/ Marley 5550 Vibration Switch / User Manual 07-1274
Installation This bulletin should be used by experienced personnel as a guide to the installation of the Model 5550 vibration switch. Selection or installation of equipment should always be accompanied by competent technical assistance. Caution Before proceeding to install and wire the unit, read and thoroughly understand these instructions. The switch model number should be checked to confirm that you have the correct hazardous area rating for your application.
Installation Setpoint Adjustment Warning The vibration switch is a safety circuit acting as a run permissive for the fan VFD or starter. Follow lock out tag-out procedures on the fan starting equipment. • The trip point is factory set and may not have to be adjusted. • To test the operation of the electrical contacts in the vibration switch please follow the procedure below. Do not strike the device to test for a trip. emove the cover to expose the inside of the switch.
Installation Turning Adjustment Screw Too Far Counter-Clockwise • If the adjusting screw is turned too far counter-clockwise (approximately 3-4 turns) the switch will trip and will not stay in a reset position after depressing the manual reset pushbutton. • At approximately 11 turns the switch will trip and cannot be reset because the spring and adjusting rod have dislodged out of position. There is no mechanical stop position when turning counter clockwise.
Installation Electrical Reset and Startup Lockout The optional electrical reset circuit consists of an electrical solenoid in series with a thermistor. If the rated voltage is continuously applied to the reset circuit at machine startup, the reset solenoid energizes for a fixed time interval (approximately 30 seconds), after which time the solenoid is automatically de-energized by the thermistor. This action provides a trip lockout during machine startup roughness.
Installation Specifications Diagram * = SEE FOOT PRINT TABLE NEXT PAGE (E=1, 6 SHOWN) 4X 19.0mm X 9.5mm OBROUND (.750 X .375) A Mounting Holes* Vibr A lert 480 VAC - Class I I , Div 1 , Groups INCREASE SETPOINT LISTED 5550 341R S/N 108mm [4.25] W * , MAX . , 15A . / 250 VDC , MAX . , 1/4A . / 1/4 HP , 250 VAC Class I , Div 1 , Groups 1/8 HP , 125 VAC VIBRATION SWITCH FOR USE IN HAZARDOUS LOCATIONS MODEL 5550 B * Mounting Holes RESET COIL @ MAX.
Installation How To Order B A C Example: 5550A D E F 0 2 0 - 55501 1 1 - Hazard Rating 1= UL, cUL Explosion Proof, Class I, Div 1, Groups C & D Class II, Div 1, Groups E, F & G UL, cUL Explosion Proof, Class I, Div 1, Groups B, C & D Class II, Div 1, Groups E, F & G 2= DEMKO 02 ATEX 0212409 3= CENELEC Flameproof, EEx d IIB T6 4= CENELEC Flameproof, EEx d IIB+H T6 B Contacts C Full Scale Range CE 0600 2 11 2 GD 1= SPDT 2= DPDT 1= 5 g 2= †2 g 3= 10 g D Reset Coil & Start Up Del
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