robatherm AR3 User manual

31/10/2013
Proudly Distributed By
ROBAND AUSTRALIA PTY LTD
OPERATING INSTRUCTIONS
ROBATHERM AUTOFILL BOILING WATER UNIT
Models
AR3, AR5, AR7, AR10,
AR15,AR25, AR40
Version 1
These instructions cover the models of Robatherm Boiling Water Units listed above, Although
there are slight variances between models, the installation, operation, care and maintenance
procedure is the same for all.

Roband®Australia is a wholly Australian owned company and has been manufacturing
quality commercial catering equipment for the food service industry for more than 50
years. Roband products are engineered and manufactured to the highest standards to
provide functionality, reliability and durability, and our quality products are exported
world-wide.
Included in the comprehensive Roband®range are Toasters, Fryers, Milkshake Mixers,
Rotisseries, Food Display Cabinets and much more.
Roband®Australia also acts as the Australian agents for Vitamix®Blenders, Noaw®
Meat Slicers, Ryno®Stainless Benching, Ceado Juicers, Förje®Cookware, RobalecTM
Soup/Rice Warmers, Robatherm Urns, Austheat®Fryers, Dipo Induction & Autofry
Machines. Roband also has its own line of commercial cookware and cutlery under the
Robinox®brand name.
For a complete set of brochures please contact your nearest authorised dealer or
contact Roband directly at our head office.
© Copyright 2013 –Roband® Australia Pty Ltd
All rights reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or
mechanical, including photocopying or posting to a website, without the written permission of the publisher. The
material contained within this document is intended entirely for instructional purposes.
Roband Head Office
Sydney, Australia
RobandAustralia Pty Ltd
Tel:
[phone]
1 Inman Road
Fax:
[phone]
Dee Why NSW 2099
Email:
[email protected]
AUSTRALIA
Web:
www.roband.com.au
International Agents
For additional agents please email Head Office
Cyprus:
United Catering Equipment Supplies
Singapore:
Jelco Private Ltd
Ph: [phone]
Ph: [phone]
Fiji:
Hotel Equipment Ltd
Switzer-
land:
Burgi Infra Grill
Ph: [phone]
Ph: [phone]
Hong Kong:
Chung Wah Kitchen Machine Ltd
Thailand:
Seven Five Distributors Co Ltd
Ph: [phone]
Ph: [phone]
Malaysia:
Allied Food Equipment
United Arab
Emirates:
Boncafe Middle East LLC
Ph: [phone]
[phone]
Maldives:
Radiant Heat Maldives Pty Ltd
United Arab
Emirates:
Nisa Trading LLC
Ph: [phone]
[phone]
New
Zealand:
Roband New Zealand
United
Kingdom:
Metcalfe Catering Equipment
Ph: [phone]
Ph [phone]
Noumea:
Comptoir Materiel Professionnel
USA:
Condon & Fisher International
Ph: [phone]
Ph: [phone]
Noumea:
CHR Import
Ph: [phone]
Papua New
Guinea:
Brian Bell & Company Pty Ltd
Ph: [phone]

CONTENTS
INTRODUCTION.....................................................................................................1
GENERAL PRECAUTIONS.....................................................................................1
PACKAGING ...........................................................................................................2
COMPLIANCE.........................................................................................................2
INSTALLATION.......................................................................................................3
OPERATION............................................................................................................7
GENERAL SAFETY...............................................................................................12
CLEANING, CARE & MAINTENANCE ..................................................................12
TROUBLESHOOTING...........................................................................................13
PRODUCT ERROR CODES..................................................................................14
SPECIFICATIONS.................................................................................................15
CIRCUIT DIAGRAM...............................................................................................17
WARRANTY..........................................................................................................20

