Danfoss Liquid level switch Type AKS 38 Float level switch motel 148H3194 product introduction

AKS 38 is an electro-mechanical liquid level switch designed to provide a reliable, electro-mechanical response to liquid level changes.The simple and basic design ensures long lifetime performance and reliable operation for

many applications. AKS 38 can control liquid level in vessels and accumulators or can be used as a low / high level alarm.

Danfoss Liquid level switch Type AKS 38 Float level switch motel 148H3194 Features

• Based on Danfoss liquid level switch type 38E

• DIN, ANSI and FPT / NPT flanges

• The switch box can be placed in any position on top of float housing for ease of installation.

• Adjustable liquid level differential switch point.

• Electric magnetic microswitch, mechanically activated.

• The complete switch box can easily be replaced without any interference with the refrigeration system.

• Switch box supplied with a DIN plug for easy installation and service.

• Flanges included.

• Classification: DNV, CRN, BV, EAC etc.

To get an updated list of certification on the products please contact your local Danfoss Sales Company.

Danfoss Liquid level switch Type AKS 38 Float level switch motel 148H3194 Technical data

• Refrigerants

Applicable to HCFC, non flammable HFC and

R717 (Ammonia).

Flammable hydrocarbons are not

recommended.

•  Temperature range

-50 – 65 °C / -58 – 149 °F

• Pressure range

AKS 38 is designed for a max. working pressure

of 28 bar g / 406 psi g

• Material

Float housing: 

Cast Iron, zinc chromated,

EN-GJS-400-18-LT

Floats housing bolts: 

Stainless steel

A2-70 (DIN 267-11) / ASTM A-276

Flanges:

P285QH

EN 10222-4 / ASTM A350

Flange gasket:

Fiber, non asbestos

Pressure tube:

Stainless steel

X5CrNi18-10, EN 10088 / AISI 304, A276

O-ring: 

Neoprene (Cloroprene)

Gasket between pressure tube and housing

Aluminium

Electrical switch box: 

Shock resistant polycarbonate

CT-661-T

• Electrical data

- Change over Micro (SPDT) switch

250 V AC / 10 A

30 V DC / 5 A

Normally Open (NO) and Normally Closed

(NC) function

- DIN Plug

DIN 43650 connection

PG 11, 8 – 10 mm / 0.31 – 0.39”

Screw terminal 1.5 mm 2 (16 AWG)

3+PE

• Liquid level differential

Variable between 12.5 mm to 50 mm

(½" to 2") in 12.5 mm (½") increments. Required

diffferential setting should be made prior to

installation.

Factory set at 50 mm (2").

• Enclosure

IP 65

• Weight (including flanges)

9.75 kg / 21.5 lb

• Approvals

CE – for further details please see instruction.

Danfoss Liquid level switch Type AKS 38 Float level switch motel 148H3194 Design

AKS 38 is an electro-mechanical liquid levelswitch.The design is based on a mechanical float, which will operate in the refrigerant. When the set level is reached an electrical volt free micro (SPDT) switch will be activated. The microswitch is located in the switch box which has a clear front cover and allows viewing of the switch position. The micro- switch is fully isolated from the refrigeration system and operates by means of a magnet.AKS 38 is supplied with a DIN plug for the electrical connections. The microswitch provides volt free contacts to open / close solenoid valves or energise / de-energise contactors for the starting / stopping refrigerant pumps /compressors. Can be used as a device for acoustic alarms /switches for visual indication when there is a danger of high or low liquid level. The switch box can be placed in any position on

top of the float housing for easy installation and can be replaced without any interference with the refrigeration system.Flanges are included.