Grease Guardian X Series Owner's manual

1
Automatic Grease
Removal Unit
INSTALLATION
OPERATION
MAINTENANCE
EDITION: JAN 2019
CONTROLLER PROGRAM: DX2
GGX7S/230VAC, GGX7C/230VAC,
GGX15/230VAC, GGX15C/230VAC,
GGX25/230VAC, GGX35/230VAC
GGX7C/110VAC, GGX15/110VAC,
GGX15C/110VAC, GGX20/110VAC,
GGX25/110VAC, GGX35/110VAC

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ASME A112.14.3
ASME A112.14.4
IRELAND & UK
Grease Guardian, Greenbank Ind Estate
Newry BT34 2QX
Northern Ireland, UK.
Call: [phone]
E: [email protected]
USA Office
Grease Guardian, 127 Cliffside Drive, Yonkers, NY
10710, U.S.A
Call: 1800 550 3134
Office: 914 375 0902
Cell: 914 316 5671
E: [email protected]
Malta Office
FM Environmental (Malta) Ltd, Water Technology House,
A15B Industrial Estate, Marsa, Malta
Call: [phone]
E: [email protected]
Useful Videos Link

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Contents
Product Overview 4
Dimensions & Specifications 5-6
Plumbing and Mechanical Installation 7-10
Electrical Installation 11
Starting Up /Safe Operation 11-12
Controller Settings 13-16
Daily Maintenance 17 -18
Quarterly Clean out 18
Troubleshooting 19-21
Parts Explosions 22-23
Wiring Diagram 230VAC 24
Wiring Diagram 110VAC 25
Warranty Terms 26-28

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The FM Environmental Grease Guardian X series automatic grease removal unit (GRU) is a
totally engineered system for separating free floating grease and oils from drain water flows.
The separated grease and oils are trapped within the stainless steel tank and are automati-
cally recovered by the system. Only the “cleaned” water is allowed to pass through the sys-
tem into the drain lines. Each unit also separates solid food waste into a removable
basket. The Grease Guardian can be used in a wide variety of applications from restaurants
and food processing operations to many types of industrial operations.
Use of the Grease Guardian assures that costly sewer surcharges and fines are minimised or
eliminated through efficient separation and removal of the grease and oil. In addition, rapidly
escalating pumping and disposal costs, which are associated with conventional grease traps
or interceptors are also reduced or eliminated. The recovered grease and oils are virtually
water free so they can be collected by a local rendering company or recycler
Grease Guardian X Series
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Grease, solids and wastewater from the kitchen enters the Grease Guardian.
Solid food waste is caught in a removable cylindrical strainer.
A skimming cycle is set. The grease passes into the middle chamber through slots in
the baffle wall where it remains trapped. With the assistance of a heater the grease
rises to the surface forming a separated layer.
The liquefied grease adheres to the rotating skimming drum.
The grease passes down a scraper blade into a collection container where it can be
removed and disposed hygienically.
The treated water exits under a baffle wall and through the outlet to drain.
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How It Works (rear view cutaway)
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HEATER

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Product Dimensions and Specification 230VAC
FRONT VIEW
MODEL ABCDEFGH
X7S 662 443 444 48 516 405 321 251
X7C 662 443 390 48 539 405 221 151
X15/15C 842 623 346 60 557 405 215 87
X25 870 657 423 60 570 405 298 170
X35 1092 873 422 89 577 405 281 170
MODEL X7S X7C X15/15C X25 X35
Hydraulic Flow l/second 0.5 0.5 11.58 2.21
Skim Rate l/hr 55555
Strainer Basket vol, kg 2.99 2.99 2.99 2.99 2.99
Grease Collector vol, litres 77777
Motor
(all models) 25 Watt, 230VAC, 50Hz,
Heater X7-X15: 600W/230VAC, with Thermal cut-out
X25-X35: 1000W/230VAC, with Thermal cut-out
Time Control
(all models) Logic Controller:, Backlit display
Inputs 230 VAC, Outputs 230 VAC
Battery back up
TOP VIEW
SIDE VIEW INLET END
STRAINER BASKET
REMOVAL CLEARANCE
INLET
INVERT
OUTLET
INVERT
Dimensions in mm.
Process Features
Main Electrical Features
G & H are heights to pipe base

