Ersa HF3_20 操作说明 - 第592页
2 5 94160 - englisch_BA 06. 07.2005 ENG LIS H The visual insp ection com prises: Checking the air filter mats of the condenser for cleanliness Checking the intactness of the joint sealing in the refrigeration circuit (pi…
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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
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The visual inspection comprises:
Checking the air filter mats of the condenser for cleanliness
Checking the intactness of the joint sealing in the refrigeration circuit (pipe joints at
compressor) (red seals)
Visual inspection of the refrigeration circuit for oil leaks in the area of the compressor and
condenser connecting lines (suction line, pressure line)
Inspection of the condenser heat exchanger surface and the refrigerant piping for corrosion
damage
Inspection of the mounting and attachment of all piping and components for security
Visual leakage inspection of the water circuits under operating conditions
Check that operating manual is available on site.
The repeat tests must be documented in the system logbook.
12. Regular Performance Tests
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94160 - englisch_BA
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13. MALFUNCTIONS / TROUBLESHOOTING
The safety notices contained in Chapter 1 must be complied with !
The basis for troubleshooting is the circuit diagram, the flow diagram and the messages
displayed on the control panel.
The controlled variable is the main setpoint.
Displays on the Control Panel
See Chapter Operation of Control and Operating Unit
13.1 Malfunctions / Troubleshooting Control and Operating Unit ST 501
E1 to E4 illuminate
- when the process cooler is ready for operation.
Arrow UP or arrow DOWN illuminates
- In the differential control mode, setpoint limits for changeover to
fixed setpoint control are parameterised.
- When the limit values are exceeded or fallen short of, the corresponding LED
illuminates.
Fault displays:
F1 – F8 will flash in alternation with the display of the actual value.
13. Malfunctions / Troubleshooting
Fault Display Malfunction / Cause Remedy
No display
No voltage present
Main switch not turned on Place main switch in position -1-
Automatic control circuit breaker has tripped Check automatic control circuit breaker
Control voltage not enabled
Remote control not switched on Check remote control, check jumper wire
across terminals in control cabinet in
accordance with circuit diagram
F1
Sensor error Sensor 1
Sensor 1 break or short-circuit Check sensor, replace if necessary
F2
Sensor error Sensor 2
Sensor 2 break or short-circuit Check sensor, replace if necessary