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HX-30/40 and HX-30/40 S
Glass and Dishwashers
INSTALLATION OPERATION
VERSION 18/01/00
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2
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Installation and Operation Instructions
for Model HX-30/40 and
HX-30/40 S (with built-in softener)
Content Page
1 Installation............................................................................................. 4
2 Connections .......................................................................................... 4
3 Controls................................................................................................. 6
4 First run................................................................................................. 7
5 Dispensers ...................................................................................... 8, 10
6 Softener (HX-30/40 S only)............................................................ 9, 11
7 Operation ............................................................................................ 12
8 Cleaning.............................................................................................. 13
9 Frost prevention .................................................................................. 14
10 Maintenance ....................................................................................... 14
11 Trouble shooting guide......................................................................... 15
Machine noise level is ≤ 70 dB (A)
Important Notes
● Use in Accordance with Regulations
This machine is exclusively to be used to wash ware such as plates,
cups, glasses, cutlery, trays etc.
Do not use for electrically heated cooking and heat conservation
appliances.
● Safety
Never hose down the machine.
The "Attention" symbol is shown beside instructions that are essential
for the safe operation of the machine. Please read these passages
very thoroughly.
● Liability
Installations and repairs which are not carried out by authorized
technicians or the use of other than original spare parts, and any
technical alterations to the machine, may affect the warranty set
out in the standard conditions of sale.
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1 Installation
1.1 Location
– Wall clearance of 100 mm is required.
– Level machine by turning the feet.
– Distribute machine weight equally onto all feet.
B
A
1.2 Converting to corner version
– Open the hood, unscrew guide rail A and fix it to position B.
– To set the tables see installation plan.
2 Connections
2.1 Electrical connection
must be carried out by an authorized technician
according to the local and national codes.
– Set main circuit breaker.
– Check machine specifications to make sure they correspond to
those of the site supply and to wiring diagram.
– Check site fuse rating.
According to EN 60 335 the appliance must be connected to a
equipotential conductor. The connecting screw is located beside
the cable inlet.
2
1
S
HX-30/40
All machines must be operated
with water of drinking quality.
For water with an extremely high
mineral content, water treatment
is recommended.
2.2 Water connection (HX-30/40)
– If possible to soft and warm water (4° Clark, max. 60°C).
– Line flow pressure 0.6 – 6 bar.
If line flow pressure is less than 0.7 bar:
(must be carried out by an authorized technician)
– Switch Off machine.
– Remove front panel.
– Unscrew panel with electrical parts.
– Disconnect the water supply hose from water inlet valve.
– T ake a way the sie ve (S) and remov e the diaphragm (see drawing).
– Replace the sieve and reconnect supply hose.
– If line flow pressure is above 6 bar pro vide pressure reducer .
– Connect flexible supply hose with union nut 3/4" to site connection.
– Fit shut-off valve.
Water connection (HX-30/40 S)
For U.K. see following page.
– If possible to warm water (max. 60°C).
– Machine is provided for flow pressure 1.4 – 6 bar as standard.
– If flow pressure is below 1.4 bar, please contact the HOBART
service.
– If flow pressure exceeds 6 bar, pressure reducer is required.
– Connect flexible supply hose with union nut 3/4" to site connection.
– Fit shut-off valve.
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Water connection (HX-30/40 S) only for U.K.
All United Kingdom installations must be supplied from
storage not mains.
Direct connections to the mains supply contravenes Water
Authority Regulations.
– Connect if possible to warm water.
The supply water temperature should not exceed 60°C into the
machine.
For temperatures in excess of 60°C, a thermostatic mixing valve
should be fitted at installation. This valve is available from
HOBART Service Centres.
– Fit shut-off valve.
LOW PRESSURE SITUATIONS
Below 0.4 bar (6 psi) flow pressure there are two solutions.
a) Provide a suitable water storage tank at a height which will
create a pressure in excess of 0.4 bar or,
b) fit a water pump to increase the pressure.
A suitable pump can be supplied by HOBART at extra cost.
max. 1 m
MEDIUM PRESSURE SITUATIONS
0.4 – 0.7 bar (6-10 psi) flow pressure.
– Most installations will fall into this category and the machine will
arrive fitted with a solenoid valve designed for this pressure
range.
HIGH PRESSURE SITUATIONS
Above 0.7 bar flow pressure.
a) Fit a water storage tank at a suitable height.
b) Fit a pressure reducing valve during installation.