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Product Dimensions and Specification 110 VAC
FRONT VIEW
MODEL ABCDEFGH
X7C 26 17.5 15.25 221 16 9.75 7
X15/15C 33 24.5 13.5 221.75 16 9.5 4.5
X20 34.5 25.75 15 221.25 16 11 6
X25 34.25 25.75 16.5 222.5 16 13 7.75
X35 43 34.25 16.5 322.5 16 12.75 8.5
MODEL X7C X15/15C X20 X25 X35
Hydraulic Flow USG/min 715 20 25 35
Skim Rate USG/hr 1.3 1.3 1.3 1.3 1.3
Strainer Basket vol, lbs 6.6 6.6 6.6 6.6 6.6
Grease Collector vol, USG 1.85 1.85 1.85 1.85 1.85
Motor
(all models) 25 Watt, 110VAC, 60Hz,
Heater
(all models) 600W, 110VAC with Thermal cut-out
Time Control
(all models) Logic Controller:, Backlit display
Inputs 110 VAC, Outputs 110 VAC
Battery back up
TOP VIEW
SIDE VIEW INLET END
STRAINER BASKET
REMOVAL CLEARANCE
INLET
CENTER
OUTLET
CENTER
Dimensions in Inches.
Process Features
Main Electrical Features
G & H are heights to pipe centers

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Plumbing and Mechanical Installation
Inlet pipe-work. Install 2 inch (50mm) diametre wide pipes. Ensure a slight fall is provided in all
pipe-work entering unit. The Grease Guardian includes quick connect rubber couplings and blank-
ing caps. Note that the fixtures pipe can enter the Grease Guardian inlet from left or right. (above
rear view shows from right) If multiple pipes are being plumbed from opposite directions, under
normal plumbing codes these must all combine to enter via one pipe via one direction only and
should not be plumbed from both directions.
Ventilation Tee and branch pipe. (Recommended) to prevent odours escaping from the Grease
Guardian into kitchen area. Ventilation should be terminated at the building’s stack vent. If ventila-
tion is not provided at inlet, the pump/clean out frequency of the system may have to be increased
to reduce potential waste odours.
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Plumbing Sequence.
Check all required clearances in reference to the “Product Dimensions and
Specification” page in this manual.
EXAMPLE. UNDER SINK—REAR VIEW
Lifting/Handling:
This product is classed as a heavy item that should not be handled alone. There is a require-
ment for 2 people to manually lift all models described in this manual. Steel tipped toe capped
shoes and handling gloves should also be worn.
Install these product models only at ambient room temperature, either under or
adjacent to the fixtures being served. Do not repurpose the system or add to the num-
ber of fixtures specified for connection at time of sale.

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USA. Flow Control with Air Intake. For those installations requiring Plumbing Drainage
Institute of America compliance, a certified flow control (with air intake) must replace the inlet
ventilation Tee. The relevant control required from www.canplas.com is listed:
GGX7, part reference: Canplas 3922107A
GGX15, part reference: Canplas 3922115A
GGX20, part reference: Canplas 3922120A
GGX25, part reference: Canplas 3922125A
GGX35, part reference: Canplas 3933135A
(The air intake riser of the flow control is to be connected to the inlet side ventilation pipe as
described in point (2) )
Wastewater pipework. WARNING To avoid reduced flow or backflows issues, the site outlet
pipework must be connected as detailed below for all GGX systems.
- pipe diameter must be minimally of 2 inch diametre (50mm)
- pipe must be installed at a gravity fall of 1:10 minimally, but preferably 1:40.
- pipe must contain no more than 2 x 90 degree pipe bends between Grease Guardian outlet
and final waste point in floor.
Outlet vent pipe. Required to:
a/ prevent sewer back odours entering Grease Guardian
b/ to prevent any siphonage of the system under peak flows. The pipework should be termi-
nated at final stack vent.
Final vent stack to atmosphere. Failure to connect ventilation points of Grease Guardian to
the final stack can result in odour issues internally.
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PLUMBING EXAMPLE 2. REAR VIEW.
DEMONSTRATES FURTHER ROUTING OPTIONS FOR
INSTALLING GREASE GUARDIAN “X”
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Plumbing and Mechanical Installation

