Classeq G 350 Quick start guide

Engineers manual
Under counter machines

Engineers manual
Under counter machines
Page 1
Table of Contents
1. INTRODUCTION...........................................................................................................................................3
INSTALLATION AND COMMISSIONING...............................................................................................................31.1
SERVICE AND REPAIRS..................................................................................................................................31.2
MODIFICATION..............................................................................................................................................31.3
2. EXPLANATION OF SYMBOLS USED.........................................................................................................3
3. WARNING AND SAFETY INFORMATION ..................................................................................................3
DANGER WARNINGS......................................................................................................................................33.1
WARNINGS...................................................................................................................................................33.2
CAUTIONS....................................................................................................................................................33.3
4. MACHINE SPECIFICATIONS ......................................................................................................................4
SYSTEMS MATRIX .........................................................................................................................................44.1
MECHANICAL SPECIFICATIONS AND SITE REQUIREMENTS.................................................................................44.2
WIRING........................................................................................................................................................4
4.3
COMPONENTS ..............................................................................................................................................54.4
4.4.1 Pump wiring........................................................................................................................................6
4.4.2 Winding legend...................................................................................................................................6
5. WATER PATHS............................................................................................................................................7
PRESSURISED SYSTEM..................................................................................................................................75.1
UNPRESSURISED SYSTEM .............................................................................................................................85.2
WATER SOFTENER SYSTEM...........................................................................................................................95.3
WATER SOFTENER UNIT ..............................................................................................................................105.4
WATER WAYS LEGEND ................................................................................................................................115.5
6. LOGIC.........................................................................................................................................................12
INDICATOR LOGIC........................................................................................................................................126.1
6.1.1 Heating indicator ..............................................................................................................................12
6.1.2 Cycle indicator..................................................................................................................................12
FILL AND HEAT............................................................................................................................................136.2
6.2.1 Pressurised fill and heat...................................................................................................................13
6.2.2 Unpressurised fill and heat...............................................................................................................14
WASH AND RINSE........................................................................................................................................156.3
DRAIN........................................................................................................................................................166.4
CHEMICAL DOSING......................................................................................................................................176.5
WATER SOFTENER UNIT ..............................................................................................................................176.6
7. COMMISSIONING/SERVICE MODES .......................................................................................................18
COMMISSIONING/SERVICE INTERFACE..........................................................................................................187.1
COMMISSIONING MODE ...............................................................................................................................187.2
SETTING CHEMICAL DOSAGE .......................................................................................................................197.3
PRIMING CHEMICALS...................................................................................................................................197.4
INTEGRAL WATER SOFTENER (IF FITTED)......................................................................................................19
7.5
7.5.1 Commissioning the water softener unit............................................................................................19
7.5.2 Setting the water softener ................................................................................................................20
7.5.3 Water softener settings ....................................................................................................................20
SERVICE MODE...........................................................................................................................................217.6
7.6.1 Program value..................................................................................................................................21
7.6.2 Product Interlock settings.................................................................................................................22
7.6.3 Re-set to Factory settings ................................................................................................................22
7.6.4 Loads................................................................................................................................................23
7.6.5 Errors................................................................................................................................................24
7.6.6 Statistics...........................................................................................................................................26

Engineers manual
Under counter machines
Page 2
8. CONTROL UNIT .........................................................................................................................................27
INPUTS AND OUTPUTS.................................................................................................................................27
8.1
8.1.1 Main board .......................................................................................................................................27
8.1.2 Water softener board........................................................................................................................28
BOARD SETUP ............................................................................................................................................298.2
9. CABLE REPAIR KITS ................................................................................................................................30
AVAILABLE CABLE KITS LIST........................................................................................................................309.1
CABLE KIT INFORMATION ............................................................................................................................309.2
CABLE KIT DIAGRAM...................................................................................................................................319.3
10. TOOL LIST..................................................................................................................................................32
11. NOTES........................................................................................................................................................32
12. QUICK REFERENCE..................................................................................................................................33
13. MACHINE RATING.....................................................................................................................................34
14. WIRING DIAGRAMS ..................................................................................................................................36

