Robertshaw 365A, Instruction Manual

Page 1: ...ION MANUAL VIBRASWITCH MALFUNCTION DETECTOR MODEL 365A MODEL E365A ROBERTSHAW INDUSTRIAL PRODUCTS 1602 Mustang Drive Maryville TN 37801 Telephone 865 981 3100 Fax 865 981 3168 909GF294 Revision F 8 January 2008 ...

Page 2: ...N NO CHANGES WITHOUT AGENCY APPROVAL ATEX DEMCO VIA UL HAZARDOUS LOCATIONS GROUP RECORD OF CHANGES Revision Design Engineer s Approval Engineering Manager s Approval Approval Date COS Number Brief Description F P Kronau Brien Evans 14JAN08 96557 Added CAUTION note and RECORD OF CHANGES table ...

Page 3: ...3 2 2 CE PRODUCT CERTIFICATION 3 2 3 ELECTRICAL 3 2 4 PERFORMANCE 4 3 INSTALLATION 5 3 1 GENERAL 5 3 2 MOUNTING 5 3 3 SPACE HEATER 6 3 4 WIRING 6 4 OPERATION 11 4 1 GENERAL 11 4 2 ADJUSTMENTS OF OPERATING SETPOINT 12 5 MAINTENANCE 15 5 1 FUNCTIONAL TEST 15 5 2 TROUBLESHOOTING 15 5 2 1 VIBRASWITCH WILL NOT RESET 15 5 2 2 UNABLE TO ADJUST SETPOINT TO OBTAIN TRIP 16 5 2 3 SWITCH DOES NOT ACTUATE 16 ...

Page 4: ...TER RESISTOR VALUES 6 5 1 RESET COIL RESISTANCE 15 LIST OF FIGURES 3 1 MODEL IDENTIFICATION MOUNTING DETAILS 7 3 2 CONNECTIONS 8 3 3 METHODS OF MOUNTING THE VIBRASWITCH MODEL 365A 9 3 4 PREPARATION OF CONDUIT WIRING 10 3 5 CONNECTION OF CONDUIT WIRING TO UNIT 10 4 1 OPERATING PRINCIPLE FOR THE VIBRASWITCH MODEL 365A 11 4 2 SETPOINT ADJUSTMENT 12 4 3 SUGGESTED SETTINGS WHEN NORMAL g LEVEL IS 1 0 g ...

Page 5: ...re on reciprocating or rotating machinery Newton s second law of motion states that the force exerted on a body by its mass is multiplied by its acceleration F M A Thus the destructive force acting on a bearing is directly dependent on the acceleration of the masses involved at the shaft which is supported by the bearings It should be noted that the measurements made by the Vibraswitch are the sum...

Page 6: ...atings Table 1 SWITCH CONTACTS Designation Description A SPDT Single pole Double throw switch D DPDT Two single pole double throw switches G DPDT Two single pole double throw sealed switches with gold plated contacts for low voltage current applications Table 2 REMOTE OPTION RESET Designation Description 0 No reset coil 1 12 VDC reset coil 2 24 VDC reset coil 3 240 VAC reset coil 4 48 VDC reset co...

Page 7: ...turer s Model Number Serial number unique serial number assigned by manufacturer which includes a code for year of construction IIB H2 marking according to Group II T6 marking essential for safe use IP66 Enclosure Rating Cert Nr DEMKO 05 ATEX 0436069 Essential information for safe use 1 The equipment temperature code is T6 2 The ambient temperature range for the equipment is 13 F 25 C to 140 F 60 ...

Page 8: ... 5 A 24 VDC 0 5 A 48 VDC 0 2 A 120 VDC 0 14 A 120 VAC 0 3 A 240 VAC 0 3 A Maximum Energized Time 4 minutes 2 4 PERFORMANCE Vibration Measurement Range 0 to 4 5g peak from 0 to 300 Hz 18 000 RPM when horizontally mounted 0 to 3 5g peak from 0 to 300 Hz 18 000 RPM when vertically mounted Setpoint Range 0 to 4 5 g Setpoint Adjustment Approximately 1g per turn Accuracy 5 of full range from 0 to 300 Hz...

