wiring channel for two mat cables and a black PVC cover providing protection for the cables and covering for the open area between the mats ...

Page 6: ...If you need to identify an existing Universal safety mat you may look in the STI catalog for instructions on how to determine the model number or call STI for assistance Knowing the distance that must be covered with safety mats from the hazardous area of the machine is critical to a safe installation 4 2 ACTIVE MAT SURFACE The Universal safety mat is designed to be secured to the mounting surface...

Page 7: ...imum safe distances for ground level trip devices The minimum safe distance shall be calculated using the following formula S K x T C or 1 S 63 in sec x T 47 2 in 0 4H or S 1600mm sec x T 1200mm 0 4H where S is the minimum distance in inches in the horizontal plane from the hazardous area to the detecting edge of the device furthest from the hazardous area K 63 in sec 1600mm sec which is the avera...

Page 8: ...s 0 300 seconds The response time of the controller is 0 025 seconds The safety mat is to be mounted at the reference plane floor S 63 in sec x T 47 2 in 0 4H or S 63 in sec x t1 t2 47 2 in 0 4H where T t1 t2 Therefore S 63 in sec x 0 300 sec 0 025 sec 47 2 in 0 4 x 0 0 in S 63 in sec x 0 325 sec 47 2 in 0 0 in S 20 48 in 47 2 in S 67 68 in 5 2 APPROACH SPEEDS AND STRIDE LENGTHS The positioning of...

Page 9: ...Figure 5 1 Examples of Safe Distance S 6 INSTALLATION 6 WARINING Stacking safety mats after removal from packaging may affect the functionality of the mats Note The Universal safety mat is a durable activating device providing it is properly handled and installed For dependable and long life of the safety mat follow these instructions carefully Safety Mat S Edge of Hazardous area S C Reference pla...

Page 10: ...After the mat is in place use care in routing the mat cables to prevent damaging the insulation or breaking the internal wires Make sure that the cable passageways are free of burrs and sharp edges Where the mat cable is to enter the under the trim the trim or mounting surface must be grooved or notched so as not to pinch the cable when the trim is tightened down Unless extra precautions are taken...

Page 11: ...he warranty After marking drill points remove perimeter trim and drill holes into mounting surface use a 3 16 inch or 5mm bit Insert the supplied plastic anchors into the mounting holes position the perimeter trim pieces in alignment with the predrilled mounting holes and secure to the mounting surface using the supplied Phillips head screws Refer to Appendix A European Norm EN 1760 1 1997 Annex B...

Page 12: ...y Mat Installation 6 SCIENTIFIC TECHNOLOGIES INC Call 1 888 510 4357 in USA and Canada Universal Safety Mat UM Series Rev C STI 08 2000 12 R Figure 6 3 Mat Installation Illustrating Drilling and Countersinking Anchor bolts ...

Page 13: ... A L L A T I O N Safety Mat Installation SCIENTIFIC TECHNOLOGIES INC Call 1 888 510 4357 in USA and Canada Universal Safety Mat UM Series Rev C STI 08 2000 13 Figure 6 4 Universal Safety Mat with Mitered Corners ...

Page 14: ...ON Safety Mat Installation 6 SCIENTIFIC TECHNOLOGIES INC Call 1 888 510 4357 in USA and Canada Universal Safety Mat UM Series Rev C STI 08 2000 14 R Figure 6 5 Mat Installation Illustrating For Metered Corners Mats ...

Page 15: ...equalization valve by turning the air equalization valve screw clockwise until securely closed Do not over tighten Figure 6 6 Air Valve Instruction R TIGHTEN LOOSEN Label P N 28607 0010 Rev A Please refer to manual for detailed instruction on how to use the air valve Consulter le manuel pour tous renseigne ments concernant le fonctionnement de la soupape pneumatique Sírvase consultar el manual don...

Page 16: ...cause relating thereto and STI s liability hereunder in any case is expressly limited to the repair or replacement at STI s option of goods Warranty is specifically at the factory Any on site service will be provided at the sole expense of the purchaser at standard field service rates All associated equipment must be protected by properly rated electronic electrical protection devices STI shall no...

Page 17: ...no access to the danger zone between the fixed guard and the sensors The fixed guard permits access to the danger zone through the sensors only 3 A sloping cover plate prevents the operator standing at the side of the effective sensing field and in the danger zone 4 Sensors are properly installed 5 The dead zones of the sensors are located in such a way that the protective function will not be imp...

Page 18: ...ted in such a way that the operator may be able to reach the danger zone 6 Tripping hazards presented by exposed edges of sensors and trailing cables trailing cables are not protected against mechanical damage 7 Cable trunking is installed on the inside of the fixed guard and may be misused to provide access to the danger zone 8 Sensors shall not be installed on traffic routes 9 The service pipe i...

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