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1Solids Strainer basket. Ensure there is adequate clearance to access and re-
move the strainer as shown in the “Dimensions and specifications” page
Manual spray bar valve and hose assembly 230VAC models only.
Note that the manual spray bar system is supplied, unfitted, as a standard acces-
sory for models 230VAC models X15, X20, X25, X35; it can be fitted later to the
tank where scum dispersal is required AND where regulations permit fitting.
Worldwide regulations can vary:
The installation of mains water supplied spray bars may be subject to regulations on backflow
prevention measures. Please check your local code before installing either the manual or
automatic spray bar system. FM Environmental Ltd will not be held liable for interventions
made by local authorities where a spray bar system is installed.
Attaching the manual spray bar kit
The valve and valve bracket are to be mounted on the left side of GGX unit.
Remove the blanking bolt from the side of GGX tank in order to mount the valve
bracket supplied. The steel hose is then to be passed to the rear of GGX tank to
spray bar inlet. (Assembly Diagram on page 23)
Note: The manual spray bar is not supplied with 110VAC GGX models.
110VAC models are available with the automatic spray bar system only.
GREASE GUARDIAN “X” EXTERIOR FITTINGS
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Upgrade item
Upgrade item
Plumbing and Mechanical Installation

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Water supply for manual spray bar:
A wash-water supply is required for connection to the valve, rated: 1/2 inch BSP, 0.75 l/
sec (0.2 USG/sec) @ 3-6 bar. Temp 40-60 C (104 -140 F) Note that the same spray bar
is used also for automatic wash system.
Automatic wash valve assembly. (Assembly Diagram on page 23)
Attention! See point 2 above on local regulations that may apply before installation.
The automatic wash valve is supplied as standard on combi oven models X7C and
X15C (instead of the manual valve and hose assembly). For all other models: X15, X20,
X25, X35 this system is only available as an upgrade at time of order. Wash water
supply required:1/2 inch BSP, 0.75 l/ sec (0.2 USG/sec) @ 3-6 bar. Temp 40-60 C (104 -
140 F) The solenoid power cable is routed to Grease Guardian controller, and is pre-
fitted at factory.
Air blower Assembly. Non standard Item. Upgrade for models X15 to 35. Supplied
with a wall mount bracket. Blower must be wall mounted above lid level of Grease
Guardian unit. This system is supplied with air hose and push fit attachment for connec-
tion to air bar (item 8). The power cord plug must be plugged to a wall electrical outlet
separate to the Grease Guardian supply. Instructions for setting the blower timer are
provided separately with the upgrade kit.
Mains Power Cord for Grease Guardian system. Supplied with electrical plug attach-
ment. The cord is supplied already routed to Grease Guardian controller through the
rear of the machine. The Grease Guardian System should only be powered up after
filling tank with water ensuring water level reaches internal skimming drum.
Blower Air Bar. Supplied only if a blower system is included. Comprised of a two piece
“L “shaped steel bar. The lower section is submerged inside tank. This section is to be
screwed into the upper section which is mounted at side of tank and includes a push fit
connection for connection to air blower hose.
Spray bar for manual or automatic spraying system (See Note 2). The spraybar is
supplied with spray nozzles in place. Ensure the nozzles are directed diagonally down
towards the water surface below in an inverted “V” position
Grease Guardian oil container. Ensure there is adequate clearance to access and
remove the container as shown. Refer to specification sheet if required.
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Plumbing and Mechanical Installation

