AHT Cooling Systems GmbH
46
7.1 Electrical connection
The connection to the power supply is provided by
qualified staff. For technical data, see
→
Chapter 2.2.
WARNING
Connect the device to the power supply.
Contact with live parts may cause electric
shock. Risk of fire due to sparks or
overloading.
►
Work on the electrical system may only
be performed by qualified staff.
►
The connection to the power supply can
only be performed by qualified staff.
►
Refer to the local electrical safety
regulations.
►
Follow the applicable standards and
safety instructions.
►
Follow the information on the power rating
plate (see
→
Chapter 2.2.1). The network
voltage and the network frequency must match
the specifications on the power rating plate.
►
Observe the safety rules before
production of the power connection:
1. Disconnect the device.
2. Secure the device against restarting.
►
Do not connect any damaged devices to
the circuit.
►
Damaged parts (such as power cords)
must only be replaced by trained staff.
►
Contact the maintenance service (see
→
Chapter 10.4).
►
Do not squeeze or bend power supply
cords.
►
Observe the minimum requirement for
connection cables (see
→
Chapter 2.2).
►
The device must be electrically protected
according to the applicable laws and
regulations and the requirements of AHT
(see
→
Chapter 7.2).
►
Connect the device only to a network
circuit with protective grounding.
►
Do not use extension cords or multiple
power strips.
►
Concealed electrical parts must not be
damaged. Drilling or other work on the
device is not permitted.
Device connection for devices < 150g R-290 for
refrigerant circuit and R-134a devices:
-
3 x 380-420V 50Hz /N/P
The device is connected by a mains plug (see
→
Fig. 8.1).
The device does not have an on/off switch.
The socket for the device connection must not be
screwed onto the device.
Wall mounting is recommended.
Fig. 8.1: Device connection 380-420V network (symbol display)
-
3-pin 4 wire ground 208-240 V/ 60 Hz
The device is connected to a NEMA L15-20R
socket by means of a NEMA L15-20P mains plug
(see
→
Fig. 8.2).
The device
does
have
an
on/off switch.
Fig. 8.2: Device connection 208-240V network and
ON/OFF switch (symbol display)
Device connection for devices > 150g R-290 for
refrigerant circuit:
The device connection is made by a fixed
connection with a terminal (see
→
Fig. 8.3).
The device does not have an on/off switch.
The device connection must not be screwed onto
the device. It must be installed at least 0.5 m above
the device.
The cable must be connected so that the IP
protection class (see
→
chapter 2.2) is not changed.
Fig. 8.3: Device connection for devices > 150g R-290
(symbol display)
NOTICE
•
Material and property damage
caused by non-
AHT-approved deviations (voltage, rotation
direction, frequency) in the operator's electrical
network.
►
The manufacturer is not responsible for damage
to the electrical device of the operator and the
subsequent damage caused thereby.
•
Material damage
due to a faulty electrical
connection.
►
Ensure the correct rotation direction (right-hand
rotary field) of the power supply.
►
Load shedding circuits or device shutdowns are
not permitted.
7.2 Electrical protection
Each device must be equipped with an electrical fuse.
For technical data, see
→
Chapter 2.2.
WARNING
Faulty/inadequate electrical fuse.
Contact with live parts may cause
electric shock. Risk of fire due to
sparks or overloading.
► Provide
adequate protection.
► Never connect more than 1
device to a miniature circuit
breaker or a residual miniature
combination switch (RCBO).
On/off
switch
