Operating instructions

INSTALLATION
3-6 01 Mar 12
ACD-1500Degasser
ELECTRIC POWER CONNECTIONS (CONT’D)
2. Install starter box, if required for the installation.
3. If degasser is equipped with a Derrick-supplied electrical control panel, pass three-phase
cable through conduit and into the control panel, and connect to terminal block or contactor.
4. Connect three-phase power leads inside the control panel (Figure 3-4), or as required for
customer-supplied starter box or other supply source.
5. Apply electric power to degasser, and turn on power to main motor (press START button on
Derrick control panel), and confirm that pump motor rotates in correct direction. Switch any
two power leads if rotation is reversed.
Note! If rotation is opposite, motor connections are reversed. Switch any two
leads to reverse direction.
Figure 3-4 Terminal Block Electrical Connections - Derrick Control Panel
IMPACT PLATE ADJUSTMENT
The impact plate is adjustable in 1/4” (6mm) increments within a range of 1/4” to 1-1/2” (6mm to
32mm). Generally, the gap should be set to accommodate the gas content of the drilling fluid. If
gas content is high, it may be desirable to maximize release of gas by narrowing the impact plate
gap. However, at the smallest opening, flow through the degasser will be approximately 500GPM;
at its largest gap, flow is about 1500GPM. The setting should be consistent with process
considerations and based on experience in operating the degasser.
To adjust the impact plate gap (Figure 3-5), proceed as follows:
1. Loosen bolts on both ends of the impact plate sufficiently to permit disengagement of the
impact plate and guide teeth.
2. Move impact plate upward to increase the gap or down to reduce the gap, being certain that
plate is parallel with top of riser.
3. When desired setting is achieved, engage teeth, and tighten bolts to secure impact plate in
position.