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1; Any engineer installing this product or its electrical supply circuit, must have the requisite
qualification to do so according to the country of installation regulatory requirements, and must
work to the appropriate Electrical codes of practice for that country. (ie, for the UK, the latest
edition of BS7671. For the Republic of Ireland, the latest edition of the ETCI regulations and
be Safe Electric approved. For all other countries the latest Electrical Regulations for that
country)
2; This product must have its own dedicated circuit. This product must not be wired into a
circuit supplying any other appliances. This circuit must have an overcurrent protection de-
vice in series with either a/ 30mA RCD (Residual-Current Device) or b/ a 30mA RCBO
(Residual-Current Circuit Breaker with Over Current Protection) or c/ for USA installations:
30mA ground fault circuit breaker interrupter (GFCI)) . All devices here listed a,b or c, must
be fitted with a TEST button and must be tested 4 times yearly to ensure the device
trips out under test conditions.
3; The circuit Fuse/MCB or RCBO is to be suitably rated/sized for the load current drawn by
the specific model being fitted in accordance with the model specification sheet.
4; A waterproof socket outlet must be provided next to the installation position by the installer,
suitable for the 3 pin cord-plug, or 2 pin Euro plug with earthing socket as pre-fitted by FM
Environmental. The waterproof socket must have a minimum Ingress Protection rating of
IPX5, to protect against possible water jets, spillages and moisture which occur in and around
this product’s normal location.
5; This product contains an immersed heater and must not be switched on at the socket until
the main tank is filled with water to a level whereby the water level settles just above the un-
derside of the internal skimming wheel/drum. Consult your market representative if in doubt.
Starting Up
Unless otherwise agreed, start up should normally be carried out by your market repre-
sentative as part of formal Product Support Visit.
1/ Check system waste water flow. With the main tank cover removed, fill and release all
sinks or other drainage appliance connected from full, into the GGX system. During release of
sinks observe that there are no level rises of more than 1 inch (25mm) inside the GGX tank.
Consult representative if in doubt. Also check for any pipe leaks during this process.
2/ Set the GGX controller for site conditions in accordance with timer setting instructions
detailed in this manual
3/ Instruct kitchen personnel on maintenance requirements as detailed in this manual.
4/ Log the installation date for tracking warranty terms.
IMPORTANT: Grease Guardian Electrical Installation
Electrical Installation

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BEST PRACTICES TO MAXIMISE PERFORMANCE (USER)
• Remove any blockages from drains before installing the Grease Guardian
• Unit will lose efficiency if not maintained daily as described
• Avoid connecting a dishwasher machine to the Grease Guardian in order to ensure tested
efficiencies. The dishwasher should be bypassed to drain. (Then in practice, scrape dish/plate
waste into bins before pre-rinsing these in the sinks served by the Grease Guardian. After
thorough pre-rinsing, the dish/plates can be machined washed)
• Never connect a macerator or similar food waste device upstream from the Grease
Guardian
• Do not use highly acidic or highly alkaline detergents in ovens connected to Grease
Guardian.
• Do not flush or clean the Grease Guardian tank with bleach or any aggressive cleaners
while the unit is in place. (The unit must be disconnected from the sinks before cleaning with
these detergents. All wetted components should be removed before doing so to avoid chemi-
cal corrosion. Rinse out the unit with clean water before refitting components and re-
installation.)
• The unit is designed to trap and remove free floating grease oils and fats only. The unit
will not remove emulsions such as salad cream, mayonnaise, relish, sauces, soup waste, or
any finer wastes or emulsions that pass into the main skimming chamber
• The internal solids strainer provides limited protection from solid food waste build up. To
help ensure the highest efficiency, solid food waste can be further reduced by installing addi-
tional strainers upstream of Grease Guardian.
IMPORTANT SAFETY POINTS TO OBSERVE IN USE (USER)
• Operation of the unit must be performed by trained personnel only.
• Unit requires daily housekeeping AND assisted servicing including pump out and heater
inspection every 3 months. Neglect of this maintenance can lead to malfunction of system
and compromise site safety.
• Unit requires ventilation. Ensure to follow all installation instructions previously described
for ventilation, especially in confined locations. Otherwise tank pump outs must increase
from once every 3 months to a minimum of every 1-3 months.
• Use dedicated rubber gloves for grease trap maintenance tasks to minimise cross con-
tamination
• Do not touch the skimming wheel, skimming drum directly if accessing inside the tank to
clean etc. Do not touch any submerged elements inside the tank.
• Other than accessing the front panel timer key buttons, never attempt to access inside the
control panel behind the timer plate, unless electrically qualified.
• If the mains supply cord is damaged it must be replaced to avoid a hazard, by the manu-
facturer or authorised distributor or service agent

