Specifications

OPERATING INSTRUCTIONS Document No. DER04097

Effective Date 27 Nov 07 Page 7 of 7

NORMAL SHUTDOWN

The normal shutdown procedure is to be used for controlled stopping of operation. Normal

shutdown is performed for routine activities such as cleaning, lubrication, inspection, or

adjustment.

WARNING! CENTRIFUGE MUST BE FLUSHED OUT THOROUGHLY AT THE

END OF THE DAY. UNLESS WASHED OUT, PROCESS MATERIAL WILL SAG

AND DRY OUT CAUSING SEVERE OUT OF BALANCE. WHEN RE-STARTED,

THE CENTRIFUGE WILL PRODUCE SEVERE VIBRATION, RESULTING IN

AUTOMATIC SHUTDOWN.

NORMAL SHUTDOWN PROCEDURE

Step Procedure

1 Press PUMP OFF pushbutton to discontinue feed to centrifuge.

If the shutdown will extend for several hours (such as at the end of the day), flush out

the centrifuge with clean liquid for 2 to 3 minutes. Unless flushed out, process material

will sag and dry out, causing a severe out-of-balance condition.

Press CENTRIFUGE OFF button to shut down electric power to centrifuge. Open fused

disconnect supplying electric power to the machine.

4 Lock out and tag out machine.

EMERGENCY SHUTDOWN

To immediately stop the centrifuge in case of emergency, open the fused disconnect supplying

electric power to the machine.

The content of this document is subject to change at any time. Information provided does not cover all details or variations possible

with DERRICK equipment; nor does it cover every contingency that may be met during installation, operation, maintenance, or

troubleshooting of the equipment. If additional information is required, or should situations arise that are not covered by this manual,

bring the matter to the attention of your local DERRICK representative or the Service Department at DERRICK Corporation in

Buffalo, New York.