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INSTALLATION, OPERATION &
MAINTENANCE DATA SHEET
G040 PUSHBUTTON RESET OPERATORS FOR
CLASS II, GROUPS E, F, & G, & CLASS III HAZARDOUS
LOCATIONS
G040 PUSHBUTTON RESET OPERATORS
CAUTION:
Before installing, make sure you are compliant with area classications, failure to do so may result in bodily injury,
death and property damage. Do not attempt installation until you are familiar with the following procedures. All
installation must comply with the applicable Electrical Code.
Make sure that the circuit is de-energized before starting installation or maintenance.
Verify that the installation is grounded. Failure to ground will create electrical shock hazards, which can cause
serious injury and or death.
Technical information, advice and recommendations contained in these documents is based upon information
that Killark believes to be reliable. All the information and advice contained in these documents is intended for
use only by persons having been trained and possessing the requisite skill and know-how and to be used by
such persons only at their own discretion and risk. The nature of these instructions is informative only and does
not cover all of the details, variations or combinations in which this equipment may be used, its storage, delivery,
installation, check out, safe operation and maintenance. Since conditions of use of the product are outside of the
care, custody and control of Killark, the purchaser should determine the suitability of the product for his intended
use, and assumes all risk and liability whatsoever in connection therewith.
3940 Dr. Martin Luther King Drive
St. Louis, MO 63113
P/N 00901216 FORM NO. K0304 R08/08 ECO-3-029-08 Page 1 of 3
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These pushbutton operators are designed for
enclosures which meet the requirements of Article 500
of the National Electrical Code. GO40 devices are to
be mounted in enclosures with walls up to ½” thick.
1. DIRECTIONS FOR INSTALLATION
Be sure to turn OFF the supplying circuit before
beginning installation
1. Using the installation drawings as a guide, drill
and tap a ¾” - 14 NPSM - 2A hole in the
enclosure cover. The hole must be located so
that a at area is available to tighten the locknut
on the inside of the cover and enough room
is allowed for mounting the nameplate on the
outside. For proper electrical clearance, these
devices should be mounted on 2 1/2” centers
and 1 3/4” from any vertical wall.
2. Remove the locknuts and spacer (if so equipped)
from the assembly, place the nameplate
in position on the cover and thread the
assembly into the cover tightening it against the
nameplate. If the optional trim locknut is used, it
must be threaded onto the body before installing
the body in the cover.
3. Tighten the assembly and secure it with the
locknut(s). (The assembly may be staked in
place, if desired).
4. Replace the spacer and/or reset plate (if so
equipped), close the cover and test the button
for operation.
NOTE: All installations must comply with
applicable local and/or National Electrical Code.
2. OPERATIONAL DATA
GO40 operators are designed to operate with
¾” maximum travel of the shaft. Various spacers
and extensions are available to facilitate proper
operation with most any type of equipment.
A protective boot is also available to cover the
pushbutton in wet areas.
3. MAINTENANCE DATA
“GO” Series Pushbutton Operators should be
periodically checked for damage and for proper
operation. The pushbutton shaft should be
lubricated occasionally to prevent binding.
Damaged or worn parts should be replaced
promptly to maintain safe operation. Refer to the
parts Drawing and to the Killark catalog for specic
replacement parts and part numbers.
3940 Dr. Martin Luther King Drive
St. Louis, MO 63113
P/N 00901216 FORM NO. K0304 R08/08 ECO-3-029-08 Page 2 of 3
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3940 Dr. Martin Luther King Drive
St. Louis, MO 63113
P/N 00911850 FORM NO. KO687 R01/06 ECO-8-021-04 Page 3 of 3
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