5. START-UP, OPERATION, MAINTENANCE
5.1. START-UP/PUTTING INTO OPERATION
Prior to the commencing of any installation or maintenance work, disconnect power supply and secure it against unintentional reactivation.
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in particular).
It is advised to use vent valves in the highest point of the system.
It is recommended to install shut-off valves directly after the device, should the disassembly of the device be necessary.
All protective equipment is to be installed before the pressure increases, according to maximum the permissible pressure rating of 1.6MPa.
Hydraulic connection should be free of any stresses and loads.
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It is recommended to check the correctness of electrical connections (of automatics, power supply), prior to the initial start-up of the device. It is advised to use an additional, external residual-
current protection.
IMPORTANT! All connections should be carried out, according to this technical documentation and the documentation delivered with automation equipment.
5.2. OPERATION AND MAINTENANCE
It is advised to carefully analyse all the operational and assembly guidelines listed in chapter 3 and 4.
The casing of the device does not require maintenance.
The heat exchanger should be cleaned on a regular basis from dust and fat deposit. It is especially recommended to clean the exchanger before the heating season with the use of compressed air
from the air intake side (after removing the inlet grid). You should pay special attention to the exchanger's lamellae which are very delicate.
Should the lamellas be deformed (bent), straighten them with a special tool.
The fan's motor does not require any exploitation service, the only service activities that may be necessary concern cleaning the air intakes from dust and fat deposit.
Disconnect phase voltage, if the device is shut down for longer periods of time.
The heat exchanger does not have any anti-freezing protections.
It is recommended to provide a periodical purging of the heat exchanger, preferably using compressed air.
Should the temperature in the room drop below 0°C, with a simultaneous drop of the heating medium temperature, there is a risk that the heat exchanger might freeze (crack).
The level of air pollutants should meet the criteria allowable concentrations of pollutants in indoor air, for non-industrial areas, the level of dust concentration up to 0.3 g/m³.
It is forbidden to use device for the duration of the construction works except for the start-up of the system.
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content). The device should not be exposed to direct UV rays.
The device should be operated at the supply water temperature up to 90°C with working fan.
6. SERVICING
6.1. PROCEDURE IN CASE OF DEFECTS
Symptoms
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directions (apply the keys on each terminal), which protects against the possibility
of internal breaking of the collecting pipes.
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exchanger.
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Leakage in the
exceed the permissible values.
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exchanger
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the system) and the external ambient temperature at the moment of the defect
taking place (freezing hazard to the exchanger).
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concentration of ammonia in the sewage-treatment plant).
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Maintenance Documentation (among others, the distance from the ceiling).
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The fan of the device
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works too loudly
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noise may be a result of several pieces of equipment working simultaneously.
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terminal block of the fan's engine.
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The fan in the device
SALVADOR ESCODA SA Service Department.
is not operational
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DX contro ller
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Damaged casing of the
inventory issue, condition of cardboard).
device
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Actuator does not open
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the valve
switching the device).
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What to check
37
Description
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exchanger in the winter. 99% of leaks occur during start-up/pressure
checks. The rectifying of the defect consists in the pulling back of the
vent/drain valve.
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the diagrams found in the Operation and Maintenance Documentation.
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directly to the power supply and forcing the electric motor's operation
by shorting appropriate clips of the device's terminal strip and then the
terminal strip in the controller.
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between the serial number on the device and cardboard. If the damage
was done in transport, it is necessary to prepare a proper statement by the
driver/forwarder that delivered the goods.
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to the electrical impulse. When actuator damage is claimed, a complaint
must be submitted for the damaged element, and the actuator must be
deinstalled from the valve to open the valve mechanically (permanently).