16H Manual Page 5
Revised: 11/2015
1.1 LOCATION
1 . 2 Operating Conditions
This precision optical instrument is designed to work in a normal workshop
environment but it is important to locate the unit as far as possible from
sources of grinding grit, oil mist, and vibrations. Where possible locate the
projector with the screen facing away from direct sunlight and overhead
lighting that could interfere with the screen image.
This unit should be placed on a strong sturdy bench capable of
securely supporting a minimum of 550lbs/250Kg. with a point pressure
capability minimum of 165psi. Dorsey Metrology International optionally
supplies a cabinet/stand designed for this application. Contact Dorsey
Metrology International or your local sales representative for information
1 . 3 Electrical Supply Information
The standard Benchmark 16H is supplied to accept 110-120VAC, 50-60 Hz
main power. It may also be configured to accept either 220-240VAC, 50-
60HZ. Unless clearly labeled (next to the power input plug) this unit is
configured for 110-120VAC,50-60Hz. Listed below are wire color codes
110-120 VAC system
Brown/Black
Hot
Blue/White
Neutral
Green
Ground
220-240 VAC system
Brown/Black
Hot 1
Blue/White
Hot 2
Green
Ground
Note this unit must be plugged into an outlet rated at a minimum of 10 A
and must not be operated without an adequate ground connection.
.