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SOR 681 Point Level Control, General Instructions Manual, Page: 12 / 16

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SOR 681 Point Level Control General Instructions Manual Download Page 12

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Form 924 (05.18) ©SOR Inc.

Fuse Replacement (AC units only)

Use replacement fuse part number: 2806-001 1/2A

 Disconnect power to the unit.

 Remove the housing cover.

 Unplug the fuse (F1) from the circuit board (See 

). The fuse is located on the 

 

opposite side of the circuit board from the wiring terminals.

 Plug in replacement fuse.

 Replace the housing cover. 

 Reconnect power to the unit.

Reverse Side of Printed Circuit Board

Relays

Transformer

Location

RV1

F1

(120VAC and 
240VAC only)

RV2

RV3

Summary of Contents for 681 Point Level Control

Page 1: ...to select on and off level points for the control All adjustments will be present but only those corresponding to the accessory in the model number will function RF Point Level Control with Sensor Mo...

Page 2: ...50 VAC 10 Amp 30 VDC resistive Remote distance from sensor 150 45m Adjustment range Range I 0 300pf 5pF sensitivity Range II 300 1000pf 1pF sensitivity Set point stability Range I 0 075 pF o F 0 13 pF...

Page 3: ...VL LED turns on NOTE Do not turn the Level adjustment past 25 turns Damage to the unit could result Turn the LEVEL adjustment counterclockwise until the green LED turns off Slowly move a hand toward t...

Page 4: ...anks vats sumps or basins may require a locally made bracket mount similar to that shown in Optional Configuration is a raised face or flat face ANSI flange See Form 1100 for selection See and Orienta...

Page 5: ...se a remote circuit board rests in a plastic holder Attach the cable wires to the terminal block on the circuit board as follows Connections Inside Electronics Housing Inside the electronics housing u...

Page 6: ...Remove two mounting screws and slide out PC board to expose green ground screw Internal Primary Equipment Ground Earth in base of housing 4 Connect green line ground wire to green ground screw on bas...

Page 7: ...unding for the process connection This can create a parallel grounding circuit that will impair operation and calibration Green LVL LED Alarm Relay Terminal Blocks Failsafe Switch Level Relay Terminal...

Page 8: ...lay Reconnect the probe wire to the circuit board The circuit will return the ALARM relay contacts to the normal state Set Point Calibration Disconnect line power supply Remove the housing cover Rotat...

Page 9: ...cessory FAILSAFE LO Move the process to the level where switching is needed and move the FAILSAFE switch to LO If the green LVL LED is off turn the LEVEL adjustment clockwise until the LED just lights...

Page 10: ...ower 3 Broken power supply wire 4 Blown fuse 5 Blown varistor 1 Check power supply source 2 check terminal block wiring 3 Check wiring integrity 4 Replace fuse F1 5 Replace varistor VR1 VR2 or VR3 LVL...

Page 11: ...rews in the circuit board bracket to the plastic holder These screw are self tapping Do not over tighten Reconnect power and replace the housing cover Circuit Board Replacement Disconnect power to the...

Page 12: ...ove the housing cover Unplug the fuse F1 from the circuit board See The fuse is located on the opposite side of the circuit board from the wiring terminals Plug in replacement fuse Replace the housing...

Page 13: ...Form 924 05 18 SOR Inc 13 16 Dimensions Dimensions are for reference only Contact the factory for certified drawings for a particular model number Linear mm inches Drawing 0390654...

Page 14: ...14 16 Form 924 05 18 SOR Inc Dimensions Dimensions are for reference only Contact the factory for certified drawings for a particular model number Linear mm inches Drawing 0390653...

Page 15: ...Form 924 05 18 SOR Inc 15 16 Dimensions Linear mm inches Drawing 0390653 Dimensions are for reference only Contact the factory for certified drawings for a particular model number...

Page 16: ...16 16 Form 924 05 18 SOR Inc 14685West105thStreet Lenexa KS66215 913 888 2630 800 676 6794USA Fax913 888 0767 Registered Quality System to ISO 9001 Printed in USA www sorinc com...

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