Engineers manual
Under counter machines
Page 3
1. Introduction
Prior to reading this manual it is essential that you are familiar with the contents and subject matter
covered by the “Installation and Operation manual”.
Installation and commissioning1.1
Installation and commissioning instructions are detailed in the “Installation and Operation
manual” and should always be followed. Incorrect installation may invalidate any warranties.
Service and repairs1.2
Repairs to the machine should only be carried out by a Classeq approved/trained technician using
genuine Classeq parts. Failure to do so may invalidate any warranties.
Modification1.3
Classeq reserves the right to modify the machine or the contents of this manual without notice.
2. Explanation of symbols used
DANGER!
Warning against potentially
serious or fatal injuries to persons
if the described precautionary
measures are not taken.
►
This symbol refers to a chapter
with more detailed information
Warning!
Warning against potentially minor
injuries to persons or material
damage if the described
precautionary measures are not
taken
1
Refer to foot note at bottom of
page
Caution
Warning against defects in or
destruction of the product if the
described precautionary
measures are not taken.
Recycle
3. Warning and safety information
Danger warnings3.1
Unless the machine has been isolated from the supply there will always be potential for mains
voltage to any components in the machine. (►8)
Warnings3.2
DO NOT run the machine if there is no salt in the salt reservoir, as this will allow lime scale to build
up, also any lime scale will invalidate your warranty.
DO NOT add any chemicals, such as detergent or rinse aid to the reservoir. These will cause
damage to the machine. (►7.5)
Cautions3.3
Only use granulated salt (max. grain size 5 –7 mm). Salt tablets are not suitable.
If the reservoir cap is not properly secured, water and/or chemicals can leak in or out of the unit
causing damage to the machine. (►7.5)
Repairs to the machine should only be done with the mains supply isolated. (►8)
Any changes made to P30 will not be saved if power to the machine is disrupted before completely
exiting service mode. (►8.2)

Engineers manual
Under counter machines
Page 4
4. Machine specifications
Systems matrix4.1
Below is a table describing the various systems available for the different machine types.
Machine
type
13A
(11A1)
28A
3 Phase
Rinse
booster
pump
WRAS
approved
air gap
Water
softener
Drain
pump
Gravity
drain
900002872
●
○
○
○
○
○
◐
●
900002883
●
○
○
○
○
○
◐
●
900002894
◐
●
◐
●
●
◐
●
◐
900002905
◐
●
◐
○
○
○
●
◐
900002916
◐
●
◐
●
●
◐
●
◐
●- Standard
◐- Optional
○–Not available
Mechanical specifications and site requirements4.2
For details on machine dimensions and site requirements refer to the “Installation and Operation
manual” for the machine.
Wiring4.3
For detailed wiring information refer to the relevant wiring diagram for the machine.
1
In machines with this as an option only 1 leg of the 6kW rinse element will be used.
2
G350
3
G400; D400
4
G400 DUO, D400 DUO, G400 DUO WS; D400 DUO WS
5
G500; D500
6
G500 DUO; D500DUO; G500DUO WS; D500 DUO WS

