'操作说明 Hotflow THREE_26_zh.pdf - 第516页

T ranslation of the original ENGLISH 14. DIAGNOSIS OF UNPLANNED SWITCH OFFS 451820.66.03_EN 2020-05-05 59 14. DIAGNOSIS OF UNPLANNED SWITCH OFFS Follow the safety notes in chapter 1! The diagnosis is based on the wiring …

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13. OPERATOR DUTIES ENGLISH Translation of the original
58
451820.66.03_EN
2020-05-05
The following also apply:
• Recording requirement with a storage requirement of five years
1
regarding the type and
quantity of recovered and disposed of refrigerant and all maintenance/inspection
measures carried out, and obligation to present the information to the responsible
authority on request;
• Duty for recovery of refrigerants only on the part of certified personnel and companies.
13.2 Recurring checks
In addition to the duties detailed under 13.1, monitoring and inspection of the refrigerant circuit and
pressure vessels is also required over the entire operational life of the cooling unit. This must be
performed or commissioned by the system operator in accordance with national regulations!
As part of the RIEDEL Care agreement, the required tests and accompanying documentation for all
commissioned maintenance can be completed free of charge. If no relevant specifications regarding
retesting are provided in the national regulations, device-specific retesting is required in accordance
with EN 378-4.
1.See directive (EU) 517/2014, Article 6.
Translation of the original ENGLISH 14. DIAGNOSIS OF UNPLANNED SWITCH OFFS
451820.66.03_EN
2020-05-05
59
14. DIAGNOSIS OF UNPLANNED SWITCH OFFS
Follow the safety notes in chapter 1!
The diagnosis is based on the wiring diagram, flow chart and messages displayed on the control
and operating unit.
Regulation is based on the main setpoint value.
Displays in the control and operating unit
See chapter 11. Operation
Frequent, repeated resetting or restarting, particularly in the case of high- and low-pressure
cut-offs, can result in damage to the cooling unit that is not covered under warranty!
14. DIAGNOSIS OF UNPLANNED SWITCH OFFS ENGLISH Translation of the original
60
451820.66.03_EN
2020-05-05
14.1 Diagnosis of control and operating unit ST 501
E1 to E4 light up
- When the cooling unit is ready for operation.
UP or DOWN arrow lights up
- In the case of differential regulation, setpoint value limits are configured for switching to fixed-
setpoint regulation.
- If the values exceed or fall short of the set limit values, the relevant LED display lights up.
Display in the case of a diagnosis:
F1 – F8 flashes alternately with the actual value display.
(See following pages for overview of diagnostic messages on the control and operating unit ST 501)
1
2
3
SET
E1
E2 E3
E4
F1
F2
°C