Metcalfe GU4 Manual

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Metcalfe GU4 & GU8
14lb (6.3kg) & 28lb (12.6kg)
Potato Peelers
Installation & Operating Instructions
GU8 High Pedestal (sink height)
shown with guarded discharge
chute and waste disposal adaptor
GU4 Low Pedestal

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2
Index
Your Peeler .................................................................................................... 3
Technical Data ……………………..…………………..................................................... 4
Installation .................................................................................................... 5
-Water Supply Connection ................................................................ 5
-Waste Outlet Connection ................................................................ 6
-Electrical Connection ………………………………………………………………… 6
-Tundish ………………………………………………….……………………………………. 6
-Guarded Discharge Chute ……………………………………………………………. 6
-Large External Interceptor …………………………………………………………. 6
-Filtershield® …………........................................................................... 7
-Waste Disposal Adaptor …………......................................................... 7
Operation ....................................................................................................... 8
Cleaning ......................................................................................................... 8
Maintenance ................................................................................................. 9
-How to Adjust Door Cam .................................................................... 9
Spare Parts & Service Contact Details ........................................................... 9
Warranty ...................................................................................................... 10

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Your Peeler
Water Inlet
Aluminium
Lid
Door Cam
Pedestal
Waste Outlet
Securing Bolts
Door
Handle
Rubber Lid

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Metcalfe GU4 & GU8 Potato Peeling Machines
The Metcalfe 14lb (6.3kg) & 28lb (12.6kg) potato peeling machines are constructed from food grade,
non-corrosive aluminium alloy castings, with the spindle housing and chute cast integrally, eliminating
joints and possible leakage.
Features
•Powerful direct gear drive motors. The GU4 6.3kg and GU8 12.6kg models have 0.5hp geared units
•Low and high (sink height) pedestal models available
•Designed to enable the user to operate, clean and maintain with the minimum of effort
•Motor and gearbox units are housed inside the pedestal therefore no external projections
•The drive between the output shaft of the unit and the drive shaft of the peeler is by means of
a flexible coupling which will prevent damage to the motor or gearbox if the machine is
accidentally jammed or overloaded
•Top casting removeable without tools so that the rotor plate can be lifted out. Turn on water
and whole machine is flushed clean. Cleaning should be carried out daily
•Rotor plate bonding is abrasive grit. Inside wall of peeling chamber has patented cast-in
abrasive serrations which dispenses with the need for abrasive coating. Consequently, there is
less potato loss during both peeling and boiling and the efficiency of the serrations will last the
life of the machine
•All Metcalfe pedestal peelers are available with either single or three phase motors
•All single-phase peelers are supplied with a wall mounted starter which incorporate the ‘on’
switch, emergency stop, no-volt release, overload protection features and are fitted with a
13amp plug
•All three phase peelers are supplied with cord only
•Machines fitted with a water inlet and hose connection incorporating an air-break. Stop tap
can be fitted if required. Provision for fitting water inlet on either side of machine
•Waste outlet screwed 2” BSP female
•Hammer grey painted finish
•CE Approved
Specifications
Model Capacity
(Kg)
Phase
(Ø)
Motor
(Volt)
Frequency
(Hz)
AMP
(A)
Power
(kW) / (hp)
GU4 & GU8 6.3 / 12.6 1 230 50 1.89 0.37 / 0.5
GU4 & GU8 6.3 / 12.6 3 440 50 1.09 0.37 / 0.5
Dimensions | Shipping Information
Model Overall Dimensions
(D x W x H)
Net Weight
(Kg)
Packed Dimensions
(D x W x H)
Packed
Weight (Kg)
Volume
(m3)
GU4 (Low Ped) 491 x 476 x 975 60 520 x 610 x 1290 66 0.4
GU4 (High Ped) 491 x 476 x 1204 64 520 x 610 x 1290 70 0.4
GU8 (Low Ped) 573 x 533 x 1018 67 520 x 610 x 1290 73 0.4
GU8 (High Ped) 573 x 533 x 1247 71 520 x 610 x 1290 77 0.4

