Eliwell EZ-HT, EZ-MT, EZ-LT User Manual

EZ-HT / EZ-MT / EZ-LT

EN

Electronic controllers for refrigeration units

EZ-HT / EZ-MT / EZ-LT USER INTERFACE

UP
Press and release

• Scroll menu items

• Increases values

Press for at least 5 sec

• Activates the Manual Defrost function

DOWN
Press and release

• Scroll menu items

• Decrease values

Press for at least 5 sec

• Function can be configured

by the user (par. H32)

KEYS

STAND-BY (ESC) - ON/OFF
Press and release

• Returns to the previous menu level

• Confirms parameter value

Press for at least 5 sec

• Activates the Standby function (when outside the
menus)

SET (ENTER)
Press and release

• Displays alarms (if active)

• Opens Machine Status menu

Press for at least 5 sec

• Opens Programming menu

• Confirm commands

Reduced SET / Economy LED

Flashing: reduced set active
Off: otherwise

LEDS

Fans LED

Permanently on: fans active
Off: otherwise

Compressor LED

Permanently on: compressor active
Flashing: delay, protection or activation

Off: otherwise

Allarm LED

Permanently on: alarm active
Flashing: alarm acknowledged
Off: otherwise

°C LED

Permanently on: °C setting (dro = 0)
Off: otherwise

blocked

Defrost LED

Permanently on: defrost active
Flashing: activated manually or from DI.
Off: otherwise

°F LED

Permanently on: °F setting (dro = 1)
Off: otherwise

NOT USED

The device is designed for panel mounting. Drill a 71x29 mm (2.80x1.14 in.) hole and insert the instrument; secure it with the special brackets

35 mm - 1.38 in.

59 mm - 2.32 in.

provided. Do not install the device in places subject to high humidity and/or dirt; it is intended for use in sites with ordinary class of pollution.
Keep the area around the instrument cooling slots adequately ventilated.

70 mm - 2.75 in.

29 mm

MOUNTING - DIMENSIONS

1.14 in.

71 mm - 2.80 in.

76.4 mm - 3.01 in.

ELECTRICAL CONNECTIONS

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

• Disconnect all power from all equipment including connected devices, prior to removing any covers or doors, or installing or
removing any accessories, hardware, cables, or wires.

• Always use a properly rated voltage sensing device to confirm the power is off where and when indicated.

• Replace and secure all covers, accessories, hardware, cables and wires.

• Check the earthing connections on all earthed devices.

• Use only the specified voltage when operating this device and any associated products.

Failure to follow these instructions will result in death or serious injury.

DANGER

LOOSE WIRING CAUSES ELECTRIC SHOCK

Tighten connections in conformance with the torque specifications.

Failure to follow these instructions will result in death or serious injury.

The table below displays the type and the size of cables for disconnectable terminals with pitch 5.00 mm (0.197 in.) or 5.08 mm (0.2 in.).

7

mm

0.28

in.

2

mm

AWG

Ø 3.5 mm (0.14 in.)

0.2…2.5

24…13

0.2…2.5

24…13

C

0.25…2.5

22...13

N•m

lb-in

0.25…2.5

22...13

0.5...0.6

4.42...5.31

2 x 0.2…1

2 x 24…18

2 x 0.2…1.5

2 x 24…16

2 x 0.25…1

2 x 22…18

2 x 0.5...1.5

2 x 20...16

DANGER

POTENTIAL OF OVERHEATING AND FIRE

• Do not use with loads other than those indicated in the technical specification.

• Do not exceed the maximum permitted current; for higher loads, use a contactor with sufficient power capacity.

Failure to follow these instructions will result in death or serious injury.

This device has been designed to operate outside of any dangerous location.
Only install this device in zones known to be free of hazardous atmosphere.

DANGER

POTENTIAL FOR EXPLOSION

Install and use this equipment in non-hazardous locations only.

Failure to follow these instructions will result in death or serious injury.

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel.
No responsibility is assumed by Eliwell for any consequences arising out of the use of this material.

WARNING

UNINTENDED EQUIPMENT OPERATION

• Use appropriate safety interlocks where personnel and/or equipment hazards exist.

• Install and operate this equipment in an enclosure appropriately rated for its intended environment.

• Power line and output circuits must be wired and fused in compliance with local and national regulatory requirements for the rated
current and voltage of the particular equipment.

• Do not use this equipment in safety-critical machine functions.

• Do not disassemble, repair, or modify this equipment.

• Do not mount devices in extremely damp and/or dirt-laden areas.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

UNINTENDED EQUIPMENT OPERATION DUE TO CONNECTION

Signal leads (probes, digital inputs, communication and the signal electronic supply) must be routed separately from power and supply
cables.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Probes have no connection polarity and can be extended using a regular bipolar cable (note that the extension of the probes affects the EMC
electromagnetic compatibility of the instrument: pay extreme attention to wiring).