Side
Mounted
Float Level
Switch
Tuffy
®
II
Liquid Level Controlswith Electric Switches
Installation and Operating Manual
Страница 1: ...Side Mounted Float Level Switch Tuffy II Liquid Level Controls with Electric Switches Installation and Operating Manual...
Страница 2: ...use in Installations Category II Pollution Degree 2 If equipment is used in a manner not specified by the manufacturer protection provided by equipment may be impaired Notice of Trademark Copyright a...
Страница 3: ...3 Troubleshooting 10 2 3 1 External Causes 10 2 3 2 Tuffy II Causes 10 2 4 Preventive Maintenance 12 2 4 1 What to Do 12 2 4 2 What to Avoid 13 2 4 3 Switch Mechanism Replacement 13 2 5 Agency Approv...
Страница 4: ...actuation levels Maximum nozzle lengths for each model are specified in Figure 1 2 Ensure that the mounting nozzle or coupling is within 3 of horizontal If mounting the TUFFY in an external cage ensur...
Страница 5: ...de the flange on the control to the vessel mounting flange and align bolt holes Ensure that the conduit entry is pointing down See Figure 3 4 Ensure that the flange gasket is seated properly Install f...
Страница 6: ...T Dry Contact switch with silver contacts Figure 7 Terminal Connections SPDT Dry Contact switch with silver or gold contacts Figure 8 Terminal Connections SPDT HS switch with silver or gold contacts F...
Страница 7: ...required by process conditions Installations with ambient temperatures up to 176 F 80 C require wire with a minimum rating of 185 F 85 C as required by the process conditions Use a minimum of 14 AWG w...
Страница 8: ...n refer to Figures 9 and 10 By subtracting the actuat ing level of the lower hole on the adjusting plate on falling level from the actuating level of the upper hole on the adjusting plate on rising le...
Страница 9: ...ace service consult factory 2 0 Reference Information This section presents an overview of the operation of the TUFFY II Liquid Level Switches including information on troubleshooting common problems...
Страница 10: ...ether at the time of installation or during routine service thereafter check for the following potential external causes first Blown fuses Tripped reset button s Open power switch Faulty equipment con...
Страница 11: ...the entire control must be replaced 7 If the complete TUFFY II level switch operates properly when removed from service check to ensure that liquid is entering the tank or vessel A closed valve or clo...
Страница 12: ...xposed Should the housing cover become damaged or misplaced obtain a replacement immediately 2 Inspect switch mechanisms terminals and connections monthly TUFFY II level switches may at times be expos...
Страница 13: ...ER put insulation over the switch housing 2 4 3 Switch Mechanism Replacement 1 Have the proper replacement switch mechanism on hand See Section 2 6 1 on page 14 for replacement parts 2 Remove housing...
Страница 14: ...Category II Pollution Degree 2 Special conditions for safe use When the material is equipped with an aluminum enclosure all precautions shall be taken to avoid all impacts or frictions which can resul...
Страница 15: ...arbon steel Hastelloy C clad carbon steel Configurations Tank 2 NPT 3 4 5 6 ANSI Flange Chambered 1 top bottom NPT Wetted parts Float Trim 316 316L stainless steel or Hastelloy C Process Conditions Pr...
Страница 16: ...contacts 65 to 750 F 54 to 399 C 65 to 650 F 54 to 343 C HS with gold contacts 65 to 750 F 54 to 399 C 65 to 650 F 54 to 343 C Snap with silver contacts 40 to 750 F 40 to 399 C 40 to 650 F 40 to 343 C...
Страница 17: ...44 607 Tuffy II Liquid Level Switch 17 2 7 3 Switch Temperature Ratings continued 350...
Страница 18: ...44 607 Tuffy II Liquid Level Switch 18 2 7 3 Switch Temperature Ratings continued...
Страница 19: ...is specific for cast iron housing Subtract 0 31 for aluminum housing Dimension T31 T32 T33 T34 T35 T3B T3C B 3 75 95 7 5 190 12 25 311 C 8 66 220 7 86 199 D 3 59 91 3 36 85 3 58 91 3 59 91 3 33 85 6...
Страница 20: ...T 1 31 33 1 31 33 6 40 163 11 25 12 286 3 4 50 114 Dia Tuffy Chamber 2 7 4 Physical continued Dimensional Specifications inches mm This dimension is specific for cast iron housing Subtract 0 31 for al...
Страница 21: ...rential Wide switch differential from approximately 1 36 to 18 26 which may be adjusted in the field by repositioning pins on the adjustment plate 44 607 Tuffy II Liquid Level Switch 21 Basic Model Fl...
Страница 22: ...ion Material Design Code Type Codes Size Codes Codes N NPT 1 5 2 B F K P A ANSI RF Flange 150 1 2 3 5 3 4 5 6 All B ANSI RF Flange 300 1 2 3 5 3 4 5 6 All C ANSI RF Flange 600 2 5 3 4 A B E F J K N P...
Страница 23: ...Material Electric Switch Rating Maximum Process Temperature vAC vDC 120 240 24 120 Cast Iron Housing Cast Alum Housing 0 SPDT w silver contacts 10 0 10 0 6 0 0 6 750 F 399 C 650 F 343 C 1 DPDT dual S...
Страница 24: ...TyPE 2 8 Model Numbers 2 8 3 Interface Models Process Connection ANSI Flanges Wetted Materials Carbon steel and or 316 316L SS Max Float Pressure 750 psi 52 bar Min SG of Lower Liquid 0 81 Min SG diff...
Страница 25: ...6 for minimum process temperatures Code Contact Type and Material Electric Switch Rating Maximum Process Temperature vAC vDC 120 240 24 120 Cast Iron Housing Cast Alum Housing 0 SPDT w silver contacts...
Страница 26: ...SIzE 4 3 75 inch 95 mm stem extension 8 7 50 inch 190 mm stem extension C 12 25 inch 311 mm stem extension STEM EXTENSION LENGTH B DIMENSION See page 20 A ANSI RF Flange 150 B ANSI RF Flange 300 PROC...
Страница 27: ...e 16 for minimum process temperatures Code Contact Type and Material Electric Switch Rating Maximum Process Temperature vAC vDC 120 240 24 120 Cast Iron Housing Cast Alum Housing 0 SPDT w silver conta...
Страница 28: ...or consequen tial damage will be allowed Return Material Procedure So that we may efficiently process any materials that are returned it is essential that a Return Material Authorization RMA number b...