Page: 1
INTRODUCTION
Congratulations on your purchase of this quality Robatherm product. With proper
care and management your new purchase will give you years of trouble free
service.
By reading these instructions carefully you can ensure that this machine is used
and maintained properly, helping your new investment to perform well for you now,
and to continue performing in the many years to come.
GENERAL PRECAUTIONS
This machine must only be operated by qualified person(s) who are fully versed in the
operating and safety instructions described in this manual. Operators should be
instructed to familiarise themselves with any and all safety instructions described in
this manual prior to commencement of any maintenance or service.
In the case of new personnel, training is to be provided in advance. These machines
should not be operated by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience or knowledge, unless they are being
supervised or being instructed concerning the safe use of the appliance by a person
responsible for their safety.
The machine should be disconnected from all power and allowed to cool
before cleaning. Any damaged plug or cord should be replaced before further
use.
These machines should not be cleaned with the use of a spray applicator, water jet or
any other method except those outlined in the Cleaning & Care section of these
instructions.
Roband will accept no liability if;
Non-authorised personnel have tampered with the machine.
The instructions in this manual have not been followed correctly.
Non-original spare parts are used.
The machine is not cleaned correctly, with the right product.
There is any damage to the unit

Page: 2
PACKAGING
All care is taken when packing and Roband ensures that every unit is functional
and undamaged at the time of packaging.
The Package of this Boiling Water Unit should include:
1. One Boiling Water Unit (appropriate model)
2. This Manual
Any damage to the machine as a result of freight must be reported to the Freight
Company and to the agent responsible for the despatch of said unit within 24 hours
of receipt. No claims will be accepted or entertained after this period.
To prevent damage during transport, the tap is packed inside the unit housing. For
the AR3, AR5 and AR10 units, remove the four screws located on the top and
bottom of the unit and slide the housing toward you. For AR15, AR25 and AR40
models, unscrew and remove the access panel on the left hand side of the unit.
C-Tick:
Robathermproducts have been designed and manufactured to comply with any and
all specifications set out by the Australian Communications Authority (ACA) in
regards to Electromagnetic Compatibility. As testament to such compliance these
units bear the C-Tick symbol.
For further information contact the Australian Communications Authority, PO Box
13112, Law Courts, Melbourne VIC 8010.
COMPLIANCE

Page: 3
INSTALLATION
Remove all the packaging materials and tape, as well as any protective plastic from
the machine. Clean off any glue residue left over from the protective plastic or
tape.
Note: Caution is suggested if the Boiling Water Unit is to be connected to a water
supply with a high content of silica or calcium. Water supplies of this nature may be
detrimental to the unit’s operation and may cause the warranty to become void. For
further information relating to the guidelines of water quality, contact your local
Roband office for advice.
This boiling water unit shall be installed by a qualified service person. The
installation must comply with AS/NZS 3000 and AS/NZS 3500.4 and all relevant
statutory and local body requirements of the state in which the Boiling Water Unit is
installed.
This boiling water unit contains electronic equipment and insulation tests must only
be conducted between neutral and earth or between active and earth.
LOCATION
This unit is designed for interior installation only.
OPENING THE UNIT
To remove the cover from models AR3, AR5, AR7 & AR10 remove the 4 retaining
screws at the top and bottom and pull the jacket forward. For models AR15, AR25
and AR40, unscrew the service plate on the left hand side and lid at the top.
MINIMUM CLEARANCES
For ventilation reasons, all units require a minimum clearance of 50mm on all sides.
For ease of servicing (where there is sufficient space) we recommend 300mm
clearance from the top of all units. For element replacement reasons we
recommend clearance of 150mm from the right hand side of 3 to 10 litre units and
300mm from the left hand side of the 15, 25 and 40 litre units.
MOUNTING
The unit, when installed, is suspended from mounting screws located into keyhole
slots at the back of the unit (refer to the Mounting Dimension Specification).
Be sure that the mounting screws are securely inserted into the keyhole slots. The
screws MUST be anchored in such a way, that they will hold the weight of the unit
when filled with water, (refer to Figure 1).
WARNING:
Before drilling into the wall make sure that the screw positions avoid any pipe-work
or electrical cables. Allow 4 mm clearance between the screw head and the wall
for locating the unit.

Page: 4
Model
3 L
5 L
7.5 L
10 L
15 L
25 L
40 L
J mm
46
46
46
46
75
75
75
K mm
189
241
241
241
340
340
340
L mm
31
31
31
31
20
20
20
Figure 1: Mounting Dimension Specification
WATER SUPPLY CONNECTION
Cold mains pressure water (refer to specification table for minimum water
pressures) must be piped and connected to the ½” BSP inlet fitting located on the
left hand side underneath the unit. An accessible isolating valve must be installed
near the unit.
This unit contains an inlet strainer on the water inlet connection (refer to figure 1).
To ensure continuing satisfactory operation, it is suggested that the inlet strainer be
serviced every six months by a qualified service person. Where poor water quality
is present it is recommended to install an additional auxiliary filter.

