SERIES 70 2ND GENERATION ELECTRIC ACTUATOR OPERATION AND MAINTENANCE MANUAL
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Table Of Contents: page Safety instructions: definition of terms...........................................................................2 introduction....................................................................................................................3 principle of operation.....................................................................................................3 electrical operation............................
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Safety Instructions - Definition of Terms READ AND FOLLOW THESE INSTRUCTIONS SAVE THESE INSTRUCTIONS ! WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. ! CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Part Numbering System Reference chart (In.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Manual Override Operation (Declutchable) The manual override operates similar to a watch adjusting knob. To engage the manual override, simply pull the handwheel to its outermost position. A yellow stripe is revealed for visual indication that the unit cannot run electrically. The two handwheel positions, engaged and disengaged, are held in place with the use of spring plungers. The handwheel remains in position until physically moved.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual NOTICE ! The conduit connections must be properly sealed to maintain the weatherproof integrity of the actuator enclosure. Multiple Actuator (Parallel) Wiring CAUTION ! Do not connect more than one S70 actuator which do not have I.R.B. installed to a single SPDT switch. A voltage is present on the opposite winding to the powered one.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual 6. With the travel switch in the closed position, rotate the handwheel clockwise ½ turn for Housing Size 6, 1 turn for Housing Size 12, ½ turn for Housing Size 30, and 2 turns for Housing Size180. Adjust the closed travel stop bolt until it bottoms against the output gear and lock it in position with the locknut. 7. After all travel switch adjustments have been completed, replace the indicator rotor and secure the actuator cover.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Disassembly and Assembly Tools required: 2. 3. 4. 5. NOTE 1: Assembly is the opposite of removal NOTE 2: Pictures shown for Housing Size 6 are typical for all sizes See Appendix A for a complete list of basic tools. 6. 7. Remove the switchplate by unscrewing the seven phillips head mounting screws. The switchplate should lift out as an assembly with the camshaft attached. The switchplate can be independently disassembled.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Field Or Factory Installable Options Torque Switches Torque switches are a factory installed and calibrated option available for all Series 70 units. Installation is simple, but due to the requirement for special calibration equipment, it is not recommended for field installation. In fact, modifying the factory torque setting voids the actuator warranty. The unique mechanism is extremely accurate and has excellent repeatability.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Heater To prevent condensation from forming inside the actuator, Bray offers an optional heater. The heater is a PTC (Positive Temperature Coefficient) style which has a unique temperature - resistance characteristic. The heater selfregulates by increasing its electrical resistance relative to its temperature. The heater does not require external thermostats or switches to control its heat output.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Installation Procedure: 1. 2. 3. 4. 5. 6. 7. Disconnect all power to the unit. Remove the on/off duty, 9 point terminal strip and its marker Disconnect all wiring to the terminal strip. All wiring in the actuator is color coded to facilitate wiring, and does not need to be tagged or marked. Field wiring should be marked if it is not already color coded.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual External Signal Feedback Potentiometer Potentiometers for external feedback can be field installed on all continuous duty actuators. Actuators which are not continuous duty do not have a pot gear fitted on their indicator shafts & must be fitted with a new shaft which has a pot drive gear for feedback pot (see Options: Auxiliary Switches). Feedback Potentiometer Kit consists of: 1. One potentiometer assembly 2.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Configuration Housing Size 6 Housing Sizes 12 & 30 Housing Size 180 1. ON/OFF (Intermittent Duty Motor) with Main Switches (Standard OPEN and CLOSE switches) 2 Switch 2 Cams Standard Assembly P/N 2 Switch 2 Cams Standard Assembly P/N N/A 2. ON/OFF (Continuous Duty Motor) with Main Switches (Standard OPEN and CLOSE Switches 2 Switch 2 Cams & Pot Gear Standard Assembly P/N 2 Switch 2 Cams & Pot Gear Standard Assembly P/N N/A 3.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Field Wiring Actuator Wiring diagram for basic unit with C-Form (SPDT) travel switches. (Drawn for actuator in its fully closed condition.) Field Wiring Actuator Wiring diagram for unit with one set of “Voltage Free” C-Form (SPDT) Auxilary open/close travel switches. (Drawn for actuator in its fully closed condition.) Actuator ‘C’-Form Switches, SPDT Housing Size: 6 V3-Sw N.C. N.O. COM. Housing Size: 12 & 30 V3-Sw with Lever N.C. N.O.