'操作说明 Hotflow THREE_26_zh.pdf - 第469页
1. FOR YOUR SAFETY ENGLISH T ranslation of the original 12 451820.66.03_EN 2020-05-05 1.8 Correct use of the cooling unit The cooling unit is designed to be used with a closed refrigerant circuit and solely for cooling d…
Translation of the original ENGLISH 1. FOR YOUR SAFETY
451820.66.03_EN
2020-05-05
11
The room size and air volume flow required as a result of the necessary heat dissipation dur-
ing operation are not taken into account in the above table!
Chapters 5.1 and 5.2 must be observed to ensure fault-free operation!
1.7.2 Operation
The owner or operator of the cooling unit is obliged to define measures for emergencies
(accidents and diagnoses). The operator must draw up quick reference instructions based on the
existing operating instructions and make them available to employees.
The quick reference instructions must be clearly displayed in the immediate area of the cooling unit.
(See "Sample quick reference instructions" in appendix)
The owner or operator is obliged to keep a system log for the cooling unit.
The system log must either be kept close to the cooling unit or, if the information is saved on a
computer of the owner or operator , a print-out must be kept close to the cooling unit. The information
must be made available to trained personnel during repair work or retesting.
(See "Sample system log" in appendix)
1.7.3 Regular leakage checks
The operator is obliged to subject the cooling unit to regular leakage checks.
(See chapter 13 "Operator duties")
1.7.4 Retesting
Regular tests (retesting) carried out by qualified personnel are specified for the cooling units based
on EN 378 to ensure compliance with the minimum requirements for health and safety.
The operator is responsible for carrying out the retesting.
(See chapter 13 "Operator duties")
1. FOR YOUR SAFETY ENGLISH Translation of the original
12
451820.66.03_EN
2020-05-05
1.8 Correct use of the cooling unit
The cooling unit is designed to be used with a closed refrigerant circuit and solely for cooling defined
operating mediums within the specified temperature limits. The machine must only be used for the
purposes described in these operating instructions or other applicable documents.
Correct use of the machine also includes:
• Compliance with the applicable safety regulations in the country of use
• Observance of the operating instructions and all safety notes
• Timely and professional execution of all inspection and maintenance work as well as all
retesting required by EN 378
• The presence and correct function of all safety features
• Compliance with all maximum permissible operating values and performance data as
specified in the chapter "Technical data"
1.9 Incorrect use of the cooling unit
Any other utilization of the machine or usage for purposes other than those described above
constitutes incorrect use. This includes in particular:
• Operation outside the specified temperature limits
• Unauthorized additions and/or modifications
• The use of an operating medium in the cooling water circuit that does not meet the
specifications
• Operation in potentially explosive environments
Risk of personal injury or damage, liability exclusion, loss of warranty!
Incorrect use can result in injury, material damage and loss of warranty. All associated risks are
borne solely by the operator or user.
The machine must only be used for its intended purpose!
Translation of the original ENGLISH 1. FOR YOUR SAFETY
451820.66.03_EN
2020-05-05
13
1.10 General requirements for the coolant
1.10.1 General
To minimise the probability of corrosion damage, algae and sludge formation in the coolant circuit,
the physical and chemical properties of the coolant must be considered during planning,
commissioning and operation. We recommend that the quality of the coolant be checked in
accordance with the specifications of chapter 12 "Maintenance" as a minimum.
The cycles should be determined by the operator based on the environmental and operating
conditions. The existing guideline values are based on empirical values and notes for assessing the
probability of corrosion as set out in EN 12502. Due to the complex interactions between the
materials used and the medium, as well as the different physical and chemical boundary conditions,
universally valid standards cannot be drawn up.
Evaporation on the system water surface can result in thickening of the system water. Raw water
values that are still below guide levels can exceed these levels as a result of this thickening. We
therefore recommend that the water quality be checked on a regular basis and that the water be
replaced if necessary to eliminate the thickening and realign the water values with the basic
conditions.
1.10.2 Guideline values for water quality
Generally speaking, the guideline values for drinking water quality in the EU are met. If necessary,
the water quality should be measured according to EN 50930-6.
The coolant should not contain any organic, settleable or abrasive materials. The use of surface
water or saline water is not permissible.
Corrosion resistance depends primarily on the formation of a protective, stable and adhesive
surface layer. The relevant parameters for developing and maintaining the protective layer are the
pH value and the hydrogen carbonate and sulphate content ratio.
A detailed overview of the water quality requirements can be requested from Glen Dimplex
Deutschland GmbH.