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Installation
Unpacking
Unpack the peeler immediately after receipt. Please inspect the peeler to ensure there is no damage and
that all parts are included i.e. water inlet, rubber lid etc. If the machine is found to be damaged, keep all
the packaging and contact us, or your supplier of the equipment, immediately.
You should receive with your peeler:
1 x Water Inlet Nozzle
2 x Lifting Hook
1 x Instruction Manual
If any of the above items were not received with your peeler, please refer to page 9 for contact details
and inform us immediately for replacements.
The machine should be secured to the floor before first use.
Water Supply Connection
The water inlet nozzle connector is supplied and should be fitted to the outside
of the machine facing upwards. It has two possible inlet locations, one on either
side of the machine, whichever is more convenient for your installation.
1. Thread the water inlet valve (1) onto the elbow joint (2), ensuring a fibre
washer (4) is placed between the two.
Ensure the valve is tightened securely to eliminate leakages.
2. Take the water inlet bush (3) with a fibre washer (4) placed over it and feed
through the chamber wall from the inside.
3. Place another fibre washer (4) onto the water inlet bush on the exterior side of the chamber. Take
the assembly from step 1 and thread the remaining elbow joint opening onto the water inlet bush.
Ensure the assembly is tightened securely to eliminate leakages. Also ensure the water inlet
valve is pointing directly upwards, otherwise the air gap does not function correctly.
Connect the water supply pipe to the water inlet, connect the other end of the supply pipe to a cold water
tap or shut off valve that can be used to supply a sufficient water flow into the machine.
1
3
4
2

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Waste Outlet Connection
The waste outlet is located on the right-hand side of the machine but can be
used on either side of the machine to suit your installation. If you require the
waste outlet on the left-hand side, unbolt the peeling chamber and rotate. Pipe
work for the waste outlet is not supplied.
Electrical Connection
Single Phase: The machine works off 220/240V 50Hz 1 phase supply, it is fitted with a wall mounted
starter which incorporates the ‘on’ switch, emergency stop, no-volt release and overload
protection features. It also comes fitted with a 3-pin 13amp fused plug.
Three Phase: The machine works off 380/415V 50Hz 3 phase supply, supplied with power cord only.
Having connected the water inlet, waste outlet and the electrical supply, the machine is ready for
operation.
Installation of Optional Extras
Tundish (optional extra)
The use of a tundish meets the requirements of water regulations G19.1,
G19.3 & G19.4 contained in “The Water Supply Regulations 1999” and the
“Water Byelaws 2000 (Scotland)”.
The tundish can be fitted instead of the standard water inlet nozzle supplied
with all Metcalfe peelers.
Guarded Discharge Chute (optional extra)
Patent No. 2013815
The peeler can be fitted with a guarded discharge chute. If purchased this would
be inside the peeling chamber of the unit upon delivery.
The guard protects the operator by allowing the door to the chamber to be
opened which stops hand access through the door aperture whilst the machine is
working.
Large External Interceptor (optional extra)
The external interceptor consists of a steel tank and woven wire basket, rust
proofed after manufacture. The outlet from the tank is screwed 2” (5cm) BSP.

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Filtershield® (optional extra)
This is the most effective method of stopping food waste from kitchen
operations getting in the drainage system. After Fats, Oils & Grease,
FOOD WASTE is the next biggest cause of drain blockages for the
catering industry.
Supplied as standard with a 4mm filter basket the Metcalfe Filtershield
will catch anything 4mm or bigger. It has adjustable feet which allow for
height adjustment up to +50mm.
Capacity: 25 Litres
Inlet: Ø 41mm
Outlet: Ø 41mm
Flow Rate: 2.5 Litres per sec
Waste Disposal Adaptor (optional extra)
The waste disposal adaptor dispenses with the need for an interceptor. It enables
the waste pipe to be connected direct to the drain and gives an additional water
supply to the waste outlet to flush away the sludge.
The waste disposal adaptor fits onto the waste outlet on the side of the peeler.
Ensure that the waste disposal adaptor is vertical and securely in place.
Two adjusting screws and lock nuts are provided to adjust the water flow through
the machine. The top one controls the flow through the peeler and the lower one
controls the flow to the waste pipe.
Approved polythene tubing fitted to water inlet nozzle
Control tap to peeler set to allow water jet to reach opposite
side of peeling chamber approximately 2” above rotor plate
Mains water inlet 3/8” BSP
Control screw to waste outlet, set for maximum flow after
setting control screw to peeling chamber
2” push fit cold water pipe fitting
Pipe thread 2” BSP

