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PXB Board Instructions
Thank you for purchasing an Alvin PXB Portable Drawing Board.
With proper care and handling, your PXB will provide you with years of accurate and productive use.
PXB Boards are available
in the following sizes:
PXB21 16" x 21"
PXB24 18" x 24"
PXB26 20" x 26"
PXB31 23" x 31"
PXB36 24" x 36"
PXB42 30" x 42"
Care and Handling
© Keep all adjustment knobs tight to
ensure straightedge stays parallel
© Clean boar
© Avoid direct exposure to sunlight or extreme heat
© Protect your PXB from damage by storing and transporting in a protective case
© Do not move straightedge with brakes tightened; always move straightedge with a smooth, easy motion
d surface and underside of blade with mild detergent and soft cloth. Wipe dry
Adjustments
It is recommended that you follow this sequence when making
edge b
adjustments t
1. Set the brakes for optimum braking strength
© Unscr
© Retighten brake knobs one full revolution only
© Loosen top adjustment knobs
© Push metal side brackets toward the center until
© Retighten top adjustment knobs
© Brakes are now set and ready to use. Simply
© Be sure to keep top adjustment knobs tightly
2. Set straightedge blade parallel to edge of board
© Loosen one wir
© Pivot the blade until it is in the desired parallel position
© Retighten wire capture screw
o the position of the str
e knobs as f
ak
w br
e
e pads r
both br
tight
secur
ak
en and loosen br
ed or the brakes will not function
est ag
ak
e captur
aight
ar as the
ainst edges of board
e knobs as necessar
w on either side of the blade
e
e scr
lade:
y will go
.
y
Bracket
Brake
Knob
Brake
Side
ad
P
Top
Adjustment
Knob
ire
W
e
ur
Capt
Screw
Boar
Wire
Straightedge
Blade
d
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Troubleshooting
© If brakes do not hold firmly,
follow brake setting instructions
on page 1
© If straightedge is not parallel,
follow adjustment instructions
on page 1
© If straightedge does not slide easily
up and down
© Check that brakes are not dragging
© Check that wires pass properly through pulleys
© Check that pulleys are spinning freely
© Check that spring is not running into pulleys
Replacing or Resetting the Wire
Wiring Diagram
Spring rides on top of wire
© Blade should be positioned in center of board when rewiring and spring should be centered
© Attach eyelet to one end of wire. Connect eyelet to spring
© Thread wire around pulleys as shown in wiring diagram
© Extend spring approximately 1" beyond unstretched length
© Secure wire to second eyelet and trim excess
Spare Parts
Spare parts can be ordered from your local Alvin dealer.
Visit our website www.alvinco.com for a dealer in your area
PXP Kit contains wire, spring, metal side brackets,
op adjustment knobs, screws and cable eyelets
t
BX21 21" straightedge blade for PXB21
BX24 24" straightedge blade for PXB24
BX26 26" straightedge blade for PXB26
BX31 31" straightedge blade for PXB31
BX36 36" straightedge blade for PXB36
or PXB42
edge b
BX42 42" str
BX-2 Metal side brackets. Set of 2
KN6 T
PHX C
TF2 Rubber grip track. Set of 2
BX-SM Folding legs for PXB21, 24, and 26. Set of 2
BX-LG Folding legs for PXB31, 36, and 42. Set of 2
aight
op adjustment knobs. Set of 6
ying handle
arr
lade f
Alvin & Company, Inc. Bloomfield, CT • Grand Prairie, TX
www.alvinco.com
Oct 2005
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