Hobart UX-30 EH, UX-30 ESH, UX-30 EB, UX-30 E, UX-30 ES Installation And Operating Instructions Manual

Utensil Washing Machine

UX-30 EH / UX-30 ESH

INSTALLATION OPERATION

VERSION 23/11/99

Installation and Operation Instructions

for HOBART Utensil Washing Machine

Model UX-30 EH / UX-30 ESH

Content Page

1 Installation............................................................................................. 3

2 Connections .......................................................................................... 3

3 Controls................................................................................................. 6

4 First run................................................................................................. 7

5 Adjustment of detergent concentration ................................................. 8

6 Adjustment of rinse agent concentration............................................... 8

7 Softener ................................................................................................ 9

8 Operation ............................................................................................ 10

9 Cleaning the machine ......................................................................... 11

10 Frost prevention .................................................................................. 12

11 Maintenance ....................................................................................... 12

12 Trouble shooting.................................................................................. 13

Machine noise level is ≤ 70 dB (A)

Important Notes

● Use in Accordance with Regulations

Hobart Utensil Washing Machines are only intended for cleaning pots
and pans, baking sheets, 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 150 mm is required.
– Level machine by turning the feet.
– Distribute machine weight equally onto all feet.

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2 Connections

2.1 Electrical connection

Must be carried out by an authorized technician
according to the national and local codes.

– The appliance is intended for a fixed electrical connection.

Main-switch is required according EN 60 204.

– 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 an

equipotential conductor. The connecting screw is located beside
the cable inlet.

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2.2 Water connection

Must be carried out by an authorized technician
according to the national and local codes.

The machine must be operated with water of drinking quality.
For water with an extremely high mineral content, water
treatment is recommended.

Machines without Softener:

(U.K. only: this machines are fitted with Class "A" Air Gap.)
– Connection if possible to soft (4° Clark) and warm (max. 60°C)

water.

– Line flow pressure 0.4 – 6 bar.

If line flow pressure is below 0.4 bar: provide rinse booster

pump at site.

Machines with Softener (S-models only):
For U.K. see separate infor mation*.

– Connection if possible to warm water (max. 60°C).
– Line flow pressure 1.5 – 6 bar.

If line flow pressure is below 1.5 bar: provide rinse booster

pump at site.

If line flow pressure is above 6 bar: provide a pressure
reducing valve.

– Connect flexible supply hose with union nut 3/4" to site

connection.

– Fit shut-off valve.

* U.K. only: Machines with softener
All United Kingdom installations must be supplied from

storage not mains. Direct connections to the mains supply
contravenes Water Authority regulations.

– Connection if possible to warm water.

The supply water temperature into the machine should not
exceed 60°C.
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.

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.

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2.3 Hot water connection

(hot-water heated machines only)

Must be carried out by an authorized technician
according to the national and local codes.

– Connection to hot water supply (DN 20) on customer site

PN 25 (110°C - 200°C). See data plate !
– The machine is equipped with all necessary fittings.
– Dimension of hot water flow and return piping has to be

according to the requirements.
– Make sure that permissible pressures and temperatures will not

be exceeded.
– All pipework has to be insulated with water and heat resistant

material.

2.4 Steam connection

(steam heated machines only)

Must be carried out by an authorized technician
according to the national and local codes.

– Connection to steam supply (DN 20) at customer site

0.3 - 3.5 bar (max. 150°C) or 3.5 - 10 bar (max. 200°C).

See data plate !
– Dimension of steam and condensate piping has to be according

to the requirements.

– The machine is equipped with all necessary fittings.
– Make sure that permissible pressures and temperatures will not

be exceeded.
– All pipework has to be insulated with water and heat resistant

material.

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2.5 Adjustment of shut-off valve with flow reducer for
steam and hot water supply

– The built-in shut-off valve is equipped with an adjustment device

(A) to limit the heating supply medium.
A special tool is necessary for adjusting the valve-seat.

– The correct adjustment is very important particulary for higher

pressure, and therefore must be done by a HOBART trained
service man at first installation or after any changes are done
at the customer site.

– The adjustment is correct if the heating-up time of the boiler is

as long as the shortest wash cycle, while the valve is opened to
maximum.

– If adjusted too far open pressure shocks may occur when the

solenoid valve closes. This could cause damage at the installation.
If adjusted too far close the required heating-power cannot be
achieved.

2.6 Drain connection

– Connection between machine and site drain must not exceed

max. height of drain pump lift of 0.8 m.

– Do not kink drain hose.

max. 0,8 m

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