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Grease Guardian Controller: Cycle Programming
- +
On powering up, the unit will automacally run a TEST sequence
of heater, motor and spray bar outputs. Aer the TEST completes
the HOME Screen will appear with these default elds:
a/ Time of Day on the top le.
b/the program name on the top right. In this case: “DX1”
c/ Next Cycle due, in the middle of the screen.
The TEST can be re-iniated at any me by pressing
together
The Main Tank lid requires replacement to resume normal system
operation
The "In cycle" message displays during a main cycle.
One of the 3 pre-selected skimming modes will display when the
unit is in a cycle.
Flashes when heater is active during a cycle
Flashes when motor is active during a cycle
“Cycle Finished” displays after cycle completes. At the same
time the maintenance reminder also flashes to remind the user to
check the wiper blade, strainer basket and oil container. These
messages cancel when the main lid is removed to do the mainte-
nance. Also self-cancels and resets after 10 minutes if lid is not
removed.
continued overleaf...
LID OFF!
Screen 1. Home. Additional Messages during general Use:
In cycle
Low skim
med skim
high skim
Cycle finished
heating
skimming
Check blade, basket
and oil bucket
Power UP, TEST, and Screen 1 (Home).
Intro. Note on adjusting Hr/Min/Sec values on PLC:
For PLC timer values that display a blinking icon, these can
be adjusted by using the following button sequence:
1/ Press “-” or “+” to move the bar from one value to the next.
2/ Press “OK” to lock onto value to be changed.
3/ Press “-” or “+” to adjust value up or down.
4/ Press “OK” again to store the change and return to the blinking bar.
&

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Grease Guardian Controller: Cycle Programming
PUMP OUT 00014 dys
Advanced notification will display for any weekday
which is set to OFF.
Displays during the inactive weekday, if a weekday is
set to OFF as described in the weekday display below.
This message will display in the Home screen when
the main tank pump out service due reaches 14 days
or less. If the unit is pumped out before the time out,
the countdown can be cleared and re-set to start again
by pressing the “-” button when inside screen 7 (see
time control pages). If a pump out is not completed by
zero days the countdown will clear and auto-reset.
Manual Forcing of Skimmer.
If activated, the skimmer will be forced on constant to
clear any surplus grease in the main tank. The tank lid
must be in place for the skimmer to operate. Pressing
"+" again in the Home Screen for 10 seconds will de-
activate the same function. The feature also self-
deactivates after 30 minutes of skimming to avoid over
-skimming.
Inactive today
unit off tomorrow
Skimming forced
+
Hold in Home Screen 10 seconds
Setting a Cycle. Cycle Options daily.
(Screen 2)
A
From Screen 1 
B
In Screen 2, one day is divided into 4 static
cycle start/finish time options. T1,T2,T3,T4. In
this menu set a T option by pressing and hold-
ing “B” for 1 second. The word “SET” will dis-
play against a time option. Repeated pressing
of “B” will advance through eleven ON/OFF
options as shown below.

Example above shows that option 1 from a list of 11 options has been set. This option is
also the default setting. In this instance the unit is programmed for one cycle daily, com-
mencing at 6am. Note that if option 11 is chosen there are no cycles set

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Grease Guardian Controller: Cycle Programming
Screen 3 optimises the cycle duration
Low Skim DEFAULT= 10 mins skimming/cycle
Medium Skim = 20 mins skimming/cycle
High Skim = 30 mins skimming/cycle
Select a mode by pressing
LOW SKIM: skims for 10 mins only. (1 skim)
MEDIUM SKIM : skims 10 minutes then pauses for 5 mins
before a further 10 minute skim repeat. (total 2 skims)
HIGH MODE: skims 10 minutes then pauses for 5 mins,
skims 10 minutes, pauses 5 then skims 10. (total 3 skims)
B

Setting a Cycle. Choose a Skim Mode. (Screen 3)
Setting a Cycle. Heater Setting. (Screen 4)
- + OK
B
The default setting inside screen 4 is:
Heater set to ON, with a preheat of 30 minutes.
The Heater can be switched off completely by tog-
gling “B”
When the heater is set to ON the full range for
preheat is 5-60 minutes which is adjustable
using the (see intro page on adjusting
timer values)
Setting a Cycle. Weekday Settings (Screen 5)
In screen 5 there are 12 programable states for set-
ting the daily cycles to ON /OFF for specific week
days.
Simply advance
through 12 options
by pressing:
B

