270 Series Stools. 270 Series. Service and Parts Manual. Serial Number Prefix: V & VAB. (270 thru 279) FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

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1 270 Series Stools Model Numbers: 270 Series (270 thru 279) Serial Number Prefix: V & VAB Service and Parts Manual FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY SF-190 Part No Rev. (9/11/17)

2 Table Of Contents Section C Section B Section A General Information Section D GENERAL INFORMATION Symbols... iii Ordering Parts... iii Serial Number Location... iii Specifications... iv Cleaning... iv Model Identification... v TROUBLESHOOTING not available TESTING & REPAIR not available ACCESS PROCEDURES not available WIRING DIAGRAMS not available Section E Section E EXPLODED VIEWS / PARTS LISTS Bases / Casters / Glides: Composite Bases... E-2 Aluminum Bases... E- Manual Spindle Mechanism... E-4 Air Lift Mechanism: Hand Lever Release...E-5* Foot Pedal Release...E-6* Upholstered Seat...E-7 Backrest Assembly...E-8 Torso Band Assembly...E-9 Accessories & Packaging... E-10 FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

General Information Symbols Caution Indicates a potentially hazardous situation which could result in injury if not avoided.

Indicates that the component the check mark appears beside should be tested before replacing it. In Section A, test the components in the order indicated. (ex.

Indicates the function / component is working properly. No action required. Indicates the function / component is working, but a problem exists.

3 General Information Symbols Caution Indicates a potentially hazardous situation which could result in injury if not avoided. Equipment Alert Indicates a potentially hazardous situation which could result in equipment damage if not avoided. Note Amplifies a procedure, practice, or condition. Indicates that the component the check mark appears beside should be tested before replacing it. In Section A, test the components in the order indicated. (ex. 1st then, 2nd ) Refer to Section B for component testing procedures. These symbols are used throughout this manual to represent the operational status of table functions and components. Indicates the function / component is working properly. No action required. Indicates the function / component is working, but a problem exists. Indicates the function / component is not working at all. Ordering Parts General Information The following information is required when ordering parts: Serial number & model number Part number for desired part. [Refer to Exploded Views / Parts Lists section] Non-warranty parts orders may be faxed to Midmark using the Fax Order Form in the back of this manual. For warranty parts orders, call Midmark's Technical Service Department with the required information. Hours: 8:00 am until 5:00 pm EST [Monday - Friday] Phone: 1-(800)-Midmark Model / Serial Number Location Model / Serial Number Midmark Corporation 2006 SF-1874 MA76100i iii Rev 10/8/12

4 General Information Specifications Weight Rating (by model): lbs (159 kg) lbs (102 kg) lbs (159 kg) lbs (102 kg) lbs (159 kg) lbs (102 kg) lbs (159 kg) lbs (102 kg) lbs (102 kg) lbs (102 kg) Seat Height (adjustable): Minimum...18 in. (46 cm) Maximum in. (62 cm) Seat Cushion Dimensions: Diameter...16 in. (41 cm) Thickness... in. (7.6 cm) Backrest Dimensions: Height x Width...7 in. x 1 in. (18 cm x cm) Thickness...1 in. (2.5 cm) Cleaning Clean upholstery with diluted bleach solution. Ratio: 10:1 (water:bleach) Clean the stool as necessary, wiping the painted metal and plastic surfaces with a clean, soft cloth, and mild cleaner. iv Midmark Corporation 2006 SF-1874 Rev. 9/20/17

5 General Information Model Identification / Compliance Chart Fire Code Ratings All standard upholstery complies with: California Bureau of Home Furnishing Technical Bulletin 117 Optional upholstery is available that complies with: California Bureau of Home Furnishing Technical Bulletin 1. Model Height Adjustment Release Lever 5-Point Base Backrest Torso Band 270 Basic Stool 271 Basic Stool Manual - Composite Manual - C omposite 272 Basic Stool Air Lift Straight Handle Composite 27 Basic Stool Air Lift Straight Handle C omposite 274 Basic Stool 275 Basic Stool Manual - Aluminum Manual - A luminum 276 Basic Stool Air Lift Hanger Handle Aluminum 277 Basic Stool Air Lift Hanger Handle A luminum 278 Surgeon Stool Air Lift Foot Pedal A luminum 279 Surgeon Stool Air Lift Hanger Handle A luminum Midmark Corporation 2006 SF-1874 v

6 General Information vi Midmark Corporation 2006 SF-1874

7 Exploded Views & Section EParts Lists Model Page Bases / Casters / Glides: Composite Base... E-2 Aluminum Base... E- Manual Spindle Mechanism... E-4 Air Lift Mechanism: Models: 272 / 27 / 276 / 277 / E-5 Model: E-6 Upholstered Seat... E-7 Backrest Assembly... E-8 Torso Band Assembly... E-9 Accessories & Packaging... E-10 E-1