Page: 5
Figure 2: Water Connection & Overflow/Vent Connection
For rear entry connection on 3-10 Litre models, we recommend that you use a
braided flexible hose with a 90elbow for ease of connection.
An isolating valve should be installed in the system to enable water to the unit to be
turned off in the event of any fault.
OVERFLOW / VENT CONNECTION IMPORTANCE
Connect a 15 mm (½”) pipe to the overflow/vent connection (½”BSP nipple). This
pipe is to be made of a material such that continuous steam will not degrade it (eg
copper). This pipe must have a continuous fall, not exceeding 3 metres in length
and / or contain no more than 4 bends (refer to figure 2).
The drain pipe work must not exert a pressure of more than 1 metre of head on the
boiling unit (refer to figure 2).
If the site situation requires a pipe length exceeding 3 metres, or a discharge head
(vertical distance between vent outlet and inlet) greater than 1 meter, then
discharge the overflow/vent into a tundish.
During normal operation of the unit, the overflow/vent connection may discharge
small quantities of steam and condensate, so it is ESSENTIAL that the drain pipe is
attached to the overflow vent connection. This drain pipe must discharge to waste
at a point where no scald injury, nuisance nor inconvenience is caused to people in
the immediate vicinity.
Overflow / Vent Connection

Page: 6
DRAINING THE UNIT
WARNING:
Before draining the unit, ensure the appliance has been switched off, and
water is not hot enough to scald.
To drain 3-25L models, turn unit off and open tap until no water flows out. Remove
unit from wall and tip over with tap open until unit is empty. For 40L units, a drain
plug is accessible from the bottom of the unit (note switch unit off before draining)
TAP OUTLET
To prevent damage during transport, the tap is packed inside the unit housing. For
the AR3, AR5 and AR10 units, remove the four screws located on the top and
bottom of the unit and slide the housing toward you. For AR15, AR25 and AR40
models, unscrew and remove the access panel on the left hand side of the unit.
The tap is connected to the tap extension by a chrome-plated nut and tightened
using a 29 mm AF spanner.
ELECTRICAL REQUIREMENTS:
WARNING:
If this boiling water unit is to be installed in a newly constructed building, ensure
that all electrical tests including insulation tests have been performed prior to
plugging in and switching on your new Boiling Water Unit. Failure to do so could
damage the electronics.
220 –240 Volts AC, 50 Hz, Single Phase
10 Amps on 3, 5, 7.5,10 & 15 litre models
15 Amps on 25 litre model
20 Amps on 40 litre model
A flexible cord complete with a plug is supplied on AR3-AR15 models. Do not
loosen the cord grip or pull excess cord into the water boiling unit. If the supply cord
of this unit is damaged, it must be replaced by Roband or a qualified service
person.
The 25 and 40 litre models must be installed with fixed wiring. A means of
disconnection from all active (phase) conductors of the power supply must be
incorporated during installation in accordance with the wiring rules.

Page: 7
OPERATION
Once the installation is complete, turn the water supply on before switching on the
power. The unit is programmed to automatically operate 24 hours a day, 7 days a
week. It is highly recommended for the user to program the timer (if the unit
supplied has one), as this will increase the life of the unit and consume less power
(see below for instructions detailing how to program the timer).
Note: On initial start-up the timer screen will display “CALIBRATING DO NOT
INTERRUPT”. The unit automatically runs through a set-up cycle to detect the
boiling point of water. This will take between 18 to 30 minutes (depending on the
unit capacity) and steam will discharge from the vent pipe for a short time. Do not
operate the tap during the set-up cycle because it may affect the unit operating
temperature.
The electronic controller constantly monitors and controls the water level and water
temperature to optimise the boiling water delivery.
INITIAL OPERATING INSTRUCTIONS
After the unit has been installed, replace the front cover and fit the tap by wrapping
a couple of turns of Teflon tape around the thread and turning tap clockwise into the
socket on the front of the unit. If the tap is not completely tight, remove it and add
more Teflon tape then repeat the procedure. Turn on the water and check for
leaks. Turn on the power and wait twenty minutes before using.
During this period the unit will function in the following sequence.
The unit will first prime itself with water up to the tap level.
The element will then be energised and that initial amount of water will be boiled,
taking approximately 10 to 15 minutes.
The unit will then start the automatic heat and fill cycle until the tank is full.
The unit will then go into “maintenance mode” keeping the water at boiling point.
Please note: The units are factory set and are not user serviceable. If the unit
malfunctions refer to TROUBLESHOOTING for advice. If that advice fails to solve
the problem, contact your distributor or our office for further help.
Operation based on an inlet water temperature of 18ºC
Capacity
Approx. Recovery
Approx. Time to
heat full Capacity
(min)
Litres
Cups(160ml)
Litres / Hour
Cups (160ml) / Hour
3
19
17.5
109
12
5
31
21
131
15
7.5
47
21
131
22
10
62
21
131
29
15
94
21
131
40
25
156
33
206
40
40
250
41
256
50

