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12.9 - Filter drier in the refrigerant circuit
The filter keeps the circuit clean and moisture-free. The
moisture indicator shows when it is necessary to change the
filter cartridges. A temperature difference between the filter
drier inlet and outlet indicates a contamination of the
cartridges.
12.10 - Fixed-speed pump
This pump is factory-installed as standard to guarantee the
nominal flow in the water loop.
This is a fixed-speed pump with available system pressure. See
the pump flow/pressure curve.
The nominal system flow rate must be adjusted with a manual
control valve supplied by the customer (see chapter on the
control of the nominal system pressure).
The maximum permitted concentration of the glycol additives
(ethylene glycol or propylene glycol) is 35%.
The maximum pump suction pressure is limited to 300 kPa (3
bar) due to the valve installed on the entering water piping.
The use of any other glycol type additives must be approved by
Danfoss.
12.11 - Variable-speed pump
This pump is factory-installed. It is a variable-speed pump with
available system pressure. See the pump flow/pressure curve.
The system flow rate is automatically adjusted via the
frequency converter built into the pump, based on the heat
rejection load on the drycooler.
The maximum permitted concentration of the glycol additives
is 35%.
The maximum pump suction pressure is limited to 300 kPa (3
bar) due to the valve installed on the entering water piping.
The use of any other glycol type additives must be approved by
Danfoss.
All pumps are protected by a suction filter. This is easily
removable to recover solid particles. It protects the pump and
the plate heat exchanger against solid particles with a size
exceeding 1,2 mm. Before the unit start-up it is important to
turn the evaporator and condenser pump to decontaminate the
water loops of any solid pollution.
A specific pump start-up function in the Quick Test menu is
available for this task.
12.13 - Connection sleeves
Filter positions in the unit
12.12 - Evaporator and condenser pump suction filter
Position of the water connection sleeves in the unit
12.14 - Option 272: High-temperature water production
with glycol solution
ATTENTION: The temperature sensor positioned in the
discharge for option 272 is specific to this unit and must not
be interchanged with another temperature sensor. For
replacement please contact the Danfoss service team.
Содержание BW10 020-090
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