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COSTAN TECHNICAL DOCUMENTATION
REVISION STATUS
TRUE COPY
PAGE 11 OF 8
PRODUCT:
EPTAGLOO
ORD
DATE
CHANGE ORDER
OF THE SIGNED
DATE OF 1st ISSUE
DOC. no.
QSM0000406A
CHAP.
No.:
050
A
23.Feb.2010
RANGE
EXTENSION
ORIGINAL
13/June/07
CHAPTER:
ELECTRICAL PANEL
TECHNICAL SPECS
ISSUED BY MKT
10.1.4 box under Costan code
3N5650
wired to
CAREL PCO-3 BUILT-IN MEDIUM
PCO3CF051K
Low and high pressure electronic regulation by the dead zone principle.
10.1.5 box under Costan code
UQ39E005E
wired to
CAREL uRack (micro Rack)
Low-pressure electronic regulation by the dead zone principle.
10.2 Controller wiring
10.2.1 Controllers are wired in an appropriate box that can be removed by unscrewing the bolts
that fasten it and disconnecting the clamp plugs.
As for controller features, cfr. the Control and Regulation chapter.
11. OPTIONAL residual current circuit protection against indirect contact:
Diagrams UTQ039110/sheet 11 - UTQ039112/sheet 12 - UTQ039113/sheet 13.
11.1 Diagram UTQ039110/sheet 11 n.2 residual current devices for overall safety and service
11.1.1 residual current device n.1 protects the PED pressure-switch circuits and back-up
operation regulation
11.1.2 residual current device n.2 protects secondary auxiliary circuits, liquid level, alarm
and the electronic regulation box.
The two residual current devices never shut down the machine due to failure of secondary
services.
11.2 Diagram #UTQ039120/sheet 12 residual current devices for compressor protection
Each compressor has a residual current device, so that when one compressor fails this does
not affect the others.
11.3 Diagram #UTQ039130/sheet 12 residual current devices to protect condenser fans
Each condenser fan control has a residual current device, which means that when one fan
control circuit fails it does not affect the others.
The setting for residual current devices must not be below a current of ID of 300mA.
Tripping time must not be below 150mS.
Residual current devices must be test operated regularly, using the appropriate push-button.
12.Terminal strips
12.1 Phoenix spring terminals organized in terminal strips as below:
12.2
Terminal strip 1
:
machine compressor connection:
horizontal lower position.
12.1 This terminal strip is where all auxiliary, control and compressor mechanisms are
connected.
These devices are factory-wired.
12.3
Terminal strip 2: Condenser fans and machine-room air expeller:
side/vertical position.
Connections to be made on site.
12.2.1 This terminal strip is where all machine external services and accessories are
connected, i.e condenser fans, machine room air expeller and alarms. These accessories need to be
connected on site.
12.2.2 To lead the wires in use the appropriate raceway on the right side of the electrical
panel.
12.2.3 All the mechanisms must be connected to the earthing system using the appropriate
earthing bar.
12.4
Terminal strip 2
:
Alarms:
side/vertical position. Connections to be made on site.
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