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REFCO AcquSwitch User Manual

Specification, Description, Safety first

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HVAC/R

Service Products

REFCO Manufacturing Ltd.

Telefon +41 41 919 72 82

Industriestrasse 11

Telefax +41 41 919 72 83

CH-6285 Hitzkirch (Switzerland)

[email protected] www.refco.ch

INSTALLATION OPERATION
AND MAINTENANCE GUIDE

AQUASWITCH

SPECIFICATION

Power Supply

90 – 254 V, 50/60 Hz

24V AC/DC

Switching capacity

5A 250VAC 1250VA

Operating Temperature

Air

0–70°C (32–158°F)

Water 0–50°C (32–122°F)

Switch On/Off Level

ON: 10mm typical

6mm min., 14mm max.

Hysteresis

2mm

Delay on level fall

3 seconds as standard

Marker on cable denotes any other time delay

Protection

IPX7

DESCRIPTION

The AquaSwitch is a rising water liquid level detector. Its solid state elect-

ronic sensing is not effected by oil film, metal trays, nor by slightly off the

vertical mounting position. The small footprint (4 x 5 cm) and the low swit-

ching level means that the AquaSwitch may be mounted in the smallest

of reservoirs. The in-built isolated relay switches loads up to 1250VA. This

allows the user to select the AquaSwitch to directly switch pumps and sole-

noids or interface into other control circuits. The built-in Delay to off timer

may be used to allow water being drained or pumped to be fully vacated or

just to prevent nuisance switching.

SAFETY FIRST

Disconnect all power supplies before starting installation or maintenance

work. The interconnecting conductors and connections are to be confined

within the host equipment. All wiring and connections are for internal in-

stallation only. This product must be installed only by competent engineers.

There are no user serviceable parts in this control. Do not use if damaged in

any way. Check the label to ensure this product is the correct voltage.

INSTALLATION

The AquaSwitch is intended to detect rising condensate water levels in A/

C and Refrigeration applications. It may also be used in Reservoir Top-Up

or High Level Alarm applications. The AquaSwitch is a semi-submersible

switch therefore it must not be used in application where it will be perma-

nently submerged or for long extended periods. It is not recommended to

use it as a low level switch. The AquaSwitch may be used in metal or plastic

collection trays. When positioning, ensure that there is 8 mm of clearance in

front and 5 mm below the sensing pads. The AquaSwitch will operate tilted

in any direction from the normal by up to 45° however for reliable operation

position the AquaSwitch flat and level. Tray depth must be at least 17 mm

to prevent overflowing.