MACTRAP Grease Boss G25 216 Quick start guide

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Mactrap Grease Boss Operational Manual v Feb 2017
OPERATIONAL MANUAL
MACTRAP Grease Boss G25 Model -216
Automatic Grease Removal Unit (GRU)
The picture above shows the MACTRAP Grease Boss with optional pump out unit at outlet end
Units are right or left hand inlet flow to suit customer location. The above example is left to right flow
Supplied and serviced By: MACTRAP
For more information contact MACTRAP
Phone: [phone] / Mobile: [phone]
Email: [email protected] www.mactrap.co.nz
Manufactured by MACTRAP Katikati New Zealand

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Mactrap Grease Boss Operational Manual v Feb 2017
HOW IT WORKS
The Grease Boss can be installed internally and requires minimal operator maintenance inside the machine.
Wastewater enters the unit through a removable 2mm filter basket which captures food solids. This basket can be
removed from the front of the machine allowing minimum head room when installing.
Waste fats, oil and grease (FOG) can be collected in a disposable container (such as a plastic milk bottle) and put with
other rubbish collection, or into a washable collection container.
In the trap, FOG rises to the surface where it is attracted by a rotating double-sided collection tube. This FOG is
removed via a wiper blade into an external collection container. Tests show that over 98% of FOG is removed*. A
PLC controlled heater ensures that grease is kept at a temperature that will not solidify the oils. If no fat is used the
control does not switch the heater on as oils can normally be collected cold.
Water with the FOG removed exits from the unit into the waste water system.
WHERE CAN GREASE BOSS BE USED?
•Where there is no room for an external passive trap or as an alternative.
•Where under bench height space is tight as basket is front loading.
•Where there are self-cleaning ovens*
•Where there is a dishwasher*
DIMENSIONS
SPECIFICATIONS
Material 304 Stainless Steel FOG removal Rate <36kg/Hour
Max Inflow rate 2.5L /sec (see weir instruction page 5) Static capacity 100 Litres
Treatment capacity =<500l passive capacity Motor 230V 5RPM
Timer/Controller & Magnetic isolation switch Heating element Standard Smiths 2kW SIN 2
230v, 50Hz, Crouzet PLC
24-Hour Operation
Maximum operating temperature 65C

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Mactrap Grease Boss Operational Manual v Feb 2017
CORRECT INSTALLATION
Grease Boss can be installed wherever a 165mm clearance can be obtained
*IMPORTANT: The Grease Boss is not a sealed unit. Make sure a P trap or similar is used after outlet to ensure no
odour back flow from sewer
Ensure correct outlet pipe size to suit hydraulic flow entering the unit
•Use flexible couplings to inlet and outlet.
•Ensure 1:40 fall at all times.
•Do not use compression hose.
•Ensure unit filled with water prior to switching on power source.
•It is advisable to leave power on to retain integrity of default settings.
•Check correct invert and weir levels herein shown.
Note: Before switching on for the first time, lightly coat roller blades with vegetable oil (not petroleum based oil)
to prevent sticking to roller.
We recommend in-
sink filters for
efficient operation
Ensure U-bends are installed
at each sink or at least
pre Grease Removal Unit
Fall 2+ degrees
Minimum 165mm
clearance to lid lift required
Always fill with water
before turning on
Wire to an IP56 socket
(preferably under bench
Fit air
admittance
valve
Fall 2+
degrees
Outlet pipe minimum
diameter 50mm
Outlet/invert level must
be at base of socket
* P trap
recommended

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Mactrap Grease Boss Operational Manual v Feb 2017
DAILY MAINTENANCE
WARNING UNIT IS 240 V - Turn power supply off before removing wiper or roller
Filter basket and sludge drain
Open the filter door
Remove filter basket and empty solids to waste disposal
Secure door
Remove waste fat, oil and grease collection container (old milk bottles
are ideal to use) and put in refuse
Place new container in position
Lift the lid and check the blade for built up fat and grease
Carefully wipe excess build-up of fat, oil and grease off wiper and replace
in unit
Outer Wiper /Frame : To remove, hook the frame off the transverse conduit tube, wipe and replace. Clean the
wipers daily if the unit has high useage.
Inner wiper : This should be removed and cleaned as part of your periodic servicing.
•Note: Keeping solids especially coffee grinds, onion peel, bones, utensils and plastics out is important to
ensure efficient operation of the extraction process.
•If operating with large amounts of cream or homogenised milk, build up will slowly occur, so drain tank
occasionally with tap and wash units inside walls.
•To assist and limit problems of internal solids build up, practice wiping as much dairy waste to rubbish prior
to pre wash rinsing.
•As well as the MACTRAP filter we recommend permanent sink solids filters be used as well.

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Mactrap Grease Boss Operational Manual v Feb 2017
Adjusting the outlet weir to suit inlet flow rate
Factors affecting the efficiency of the MACTRAP Grease Removal Units
*Caution: The passing of dishwasher waste and self-cleaning oven waste through the MACTRAP Grease Boss
may affect the efficiency of the oleophyllic attraction of fats and oils in the Grease Boss. High use of certain
emulsified oils and homogenised dairy milks may also affect efficiency.
This type of FOG waste may not be collected as effectively as free flowing fats and oils which can result in
effluent readings carried out by some testing laboratories, showing higher Mg/litre fats and oils readings than
specified.
This problem occurs with all grease trap systems including passive traps. We recommend customers carefully
check the allowable fats and oil effluent permitted in their specific local authority consent. Customers should
include simple management processes to reduce the amount of emulsified oils and milk products entering the
grease removal system to a minimum.
Inflow/outflow
Weir height
Outlet pipe size
Inlet invert
Outlet invert
Up to 1.8Litre/sec
30mm
50mm minimum
315mm
265mm
1.81 to 2.5/sec
20mm
100mm minimum
315mm
245mm