Engineers manual
Under counter machines
Page 5
Components4.4
The table below indicates the electrical components in the machines and their electrical
specifications
Component
Voltage
range (V)
Frequency
(Hz)
Current
(A)
Power (W)
Resistance (Ω)
Inlet solenoid
220-240
50/60
0.026
6
4110
Rinse
element
2600
220-240
50/60
5.65
2 x 1300
41.95
6000
8.68
3 x 2000
27.25
Rinse pump
Small7
220-240
50
0.45
100
M –41.9
A –67.6
220-240
60
0.47
105
M –39
A –56
Large
220-240
50
0.7
190
M –32.2
A –43.3
220-240
60
0.66
146
M –26.78
A –34.8
Wash element
220-240
50/60
8.7
2000
27.3
Wash pump
Small
220-240
50
1.2
250
M –22.76
A –54.1
220-240
60
1.25
255
M –17.3
A –42.1
Large8
220-240
50
2.55
580
M –9.52
A –18.97
220-240
60
2.42
550
M –8.06
A –16.11
Drain pump
220-240
50
0.2
30
145.1
208-240
60
0.15
32
76
Contactors
1 Pole9
220-240
50/60
0.005
1.2
11030
3 Pole10
220-240
50/60
0.006
1.3
6760
Detergent pump
220-240
50/60
0.03
8
3180
Rinse aid pump
220-240
50/60
0.03
8
3180
7
400mm machines only
8
500mm machines only
9
2600W rinse element machines only
10
6000W rinse element machines only

Engineers manual
Under counter machines
Page 6
4.4.1 Pump wiring
The windings of the wash and rinse pumps are wired to the plug as below:
4.4.2 Winding legend
Key
Description
M
Main winding
A
Auxiliary winding
PE
Earth wire (Green and Yellow)
BU
Blue wire
BK
Black wire

Engineers manual
Under counter machines
Page 7
5. Water paths
Pressurised system5.1

Engineers manual
Under counter machines
Page 8
Unpressurised system5.2

Engineers manual
Under counter machines
Page 9
Water softener system5.3

Engineers manual
Under counter machines
Page 10
Water softener unit5.4

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Under counter machines
Page 11
Water ways legend5.5
Key
Description
ISV
Inlet solenoid valve
LCV
Lateral check valve
AB
WRAS approved type AB air gap
RB
Rinse tank
RBP
Rinse booster pump
WP
Wash pump
DP
Drain pump
RA
Rinse arm
WA
Wash arm
WSU
Water softener unit
NRV
Non-return valve
ASU
Anti-syphon unit
SR
Salt reservoir
Res
Resin chamber
Solenoid valve
Paddle sensor
Ball valve
Air gap
Switching valve
Non return ball valve
BU
Incoming water
GR
Softened water
R
Rinse water
O
Wash water
GY
Waste water –Pumped drain
GY
Waste water –Gravity drain
P
Waste water –Water softener
O
Breather

Engineers manual
Under counter machines
Page 12
6. Logic
Indicator logic6.1
LED interface LCD interface
Item
Description
1
Heating indicator
2
Cycle indicator
6.1.1 Heating indicator
This will illuminate GREEN only when following condition is achieved:
Wash tank water level full
Rinse tank water level full
If one of these has not been achieved the indicator will flash AMBER to indicate that the machine
has not achieved these.
6.1.2 Cycle indicator
This will illuminate BLUE when a cycle has been requested. The cycle will then start when the
above interlock requirements have been achieved.
This will also flash BLUE during the drain process.
In certain serious error conditions (►7.6.5) this indicator will illuminate RED and the machine will
turn off.
1
2
1
2

Engineers manual
Under counter machines
Page 13
Fill and heat6.2
6.2.1 Pressurised fill and heat
Pressurised machines fill and rinse using the solenoid valve and site water pressure. These
machines will fill in the following manner:
1) Activate solenoid valve until the wash air pressure sensor reads a minimum level.
2) Heat the rinse tank to a specified transfer temperature; this is lower than the rinse
temperature to ensure that the wash tank is not too hot after the fill cycle.
3) Activate the solenoid valve to transfer water through the rinse tank to the wash tank for a
specified time.
4) Repeat steps 1 to 3 until the wash tank is full.
5) Once wash tank water level is achieved, GREEN lamp should illuminate.
6) In the background machine will continue to heat until the rinse boiler and wash tank have
both reached the specified temperatures.
Below is a flow diagram to represent this.