8 Options Item Description Qty. 1 Composite Base (black) Caster (standard)... 5 MA76200i Options Glide Soft Rubber Caster Locking Caster Caster (locked when weight applied)... 5 Always Specify Model & Serial Number E-2 Base / Casters / Glides: Composite Base Midmark Corporation 2007 SF-190 Rev. (12/16/1) Models: Serial Numbers: 270 / 271 / 272 / 27 V220 thru V / 271 / 272 / 27 VAB thru Present

9 Options NOTE: Glides cannot be used on 278 model Item Description Qty. 1 Aluminum Base Caster (standard)... 5 Set Screw (only used on 278 models built prior to: May 18, 2009)... Options 4 Soft Rubber Caster Glide (not for use on 278 model) Locking Caster Caster (locked when weight applied)... 5 MA762400i Always Specify Model & Serial Number Models: Serial Numbers: 274 / 275 / 276 / 277 / 278 / 279 V2200 thru V / 275 / 276 / 277 / 278 / 279 VAB thru Present Base / Casters / Glides: Aluminum Base Midmark Corporation 2007 SF-190 Rev. (12/16/1) E-

10 Item Description Qty. 1 Swivel Weldment (manual) Manual Spindle... 1 MA762500i Always Specify Model & Serial Number E-4 Manual Spindle Mechanism Midmark Corporation 2007 SF-190 Rev. (12/16/1) Models: Serial Numbers: 270 / 271 / 274 / 275 V2200 thru V / 271 / 274 / 275 VAB thru Present

11 Model: 272 / 27 Model: 276 / 277 / MA762600i Item Description Qty. 1 Swivel Weldment (for 272 & 27) Air Lift Cylinder... 1 Swivel Weldment (for 276 / 277 / 279)... 1 Always Specify Model & Serial Number Models: Serial Numbers: 272 / 27 V2200 thru V / 277 / 279 V2200 thru V Air Lift Mechanism: Hand Lever Release Midmark Corporation 2007 SF-190 Rev. 8/1/12 E-5

12 Model: 272 / 27 Model: 276 / 277 / MA762600i Item Description Qty. 1 Release Handle Kit (includes items & 4). 1 2 Release Handle Kit (includes items & 5). 1 Stool Seat Base Weldment Lever Handle Replacement Kit (includes items 6 & 7) Handle Weldment Replacement Kit (includes items 6 & 8) Handle Pivot Lever Assembly Handle Weldment Air Lift Cylinder... 1 Always Specify Model & Serial Number E-5.1 Air Lift Mechanism: Hand Lever Release Midmark Corporation 2007 SF-190 Rev. (12/16/1) Models: Serial Numbers: 272 / 27 V thru V / 27 VAB thru Present 276 / 277 / 279 V thru V / 277 / 279 VAB thru Present

13 Item Description Qty. 1 Swivel Weldment Air Lift Cylinder Assembly... 1 Pedal Weldment Collar Retro Kit (includes mounting hardware) Shoulder Screw (apply threadlock adhesive) Set Screw (1/4-20 x /8")... MA762700i Always Specify Model & Serial Number Models: Serial Numbers: 276 / 277 / 278 V thru V / 277 / 278 VAB thru Present Air Lift Mechanism: Foot Pedal Release Midmark Corporation 2007 SF-190 Rev. 12/16/1 E-6

14 ATTENTION: Refer to Current Color Options link for appropriate numbers to replace -xxx. Refer To: Color Selector... a) xxx b) xxx Model: 270 thru c) xxx d) xxx Model: 278 & a) xxx b) xxx c) xxx d) xxx MA762800i Item Description Qty. 1 Upholstered Seat Cushion: a) Standard & UltraFree... 1 b) Ultra-Premium... 1 c) Standard & UltraFree (Cal 1)... 1 d) Ultra-Premium (Cal 1) Swivel... 1 Screw (1/4-20 x 7/8") Nut (1/4-20) Lockwasher Hex Bolt (1/4-20 x 5/8")... 4 Always Specify Model & Serial Number E-7 Upholstered Seat Midmark Corporation 2007 SF-190 Rev. (9/11/17) Models: Serial Numbers: All V2200 thru V All VAB thru Present

