Office Star Products DC640 User manual

DC640 LUMBAR SUPPORT DRAFTING CHAIR
OPERATING INSTRUCTIONS
1
FEATURES
• Height Adjustment
To raise seat, remove pressure from seat and lift lever (1). To
lower seat height, sit on chair and lift lever (1).
• Backrest Height Adjustment
Loosen upper knob on Backrest post to raise or lower the
height of Backrest. TIGHTEN KNOB COMPLETELY !
• Seat Depth Adjustment
Loosen knob underneath chair, slide Back assembly in or out
to desired position. TIGHTEN KNOB COMPLETELY !
• Footring Height Adjustment
Loosen knob on Footring to raise or lower the height of
Footring rest. TIGHTEN KNOB COMPLETELY !
WARNING
1. Use this product only one person at a time.
2. Do not use this chair unless all bolts, screws, and knobs are
securely tightened.
3. Check that all bolts, screws, and knobs are tight every three
months or as needed.
4. Dispose of packing material properly. Do not use plastic
cover as head covering. It may cause suffocation.
5. Do not use this chair as a stepladder.
6. Use this chair for its intended purpose only.
7. Use mild detergent only for cleaning.
Warranty
15 Year limited warranty on all non moving metal parts. Swivel mechanisms, pneumatic cylinder, plastic parts, base and casters for 5
years. Upholstery fabric against wear and deterioration for 3 years.
To make a warranty claim, contact Parts Department. Provide model number and description of the problem and obtain return
authorization.
At it’s option Ofce Star Products will: (a) Supply compatible components of current manufacture. (b) Repair the customer’s component.
The customer must prepay freight on any components returned to the factory. Return freight on components still in warranty will be paid
by Ofce Star Products.
This warranty will not cover labor, freight or damage caused by neglect, abuse, mis-use, alterations, or damage caused by shipment,
re, or ood.
All warranties are limited to the original purchaser for normal commercial usage dened as a standard forty hour work week by persons
weighing 250 lbs. or less. When usage exceeds 40 hours per week, a two year warranty on all parts applies. Fabric is warranted for one
year.
Our quality standards are among the highest in the industry. Sometimes, no matter how hard we try, there are times when parts
are damaged or missing. Our Parts Department will do everything possible to promptly remedy the problem. Contact us via email
parts@ofcestar.net, by Fax [phone], or toll free parts number 1-800-950-7262, Monday through Friday 8:00 a.m. - 5:00 p.m.
Pacic Time.

DC640 LUMBAR SUPPORT DRAFTING CHAIR
ASSEMBLY INSTRUCTIONS
Remove all parts from carton, separate them into part numbers as indicated on the Parts List and make sure part
quantities are correct.
STEP 1 Insert ve Casters (1) into Base (2). Be sure all casters are inserted and locked into place.
STEP 2 Insert Pneumatic Cylinder (3) into Base (2),
STEP 3 Loosen Footring Height Adjustment Knob (18), slide Footring (17) down Pneumatic Cylinder (3). Hand
tighten Footring Height Adjustment Knob (18),slide plastic Bellows (4) over Pneumatic Cylinder (3).
STEP 4 Align holes of Back Rest (11) to Backrest Plastic Plate (13). Place Back Frame (9) ush into Backrest
Plastic Plate (13), align Backrest Metal Plate (14) and secure assembly with two Large Machine Screws (15).
FULLY TIGHTEN SCREWS. Cover with Backrest Plastic Cover (16).
STEP 5 With arrows facing the front of chair attach Mechanism (8) to Seat (12) using six Small Machine
Screws (10). Slide Back Frame (9) with attached Back Rest (11) between Seat (12) and Mechanism (8). Secure
with Backrest Depth Adjustment Knob (5) through Flat Washer (6) and Lock Washer (7). FULLY TIGHTEN ALL
FULLY TIGHTEN ALL SCREWS AND KNOB.
Place Upper assembled portion of chair onto Pneumatic Cylinder (3) and apply downward pressure.
ATTENTION: MAKE SURE ALL SCREWS ARE FULLY TIGHTENED BEFORE USING CHAIR.
Parts Qty.
1. Casters . . . . . . . . . . . . . . . 5
2. Base . . . . . . . . . . . . . . . . . 1
3. Pneumatic Cylinder . . . . . . 1
4. Plastic Bellows. . . . . . . . . . 1
5. Backrest Depth Adjustment
Knob . . . . . . . . . . . . . . . . . . 1
6. Flat Washer . . . . . . . . . . . 1
7. Lock Washer . . . . . . . . . . . 1
8. Mechanism . . . . . . . . . . . . 1
9. Back Frame . . . . . . . . . . . 1
10. Small Machine Screws . . 6
11. Back Rest . . . . . . . . . . . . 2
12. Seat . . . . . . . . . . . . . . . . . 1
13. Backrest Plastic Plate . . . . .1
14. Backrest Metal Plate . . . . . .1
15. Large Machine Screws . . . .2
16. Backrest Plastic Cover . . . . 1
17. Footring . . . . . . . . . . . . . . . . . 1
18. Footring Height Adjustment
Knob . . . . . . . . . . . . . . . . . . . 1
© Ofce Star Products August 2003
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