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Mactrap Grease Boss Operational Manual v Feb 2017
Warranty: A 12 month warranty applies to parts and materials for this MACTRAP GRU. This warranty does
not include any labour, cleaning out or maintenance. If the MACTRAP GRU is not installed and operated as per
these operation guidelines, the warranty will be void.
GETTING STARTED
Step 1 Check the unit is plumbed in correctly (and that all parts can be accessed)
Step 2 Fill unit with water
Step 3 Connect to electric supply (via a 30 ma residual current device)
Step 4 Switch power on at mains (the orange light will indicate that power is on).
The unit will be programmed so there is no need to set the timer and
cycle programmes. The red light should be flashing. This means the unit
is working.
Step 5 Carry out all housekeeping requirements outlined in this manual
Always turn off power prior to removing wiper or roller units, and if opening electrical cover
ATTENTION
-NEVER TURN ON WHEN EMPTY. THE HEATING ELEMENT MAY OVERHEAT
-UNIT REQUIRES DAILY HOUSEKEEPING BY REMOVING FOG
-DO NOT LET FAT OR SOLIDS BUILD UP ON HEATING ELEMENT
-SERVICE CONTRACTS BY APPROVED ENGINEER ARE AVAILABLE AND RECOMMENDED
-UNIT WILL LOSE EFFICIENCY IF NOT MAINTAINED AS SOLIDS WILL BUILD UP INSIDE
-THE GREASEBOSS IS DESIGNED TO TRAP AND REMOVE FREE FLOATING GREASE OILS AND FATS.
-THE SOLIDS BASKET PROVIDED PROTECTS THE UNIT FROM SOLID FOOD WASTE BUILD UP. TO HELP ENSURE THE
HIGHEST EFFICIENCY, REDUCE SOLID FOODWASTE BY INSTALLING PRIMARY SINK STRAINERS OR BY SCRAPING WASTE
INTO BINS.
-CONSULT YOUR SUPPLIER IN THE EVENT OF INCREASED LOADINGS TO THE GREASEBOSS
- DO NOT USE HARMFUL DETERGENTS TO CLEAN GREASEBOSS
Due to the many possible factors affecting hardness of water used by customers and regional differences of water
hardness, Mactrap and their supplier of the heating element cannot guarantee the lifetime of any element and
elements are therefore not included in our warranty statement.

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Mactrap Grease Boss Operational Manual v Feb 2017
TROUBLE SHOOTING
PROBLEM
CAUSE & SOLUTION
Not extracting oil
Red light is on
(continuously without
blinking)
IS THE POWER ON?
Check to be sure the power is on and the time control is set correctly. Check
mains connection. If power is being supplied and there is still no display check
fuses or contact your supplier.
Check the magnetic switch and wiper are in position
If the lid has been removed for any reason, press the red button to reset
the machine. The light will change from continuous to blinking mode
ARE REMOVABLE PARTS CLEANED?
Remove the lid and clean away any build-up that may be present in
the wiper blades, collection chute or outlet tray. Assure that the wiper
blades are located properly in place with the wiper blades contacting the
roller. Replace wiper blades when worn. The trap contains 240V moving
parts - turn off power before removing wipers or roller
CHECK THE SKIMMING AND HEATING CYCLES ARE WORKING
The GREASEBOSS heating and extraction cycles should be set to remove grease
that is trapped. Make sure the cycles have been correctly set as per
instructions. The default time is 2am-4am (NZ time)
(Heater cycle) The tank should heat (15mins approx.) prior to default start time.
If the tank does not heat, the heater may need inspecting. Contact your local
Service engineer to check. IF water temp<42C during day unit will turn on/off
regularly in 5minute intervals
(Roller) After heating up, (15 or 30 minutes) make sure that the noise of the
roller turning is heard. If the motor can be heard but the wheels are not
turning then check the axles and drive couplings that link the motor to the
roller. If the roller motor does not display “ON”, the motor must be checked
by MACTRAP for possible replacement.
MAKE SURE WIPER BLADE ASSEMBLY IS SECURE
Position wiper blade assembly over the oil chute guide and secure to locator
plate. Check wiper blades condition as some acids and cleaning liquids may
cause deterioration over time and therefor new blade may be required.
CHECK THE THERMOSTAT IS FUNCTIONING
Check that the heating is commencing as per default.
If not a qualified engineer/electrician should check that the thermostat is set at
55 °C. Maximum with shut down at 85°C.
If water influent is to hot >65C collection efficiency will be affected.

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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 of “siphoning”.
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

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Mactrap Grease Boss Operational Manual v Feb 2017
To avoid blockages and odour in the MACTRAP Grease Removal Unit and filter basket -
follow these daily maintenance steps. Turn off power before removing and reinstalling wiper unit
or roller
For more information see our maintenance video on www.mactrap.co.nz (in the section Underbench
Grease Removal Units)
Open the filter door
Remove filter basket and empty solids to waste
disposal.
Clean the basket, replace in position
Secure the door
Remove waste fat, oil and grease collection
container (old milk bottles are ideal to use) and
put in refuse.
Place new container in position
Lift the lid and check the blade for built up fat
and grease.
Important: When replacing the lid make sure
the tab on the lid is over the sensor. The
machine will not work if the tab and sensor are
not touching.
After replacing the lid, press the red button once
to reset the machine. Once reset, the light will
change from continuous red to blinking red. The
blinking light means the machine is working.
Carefully wipe excess build-up of fat, oil and
grease off wiper and replace in unit.
Note: do not clean roller with detergent as this
will affect the operation of the grease trap.