Emerson Fisher 377- Manuals

Page 2 - Instruction Manual; Figure 2. Typical Fisher 377 Trip Valve; Specifications; Specifications for 377 trip valves are given in table 1.; Educational Services

Instruction Manual D200319X012 377 Trip Valve July 2014 2 Figure 2. Typical Fisher 377 Trip Valve W4292-1 Figure 3. Simplified Sectional View of Trip Valve UPPERDIAPHRAGM EXHAUSTPORT RESTRICTION PORT A PORT B PORT D PORT E PLUGASSEMBLIES PORT F PORT C VALVEPLUG SPRING SUPPLYCONNECTION LOWERDIAPHRAGM...

Page 3 - SST

Instruction Manual D200319X012 377 Trip Valve July 2014 3 Table 1. Specifications Available Configurations 377 Trip Valve: Includes check valve, but no volume tank: user configured for locking position. For fielduse or replacement.When supply pressure falls below the trip point, 377D Trip Valve: Fai...

Page 4 - Declaration of SEP; However, the product; Figure 4. Maximum Trip Point Settings; Installation; WARNING

Instruction Manual D200319X012 377 Trip Valve July 2014 4 Table 1. Specifications (continued) Declaration of SEP Fisher Controls International LLC declares thisproduct to be in compliance with Article 3 paragraph3 of the Pressure Equipment Directive (PED) 97 / 23 /EC. It was designed and manufacture...

Page 6 - Figure 6. Fisher 2625 Volume Booster used with 377L Trip Valve; Supply Pressure Requirements; value of the regulator is greater than

Instruction Manual D200319X012 377 Trip Valve July 2014 6 Figure 6. Fisher 2625 Volume Booster used with 377L Trip Valve 2625 1/2 O.D. TUBING PISTONACTUATOR POSITIONER 3/4 NPTCHECK VALVE 3/4 NPT OR 1/2 NPT PIPING SUPPLY 377L i2P-100/67CFR 3/8 O.D. TUBING TYPICAL NOTES:1. 3/4 NPT CHECK VALVE AND 1/2 ...

Page 7 - Be sure all connecting tubing is free of foreign material.; CAUTION

Instruction Manual D200319X012 377 Trip Valve July 2014 7 Note During normal operation, an adequately sized supply regulator maintains a greater supply pressure than the pressure demand ofthe trip valve and control devices. However, if the normal actuator piston position is not relatively close to t...

Page 8 - port to the bottom of the actuator cylinder.; Operating Information; Calibration

Instruction Manual D200319X012 377 Trip Valve July 2014 8 CAUTION To ensure the integrity of control systems utilizing a 2625 volume booster in conjunction with a 377 trip valve, apply supplypressure to the volume booster and to the volume tank (volume tank not required on 377L trip valve) through a...

Page 9 - Reset the control device for normal operation.; Principle of Operation; Figure 7 illustrates trip valve operation in the fail‐down mode.

Instruction Manual D200319X012 377 Trip Valve July 2014 9 1. Remove the adjusting screw cap (key 1). 2. Loosen the hex nut (key 3), and turn the set screw (key 2) counterclockwise until all loading is removed from the spring (key 6). 3. Connect an adequately sized gauge for the supply pressure readi...

Page 10 - Figure 7. Fisher 377D Trip Valve Shown in Tripped Condition

Instruction Manual D200319X012 377 Trip Valve July 2014 10 GE08412‐AA6905‐1 Figure 7. Fisher 377D Trip Valve Shown in Tripped Condition SPRING VALVE PLUG UPPERDIAPHRAGM EXHAUSTPORT SUPPLYPRESSURE LOWERDIAPHRAGM PORT D PORT E LOWERPORTS PORT F PORT C PLUGASSEMBLIES UPPER PORTS PORT B PORT A VENT MAIN...

Page 11 - Figure 8. Fisher 377L Trip Valve Shown in Tripped Condition

Instruction Manual D200319X012 377 Trip Valve July 2014 11 Figure 8. Fisher 377L Trip Valve Shown in Tripped Condition SPRING VALVE PLUG UPPER DIAPHRAGM EXHAUSTPORT SUPPLYPRESSURE LOWERDIAPHRAGM PORT D PORT E LOWER PORTS PORT F PORT C PLUGASSEMBLIES UPPER PORTS PORT B PORT A VENT MAIN SPRING ACTUATO...

Page 12 - Figure 9. Fisher 377U Trip Valve Shown in Tripped Condition; Maintenance

Instruction Manual D200319X012 377 Trip Valve July 2014 12 Figure 9. Fisher 377U Trip Valve Shown in Tripped Condition SPRING VALVE PLUG UPPER DIAPHRAGM EXHAUSTPORT SUPPLYPRESSURE LOWERDIAPHRAGM PORT DPORT E LOWER PORTS PORT FPORT C PLUG ASSEMBLIES UPPERPORTS PORT B PORT A VENT MAIN SPRING ACTUATOR ...

Page 13 - Periodic Operational Check; Isolate the actuator/valve assembly from the process loop.; Trip Valve Part Replacement Procedures

Instruction Manual D200319X012 377 Trip Valve July 2014 13 D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the actuator cannot suddenly open or close the valve. D Use bypass valves or completely shut off the process to isolate t...

Page 14 - set screw to remove all spring compression.; Replacing Stem/Plug Assembly Parts; Refer to the installation and calibration procedures.

Instruction Manual D200319X012 377 Trip Valve July 2014 14 1. Remove the adjusting screw cap (key 1), and loosen the hex nut (key 3) that locks the set screw (key 2). Loosen the set screw to remove all spring compression. 2. Remove the cap screws (key 7, not shown) from the spring case, and lift off...

Page 15 - Parts Ordering; Parts Kits; Parts List; Table 2. Common Parts

Instruction Manual D200319X012 377 Trip Valve July 2014 15 Parts Ordering When corresponding with your Emerson Process Management sales office about this equipment, always refer to thetrip valve serial number which is located on the nameplate. Refer to table 2 for common parts. Contact your EmersonP...

Page 18 - Fittings

Instruction Manual D200319X012 377 Trip Valve July 2014 18 Table 2. Common Parts (continued) KEY NUMBER DESCRIPTION QUANTITY REQUIRED PART MATERIAL Trip Valve Construction Aluminum Stainless Steel 65 Screen (not shown) For boss mounted 377D, 377U, 377CW or 377CCW Stainless steel Stainless steel 71...

Page 19 - Figure 10. Trip Valve Assembly

Instruction Manual D200319X012 377 Trip Valve July 2014 19 Figure 10. Trip Valve Assembly APPLY LUB 49A3195-C NOTE: KEY NUMBERS 7, 20, 64, 65, 76, 78, 79, 80, 88 NOT SHOWN ALUMINUM CONSTRUCTION STAINLESS STEEL CONSTRUCTION APPLY LUB GE51600-A NOTE: KEY NUMBERS 7, 20, 30, 33, 36, 37, 64, 65, 76, 78, ...