15 ATTENTION: Refer to Current Color Options link for appropriate numbers to replace -xxx. Refer To: Color Selector... a) 9A66001-xxx b) 9A66002-xxx 1 2 a) xxx b) xxx MA762900i Item Description Qty. 1 Backrest Assy. (includes items 2 thru 8) a) Standard & UltraFree... 1 b) Standard & UltraFree (Cal 1) Upholstered Backrest Pad: a) Standard & UltraFree... 1 b) Standard & UltraFree (Cal 1)... 1 Backrest Cover Backrest Bar Assy (includes item 5) Knob - lower (includes washer) Mounting Bracket (includes washer & item 7) Knob - upper Screw (1/4-20 x 7/8")... 4 Always Specify Model & Serial Number Models: Serial Numbers: 271 / 27 / 275 / 277 V2200 thru V / 27 / 275 / 277 VAB thru Present Backrest Assembly Midmark Corporation 2007 SF-190 Rev. 9/11/17 E-8

16 ATTENTION: Refer to Current Color Options link for appropriate numbers to replace -xxx. Refer To: Color Selector a) xxx b) xxx Item Description Qty. 1 Upholstered Torso Pad: a) Standard & UltraFree... 1 b) Standard & UltraFree (Cal 1) Screw (/8"-16 x 1-/4")... 4 Screw (/8"-16 x 2-1/4") Knob Mounting Bracket Weldment Handle Knob (apply threadlocking adhesive) Handle Handle Mount Bushing Mounting Post Support Plate... 1 MA76000i Always Specify Model & Serial Number E-9 Torso Band Assembly Models: 278 / / 279 Midmark Corporation 2007 SF-190 Rev. (9/11/17) Serial Numbers: V2200 thru V VAB thru Present

17 NOTE: Foot Ring cannot be used on A NOTE: Backrest Accessory cannot be used on 278 / 279 NOTE: Lab Height Extension Kit cannot be used on 278 9A MA76200i Item Description Qty. 1 Foot Ring " Lab Height Extension... 1 Packaging - Box Refer to: "Backrest Assembly"... Ref Always Specify Model & Serial Number Models: Serial Numbers: See NOTES in illustration for accessory-model compatibility Accessories & Packaging Midmark Corporation 2007 SF-190 Rev. /17 E-10

18 COMMENTS The Technical Publications Department of Midmark Corporation takes pride in its manuals. We are sure that our manuals will fill all your needs when you are performing scheduled maintenance, servicing, or repairs on a Midmark product. However, if you find any errors or feel there should be a change, addition, or deletion to the manuals, please let us know. We will correct any errors that we are made aware of and we will review requests for changes, additions, or deletions to the manuals and incorporate those requests deemed appropriate. If you see something in one of our manuals that you like or dislike, please let us know. Also, if there is something you feel we could do to produce a better manual, please let us know. If an error is found, please list the page and paragraph/figure in which the error was found along with a brief description of what the error is. If the correction to the error is known, please include that information also. If a change, addition, or deletion is being requested, please list the page and paragraph/figure needing the change, along with a brief description of how you feel the paragraph/figure should be changed. Please fax or mail a copy of this completed comment sheet to: Midmark Corporation ATTN: Technical Publications Dept. 60 Vista Drive Versailles, Ohio 4580 Fax: (97) Page Number Paragraph/Figure Description

19 ATTENTION: CUSTOMER SERVICE DEPARTMENT IMPORTANT NOTES: 1) Use this form for all non-warranty orders only. Warranty orders must be telephoned in ( ). 2) FAX number to send order to: ) All emergency orders must be Midmark by 1:00 pm EST. 4) All underlined headings should be filled in prior to submittal. ADDITIONAL COMMENTS: NAME: SERVICE PARTS FAX ORDERING FORM (Do not tear out this page. Photo copy this page for use only.) DATE: / / TIME: METHOD OF SHIPMENT: PRIORITY: MODEL #: SERIAL #: SALES ORDER # (if applicable) ADDRESS: CITY: STATE: ZIP: CONTACT: PHONE: FAX #: SHIP TO: LINE # PART NUMBER QTY. DESCRIPTION COLOR (if applicable) CREDIT CARD INFORMATION NON-EMERGENCY ORDER {to ship within 72 hours if part(s) are in stock.} EMERGENCY ORDER {to ship within 24 hours if part(s) are in stock.} [see note ] am pm DEALER P.O. #: ACCOUNT #: CARD TYPE CARD # EXP. DATE / / NAME ON CARD SIGNATURE

20 Midmark Corporation 60 Vista Drive P.O. Box 286 Versailles, OH Fax

-001. Air Lift Physician Stool. Serial Number Prefixes: BZ, V & VAF FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY -001

-001. Air Lift Physician Stool. Serial Number Prefixes: BZ, V & VAF FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY -001 427-001 Air Lift Physician Stool Serial Number Prefixes: BZ, V & VAF 427-001 FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY SF-1254 Part No. 004-0038-00 Rev. F (11/18/14) TABLE OF CONTENTS Section/Paragraph