Page: 8
FOR UNITS WITH TIMER
Timer Functions
A. Clock
B. Timer STD/AUTO
C. Set Sleep Delay Time*
D. Set ON/OFF Times*
E. Filter Life
i. Remaining Life
ii. Filter Reset
iii. Service Menu
* ON/OFF times & Sleep Delay Time only operate in AUTO Mode.
To select a Timer Mode
Press the (Prog) button until the desired mode is displayed on the screen. Press
the (Accept) button to confirm selection. Pressing (Cancel) button at any time
returns the unit to the main menu. Any functions previously accepted will be
retained.
Note: The display will revert back to main menu from any mode if a button has not
been pressed for 1 minute.
A) Setting the Clock
Select the clock mode
(Prog>Clock>Accept)
Display Shows: “Set Clock Day”.
Press the (UP) button until the desired day appears on the screen and press the
(Accept) button to confirm selection.
Display Shows: “Set Clock HOUR”
Press the (UP) button until the desired hour (24 Hour Time) appears flashing on the
screen and press the (Accept) button to confirm selection.
Display Shows: “Set Clock MIN”
Press the (UP) button until the desired minute appears flashing on the screen.
Press the (Accept) button to confirm selection and the display reverts to the main
menu
B) Set Timer to STD/AUTO Mode
Select the Timer STD/AUTO mode (Prog>Timer STD/AUTO>Accept)
Display Shows: “STD”
Pressing the (UP) button alternates the “STD”/“AUTO” icons. STD operation means
that the unit operates 24 hours a day, Auto mode reverts the unit to operate at the

Page: 9
pre set times on the timer. Press the (Accept) button to confirm selection and the
display reverts to the main menu. If the timer is in AUTO mode, pushing any Timer
key will reactivate the unit. The unit will operate normally until the next programmed
“Off” time.
C) To Set Sleep Delay Time.
Select the Sleep on/off mode (Prog>Sleep DelayTime>Accept)
Display Shows: “Sleep Delay Time” “ OFF”.
The sleep function puts the unit in a standby mode after user defined period.
The Sleep Delay will be factory set to OFF as the default setting. Pressing the (UP)
button increases the delay time up to 6 hours. Press the (Accept) button to confirm
selection and the display reverts to the main menu. The unit will go into “Sleep”
mode if it has not been used for the “Sleep Delay Time” period. To exit “Sleep”,
push any Timer key.
D) To Set ON/OFF Times
Select the Timer ON/OFF mode
(Prog>Set ON/OFF times>Accept)
Note: to set the unit to be in off mode for an entire day, set the “on” and “off” times
to be the same eg: On = 0:00 Off = 0:00
Display Shows: “SUN” “7:00 –7:00” “Set ON hour”.
Press the (UP) button until the desired hour appears on the screen and press the
(Accept) button to confirm selection.
Display Shows: “SUN” “7:00 –7:00” “Set ON minute”.
Press the (UP) button until the desired minute appears on the screen and press the
(Accept) button to confirm selection.
Display Shows: “SUN” “7:00 – 7:00” “Set OFF hour”.
Press the (UP) button until the desired hour appears on the screen and press the
(Accept) button to confirm selection.
Display Shows: “SUN” “7:00 – 7:00” “Set OFF Minute”.
Press the (UP) button until the desired minute appears on the screen and press the
(Accept) button to confirm selection and advance to the next day.
Display Shows: “MON” “7:30 –15:30” “Set ON hour”.
Note: Continue with same procedure for Monday through to Saturday.
E) Filter Life
Select the Appropriate Filter Mode
Remaining Life
Filter Reset

