Comet XRC-3001-WW User manual

COMET AG
Herrengasse 10, CH
-
3175 Flamatt
Tel. [phone], www.comet-xray.com
X C-3001-WW, Doc.-No. 50005552 Page 1 of 15
Industrial X-Ray
Cooler Manual XRC-3001-WW
3000 Watt water to water cooler

COMET AG
Herrengasse
10, CH
-
3175 Flamatt
Tel. [phone], www.comet-xray.com
X C-3001-WW, Doc.-No. 50005552 Page 2 of 15
Document history
Version Date Author Amendment(s) Status
12/15/2008 St. Haferl released
1.0 07/22/2010 M. Schmid Layout / Structure
07/22/2010 St. Haferl released
2.0 10/30/2012 R. Moser Storage tem erature
3.0 07/01/2013 R. Moser U date Cha ter 3
4.0 24/11/2014 R. Vonlanthen U date in Cha ter 2., S ecs change
( ressure rimary, Block diagram
5.0 01.12.2015 M. Schmid New electrical drawing

COMET AG
Herrengasse
10, CH
-
3175 Flamatt
Tel. [phone], www.comet-xray.com
X C-3001-WW, Doc.-No. 50005552 Page 3 of 15
Contents
1 Before you start 4
2 Product Descri tion 5
3 Technical data 6
3.1 Physical dimensions 6
3.2 Performance data 6
3.3 Environmental s ecifications 6
3.4 Settings 6
3.5 Primary circuit s ecifications 6
3.6 Performance data 7
3.7 Overview 7
4 Installation 8
4.1 Antifreeze concentration 8
5 Settings 9
5.1 Regulation characteristics 9
5.2 Tem erature control 9
5.2.1 Tem erature of water outlet (Nominal value, arameter 10
5.2.2 Hysteresis of nominal value (Parameter P1) 10
5.2.3 Alarm value (Parameter P3) 10
6 Maintenance 11
6.1 Pum 11
7 Disconnecting 11
8 Outline Drawing 12
9 Circuit Diagrams 13
9.1 Electrical diagram 13
9.2 Block diagram 14
10 Declaration of conformity 15

COMET AG
Herrengasse
10, CH
-
3175 Flamatt
Tel. [phone], www.comet-xray.com
X C
-
3001
-
WW,
Doc
.
-
No.
50005552
Page
4
of
15
1 Before you start
 Read the manual before setting into operation!
 Coolant: Water or water-glycol mixture (max. 1:1 water - glycol
 Power supply 230 V 50/60 Hz!
 Run cooling unit always with correct coolant level otherwise cooling capacity is
reduced!
 Clean filter regularly according to maintenance instructions, otherwise damage of
pump may occur!
 Never operate cooling unit when ball cock is closed, otherwise damage of pump
may occur!
 Only use cooling hoses with sufficient pressure resistance and with resistance to
used coolant!
 Before opening the cooling unit disconnect always from the mains.
 Before starting any service work disconnect the cooling unit from the mains.

COMET AG
Herrengasse
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3175 Flamatt
Tel. [phone], www.comet-xray.com
X C-3001-WW, Doc.-No. 50005552 Page 5 of 15
2 Product Description
The cooling unit XRC-3001-WW is intended to cool the water circuit of an x-ray tube. The
coolant can be water or a mixture of water and antifree e (water/glycol). Water circulates be-
tween the cooling unit and the x-ray tube (heat source) called the secondary circuit. The water
is re-cooled by a water-cooled heat exchanger, called the primary circuit.
The cooling capacity of the unit depends on the temperature difference between the outlet
temperature of the secondary cooling circuit and the temperature and pressure of the used
water supply (primary circuit).
Cooling hoses are connected to the cooling unit via hose nipples. Water inlet and outlet are
marked with the following symbols.
↓ ↑
Inlet: O Outlet: O
An electronic temperature controller controls the secondary water outlet temperature by acti-
vating a magnetic valve in the primary circuit when the set temperature is reached. This con-
troller is provided with an additional potential free circuit switch, which opens at maximum
temperature.
The water flow in the secondary cooling circuit is monitored and the indication contact is con-
nected to a safety circuit in series with the above mentioned temperature contact.
A bypass valve limits the maximum pressure of the pump.
The temperature controller and the bypass valve are set according to specifications.

COMET AG
Herrengasse
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3175 Flamatt
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X C-3001-WW, Doc.-No. 50005552 Page 6 of 15
3 Technical data
3.1 Physical dimensions
Length: 450 mm
Width: 270 mm
Height: 400 mm
Weight: ca. 24 kg
Coolant capacity: ca. 8,5 l
3.2 Performance data
Cooling capacity: 3000 W (∆T ≤ 22 °K)
Flow rate: ≥ 5.4 l / min at 4 bar
Mains voltage: 230 V + 10% - 15% 48 - 62 H
Current consumption: ≤ 1.8 A
Noise level: ≤ 47 dB(A) at 50 H , distance 1m in any direction
≤ 51 dB(A) at 60 H , distance 1m in any direction
Safety class: IP 33
3.3 Environmental specifications
Operational temperature: 0°C...+ 40°C
(use antifree e if ambient temperature is below 10°C)
Storage temperature: -25°C...+ 70°C (store with antifree e)
Air humidity: 20%...90% non condensing
3.4 Settings
∗
Maximum forward pressure: 6,7 bar
Flow switch open: < 4,0 l/min
Thermal switch open: > 25°C
Thermal switch close: < 45°C
3.5 Primary circuit specifications
Maximum pressure: 6,5 bar (10 bar up to 20°C)
∗
These setting values are optimi ed for our XRS modules.

