51 / 97
83000102.Ko
7.1.
Installation checklist
Unit installed horizontal and stable?
Any vibration damping and floor anchors installed?
Spaces / clearances around the unit are adequate according to the requirements?
Air intake side free from packaging materials, etc.?
Hydraulic connection OK?
Cold water circuit filled in accordance with the specifications? Water quality OK?
Whole system flushed? Dirt trap cleaned?
Cross-sections adequately dimensioned?
Electrical connection OK? Electrical power is available?
External pumps OK? Rotational direction?
Unit cover closed?
Overall system OK and ready for commissioning/startup?
Compressor "preheated"?
External release OK?
After checking the above list you can continue with
Chapter 8 Operation
.
8.
Operation
The chiller is designed for fully automatic operation.
8.1.
Switching on
First, switch on the machine at the main switch (component 5 in
Figure 17: C6842 Display and operating
modes
). A start screen appears on the display.
8.2.
Selecting the operating mode
In the Start screen you can choose between the following three operating modes:
STANDBY
This operating mode must be selected if the chiller has been without power for more than 6 hours
at ambient temperatures <5°C. In this case the compressors must be preheated for 3 h, so that the
refrigerant can escape from the oil. The cranckcase heater and thermostatic pump start are
effective.
AUTO
The chiller is ready for operation. Fully automatic operation starts by external release (potential-free
contact) according to
Chapter 8.3. External release
. When the contact is open, the compressor
heating and the thermostatic pump start are active. When the contact is closed, the fully automatic
control for the compressor and the tank heating is enabled. The chiller regulates to its setpoint value.
ON
The chiller is permanently switched on in fully automatic operation without external release.