Engineers manual
Under counter machines
Page 14
6.2.2 Unpressurised fill and heat
Unpressurised (air gap) machines fill and rinse using a rinse booster pump; this means that the
rinse is not reliant on the incoming water pressure. These machines fill in the following manner:
1) Activate solenoid valve to fill rinse tank.
2) When rinse tank has reached the minimum level it will start to heat to a specified transfer
temperature; this is lower than the rinse temperature to ensure that the wash tank is not too
hot after the fill cycle.
3) Activate the rinse booster pump to transfer water for a specified time.
4) Repeat steps 1 to 3 until the wash tank is full.
5) Once the wash tank has reached a minimum level this will begin to heat if required while
the rinse tank is refilling.
6) On machines with water softeners fitted the machine will calculate the volume of water that
has passed through the unit and activate the regeneration process (►6.6) as required.
7) Once wash tank water level and Rinse tank water level is achieved, GREEN lamp will
illuminate.
8) In the background machine will continue to heat until the rinse boiler and wash tank have
both reached the specified temperatures.
Below is a flow diagram to represent this.

Engineers manual
Under counter machines
Page 15
Wash and rinse6.3
If a cycle is requested when the machine is in standby the wash and rinse, process on all
machines, follow the below procedure:
1) BLUE lamp is Illuminate on cycle indicator.
2) Starts the wash cycle with wash pump activated. Soft start runs i for first 6 seconds.
3) Once the wash tank and rinse tank has achieved the interlock temperature (P41&P51) and
the wash time has elapsed, Wash pump will be deactivated. If the interlock temperature are
not satisfied during wash cycle time than it will extend the wash cycle till it has achieved it.
4) There is a pause of 8 seconds to allow the wash tank water to drip down back in wash tank.
5) Completes the rinse cycle for the specified time (P60) with activation and deactivation of
Rinse pump.
6) There is a short pause after the rinse to allow water to drip down then the Cycle indicator
will turn off.
Below is a flow diagram to represent this.
Refer (►7.6.1) & (►7.6.2) for more information on Parameters P41 & P51 and interlock options.
Please note if condition for either P41 or P51 not met during specific wash cycle time than it will
extend the wash cycle time till it satisfies the conditions.

Engineers manual
Under counter machines
Page 16
Drain6.4
The drain of the machine functions in two ways:
1. It monitors the water level in the wash tank and drains away any excess water at any time.
2. If the machine is turned off and the drain cycle is selected, this function will follow the below
process:
a. Start draining the machine. BLUE lamp flashes to indicate drain cycle.
b. Once the water reaches the minimum level in the wash tank an “Assisted clean”
function will transfer water from the rinse boiler in the same fashion as it fills (►6.2)
while continuing to drain (If the door is open at this time the “Assisted clean” will be
cancelled).
c. Once the wash tank reaches a minimum level again it activates a timer to drain out
the remaining water.
Below is a flow diagram to represent this.

Engineers manual
Under counter machines
Page 17
Chemical dosing6.5
The machine doses chemical at two different stages:
1. While filling the machine:
a. The detergent is dosed into the wash tank with each transfer. At the end of the fill the
rinse aid is dosed into the rinse tank.
2. While cycling the machine:
a. When a cycle is selected the detergent will dose into the wash tank. This will not
occur on the first cycle after filling the machine.
b. After each cycle the rinse aid is dosed into the rinse boiler for the amount of water
used.
Water softener unit6.6
On machines with the integral water softener fitted the machine will monitor the amount of water
passing through the resin of the softener unit and regenerate at intervals required by the water
hardness setting (►7.5.3).
The regeneration process passes salt water into the resin, allows a contact period for the salt to
‘scrub’ the resin then flushes this salt water out the waste.
Re-fill salt indicator will flash to indicate water softener needs salt re-filling. Refer (►3.3) for
Salt specification and unit installation and operation manual for more information.
Below is the timing for this function of the water softener unit.
Function
Rinse
until resin
exhausted
Pause
Salt to
resin
Pause
Pressurise
Regen
(Contact)
Pause
Flush
Pause
Time
3s
25s
3s
1.5s
20s
3s
12s
3s
ISV (O8)
WS salt
valve
(O11)
WS
waste
valve
(O12)

