Safety Features; Door; Barrier Ring; Imbalance Detector - Beckman Coulter Optima L-XP Instructions For Use Manual

Description

Safety Features

To enable printing of run parameters, program settings, and/or simulations, a parallel port on the
back of the instrument control head allows connection to a printer. See
Requirements
Safety Features
The Optima L-XP ultracentrifuge has been designed and tested to operate safely indoors at altitudes
up to 2000 m (6562 ft).

Door

The high-strength structural steel chamber door has a solenoid interlock to prevent operator
contact with a spinning rotor. When the door is closed it locks automatically. It can be opened only
when the power is on and the rotor is at rest with the chamber at atmospheric pressure. If there is
a power failure, the door lock can be manually tripped for sample recovery (see
Troubleshooting).

Barrier Ring

A 41-mm (1.63-in.) steel alloy armor ring acts as the primary barrier, surrounded by a 13-mm
(0.5-in.) vacuum chamber to provide full protection for the operator.

Imbalance Detector

An imbalance detector monitors the rotor during the run, causing automatic shutdown if rotor
loads are severely out of balance. At low speeds, an incorrectly loaded rotor can cause an imbalance.

Overspeed System

The overspeed system is a safety feature designed to ensure that the rotor does not exceed its
maximum allowable speed. This system includes a photoelectric device in the rotor chamber next
to the drive spindle and an overspeed disk on the bottom of the rotor. Individual rotor manuals
provide information on the correct overspeed disks to be used with each rotor.
The overspeed disk has alternating light and dark sectors. As the rotor spins, the passage of
reflecting and nonreflecting sectors over the photoelectric device generates a series of pulses that
are detected by the electronic circuitry and software.
After the rotor reaches 1000 RPM, the set speed is checked against the overspeed disk. If the set
speed is greater than the maximum speed permitted by the disk, the speed setting is automatically
lowered to the disk's maximum speed, but the run continues without interruption. An error
message is displayed to alert you to the change.
1-2
for printer availability and hookup procedures.
APPENDIX A, Preinstallation
CHAPTER 5,
PN LXP-IM-7AB