Istruzioni d´uso_HF3_14_it.pdf - 第616页
23 2KE0041502 - englisch_BA 04.1 1.2010 ENGLISH 1 1 . MAINTENANCE The safety notices contained in Chapter 1 must be complied with ! Always disconnect the process cooler from the mains power supply before attempting to op…
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2KE0041502 - englisch_BA
04.11.2010
ENGLISH
10. OPERATION OF CONTROL AND OPERATING UNIT
The process cooler is switched on by means of the power disconnect switch (main switch)
which also doubles as EMERGENCY STOP switch.
The process cooler is now operational, the control and operating unit takes over the control of
the water outlet temperature.
It is not possible to start up the unit if there is an active low water level or dry run protection
signal.
10. Operation of Controland Operating Unit
10.1 Control and Operating Unit ST 501
1 Display
2 Status displays
E1 Pump+water level status
E2 High pressure status
E3 Low pressure status
E4 TK fan status
3 Control modes
1 Pump on
2 Control setting 1 on
3 Control setting 2 on
4 UP button
to increase setpoint or parameter value
5 DOWN button
to decrease setpoint or parameter value
Actual values
Version with tank:
In the normal state, the flow temperature of the water circuit is indicated on the display.
Version without tank:
In the normal state, the return temperature of the water circuit is indicated on the display.
Press button F2 to display the flow temperature.
Setpoint adjustment
The setpoint is adjusted by simultaneously pressing the SET button and the UP or DOWN
button.
1
2
3
SET
E1
E2 E3
E4
F1
F2
°C
1
2
3 4 5 6 7 8 9 10
Control and Operating Unit ST 501
6 Alarm displays
Arrow Up“ fixed setpoint control, upper
limit value, f. differential control
„Arrow Down“ fixed setpoint control,
lower limit value, f. differential control
„Alarm“ common fault alarm
7. SET call-up of setpoint or parameter
display
8 F1 button -> special function after
parameter enabling
9 F2 button -> special function after
parameter enabling
10 Stand-by button controller On / Off
Option
23
2KE0041502 - englisch_BA
04.11.2010
ENGLISH
11. MAINTENANCE
The safety notices contained in Chapter 1 must be complied with !
Always disconnect the process cooler from the mains power supply before attempting
to open the cabinet !
No specific refrigeration technology knowledge is required for the performance of maintenance
activities. This work can be carried out by a properly trained person with appropriate know-how.
11. Maintenance
Item to be serviced Interval Activity
Process cooler
in general
Phone: +49 (0) 9221 / 709-545
Fax: +49 (0) 9221 / 709-529
Water circuit
Cooling water
- Replace filter or clean, if necessary
- Check water quality
Cooling air circuit
Filter mat
Condenser
2 weeks
2 weeks
1 week
- Visual inspection of air filter mat for
contamination
- Visual inspection of refrigeration circuit
for leaks
- in the event of leaks, call customer
service:
- Visual inspection of water circuit for
leaks
Clean condenser with compressed air, be
careful not to damage fins
- Check water level, top up
Replace filter mat or clean, if necessary
Filter in
water circuit
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2KE0041502 - englisch_BA
04.11.2010
ENGLISH
12. REPEAT TESTS
The safety notices contained in Chapter 1 must be complied with !
Throughout the service life of the process cooler, monitoring and inspection must be carried out
in compliance with local or national regulations !
In the absence of relevant national provisions with respect to repeat tests device-specific tests
should be performed in accordance with EN 378-2.
Scope of tests
Monitoring and testing must be carried out by a competent person (in accordance with
EN13313) or a specialist enterprise in compliance with environmental requirements with
respect to reuse and disposal of fuels/oil and component parts.
Definition of Test Designations
M1: Repeat tests must be carried out following any intervention in the refrigeration cycle due
to required repair or service activities (replacement of components, elimination of leaks,
replacement of filter-drier cartridges).
M2: Repeat tests must be carried out prior to restarting a process cooler following a shut-
down period of more than 2 years.
M3: Following the initial startup of the process cooler at the end customer’s site, repeat
tests must be carried out whenever the unit is moved to a new location.
Due to special transport safety measures, the relocation of the process cooler from
manufacturer’s plant to the end customer does not result in any increased failure rate
and therefore requires no repeat test to be carried out.
M4: The repeat test must be carried out every year.
12. Regular Performance Tests
Monitoring
M1 X X X X
M2 X X X
M3 X X
M4 X X
Checks
Test
Designation
Visual
inspection
Pressure test
Refrigerant
leak test
Funct. check
HP pressostat