Installation Instructions for the Issue 5 Enclosed Basic Series Limit Switches 88173 MOUNTING WARNING 1. Mount switches on flat, rigid surface. PERSONAL INJURY E6 Side Mounting Pattern DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product 25,4 mm 1.00 in could result in personal injury. E6 SIDE MOUNTING Failure to comply with these instructions could result in 2X CLEARANCE HOLE FOR 6 MOUNTING SCREW* death or serious injury. V6 Flange Mounting Pattern GENERAL INFORMATION 41,6 mm 1.63 in Honeywells Enclosed Basic Series of Limit Switches are V6 FLANGE MOUNTING usable in many applications. The wide variety of actuators offered and their robust diecast housing make them ideal for 2X 4,3 mm 0.17 in MOUNTING HOLES applications that require reliable switching and performance. G1 Side Mounting Pattern There are several styles of enclosed basic switches, includ- ing side and flange mounting switches as well high capacity 75,0 mm 2.95 in and double pole type. Refer to switch labeling for applicable electrical ratings and G1 SIDE MOUNTING 31,0 mm 1.22 in certifications For technical product suppor t, engineering drawings, 2X 5,5 mm 0.216 in MOUNTING HOLES technical data, and additional information for products from H1 Flange Mounting Pattern Honeywells Enclosed Basic Series of Limit Switches please 41,9 mm visit sensing.honeywell.com, or call the support numbers on 1.65 in the last page of this document. H1 FLANGE MOUNTING 2X 0.22 5,5 mm 0.22 in MOUNTING HOLES 2. Boot-sealed and side-mounting switches use sealing wash- ers under screw heads on the sides between switch and mounting surface on other side to maintain seal. 3. Unsealed, side mounting switches: Use lockwashers under screw heads on one side under nut on other side. 4. Connect conduit to conduit opening. Apply conduit sealing if required by application. INSTALLATION TIPS 1. Do not lubricate any internal part of the switch. The inter- nal switch does not require any additional lubrication 2. When installing the switch, ensure that it is not the low point in the conduit run. Doing so will ensure that con- densation created in the conduit will not flow into the switch housing. 3. Do not enlarge the mounting holes on side mounting switch. Doing so will compromise the internal switching ele- ments seal integrity. Sensing and ControlEnclosed Basic Series Limit Switches ISSUE 5 88173 N18 TYPES FIELD ADJUSTABLE ACTUATOR MODELS If actuator or basic switch is replaced, the actuator may need Some enclosed basic switches are field adjustable. This in - adjustment to duplicate original switch operating point. To adjust cludes models with the nomenclature 2RN2, 2RQ2, 2RN28, operating point, remove lower seal band from base of seal boot. 2RQ28, 2RN62, 2RQ62, RQ2X2, RN2X1. Peel back seal boot to expose bushing. With basic switch unoperated, slowly turn bushing clockwise until basic switch op- ADJUSTABLE RANGE erates. Do not turn further after operating click is heard. Turn bushing back 1/2 turn. Tighten jam nut on bushing. LEVER RETAINING NUT MAINTAINED CONTACT (RESET) MODELS LEVER BASE Listings with an X in their par t number are maintained contact RETAINING NUT switches. These switches remain actuated after the operating force on either plunger has been applied. The actuated plunger will reset when the opposing plunger is actuated. NOTE: The top plungers (the plungers on the stationary portion of the housing) provide more accurate and uniform operation than the reset plungers and should be used when closely held operating characteristics are required. ADJUSTABLE RANGE 360~ ABOUT THE PLUNGER AXIS Vertical Adjustment Range N2 & Q2 - Roller lever 225 To adjust: loosen N4 & Q4 - Hand op. 180 hex nut, adjust arm The lever can be adjusted in two ways. The following process to desired position, N62 & Q62 - Rod lever 225 details how to perform the adjustments. tighten hexnut. N28 & Q28 - One way 180 Adjusting the horizontal position of the lever. 1. One lever ar m serration: 8.18. 1. Loosen the lever base retaining nut, so that the lever assem- 2. One serration of lever ar m and fluted washer as a unit: 8. bly is free to rotate about the axis of the plunger. 3. One serration of lever arm with one serration of fluted washer 2. Rotate the lever to the desired position. The lever is adjust- in opposite direction: 0.18. able 360 degrees about the axis. 3. Once the desired position is reached re-tighten the lever LUBRICATING INSTRUCTIONS for Roller Plunger base retaining nut. The lever base should not be able to Switches only (N80, N81, Q8, Q9, Q81) rotate when properly tightend. For maximum life, periodically put a drop or two of lightweight Adjusting the vertical position of the lever. oil on the roller. Specific application conditions will determine lubricating frequency. 1. Loosen the lever retaining nut, so that the lever freely rotates. 2. Set the position of the lever to the desired position. Roller levers should be positioned so that they are able to actuate the plunger. 3. Once the desired position is reached re-tighten the lever re- taining nut. When pushed the lever should act upon the lever mechanism to actuate the switch. 2 Honeywell Sensing and Control