Model 686CS Instruction Manual
D00312132
Revision F, October 2015
6
1
Introduction
The Fann Constant Speed Mixer, Model 686CS is designed to mix cements to
comply with American Petroleum Institute (API) specifications and recommended
practices.
As deeper wells are being drilled, heavier weight cements are needed to withstand
higher downhole pressures. The Model 686CS has a heavy-duty motor that can
handle thicker cements at the proper speed.
The mixer has control buttons that the
operator can use to program the proper mixing speeds and times. One control
button, the API Profile button is preprogrammed with the API standard settings,
12,000 rpm for 35 seconds. These programming features save the operator time.
For specification details, refer to the following API documents:
•
API Recommended Practice for Testing Well Cements, API RP 10B-2
•
API Specification for Cements and Materials for Well Cementing,
API Spec 10A