Specifications are subject to alteration without notice.
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• The venting holes shouldn’t be completely open, but
only slightly to allow the air to be forced out.
• To remove all the air from the cooling unit, start the
pumps to transport any air remaining in the circuit to
the venting nipple. Always check that there is
positive pressure in the system (check the
manometer), otherwise the air cannot be forced out.
If the pressure isn’t positive, fill up with more of the
water/glycol mixture.
• The system should maintain a positive pressure of
about 0.5 bar while you are venting it.
• If there is still air in the system, repeat the venting
procedure as many times as necessary until there is
no air left in the system.
• When the system reaches the correct pressure,
close the tap and take away the filling pump.
7
CoMMissioninG
7.1
Preparations
7.1.1 Before starting up for the first time
• The water circuits shall be filled and vented.
• The power supply must be connected.
• The external control signal or communication cable of
the GOLD unit must be connected.
• Check the Dip-switch settings on the control
card. For communication via bus with the GOLD
unit, all switches (1 - 4) should be in the ON position.
For control via external 0 - 10 V DC signals, switch 1
should be OFF and switches - 4 should be ON.
• The hand-held micro terminal must be connected.
• Check that all fuses and motor protection circuit
breakers are switched in.
The control system of the unit has a preprogrammed fac-
tory setting, which makes the unit ready to use when basic
settings have been entered.
7.1.2 Starting up
• Set the Cooler safety isolating switch to the ON position.
• Take the hand-held terminal and enter the TEST mode
by pressing the TEST pressure button and holding it
pressed in for about 5 seconds.
• Start the pump/pumps to run for a few minutes to
check that the liquid control systems are free from air.
Start the pumps by pressing the PROG button to
advance to the control position. Use the ”arrow
right” and ”arrow left” buttons to move the marker
and press the ”+” button to highlight ”1” (operation)
or the ”--” button to highlight ”0” (stop).
• Repeat the same procedure to start the compressors
in the next menu image.
(The pumps must be in operation).
• Size 48 and 60 Coolers: the direction of rotation of
the compressors is important.
• Start one compressor at a time and advance menus,
to the temperature reading image. Check that BRINE
TEMP drops and that COOLING AGENT TEMP rises
after just a few minutes of operation. If this does not
occur, the direction of rotation may be wrong. If this
is the case, change the sequence of the power supply
phase wires, see Section 7.1.3.
• Repeat this check to make sure that the direction of
rotation is correct.
• Set the compressors and pumps to 0 (stop).
• Press the RET button to return to the main menu.
From there, press the SET button to advance to the
settings mode. Press button for Auto operation and
confirm by pressing the SET button.
• The Cooler is now ready for operation and will oper-
ate whenever the connected control signal calls for
cooling.
• Remove any impurities that may have collected in the
strainer(s)!
7.1.3 Correcting the phase sequence
Caution!
To be carried out by an authorized electrician or trained
service personnel only.
• Stop the Cooler by selecting SWITCHED OFF under
the settings mode.
• Then switch off the safety isolating switch on the
Cooler.
important!
Isolate the power supply to the unit.
• Transpose the two phase power supply conductors to
obtain the correct direction of rotation.
• Switch on the power supply to the unit.
• Turn the safety isolating switch to the ON position.
• Start the Cooler as described under Starting up, see
Section 7.1..
Commissioning report
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gB.Cooler.inSt.060501
