Table 4-1. Command Shaft Rotation Specifications - Emerson VILTER VSG Installation, Operation And Service Manual

Section 4 • Operation
Command Shaft Rotation
Compressor
Capacity
Model
INC
VSSG 291
VSSG 341
CW
VSSG 451
VSSG 601
VSG 301
VSG361 CW
VSG 401
VSG 501
VSG 601 CCW
VSG 701
VSG 751
CCW
VSG 901
VSG 791
VSG 891
VSG 1051 CCW
VSG 1201
VSG 1301
VSG 1551
VSG 1851 CCW
VSG 2101
VSG 2401
VSG 2601
CCW
VSG 2801
VSG 3001
*The large gear on the command shaft has 50 teeth. The teeth are counted when moving the command shaft from
the minimum stop position to the maximum stop position.
The manual operating shaft on the gear motor should be turned the opposite direction of the desired command
shaft rotation.
The capacity and volume control motors are equipped with a brake, if it is necessary to operate the control motors
manually, the brake must be disengaged. The brake can be disengaged by pushing on the motor shaft on the cone
end. The shaft should be centered in its travel. Do not use excessive force manually operating the motor or damage
may result.
4 – 10
VSG & VSSG Single Screw Compressor • Installation, Operation and Service Manual • Emerson • 35391SB

Table 4-1. Command Shaft Rotation Specifications*

Volume
DEC INC DEC
CCW CW CCW
CCW CW CCW
CW CCW CW
CW CCW CW
CW CCW CW
CW CCW CW
CW CCW CW
No. of Turns/Rotation
Capacity
Turns Degrees Travel
0.91 328 3.568"
0.80 288 3.141"
0.91 328 3.568"
1.09 392 4.283"
1.22 439 4.777"
1.48 533 5.823"
1.80 648 7.072"
Angle/Slide Travel
Volume
Turns Degrees Travel
0.52 187 2.045"
0.45 162 1.767"
0.52 187 2.045"
0.63 227 2.473"
0.74 266 2.889"
0.87 313 3.433"
1.36 490 5.341"