COMET AG
Herrengasse
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3175 Flamatt
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3.6 Performance data
3.7 Overview
Water INLET
(primary )
Water INLET
(secondary)
Water OUTLET
(secondary)
Water OUTLET
(p
rimary
)
Filler Cap
Temperature difference
coolant forward (sec)– external coolant (prim)
°C
Cooling capacity (in Watt)

COMET AG
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4 Installation
■ The cooling unit must be positioned horizontally and the ventilation holes must be kept
free.
■ Remove sealing caps from hose nipples.
■ Connect the cooling unit with hoses
■ Open filler cap and fill tank with water ( .5 l),
■ Filling height 2 cm below inlet
■ The Cooling water for the tube cooling is
added with antifreeze. We recommend Ethylenglycol
with tap water in a mix according to the table under point 4.1.
■ Establish electrical connection according to
■ the wiring diagram
■ Connect to power and run unit approx.
10minutes to remove air from system.
■ Check water level. If necessary refill water.
■ Replace metal transportation filler cap with red stationary filler cap.
4.1 Antifreeze concentration
It is essential that the correct antifreeze mix is added. The recommended antifreeze product is
Ethylenglycol. See the table below for your guidance. Consult your antifreeze supplier for Eth-
ylenglycol .
Concentration by volume (%) Approximate freezing point
(ºC)
20 -9
25 - 2
30 - 5
50 -25

COMET AG
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5 Settings
5.1 Regulation characteristics
The temperature control unit and a solenoid
valve manage the control of the water outlet
temperature. The valve is to be opened or
closed. If the temperature of the supply water
is much lower than the nominal value or if
there is a high pressure from the water supply
side there is a quick and very peak regulation
characteristic.
To configure the regulation characteristic
much smoother, there is a ball cock in the
cooling circuit to reduce the pressure. If the
ball cock is partially closed the regulation
becomes smoother.
5.2 Temperature control
The electronic temperature controller controls the magnet valve in the cooling circuit and the
contact for maximum water outlet temperature. The controller has 11 parameters, which are
set according to the specifications of the cooling unit XRC-3001-WW.
Note: To ensure the functioning of the cooling unit, only parameter P0, P and
P3 are to be changed by the customer!


COMET AG
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5.2.1 Temperature of water outlet (Nominal value,
parameter
P0)
 Push SET key longer than 1 sec., Display: P0
 Push SET key short Display: Value for
P0
 Set desired value with ∆∇ keys
 Store value with a short press on SET key.
The controller closes the program modus, if no key is pressed for longer than 5 seconds.
5.2.2 ysteresis of nominal value (Parameter P1)
 Push SET key longer than 1 sec., Display: P0
 Push ∆ key Display: P1
 Push SET key short Display: Value for P1
 Set desired value with ∆∇ keys
 Store value with a short press on SET key.
The controller closes the program modus, if no key is pressed for longer than 5 seconds
5.2.3 Alarm value (Parameter P3)
 Push SET key longer than 1 second, Display: P0
 Push ∆ key twice Display: P3
 Push SET key short Display: Value for P3
 Set desired value with ∆∇ keys
 Store value with a short press on SET key.
 The controller closes the program modus, if no key is pressed for longer than 5 seconds

COMET AG
Herrengasse
10, CH
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3175 Flamatt
Tel. [phone], www.comet-xray.com
X C
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6 Maintenance
Check the water level on a regular basis, refill water if necessary
.
6.1 Pump
Check the water pump filter to ensure a clean condition roughly every 3 months, if necessary
more often.
Note: If the filter is not in clean condition damage of pump and motor may occur
 Disconnect the cooling unit from mains
 Remove cover
 Unscrew pump filter and check the filter
for impurity (24mm nut)
Notice: Some water will run out of
the pump. Collect the water with
suitable vessel
 If necessary clean or replace filter
 Attach filter to the pump
 Check water level and refill if necessary.
 Mount cover
 Set to work
7 Disconnecting
 Empty tank
 Disconnect from power supply
 Disconnect hoses



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8 Outline Drawing

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9 Circuit Diagrams
9.1 Electrical diagram
Caution: The cooler has to be fused when used as a standalone unit with 4A, slow
blow ty e. The default lug is a Cannon lug.

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9.2 lock diagram
Primary
circuit
Secondary
circuit

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X C-3001-WW, Doc.-No. 50005552 Page 15 of 15
10 Declaration of conformity