Bedienungsanleitung REMKO KWG750 (Seite 33 von 60) (Englisch)

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Electrical components

Electrical components and

safety equipment

Pressure monitor for cooling cir-

cuit HP and LP

Within the cooling circuit, a high-

pressure monitor (HP) is located in

the hot gas line for the deactiva-

tion of the chiller in case of a lack-

ing heat dissipation.

A low-pressure monitor (LP) in the

suction line or compressor is used

to deactivate the chiller if the ﬁlling

amount of refrigerant is too low.

Connection of a cabled

remote control (accessory)

The cabled remote control is used

to query and program or operate

the unit from a remote position.

For this purpose, use the corre-

sponding mounting instructions.

Connection of an anti-frost

protection medium heater

(accessory)

The anti-frost protection medium

heater permits a unit operation

even without a percentage of

glycol at low ambient temperatures

up to a maximum of -10°C. It is

installed at the factory and cannot

be retroﬁtted.

For operation, use the correspond-

ing mounting instructions.

Connection of a winter fan

control (accessory)

The winter fan control is used

to expand the operating range

in cooling mode from +15°C to

-15°C. The set consists of a crank-

case heater, speed control of the

fans, and pressure control. For this

purpose, use the corresponding

mounting instructions.

For units with a free-cooling func-

tion, it is installed at the factory.

Connection of an external

circulation pump (on-site ac-

cessory)

The KWG and KWP unit series is

intended for an on-site circulation

pump. The connection must be es-

tablished according to the electrical

wiring diagram.

The medium-side volume ﬂow rate

must be achieved as otherwise the

differential pressure monitor / ﬂow

monitor does not grant an enable.

Switchover valve of EV cooling

circuit

(only units with heat pump func-

tion)

The switchover valve enables the

switchover of the cooling circuit

to change the cooling and heating

modes.

Pressure transducer in the cooling

circuit

High pressure RPT

The pressure transducer is located

in the hot gas line of the cool-

ing circuit. It is used to record the

current condensation pressure to

regulate the fan using the con-

troller. The currently measured

pressure is displayed under CdP1

(circuit 1) and CdP2 (circuit 2).

Pressure transducer in the cooling

circuit

Low pressure RPT

The pressure transducer is located

in the suction line of the cool-

ing circuit. It is used to record the

current suction gas pressure. The

currently measured pressure is

displayed under LP1 (circuit 1) and

LP2 (circuit 2).

Connection of a crankcase

heater

Compressor (standard/acces-

sory)

The heater is used to expand the

operating range in cooling opera-

tion from +15°C to +5°C. For this

purpose, use the corresponding

mounting instructions.

For units with a heat pump or free-

cooling function, it is installed at

the factory.

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REMKO KWG750 Seite 33

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