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual FIELD WIRING ACTUATOR A CLOSE N.O. (VOLTAGE FREE) OPEN N.O. (VOLTAGE FREE) SINGLE PHASE POWER SUPPLY RED B RED C BLUE D BLUE NEUTRAL E LIVE F DIP SWITCHES GROUND CALIBRATE 1 2 3 4 5 6 7 8 9 10 COMMON ON INPUT (-) INPUT (+) +5 VDC + OUTPUT (+) OUTGOING FEEDBACK SIGNAL RED O C MOTOR N YELLOW OR BLACK NEUTRAL WHITE NEUTRAL BLACK LINE Power OPEN YELLOW 4 5 6 7 8 9 10 COM N.C. OPEN GREEN CAM N.C. N.O.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual I. Adjust the open and close speed of your actuator (The fastest closing speed of your actuator is printed on the label of the unit): 1. 2. Use the Close Speed trim pot to adjust the closing speed of your actuator (pot in the fully CCW position equals fastest close speed). Use the Open Speed trim pot to adjust the opening speed of your actuator (pot in the fully CCW position equals fastest open speed). II. Calibrate the Servo: 1. 2. 3.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Receptacles (Quick Connectors) Unless otherwise specified, power receptacles will be 5-pin mini style standard duty with a black anodized aluminum finish. They conform to ANSI B93.55M except in wire color. Euro receptacles will be used for low power instrument and signal cable since they can be supplied shielded.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Spinner A spinner is available to ease and speed the manual override of the Bray Series 70 actuator. The Housing Size 6 units mount the spinner on a lever which screws onto the back of the handwheel. The Housing Size 12-180 units mount the spinner on the rim of the handwheel. Note that care should be exercised in the use of spinner equipped handwheels. Rapid operation of the handwheel to close the valve may cause water hammer.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Appendix A Basic Tools Common To All Units Terminal connections, cam adjustment All switches, terminal strip, torque switch plate Switchplate screws, capacitor Servo trimmer pots Housing Size 6 Mounting nuts Cover captivated capscrews Travel stop adjusting bolts Travel stop jam nuts Motor mount socket flat head capscrew Motor mount socket head capscrew Conduit Entry Plug Housing Size 12 Mounting nuts (small pattern) Mounting nuts (large
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Appendix B Actuator Troubleshooting Chart Problem Actuator does not operate Actuator operates in reverse directions Actuator does not fully close valve (or open valve) Engaging override handwheel does not shut off motor Disengaging override handwheel does not restart motor Motor runs but worm and gear segment do not Corrosion inside unit Possible cause Solutions Override is engaged Push handwheel in all the way Wiring is incorrect
BRAY Series 70 Electric Actuator Operation and Maintenance Manual S70 Servo Pro troubleshooting chart Refer to the Servo Pro Operation Manual for more information. Problem Possible cause Solutions Signal is fluctuating beyond deadband Increase the deadband using the Deadband Actuator moves back and forth near setting trim pot.
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Appendix C Series 70 Housing Size 6 ON / OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 POSITION INDICATOR COVER POSITION INDICATOR SEAL COVER FASTENING SCREWS COVER 0-RING INDICATOR ROTOR CAM ASSEMBLY TERMINAL STRIP TERMINAL STRIP TAG SCREW, PAN HEAD WIRE ASSEMBLY LIMIT SWITCH (SPDT FORM C) HEATER MOUNTING BRACKET HEATER SWITCH PLATE FLAT HEAD SCREW OVERRIDE SWITCH (SPDT FORM C) OVERRIDE SWITCH TRIGG
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Series 70 Housing Size 12 ON / OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 POSITION INDICATOR COVER POSITION INDICATOR SEAL COVER FASTENING SCREWS COVER 0-RING INDICATOR ROTOR CAM ASSEMBLY TERMINAL STRIP TERMINAL STRIP TAG SCREW, PAN HEAD WIRE ASSEMBLY LIMIT SWITCH (SPDT FORM C) HEATER MOUNTING BRACKET HEATER SWITCH PLATE FLAT HEAD SCREW OVERRIDE SWITCH (SPDT FORM C) OVERRIDE SWITCH TRIGGER PIN GREEN G
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Series 70 Housing Size 30 ON / OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 POSITION INDICATOR COVER POSITION INDICATOR SEAL COVER FASTENING SCREWS COVER 0-RING INDICATOR ROTOR CAM ASSEMBLY TERMINAL STRIP TERMINAL STRIP TAG SCREW, PAN HEAD WIRE ASSEMBLY LIMIT SWITCH (SPDT FORM C) HEATER MOUNTING BRACKET HEATER SWITCH PLATE FLAT HEAD SCREW OVERRIDE SWITCH (SPDT FORM C) OVERRIDE SWITCH TRIGGER PIN GREEN G
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Series 70 Housing Size 180 for 3:1 Gear Box ON / OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 COVER FASTENING SCREWS COVER 0-RING CAM ASSEMBLY TERMINAL STRIP TERMINAL STRIP TAG SCREW, PAN HEAD WIRE ASSEMBLY LIMIT SWITCH (SPDT FORM C) HEATER MOUNTING BRACKET HEATER SWITCH PLATE FLAT HEAD SCREW OVERRIDE SWITCH (SPDT FORM C) OVERRIDE SWITCH TRIGGER PIN GREEN GROUND SCREW GREEN CUPWASHER CONDUIT WIRE DEFL
BRAY Series 70 Electric Actuator Operation and Maintenance Manual Series 70 3:1 Gear Box ON / OFF 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 INDICATOR FASTENING SCREW POSITION INDICATOR PLATE POSITION INDICATOR GASKET ACTUATOR/GEAR BOX GASKET COVER TRAVEL STOP BOLT LOCK NUT NYLON FLAT WASHER O-RING ACTUATOR/GEAR BOX FASTENING SCREW OUTPUT GEAR BEARING IDLER/INPUT GEAR BEARING COVER GASKET INPUT GEAR KEY INPUT GEAR IDLER GEAR OUTPUT GEAR BASE LOCK WASHER BASE FASTENING SCREW 25
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