Susteco Big Hanna T120, Operation Manual, Page: 73 / 113

6 TROUBLESHOOTING THE BIOLOGICAL PROCESS
6.1 SCHEDULE - BIOLOGICAL PROCESS
NOTE – THIS IS ONLY ABOUT THE HOT ZONE!!! See below for more details about each problem. To
understand low / medium / high moisture – read 4.4 Moisture control.
LOW
M
OI
ST
U
RE
(L
ES
S T
H
A
N
35
%
-
PR
OCE
SS
IS
S
TOPPE
D
)
LOW TEMPERATURE
LESS THAN 50
O C
NORMAL TEMPERATURE
50-65
O C
HIGH TEMPERATURE
MORE THAN 65
O C
Either caused by too much sawdust
and no biological process. Compost
material is not decomposed.
 CAREFULLY ADD WATER
 INCREASE WAIT TIME
 LOWER NUMBER OF
ROTATIONS
If temperatures have increased
looking back one week:
 ADD MORE WATERY WASTE
 ADD LUKE WARM WATER
 LOWER FAN-SPEED
 LOWER SAWDUST AMOUNT
 INCREASE FAN SPEED
 INCREASE NUMBER OF
ROTATIONS
 LOWER WAIT TIME Or caused by fully decomposed
burnt out material – no energy.
 ADD NEW MATERIAL
 LOWER FAN-SPEED
If the temperatures have dropped
looking back one week:
 ADD LUKE WARM WATER
 INCREASE WAITING TIME
 LOWER NUMBER OF
ROTATIONS
M
ED
IU
M
M
O
IS
TU
RE
(40
-70%
)
Could be caused by too much
material.

LOWER INPUT OF FOOD
WASTE TEMPORARILY.
MEDIUM MOISTURE (40-70%)
AND NORMAL
TEMPERATURE
50-65
O C = GOOD
BIOLOGICAL PROCESS
IN THE HOT ZONE
POSITIONED IN THE FIRST HALF OF
THE CYLINDER
 CHECK AIRFLOW AND IF
THIS IS O.K.
 LOWER WAITING TIME
 INCREASE NUMBER OF
ROTATIONS
Caused by incorrect C/N quota.
 ADD MORE SAWDUST WITH
FOOD WASTE
H
IG
H
M
O
IS
TU
RE
(M
O
RE
T
H
A
N
7
0%
)
Water is stopping the biological
process.
 STOP FEEDING FOOD
WASTE
 ADD SAWDUST IN THE INSP.
DOORS
 LOWER WAIT TIME
 INCREASE NUMBER OF
ROTATIONS
Risk for leakage from the machine.
 ADD MORE SAWDUST
 LOWER WAITING TIME
 INCREASE NUMBER OF
ROTATIONS
 INCREASE FAN-SPEED
 LOWER WAITING TIME
 INCREASE NUMBER OF
ROTATIONS
 CAREFULLY ADD MORE
SAWDUST
 INCREASE FAN-SPEED
Position caused by Lacto acid
Bacteria, foul smell and yellowish
colour.
 ADD SAWDUST IN
INSPECTION DOORS
 WAITING TIME 8 HR