Page: 10
i) To Select Remaining Life mode
(Prog>Filter Life>Accept>Remaining Life)
Display Shows: “Remaining Life”
“XXXX litres“
Press the (Cancel) or (Accept) button to revert back to the main menu.
ii) To Select the Filter Reset mode
(Prog> Filter Life >Accept>filter reset>Accept)
Display Shows: “Filter Reset”
Press the (Accept) button to confirm selection at which time you are prompted “Are
you sure?”. Press (Accept) once more reset the filter and to return to the Filter Life
Menu.
Display Shows: “Set Filter Life” “4000 Litres”.
Pressing (UP) button scrolls to the filter OFF selection (this turns the filter count off
if a filter is not installed with the boiling water unit). Press the (Accept) button to
confirm selection and the display reverts to the Filter menu
Filter count can be adjusted in the range of 1000 litres to 14000 litres in increments
of 1000 litres
F) Service Menu
Select Appropriate Service Mode
i. Error Codes
ii. Boiling Temp
iii. Chiller Temp (Not Used)
iv. Calib Reset
v. Software Version
vi. Temp Show ON/OFF
vii. TB Treq
viii. Temp override
ix. i) Error Codes
(Prog>Service>Accept>Error Codes)
This function allows easy identification of problems occurring with the unit by
service technicians (see details on page 10 –Product error codes).
ii) For Boiling Unit Display Temp mode
(Prog>Service>Accept>Boiling Temp)
Display Shows: “XXX ˚C“
This function displays the current hot water temperature.
Press the (Cancel) button to revert back to the main menu.

Page: 11
iii) Not Used
Display Shows: “XXX ˚C“
Press the (Cancel) button to revert back to the main menu.
iv) For Calibration Reset mode
(Prog>Service>Accept>Calib.Reset>Accept)
Display Shows: “Calib. Reset“
This function recalibrates the boiling water unit to boiling point. Press the (Accept)
button to recalibrate the boiling point. Press (Accept) again at the “Are You Sure”
prompt. Press the (Cancel) button to revert back to the Main menu.
v) To Display the Software Version
(Prog>Service>Accept>Software Version>Accept)
vi) Temp Show On/Off
(Prog>Service>Accept>TempShow ON/OFF)
This function allows the temperature of the water within the boiling water unit to be
displayed permanently on the screen. Press the (Accept) button to confirm
selection and the display reverts to the main menu
vii) TB Treq
(Prog>Service>Accept>TB Treq)
This function shows the user the temperature to which the unit is calibrated. Under
the letters TB the boiling calibration temperature is displayed. The temperature
displayed beneath the letters “Treq” indicates the temperature at which the unit will
maintain the water.
viii) Temperature override
(Prog>Service>Accept>Temp Override>Accept)
This function allows the serviceman to perform a fast unit calibration.
Keypad Lock
This function provides extra security to prevent tampering with the unit settings.
Default setting is disabled.
(Prog>Keypad Lock>Accept)
The message “Keylock Enabled” will display on screen. Press Accept key.
“Keypad locked” message will display on screen every time a timer button is
pressed.
To deactivate this function press Progr and Up buttons simultaneously for a period
of 5 seconds.

Page: 12
SAFETY 
GENERAL SAFETY
This machine contains no user-serviceable parts. Roband Australia, one of our
agents, or a similarly qualified person(s) should carry out any and all repairs. Any
repair person(s) should be instructed to read the Safety warnings within this manual
before commencing work on these units.
Steel cutting processes such as those used in the construction of this
machine result in sharp edges. Whilst any such edges are removed to the
best of our ability it is always wise to take care when contacting any edge.
Particular care should be taken to avoid contact with any steel edge, and warnings
should be given in regards to the danger of such contact to any repair or
maintenance person(s) prior to commencement of any servicing.
Do not remove any cover panels that may be on the machine.
This unit can get very hot. Ensure everyone is aware that the machine is
operating and take care to avoid contact with hot surfaces.
Always ensure the power cable is not in contact with hot parts of the machine when
in use.
Keep out of reach of children.
Ensure that any damaged power cord is replaced before further use.
CLEANING, CARE & MAINTENANCE
To clean the Hot water Urn, use hot soapy water with a clean sponge or cloth to
wipe the external surfaces.
Caution: Although every care is taken during manufacture to remove all
sharp edges, care should be taken when cleaning to avoid injury. Particular
care should be taken when cleaning near the edges of the unit.

