Front Loading Utensil Washer Disinfector (WDF)
Operation, Maintenance and Installation Manual
Issue 1
Page
25
20/01/2022
9.4
Service Connections
The following service connections must be provided by the facility for installation of the device, services must comply with
the specifications as per this section of the manual to ensure correct and safe operation of the device. See the Service
Connection Layout Diagram 9.6 for details of device service connection points.
9.5
Plumbing
These installation guidelines must be followed to ensure the device will operate as intended.
Installations must be carried out by a qualified, licensed tradesperson.
Water Supply
– Note: Water Supply connections must comply with AS/NZS3500.1 and be Watermark Certified.
This device requires only a potable cold water connection; the water entry point is on the lower rear right hand
side of the device when viewed from the front. Please refer to the Service connection layout diagram for exact
location. A
back flow prevention device complying to AS 2845.1 is incorporated in the device.
Cold Water
– Note: See device specifications table for water quality requirements
Pressure:
100-500kPa
Temperature: 5-25°C
Nominal Flow: 10L/Min
Connection:
GB ¾” BSP
Note:
Old hose sets should not be re-used; it is recommended new compliant hose sets are used on
installation.
Waste Connection –
Note: Waste service connection must comply with AS/NZS3500.2
The device comes fitted with a 2m drain hose, with a 22mm outlet designed to fit a standard sink trap spigot,
and is high temperature rated. Do not install waste into an open sink as hot water may pose a burn risk to
personnel. Ensure waste connection is rated for temperatures of not less than 90°C.
Venting
No external vent pipe work is required as the device is designed to condensate all visible steam internally.
9.5
Electrical
These installation guidelines must be followed to ensure the device will operate as intended and must be carried out by
a qualified, licensed electrical tradesperson. The device must be installed and serviced to national wiring rules AS/NZS
3000
.
Model:
WDF
3 Phase
415V 50Hz
20Amp
Overcurrent protection device: A 20A circuit breaker or fuse must be installed in the building installation for
the device.
Devices are supplied with 2000mm power supply cord extending from the bottom rear of the device for hard wiring into
Mains ISO switch. Position switch approx. 1500mm above floor level.
An ISO switch or circuit breaker must be included in the installation (not supplied by Malmet).
Mains power ISO switch must be suitably located and easily reached, approximately 1500mm above floor level adjacent
to device. The 2.0m mains power lead exits the device approximately 50mm above floor level on the left hand side of the
device (when viewed from the rear).
Mains ISO switch must be marked as the disconnecting device for the equipment.
Mains ISO switch must have contact disconnection of all poles to provide full disconnection.
Mains ISO switch must be suitably placed so device will not obstruct safe access to the isolator once installed.
Ensure isolator is suitably placed so device will not obstruct safe access to the isolator once installed.
Device must be earthed.
Malmet recommends having a 30mA RCD in the mains supply fixed wiring.
If the supply cord is damaged, it shall be replaced by the manufacturer or its service agent or similarly qualified person in
order to avoid any potential hazard.