2.3 Drain Connection
– Connect to trapped drain line.
– Connection between machine and site drain may not exceed
max. height of drain pump lift of 1 m.
– Do not kink drain hose.
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3 Controls
2
1
3
1. Thermometer Wash (50-60°C)
2. Thermometer Rinse (70-80°C)
3. Detergent dispenser pilot light (if installed)
456
789
10
11
12
13
4. Programme pilot light
5. Pilot light Regeneration (HX-30/40 S only)
6. Pilot light Machine ON
SELECTOR SWITCH:
HX-30 / HX-30 S HX-40 / HX-40 S
7. 180 sec. 180 sec. normal programme
8. 120 sec. 90 sec. light duty programme
9. 240 sec. 240 sec. heavy duty programme
10. Machine OFF
11. Filling
12. Tank drain
13. Regeneration (HX-30/40 S only)
To reach hygienic rinse temperatures even with cold water connection or reduced heating power,
the actual cycle times extend accordingly.
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4 First Run
4.1 Fill rinse booster heater
– Set programme switch to lower position (opposite to "0").
– Open shut-off valve.
– Switch on main circuit breaker.
– Pilot light machine ON illuminates.
– Close the hood.
– Programme pilot light illuminates.
– Filling starts.
– After approx. 2 minutes the rinse booster heater is filled.
– Set programme switch to "0".
4.2 Tank fill
– Open the hood.
– Set selector switch to fill position.
– Close the hood.
The programme pilot light illuminates and fill starts.
– When pilot light goes off, tank fill is completed.
4.3 Test cycle
– Open the hood.
– Set programme switch to light duty position.
– Close the hood.
The programme pilot light illuminates, cycle starts.
Check:
– Open hood and check if upper and lower wash and rinse arms
rotate smoothly.
– Check and eliminate any leakages of supply and drain
pipework.
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ATTENTION
For machines manufactured prior March 2000 the adjustment of
detergent, rinse agent and softener is to be done according to the
instructions on page 10 and 11.
5 Dispensers (March 2000 onwards)
5.1 Filling the containers
Rinse agent:
– Put suction hose (blue) into rinse agent container.
Detergent:
Important !
Do not use any acidic detergent products with the built-in
detergent pump.
– Put suction hose (white) into detergent container.
NOTE: Run machine 3 to 4 cycles until suction hose is filled.
Use only commercial detergent and rinse agent.
Please pay attention to the manufacturers safety
rules and instructions.
5.2 Adjustment
– Switch off the machine.
– Switch off main circuit breaker.
– Remove front panel and open the switch box cover.
– Adjust the rinse agent and detergent concentration by turning
the rotary switches on electronic board (behind the cover).
– Turn the rotary switches clockwise to increase the dosage and
counterclockwise to decrease.
(Only position 0 to 7 are used. Position 8 and 9 are not utilized.)
rinse agent
detergent
Each time the dosage is changed, switch off the machine
(set the selector switch to "0") in order to activate the new
dosage time.
8
7
6
5
4
3
8
7
9
6
0
5
1
4
2
3
8
7
9
2
9
6
0
1
0
5
1
4
2
3
– The dispensers are factory set to medium position.
Ask your rinse agent and detergent supplier concerning an
optimum adjustment for quantity.
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softener
6 Softener (HX-30/40 S only) (March 2000 onwards)
6.1 Adjustment of water hardness
– Switch off the machine.
– Switch off main circuit breaker.
– Remove front panel and open the switch box cover.
Adjust the softener according to schedule by turning the rotary
switch on electronic board (behind the cover).
(Only position 0 to 2 are used. Position 3 to 9 are not utilized.)
Position Water Water quantity until Rack quantity until
hardness next regeneration next regeneration
0 7-12° clark 1300 Ltr. approx. 370 racks
1 13-24° clark 650 Ltr. approx. 185 racks
2 25-36° clark 430 Ltr. approx. 122 racks
8
7
6
5
4
3
8
7
9
6
0
5
1
4
2
3
8
7
9
2
9
6
0
1
0
5
1
4
2
3
– To ascertain water hardness level, ask local water authority.
– The softener is factory set to position 2.
6.2 Regeneration
(When the machine is delivered, the softener is already
regenerated.)
– When the regeneration pilot light blinks (with hood closed)
indicating that salt is required, open the hood and set
programme switch to regeneration position.
– Close the hood. The regeneration pilot light illuminates
permanently and the tank will be drained.