A
ESC
Screen 1
A
ESC
Screen 1
A
ESC
Screen 1
ESC
Screen 1 A

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Grease Guardian Controller: Cycle Programming
A
- + OK
Screen 1
Setting a Cycle. Spray Bar (Screen 6)
The spray-bar is set to "ACTIVE" by default. It can be
switched OFF ("INACTIVE") by toggling the "B" but-
ton. The spray bar only runs during the grease skim-
ming phase . Default Time: 5 sec on/55 secs off.
Range ON: 5 to 60 seconds
Range OFF: 20 to 300 seconds
The ON and OFF times can be adjusted using the
sequence
(See Intro note on adjusting time values)
If an automatic spraybar is not supplied, it is best
practice to switch this control to INACTIVE
A
ESC
Screen 1
ESC
Screen 1
- + OK
Installed Date/Pump Interval/Maintenance (Screen 7)
Firstly this screen displays the installed date for the
unit, which is automatically logged when a mains
power signal on site is present for more than 48 hrs.
Also in this screen the pump out interval reminder
can be changed by using the sequence (See
Intro note on adjusting values) Default is 3 months.
Also in this screen the user’s daily “checks” reminder
can be switched off for applications where it is not
required. This is done by toggling button “B”
Default: ON
B

Additional Screen: Setting Time of Day.
To change the time of day, or date, access the clock menu by following sequence:
AND esc
Then - + OK to select “MISCELLANEOUS”
Then - + OK to select “CLOCK”
Then - + OK to select “DATE/HR SETUP” to reach the
display as shown here in the picture (left)
Then - + OK change the hr, minute as required.
First Press OK
esc Press X 4 times to return Home (Screen 1)
when in Home Screen

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Remove the strainer cap by rotating it 1/4
turn counter clockwise, using the hand grips.
User Maintenance
Daily Maintenance, 1-2 times daily
Attention: Ensure sinks are emptied before accessing strainer basket!
Replace the strainer inside the tank and
rotate the screw cap 1/4 turn clockwise
back into its locked position.
Before removing the strainer shake off
excess water by twisting it while it is still
inside the tank.
Dispose the contents into a food waste
bin. Note: Before replacing strainer
rinse the basket mesh under a hot Tap.
Unclip oil container by lifting it up
from the bracket notches and then
move it away from side of tank.
Unscrew oil container cap and
pour skimmed oil contents into a
dedicated waste oil drum

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Next remove wiper blade by lifting front
of blade and moving it back along the
curved slots as shown above.
Wipe and/or rinse any debris from wiper
blade component. Replace blade by
sliding it back into the tank
After replacing blade, replace oil contain-
er onto the bracket notches
At end of day fill a sink with warm water and
release to flush through Grease Guardian,
to remove silt and prevent odors.
Quarterly Pump Out Requirement (every 3 months)
The Home Screen displays the days remaining to the pump out due, from “14” days due.
Failure to ensure timely pump out/vacuum may impair performance and cause odor/odour issues.
Pump outs ensure long-term performance and
comply with our warranty terms. Pump outs must
be carried out by a licenced catering waste collec-
tor. After first disconnecting the Grease Guardian
mains plug, tasks should include the following:
Essential:
◼Tank pump out - all waste and liquid contents
◼Wipe clean of any debris from heater element.
Also recommended, via service partner agreement:
◼Electrical checks
◼Replace rubbers seals/gaskets
◼Staff retraining and timer optimisation
◼Resetting of service reminder

