8
Mactrap Grease Boss Operational Manual v Feb 2017
PROBLEM
CAUSE & SOLUTION
Excessive water is
observed in the
grease collection
container
Cycle Settings
Check the timer cycle settings are not set for too long a period. The unit should
not run extensively after the grease and oils have been extracted. (2 hours max
operation)
Check water flow
Make sure that the water flow to the unit does not exceed the rated flow and
that there are no drain line blockages downstream from the unit.
Low level of oil waste
If only a relatively small amount of oil is present in the wastewater, the
amount of water that is collected in the oil bin can be more than that of the
oil. Adjust the cycle timing so as to reduce the cycle duration.
Check blades are in contact with roller
Water overflows
from the unit
Has the strainer basket been maintained?
If water overflows from the inlet chamber the basket may need emptying.
Remove, clean and re-install.
Does the inlet gasket need replacing?
General overflowing can also result from a worn inlet gasket or a
blocked outlet pipe. Replace gasket and clean all possible blockages
downstream of the unit.
Has sediment been allowed to build up over time?
Over time, depending on operators control sludge could build up at the bottom
of the unit and block the path of the flow underneath the outlet baffle. Clean
as per maintenance instructions. Build up may severely reduce efficiency of unit
and lead to overflow.
Odour
Reported
Has maintenance been carried out?
Ensure all recommended maintenance is carried out.
Check backflow prevention from sewer line and vent the outlet.
Check for scum adhesion especially sour milk froth around the liquid surface
level, skim off occasionally or use sink shower to rinse inside with warm water.
Flush occasionally with clear hot water
Excessive steam
comes out of the
unit
Siphoning
This results in a reduced level in the unit caused by the effect o
f “s
iphoning
”.
This occurs in particular installations where the downstream piping of the
unit is not properly installed. If this occurs, turn off the unit immediately and
consult the plumber or the distributor for more advice.
Check the water level
Do not run dry or empty without refilling with water