– As soon as the pilot light starts blinking again, open the hood.
– Unscrew the softener lid.
– Fill dispenser with 1 kg powdered salt (salt tablets are not
recommended). Clean seal and rim of softener lid and border
carefully before closing the lid.
– Close lid and tighten.
IMPORTANT: Only fill with salt just before starting the
regeneration programme.
– Close the hood.
– Regeneration pilot light illuminates permanently and also the
programme pilot light.
– The regeneration cycle starts (duration approx. 45 minutes).
Do not open the hood during cycle is running.
– When the programme pilot light goes off, the regeneration is
finished.
– Set programme switch to "0".
NOTE:
The regeneration can even be done, when pilot lamp does not
blink (e.g. at the end of the day before leaving).
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ATTENTION
For machines manufactured March 2000 onwards the adjustment
of detergent, rinse agent and softener is to be done according to the
instructions on page 8 and 9.
5a Dispensers (prior March 2000)
5.1a Filling the containers
Rinse agent:
– Put suction hose (blue) into rinse agent container.
Detergent:
Important !
Do not use any acidic detergent products with the built-in
detergent pump.
– Put suction hose (white) into detergent container.
NOTE: Run machine 3 to 4 cycles until suction hose is filled.
rinse agent
detergent
Use only commercial detergent and rinse agent.
Please pay attention to the manufacturers safety
rules and instructions.
5.2a Adjustment
– Set selector switch to OFF position.
– Switch off main circuit breaker.
– Open the switch box cover.
– Adjustment of rinse agent quantity at the top potentiometer,
adjustment of detergent quantity at the bottom potentiometer
behind the cover.
– Turn to right: increase dosage.
– Turn to left: decrease dosage.
– The dispensers are factory set to medium position.
Ask your rinse agent and detergent supplier concerning an
optimum adjustment of the quantity.
– Close panel after adjustment.
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6a Softener (HX-30/40 S only) (prior March 2000)
6.1a Adjustment of water hardness
A
A
– Switch OFF machine.
– Remove front panel.
Adjustment of softener by screw A behind the front panel according
to schedule.
Position Water Water quantity until Rack quantity until
hardness next regeneration next regeneration
1 7-12° clark 1300 Ltr. approx. 370 racks
3
2
1
2 13-24° clark 650 Ltr. approx. 185 racks
3 25-36° clark 430 Ltr. approx. 122 racks
– To ascertain water hardness level, ask local water authority.
– The softener is factory set to position 3.
6.2a Regeneration
(When the machine is delivered, the softener is already
regenerated.)
– When regeneration pilot light blinks (indicating that salt is
required), set programme switch to drain position.
– When the tank is drained, open the hood.
– Unscrew the softener lid.
– Fill dispenser with 1 kg powdered salt (salt tablets are not
recommended). Clean seal and rim of softener lid and border
carefully before closing the lid.
– Close lid and tighten.
IMPORTANT: Only fill with salt just before starting the
regeneration programme.
– Set programme switch to regeneration position and close hood.
The regeneration pilot light illuminates permanently, cycle is
running.
ATTENTION:
Do not open the hood during regeneration.
– After approx. 45 minutes the regeneration pilot light goes off,
the regeneration is finished.
– Open the hood and set programme switch to fill position.
– Close the hood.
– After filling, the machine is ready for operation.
Select a washing programme.
NOTE:
The regeneration can even be done, when pilot lamp does not blink
(for instance at the end of the day before leaving).
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7 Operation
7.1 Preparation
Check correct position of wash and Check fill level of detergent and Close the hood, set programme
rinse arms and strainer. rinse agent containers. switch to fill position.
Open shut-off valve and switch Do not run the dosing pumps for
on main circuit breaker. long periods without a liquid in the
containers.
Place glasses and cups with the Remove coarse food soil before Spray off greasy food soil.
opening facing downwards into loading plates into rack.
racks.
7.2 Racking
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7.3 Washing
for normal
soiled dishes
for glasses
when food soil
is dried-on
Select programme. Put rack into the machine and When programme pilot light goes
close the hood. off, open hood and take out rack.
Cycle is running, programme pilot Allow dishes to dry for 1 min. approx.
light illuminates.
8 Cleaning the machine (daily)
NOTE:
During the drain cycle, the
interior of the machine is
cleaned automatically.
A final inspection is
recommended.
Set programme switch to drain When programme pilot light goes Open the hood, take out and clean
position and close the hood. off, switch OFF machine. strainers.