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Troubleshooting
PROBLEM: Unit not removing grease.
Is the power on?
Check that the power is on and that the time control is set correctly. If the power is
being supplied and there is no display check fuses or contact your supplier or service
partner.
Is wiper blade and wiper slot clean?
Clean any build-up present on the wiper blade. (see user maintenance). Ensure the
wiper blade is replaced correctly and makes proper contact with skimming drum. Re-
move the main lid to check this if necessary.
Check the cycle status
First check that “HEATING” or “SKIMMING” is displayed at the start of a cycle. During
the “skimming” phase the skimming motor should be audible. Should there be no
skimmed grease emerging during the cycle, carry out a further test by entering TEST
mode as described earlier in this manual. With the main lid removed and with hands
kept clear of the skimming drum use this feature to check that the skimming drum
rotates for 10 seconds in Test Mode.
Inadequate Heating?
If the skimming drum is turning but grease is not being removed it may not be dissolv-
ing or separating out. If the grease appears hard or crusted, firstly try increasing the
heater’s pre-heat time as advised in the controller pages section of this manual.
Should this have no effect the Grease Guardian heater may require inspection by ser-
vice engineer and possible replacement.
Emulsified, congealed, or foam-like surface waste not skimming out?
If the surface grease layer is foam-like in appearance or grease is still not skimming
out then it may contain high volumes of dairy waste such as mayonnaise, or starchy
waste from rice or pasta. Ensure to reduce volumes of this waste entering the Grease
Guardian. Also restrict any use of aggressive detergents and do not dispose any
bleaching agents into the unit. If a dishwasher is connected its wash process can
prevent grease separating inside adequately the Grease Guardian. Disconnect and
bypass dishwasher appliance. Only use neutral hand-washable detergents at the sink.
Heavy oven cleaning agents can also adversely affect performance if ovens are con-
nected to Grease Guardian.
Check the main Lid is correctly positioned and check the Lid-switch
To ensure safety the Grease Guardian will not operate with the tank lid removed.
In operation, the lid must be fastened in place correctly so that the lid disk magnet is at
the front side, above the control panel surface—but no more than 5 mm (1/5 inch)
above the top of this surface. If this is not the case then the controller display will flash
a LID OFF message and the internal components will not operate. Consult with ser-
vice partner on correct lid magnet positioning if required.
If the LID OFF message continues to display but the lid seems secure then there may
be a fault with the lid switch which is concealed and housed inside the control panel.
Seek service assistance.

20
Troubleshooting
PROBLEM: Small amounts of water inside the plastic grease container.
Check Timer Settings
The unit will skim water if there is no remaining grease in the main tank. Excess water
skimmed will typically settle below the grease layer in the plastic grease collector. Check the
timer settings for excessive ON times. The ON time should be scaled back to reduce water
being skimmed into the collector. The HIGH or MEDIUM skim Modes can be toggled back to
LOW Skim mode for example as described earlier in this manual
________________________________________________________________________
PROBLEM: Surge Water in grease collector and/or spillages onto floor
An obstructed pipe after the unit may result in level rises in the main tank which in some
cases can flow into the grease collector suddenly and in turn onto the floor, if left unchecked
Ensure the outlet pipe-work from the Grease Guardian is installed as specified earlier in this
manual, specifically: that pipes are at a gravity fall and with no more than 2 x 90 degree
bends in the above floor pipe work before the floor termination. Ensure in all cases that the
pipes from the unit are minimally 2 inch diameter. Lesser diameters will cause flow issues.
Ensure that the water flow from the appliance(s) connected to the Grease Guardian does not
exceed the Grease Guardian’s rated flow in gallons per minute (USA) or litres per second
(non USA).
Also ensure that there are no drain line blockages downstream from the unit. Ensure the
unit is pumped out at least once quarterly (every 3 months) so that sludge does not obstruct
the passageways within the main tank.
Do not remove the strainer basket when there is any sink flow entering the unit. Ensure the
Strainer is in the correct locked position after the daily maintenance is completed.
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PROBLEM: Sink flow rate is suddenly reduced
Check Strainer Basket
The strainer basket is designed to restrict food waste transferring to the grease separation
chamber. Excess build-up in the strainer basket can obstruct the sink flow. Ensure that the
strainer basket is emptied 1-2 times daily and the mesh cleaned. This maintenance frequen-
cy should be increased if solids disposal to the Grease Guardian is excessive.
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PROBLEM: Odor/Odour reported
Is adequate vent/ventilation pipework installed as described in this manual?
Inlet pipe ventilation: Ventilation Tee and branch pipe. To prevent odors/odours escaping from the
Grease Guardian into kitchen area the ventilation pipe should be terminated at the building’s stack vent
with the outlet ventilation as below. If ventilating is not possible then alternatively the pump out frequency
will need to be increased to control and reduce waste odors/odours.
Outlet pipe ventilation. Required a/ to prevent sewer odours entering Grease Guardian and b/ in the
absence of a pre-fitted air admittance valve/dip-pipe—will also prevent any siphonage of the system
under peak flows. The pipework should be terminated at final stack vent.