Engineers manual
Under counter machines
Page 18
7. Commissioning/service modes
Commissioning/service interface7.1
Item
Description
1
Exit button
2
Enter button
3
Cycle indicator
4
Display
5
Up button
6
Down button
Commissioning mode7.2
With the machine turned on at the mains electrical supply but off at the display, press and hold the
Exit (1) and Enter (2) buttons for 3sec. the DISPLAY (4) will show the first menu item and the cycle
indicator (3) will illuminate red.
If no buttons have been pressed for a period of time the machine will cancel this mode and return
to the off state.
Below is the complete menu list.
Display
Description
Units
r**
Rinse aid setting (e.g. 15 = 1.5ml/L)
0.1 x ml/L
rP0
Rinse aid prime
0 = Off
1= On
d**
Detergent setting (e.g. 33 = 3.3ml/L)
0.1 x ml/L
dP0
Detergent prime
0 = Off
1= On
h**
Water softener setting (if fitted)
°dH
** Refers to the setting of the chemical dosing. For example the default setting for rinse aid is 1ml
of chemical per litre of water this will be displayed as ‘r10’the default setting for detergent is 3ml
of chemical per litre of water this will be displayed as ‘d30’
1
4
5
2
6
3
LED interface
1
4
5
2
6
3
LCD interface

Engineers manual
Under counter machines
Page 19
Setting chemical dosage7.3
1. Enter commissioning mode (►7.2).
2. Using the UP and DOWN keys (5& 6), scroll to the rinse aid setting menu item (r**) and
press ENTER (2).
3. The display will flash.
4. Use the UP and DOWN keys (5& 6) to scroll to the required setting and press ENTER (2).
5. Using the UP and DOWN keys (5& 6), scroll to the detergent setting menu item (d**) and
press ENTER (2).
6. The display will flash.
7. Use the UP and DOWN keys (5& 6) to scroll to the required setting and press ENTER (2).
8. Press EXIT (1) until you are out of commissioning mode.
Priming chemicals7.4
Before the machine can be used the chemical tubes will need to be filled with chemicals, in order
to do this you will need to follow the below instructions to prime the chemical pumps.
1. Enter commissioning mode (►7.2).
2. Using the UP and DOWN keys (5& 6), scroll to the rinse aid prime menu item (rP0) and
press ENTER (2)
3. The display will flash and will change to rP1.
4. This will continually run the rinse aid pump for a maximum of 12 minutes and draw
chemicals into the machine. When the chemicals have reached the back of the machine
press ENTER (2) again to stop the pump.
5. The display will stop flashing and return to rP0.
6. Using the UP and DOWN keys (5& 6), scroll to the detergent prime menu item (dP0) and
press ENTER (2)
7. The display will flash and will change to dP1.
8. This will continually run the detergent pump for a maximum of 2 minutes and draw
chemicals into the machine. When the chemicals have reached the back of the machine
press ENTER (2) again to stop the pump.
9. The display will stop flashing and return to dP0.
10.Press EXIT (1) until you are out of commissioning mode.
Integral water softener (if fitted)7.5
7.5.1 Commissioning the water softener unit
To commission the water softener unit follow the instructions below:
1. Open the door to the machine.
2. Remove the right hand basket ramp.
3. Open the salt reservoir cap at the back right hand corner of the wash tank.
4. Fill the reservoir with fresh water.
5. Using the salt funnel supplied fill the reservoir with approximately 1.5kg of granulated salt.
6. Wipe away any excess or spilt salt from the cabinet and the reservoir opening.
7. Refit the cap to the reservoir, ensure that the cap is fitted flat and secure.