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Operation
Full operational instructions can be found on the side of each peeler.
1. Ensure that the chute door is closed.
2. Turn on the machine by pressing the green start button.
3. Turn on the water supply.
4. Remove the rubber lid and load the potatoes through the top of the peeler and replace the lid.
DO NOT load the potatoes before running the unit as this will damage the bearings, shaft
assembly & motor and will void the warranty.
5. Carefully remove rubber lid to check peeling progress.
6. Once peeled, open the door whilst the machine is still running to discharge the potatoes into a sink
or bucket.
7. Once empty, you can then switch the machine off.
DO NOT at any point put your hand or any implement into the machine, whilst it is in
operation.
Cleaning Instructions
Daily cleaning should be considered mandatory for all equipment used in the preparation of food. Once
your peeler has made contact with any food product, the entire peeler, including removable parts must
be thoroughly cleaned. This process is to be repeated essentially at least once a day, or at the end of
each operation period. If the machine has not been used for a while it must be cleaned before use as
well.
1. Switch off unit at socket.
2. Remove metal lid.
3. Lift out the rotor plate using the lifting hooks provided.
4. Turn on cold water supply to clean the inside of the chamber with a nylon brush.
5. To clean the rotor plate, wash in cold water ONLY using a nylon brush.
NEVER wash the plate in hot water or in a dishwasher.
6. Use a damp cloth to wipe the outside of the unit.
DO NOT use cleaning materials containing abrasives or bleaches.

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Maintenance
How to Adjust Door Cam
Over time the door may loosen slightly. If this happens a door cam has been fitted to enable the
operator to retighten the door.
1. Undo the nut underneath the chute
to loosen the cam.
2. Turn the door cam into position so that the door handle can
be locked in place securely.
3. Retighten the nut to secure the door cam into its new and
correct position.
Spare Parts and Service
For more information on Metcalfe spare parts, accessories and service support, including breakdown
drawings and parts lists please contact us on the details below.
Please always quote the Serial Number of the machine. This can be found on the serial number plate
which is located on the rear of the machine.
Metcalfe Sales & Spares Department [e-mail]
Metcalfe Service Department [e-mail]
Metcalfe Website www.metcalfecatering.com
Metcalfe Telephone Number 01766 830 456
Additional copies of this instruction manual can be obtained by either visiting our website or contacting
the sales department.

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Metcalfe Warranty
All Metcalfe products are guaranteed against defects in material and workmanship for a period of one
year from date of Invoice, except where specially noted.
The Company's obligation under this warranty is limited to repairing or replacing, without charge, any
part or parts found to be defective under normal use, in accordance with the specified operations manual
and capacity ratings.
On all return to factory warranty items, it is the responsibility of the purchaser to return the entire unit to
the factory, in a clean condition, properly packed and labelled.
All repairs, alterations or replacement of materials or parts not authorised by Metcalfe will automatically
void all warranties in their entirety.
All Metcalfe slicers (except Simple Line) are covered by a 2-year warranty (1st year parts and labour, 2nd
year parts only) and full after sales service.
All Metcalfe SP mixers are covered by a 3-year warranty (1st year parts and labour, 2nd & 3rd year
parts only) and full after sales service.
There is a limited 6-month warranty on the following:
•Mixer attachments (beater, whisk and dough hook)
•Parts purchased or supplied for the repair of Metcalfe equipment
This warranty does not cover the following:
•Failure due to neglect, abuse, careless handling or misuse of machine
•Failure caused due to improper maintenance
•Blender clutches
•Knives and gears on can openers
•Sharpening of slicer blades
•General wear and tear
Metcalfe and its suppliers reserve the right to make changes in design and specification to any product
without prior notification.

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Some other products in the Metcalfe portfolio:
NS Slicer Range Mixer Range
Ceado Roband
5/2021
Metcalfe Catering Equipment Ltd
Haygarth Park
Blaenau Ffestiniog
Gwynedd, LL41 3PF
t 01766 830 456 e [e-mail] wwww.metcalfecatering.com