©2014 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specifications subject to change without notice
Thermaco, Inc. • 646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone (336) 629-4651
MNL-ISCU40000 4
40000 Series
Big Dipper
®
Internal Strainer (IS)
System Maintenance
*CAUTION! DISCONNECT POWER TO UNIT BEFORE CLEANING
to prevent damage to the unit and personal injury
*NOTE: Before energizing unit after cleaning, fill tank with water
to protect wipers and heater from damage
Big Dipper
®
Internal Strainer (IS) System Maintenance
Daily Maintenance:
(A) Empty the clear plastic grease/oils collection container (located beside the unit) prior to its be-
coming full once each day. The Big Dipper recovers grease and oil virtually water-free so that they
can be recycled. The collector container should be washed periodically so as to maintain the easy
viewing translucent characteristic of the collector.
(B) The internal strainer basket should be removed and emptied into a garbage container by shaking
briskly. Wash the inside and outside surfaces of the strainer after emptying.
Weekly Maintenance:
(A) Check the collection trough and the wiper blades for any solids build-up. Wipe off any accumulated
deposits and assure that the wiper blades are clipped in place properly.
(B) Press the Start button (on the bottom of the user interface) momentarily to ensure that the motor
and skimming wheel are still operating correctly.
(C) Check the thickness of the grease layer at the top of the unit. There should be no appreciable
amount of grease or oil left in the tank immediately after the daily automatic skimming cycle. If there
is more than a 1/2” (13 mm) thick layer of grease after the skimming cycle, this indicates a need to
increase the skimming time. Increase the digital control settings accordingly until a clean unit ap-
pearance is obtained after the automatic skimming cycle. A simple guide is to change to the next
higher setting (Light [I] to Moderate [II] or Moderate [II] to Heavy [III]) and run for a period of time until
enough grease is being skimmed from the tank.
Quarterly Maintenance:
(A) The internal strainer basket in the unit is designed to remove incidental solids from kitchen drain
flows. Over a period of time, sediment consisting of very fine particles may begin to accumulate on the
bottom of the unit. If this build-up is allowed to continue, it may eventually block the outlet baffle. To
prevent this from occurring, remove the lid and stir the bottom of the unit with a long handled spatula
while water is flowing to flush out the sediment. Occasionally drain and clean the unit thoroughly.
Properly used, a wet-vac may be appropriate for this purpose.