Page 9: ...t are horizontal and parallel to the base of the machine the preferred location being in line with the rotating shaft ref Figure 3 3 Do not mount the Vibraswitch perpendicular to the ends of rotating shafts unless the endplay or end thrust measurement is desired Normally bent shafts unbalances on the rotating mass of the shaft worn bearings and other anomalies are detected near the bearing housing...

Page 10: ...IRING The Vibraswitch Model 365A E365A is equipped with a threaded hub for conduit When the vibration amplitude is large ie greater than 5 mils it is good practice to use a short length of flexible conduit to serve as an isolator between the rigid conduit and the Vibraswitch Wiring into the unit should be done with 18 stranded wire although 14 can be used where necessary The Vibraswitch was not de...

Page 11: ...MODEL 365A E365A INSTRUCTION MANUAL VIBRASWITCH MALFUNCTION DETECTOR 909GF294 PAGE 7 Figure 3 1 Model Identification Mounting Details ...

Page 12: ...MODEL 365A E365A INSTRUCTION MANUAL VIBRASWITCH MALFUNCTION DETECTOR 909GF294 PAGE 8 Figure 3 2 Connections ...

Page 13: ...MODEL 365A E365A INSTRUCTION MANUAL VIBRASWITCH MALFUNCTION DETECTOR 909GF294 PAGE 9 Figure 3 3 Methods of Mounting the Vibraswitch Model 365A ...

Page 14: ...ght as you may be unable to remove cover sub assembly Strip the wires and install solderless terminals as necessary Rest the cover sub assembly on the mating surface and connect the wires to the appropriate terminals Flatten wires entering housing against wall on the conduit hub side and rotate cover sub assembly into place pushing extra wire into corners near hub Replace the cover bolts and torqu...

Page 15: ... pulled into the latching magnet tripped position Simultaneously it activates the snap action switch This detecting mechanism has a uniform response from 0 to 300 Hz over a range of 0 to 4 5 g s The mechanism may be reset to the armed position manually locally or electrically remotely Manually depress the RESET button to move the armature away from the latching magnet tripped position until it is ...

Page 16: ...ugh etc These various degrees of machine vibration are therefore based on the individual s physical perception between normal and abnormal roughness while the machine is operating This method can lead to differences in the classification of the degree of vibration between individual observers Robertshaw believes that if the machine is operating satisfactorily as previously defined and the accelera...

Page 17: ...f the Setpoint adjusting screw one turn CCW and reset If it will not reset back off the Setpoint adjusting screw two turns CCW Again turn the Setpoint adjusting screw slowly clockwise until actuation occurs Mark this position with a pencil or other convenient means The difference between the two actuating points in Steps 1 and 2 is the normal g level of the operating machine in scale divisions One...

Page 18: ...MODEL 365A E365A INSTRUCTION MANUAL VIBRASWITCH MALFUNCTION DETECTOR 909GF294 PAGE 14 Figure 4 3 Suggested Settings When Normal g Level is 1 0g ...

Page 19: ...crew 1 complete turn CCW This is a 1 g setting above the earth s gravitational pull 5 Manually reset the switch press RESET button 6 With the RESET button to your right and the SETPOINT adjustment screw to your left slowly rotate the Vibraswitch toward you 90 The switch will trip when the mounting surface is in a vertical plane and the earth s gravitational pull is not aiding the lower magnet to h...

Page 20: ...gnet and armature Return the Vibraswitch to the factory for repair 5 2 3 Switch Does Not Actuate Defective Switch verify by manually moving the Armature to the latched tripped position and listen for an audible click of the switch Verify contact change of state by performing a continuity check If the switch does not pass either of the tests above return the Vibraswitch to the factory for repair ...