©2001 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-AST 6
®
AST
Troubleshooting Guide
SOLUTION
Unit overflows
(
1) If the installation is new, check to ensure that the outlet pipe is
not reduced to a smaller size, that the outlet piping is vented and
is straight (with as few 90 degree turns as possible) and that no "P"
trap is installed on the outlet. Re-plumb the piping, if necessary.
Be sure that the outlet pipe is not clogged. Have a plumber clean
the line, if necessary.
(2) Check the Solids Removal Chamber for excessive solids build-
up. Make sure unit is receiving power. Be sure to check the filter
baskets for solids build-up (refer to maintenance procedures).
(3) Use jam wrench to manually turn macerating pump (see
page 8).
(4) Check the bottom of the unit for excessive solids and silt build-
up which may be blocking the outlet baffle. Disconnect the power
and use a long handled spatula or similar instrument to stir the
bottom until water flows through the unit. If necessary, drain and
clean the sediment from the unit. To prevent recurrence, schedule
this cleaning to be done on a regular basis. Use hot water to spray
the inside of the system for cleaning the walls of the tanks. Be sure
to fill tank with water before restarting the system.
Only perform
this process after the system has gone through its separating
cycle.
(5) Assure the flow rate to the unit does not exceed the maximum
flow rate, which is shown on the nameplate. If necessary, have a
plumber install an additional approved flow control at the sink
drain to restrict the inlet flow to the specified level.
OBSERVATION
(1) Assure grease/oil is being skimmed properly from the unit (see
the section in this Troubleshooting Guide entitled "No grease is
collected in the container").
(2) If excessive sediment has collected on the bottom of the unit,
clean the unit as described in item 3 above.
(3) Have a plumber check to make sure the unit is properly vented.
(4) Check timer settings to make sure it is set to turn the unit "on"
during a period of low or no flow.
Objectionable odor