Programme pilot light illuminates, Switch off main circuit breaker
drain cycle is running. and close shut-off valve.
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Flush fine strainer. Put strainers back into place.
Leave the hood open for ventilation.
If required:
B
A
Take out wash and rinse arms. Open plugs of wash and rinse arms
Use the side of the fine strainer (B) and flush.
as a spanner to loosen the
hexagon screw (A) by turning it
counter-clockwise.
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9 Frost prevention
In case of frost or longer operation pauses (e.g. for seasonal
operations) the machine must be completely drained.
This should be carried out by HOBART after sales service.
Please contact your local HOBART Office.
Reset for operation according to chapter 4.
10 Maintenance
For trouble free operation we recommend you enter into a
service contract with your local HOBART Service Office.
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11 Trouble shooting guide
TYPE OF FAILURE POSSIBLE CAUSE REMEDY
Poor wash result
Dishes are not clean. Wash arms stiff (you should be able Take out wash arms and clean them thoroughly.
to turn them easily by hand). Check water outlet from machine to wash arms is
clear.
Wash arm nozzles are clogged Take out wash arm, remove cleaning cap and
(visual check). rinse wash arm thoroughly until soil is removed.
Replace correctly.
Rinse arm nozzles are clogged Remove rinse arms and decalcify them in
(generally through lime deposit). separate container.
Detergent concentration is too low or Check setting of detergent concentration
too high. (usually on 4).
See also operating instructions point 5.
Coarse strainer soiled. Take out strainer, empty and clean it.
Fine strainer soiled or obstructed Take out fine strainer. If heavily soiled soak in a
through lime. vinegar solution. Then clean it thoroughly until
the pores are free.
Cleaning is to be done daily (see operating
instructions).
Wrong programme selected for heavily Select programme with longer wash cycle.
soiled dishes.
Dishes or glasses do not Rinse aid concentration too low. Increase concentration (see operating
dry properly. instructions).
Fat poorly dissolved. 1. Detergent concentration too low: increase.
(see instructions).
2. Check if detergent is appropriate, if not choose
a stronger one.
3. Drain soiled water and refill machine.
Check pre-scrapping procedure.
Rack is not suitable for type of dishes Use appropriate racks to create a sloping position
(sloping). which allows water to drain away from cavities.
Dishes stay too long in the machine Take out dishes as soon as cycle is completed
at the end of programme. to enable them to dry.
Stripes and stains on Rinse aid concentration too high. Reduce quantity (see instructions).
dishes or glasses.
Hard water or high mineral content. Check water quality.
Obtain details from local water authority.
Recommended values:
Ideal degree of hardness is 4° Clark.
Ideal conductivity value for glasses is max.
150 µS/cm and for dishes max. 400 µS/cm.
Rack is not suitable for type of dishes Use appropriate racks to create a sloping position
(sloping). which allows water to drain away from cavities.
Insufficient rinse aid concentration Increase quantity (see instructions).
causes stains.
Machine with softener:
use of wrong type of salt (too coarse). Use only fine salt.
Machine with softener:
salt container is full although softening Only fill with salt just before regeneration
does not take place. programme will be activated.
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TYPE OF FAILURE POSSIBLE CAUSE REMEDY
Softener malfunctions
(only applicable to machine
with softener)
Lime deposit in the Regeneration call was "ignored" i.e. Run regeneration programme 2–3 times
machine. the machine went on washing when (refill salt container every time).
regeneration was needed. If required: decalcify the machine.
Strainer in water supply pipe clogged Clean it. If necessary replace with heavy duty
(in site tap). filter (available as accessory).
Salt container not tight. During filling, salt was split onto Open softener lid, remove salt with a cloth and
the edge and not removed. close lid tightly.
Other malfunctions
Glasses are totally or Surface of glasses is rough and This is not caused by a malfunction on the
partially cloudy. porous, this is called glass corrosion. machine. Replace with new glasses.
Glasses are coated with a mineral Consult your detergent supplier.
deposit.
Glass breakages. Use of inappropriate dish or glass Use appropriate racks.
racks.
Machine suddenly stops Machine is connected to a "maximum Connect machine separately (call electrician).
during wash programme. power supply unit" which cuts out the
energy consumer at a given point, or
machine is interlocked with another
energy consumer unit.
Blown site fuse. Check site fuses.
As continued product improvement is a policy of HOBART, specifications are subject to change without notice.
Printed in Germany AG-20513-D-01-00-PC
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