MODEL 755VES Model 755VES Operator’s Manual Laboratory Centrifuge Providing Quality Centrifuges since 1932 P/N 7711010 Rev.
Table of Contents Providing Quality Centrifuges since 1932 Model Description ................................................................... 3 Supplied Equipment ................................................................ 3 Warranty Information .............................................................. 3 Specifications .......................................................................... 4 Control Panel / Parts of the Centrifuge ................................. 5 Setup Location .........
WARNING For the safety of both the operator and service personnel, care should be taken when using this centrifuge if handling substances that are known to be toxic, radioactive or contaminated with pathogenic microorganisms. When Risk Group II materials are used (as identified in the World Health Organization “Laboratory Bio-Safety Manual”), a Bio-Seal should be employed. In the event that materials of a higher risk group are being used, more than one level of protection must be provided.
Specifications General Specifications for the Horizon Model 755VES Centrifuge Overall Dimensions (H x W x D): ................ 10.5˝ x 14.5˝ x 17˝ Centrifuge Motor: ....................................... 1/2 H.P. Brushless DC Protection Breaker: .................................... 4 Amp. re–settable Timer: ........................................................... Electronic, with hold or 0 to 99 minutes, +/- 1% Weight: ......................................................... 39 lbs.
Control Panel / Parts of the Centrifuge Lid Lid Knob Lid Safety Interlock System Control Panel (see below) Cycle Counter Power Button Cabinet Up/Down RPM Change Buttons Running Indicator Light Latched Unlocked Indicator Indicator Light Light RPM Display Start Button Open / Stop Button RCF Conversion Button Time Display Up/Down Time Brake Change Buttons Display Program Button Memory Preset Display Memory Button 05
Setup Location 1. Unpack the centrifuge and verify that all of the supplied equipment is present. 2. Choose a setup location which meets the following criteria: a) A bench top clearance height of 20” is required in order to open the lid. b) The clearance envelope is the space around the centrifuge which is required for safety. Choose a setup location which will allow for a clearance envelope of at least 30” x 30”, (with the centrifuge at the center).
Initial Setup Procedure (continued) 10. The ‘RUNNING’ indicator light will illuminate. 11. The test tube carriers will slide up into the horizontal position (horizontal rotor only) and the unit will accelerate to the current set speed. 12. Listen to the sound of the centrifuge. A smooth whirring sound should be heard. If there are any loud or unusual sounds, stop the centrifuge by pressing the ’OPEN / STOP’ button immediately and refer to the section on troubleshooting. 13.
Tube Holder Configurations The next two pages will describe proper balancing and tube loading. Use the appropriate section for the rotor installed in your centrifuge. Improper loading can result in damage to the centrifuge or test tube samples. Six (6) Carrier Horizontal Rotor (standard) This rotor is designed to hold up to 6 tube carriers. There are two carriers available: the 4-position test tube carrier and the 50 mL carrier. Follow the procedure below for proper tube loading.
Six (6) Place 50 mL Fixed-angle Rotor (optional) This rotor is designed to hold up to six (6) 50 mL tube holders. Your centrifuge must contain a balanced load in order to work properly. To ensure that the load is balanced, keep these rules in mind when inserting test tube samples into the 6 place, 50 mL fixed-angle rotor: 1. Opposing tube holders must be identical. 2. Opposing tube holders must be empty or loaded equally weighted samples. 3.
Control Panel Functions Time Adjustment and Timer Operation: The run time may be set from 30 seconds to 99 minutes and 30 seconds. Press the up and down arrow buttons next to the time display to adjust the run time. Adjustments may be made prior to a run or after a run begins. A quick tap will adjust the time by 30 seconds. Hold down the button for 1 minute adjustments - continue to hold for 5 minute adjustments. Press the down button once while 00:30 is displayed to access the “hold” feature.
Advanced User Settings (continued) Braking Rate: The user may adjust the braking rate from minimum (slowest deceleration, 0) to maximum (quickest deceleration, 9) using the following procedure: 1. While the centrifuge is idle, press the PROGRAM button. 2. Use the UP/DOWN arrow buttons next to the speed display until “BRAKE” is displayed in the speed display. 3. The current braking rate is displayed in the brake display.
Memory Locations / Storing and Recalling The Performance Series centrifuges are capable of storing up to 10 user-defined presets. These memory presets contain all of the settings needed to define a specific run, (run time, speed, acceleration rate, braking rate, etc.). The user can use these memory locations to quickly configure the centrifuge for a specific test type and ensure that the test is run in the same way each time by recalling this same setting. Store a configuration in a memory location 1.
Care and Preventative Maintenance With proper care and maintenance your Horizon centrifuge will provide years of laboratory service. For proper care, the following steps should be taken: 1. Provide Adequate Ventilation: For cooling purposes, the Horizon draws in ambient air through the air intake cover on the top of the lid and exhausts this air in the rear of the base. The centrifuge should be placed on a hard smooth surface for good air circulation. 2.
Troubleshooting: 1. Problem: The rotor does not spin freely. Solutions: • Make sure that nothing has fallen into the rotor chamber. • If there is nothing obstructing the rotor, the motor may be damaged. Contact your authorized dealer or The Drucker Company for further assistance. 2. Problem: There is excessive noise when the machine is running. Solutions: • Check to see that the load is balanced. • Make sure that nothing has fallen into the rotor chamber.
The Horizon model 755 complies with all requirements of UL’s Electrical Equipment for Measurement, Control, and Laboratory Use; Part 1: General Requirements, UL 61010-1, Issued: 7/12/2004, Ed: 2nd, Rev: 10/28/08; Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use Part 1: General Requirements, CSA/C22.2 #61010-1, Issued: 7/12/2004, Ed: 2nd Safety: Horizon Lid Safety Switch: The Horizon lid is secured to the top of the cabinet by a latching knob and pawl system.
Replacement Parts: Part No. Description 7728052 ................. Foot, rubber 7751068 ................. Lid Tray Micro-Switch 7723002 ................. Lid Tray Solenoid 7735016 ................. Motor, 1/2 H.P. Brushless DC 7717041 ................. PC Control Board 3056001 ................. Step Down Transformer 7751043 ................. Circuit Breaker 7724149 ................. Front Panel Label 7760003 ................. Line cord 7714101 ................. Pawl, latch, lid 7714103 .................