Page: 13
TROUBLESHOOTING
If the Boiling Water Unit does not function, check the following points before calling
for service.
#
SYMPTOM
POSSIBLE CAUSE
REMEDY
1.
The unit does not fill with
water
There is no power
supply
Check the electrical supply –Check
that the unit is plugged in.
There is no water supply
Check the water supply.
The inlet strainer is
blocked
Check the Inlet Strainer, clean or
replace.
Electronic Controller
failure
Test the electronic controller.
Solenoid Valve failure
Check resistance of the solenoid,
replace if broken.
The Filter is blocked (If
unit is supplied with an
inlet water filter)
Check the filter, replace if blocked
(see section 5E for re setting the
filter)
2.
The unit fills water to low
level and does not heat
Thermal cut-out has
tripped
Reset the thermal cut-out.
Heating element failure
If the heating element is properly
wired, then check its resistance.
Replace if broken.
Electronic Controller
failure
Test the electronic controller.
Thermistor failure
Replace the thermistor.
3.
The unit boils
continuously
Low Air Pressure
Recalibrate the unit (see section 5F
sub section v) for how to recalibrate
the unit
Electronic Controller
failure
Test the electronic controller.
Thermistor failure
Replace the thermistor.
4.
The unit overflows
Incoming water pressure
is too high
Reduce incoming water pressure.
Solenoid valve failure
Turn the unit off. If water still
overflows, replace the solenoid
valve.
Level probe failure
Clean the level probe
Replace the level probe
5.
There is no water from
the tap
The unit did not fill with
enough water
See 1. & 2. above.
The tap diaphragm is
disconnected from its
spindle
Drain water out of the unit
(see paragraph 6 on page 4).
When unit is empty, disassemble
and repair the tap.
**It is strongly recommended that any REMEDY be carried out by a qualified service person**
NOTE: Should the unit have a fault in which the machine is leaking, turn the power off and open
the tap to drain the unit. DO NOT REMOVE THE UNIT FROM THE WALL, as service will only be
carried out if the unit is still mounted and connected.

Page: 14
PRODUCT ERROR CODES
Error
Code
Hot Thermistor O/C, S/C
A
Heating Triac S/C –uncontrolled temperature rise
C
Expired Filter
E
Calibration Time Out
G
Low Level Probe Fault
H
High Level Probe Fault
J
Water Heating Fault
L
Internal Software Reset –No action req’d.
M
Rapid Temperature Rise –i.e. Empty Tank
N

Page: 15
SPECIFICATIONS
Drawing Applies To All Models

Page: 16
SPECIFICATIONS continued
Key to Drawing Dimensions:
Dimension
3 Litre
5 Litre
7.5 Litre
10 Litre
15 Litre
25 Litre
40 Litre
A mm
283
334
334
334
490
490
490
B mm
143
176
176
176
180
235
325
C mm
400
430
515
615
615
615
615
D mm
234
267
267
267
271
326
416
E mm
15
15
15
15
8
8
8
F mm
50
50
50
50
32
32
32
G mm
53
53
53
53
103
103
103
H mm
18
18
18
18
32
32
32
N mm
212
245
245
245
249
304
394
M mm
142
167
167
167
245
245
245
Specifications:
Size (L)
3
5
7.5
10
15
25
40
Approx. Weight –Empty (Kg)
6
8
9
10
15
17
19
Approx. Weight –Full (Kg)
10
15
19
22
34
47
67
Min Water Pressure (kPa)
50
50
50
50
75
75
100
Max Water Pressure (kPa)
1000
1000
1000
1000
1000
1000
1000
Element Power (kW)
1.8
2.4
2.4
2.4
2.4
3.6
4.6
Table 3: Dimension Specification

Page: 17
CIRCUIT DIAGRAM
3 –15L MODELS
25 & 40L MODELS
NOTE: This circuit diagram has been provided for reference and to assist qualified service
and repair agents only. Under no circumstances should person’s not suitably qualified
attempt repairs to any electrical equipment.