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Quick Installation 

2.1 

Inspect all threaded connections and ensure 
they are all damage free. 

2.2 

Prepare Process Connection (Trim Bushing)
Threads by applying PTFE (Teflon) tape or 
sealant. 

2.3 

Use knurled pipe wrench area on Process 
Connection to thread into place. 

2.4 

Inspect threads in the Electrical Conduit  Port 
(1/2” FNPT) as well as the electrical cable 
assembly fitting to ensure cleanliness and
free of damage.   

2.5 

Feed wire leads through the Electrical  
Conduit Port and tighten the electrical 
cable assembly fitting.  Refer to the wiring 
diagram on next page to attach wires to  
micro switch. 

Electrical 

Conduit 

Port 1/2” 

FNPT 

Knurled 

Pipe/Strap 

Wrench 

Area 

Process 

Connection 

(Trim Bushing) 

Adjustment 

Collar 

Safety 

1.1 

Power supply must be disconnected before installation, calibration and maintenance. 

1.2 

Keep all components dry and free from damage. 

1.3 

Review applicable standards to ensure Robinson Pressure Switch is the correct switch for 
the application. 

1.4 

Personnel must wear appropriate safety approved apparel for working environment. 

1.5 

Only qualified personnel should install the Robinson Pressure Switch and accessories. 

1.6 

A qualified electrician is required to inspect wiring installation prior to applying electricity. 

1.7 

Ensure Enclosure cover is in place prior to applying electricity. 

2” MNPT 

Connection 

ZIMCO INSTRUMENTATION INC.

11141 15 Street NE, Calgary, AB, T3K 0Z5, Canada 

Phone: 

403-253-8320 

Email: 

info@zimco.ca 

Website: 

www.zimco.ca

 

Summary of Contents for RS74A-750F

Page 1: ...A 750F RS74M 750F High Temp Pressure Switch Installation Operation Manual Hazardous Location Pressure Switch 11141 15 Street NE Calgary AB T3K 0Z5 Canada Phone 403 253 8320 Email info zimco ca Website www zimco ca ...

Page 2: ... Knurled Pipe Strap Wrench Area Process Connection Trim Bushing Adjustment Collar 1 Safety 1 1 Power supply must be disconnected before installation calibration and maintenance 1 2 Keep all components dry and free from damage 1 3 Review applicable standards to ensure Robinson Pressure Switch is the correct switch for the application 1 4 Personnel must wear appropriate safety approved apparel for w...

Page 3: ...hex key to loosen the Enclosure Cover Security feature 3 2 Use a spanner wrench 1 4 pin 2 4 3 4 span to break loose the Enclosure Cover and Complete removal by hand 3 3 Connect wires to micro switch as required 3 4 Thread 1 2 MNPT electrical cord Union into the Electrical Port located on the side of the electrical enclosure housing 5 Turns 3 5 Thread Enclosure Cover back onto the Electrical Enclos...

Page 4: ...ning of Pressure Adjusting Collar 4 2 Pressure Setting Turn Collar Clockwise to Increase Pressure Setting Turn Collar Counter Clockwise to Decrease Pressure Setting 4 3 Tighten Cap Screw Tighten Cap Screw to lock Pressure Adjusting Collar in position 5 Notes Regarding Calibration 5 1 Calibration is not required after re setting verifying trip pressure 5 2 Calibration micro switch gap setting is re...

Page 5: ...0F Manual Reset Figure 6 IMPORTANT INFORMATION about Process Temperature Testing Pressure Switches with the minimum Class 1 Div 1 name plate markings do not meet CSA C22 2 No E60079 0 2007 which requires a maximum process temperature to be applied for explosion proof test ing All Robinson Pressure Switches in addition to meeting the minimum Class 1 Div 1 have also been tem perature tested to CSA C...

Page 6: ...service Process Connection Materials are chosen in accordance to NACE MR0175 2003 Piston Orientation Eliminate the need for pulsation dampening Field Service Microswitch replaceable no need to disassemble Pressure Switch Diaphragm Servicing Diaphragm can be replaced without disassembling Pressure Switch Pin socket available for Diaphragm Nut contact Robinson Pressure Controls Low Ownership Costs M...

Page 7: ... train its employees and contractors in the safe use of Robinson products in con nec on with the specific applica on While the informa on and specifica ons contained in this literature are believed to be accurate they are sup plied for informa ve purposes only and should not be considered cer fied or as a guarantee of sa sfactory re sults by reliance thereon Nothing contained herein is to be construe...

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