Bulletin JD21 Page 4 Printed in USA 0599
ANTUNES CONTROLS
ANTUNES CONTROLS
RANGE ADJUSTMENT
Ranges
BLUE Spring Adjustable from .07" W.C. to 1.7" W.C.
(2 mm W.C. to 43 mm W.C.)
GREY Spring Adjustable from 0.1" W.C. to 10" W.C.
(3 mm W.C. to 102 mm W.C.)
PURPLE Adjustable from 0.1" W.C. to 10" W.C.
Spring (3 mm W.C. to 250 mm W.C.)
RED Spring Adjustable from 0.1" W.C. to 24" W.C.
(3 mm W.C. to 600 mm W.C.)
ORANGE Adjustable from 5" W.C. to 35" W.C.
Spring (125 mm W.C. to 875 mm W.C.)
Maximum Operating Pressure: 24" Water Column
Maximum Pressure Surge: 3 PSIG
Maximum Ambient Operating Temperature
+140° F (+60° C)
Minimum Ambient Operating Temperature
-20°F (-93° C)
All settings are made with the switch in horizontal
position, using vacuum unless otherwise specified.
Factory setting, unless otherwise specified, is with
grey spring to .1" W.C.
To readjust, remove the hexagon cap screw at top of
indicator stem (Figure 6). Using a screwdriver, turn
the adjusting screw DOWN (clockwise) to increase
pressure or UP (counterclockwise) to decrease pres-
sure. The top of the adjustment screw is the indicator.
Slight variations in spring tension characteristics make
the range setting and marking nominal. If more accu-
rate setting is required, a “U” tube or inclined
manometer should be used.
Limitation of Liability. If it is understood and agreed that seller’s liability whether in contract, in tort, under any warranty, in
negligence or otherwise, shall not exceed the return of the amount of the purchase price paid by purchaser and under no cir-
cumstances shall seller be liable for special, indirect or consequential damages. The price stated for the equipment is a con-
sideration in limiting seller’s liability. No action, regardless of form, arising out of the transactions may be brought by purchaser
more than one year after the cause of action has accrued.
DIVISION OF A.J. ANTUNES & CO.
180 KEHOE BLVD. • CAROL STREAM, IL 60188 USA • 1-800-253-2991
www.antunescontrols.com
TEMPERATURE CONTROLLERS • TEMPERATURE DISPLAYS • AIR PRESSURE SWITCHES • GAS SWITCHES • CUSTOM ELECTRONIC CONTROLS
MODEL – JD-2
Air Flow Interlocking
Safety Switches
Figure 5
Figure 6
Range Scale Adjustment
and Indicator
ON-OFF Indicator
for Switch
Removable Screw Cap
Adjusting
Screw
Top of Screw
is Indicator
Range Scale
If adjusting screw is removed, apply a non-hardening
pipe compound to the threads before re-installing.
Snap-On Tool Co.’s “Never Seez” compound or equiv-
alent is recommended. Check for leaks with a soap
bubble test using maximum 1 PSI positive pressure. If
screw cap is removed to adjust setting, be sure to re-
install the cap to prevent tampering.
