11
EN
6. SERVICING
6.1. PROCEDURE IN CASE OF DEFECTS
DEFENDER 100-200 WHN/EHN
Symptoms
What to check
Description
Leakage in the
DEFENDER 100-200
WHN heat exchanger
● Fitting of the heat exchanger terminals, using two keys acting in two opposite
directions (apply the keys on each terminal), which protects against the possibility
of internal breaking of the collecting pipes.
● Relation between the leaking and a potential mechanical damage to the
exchanger.
● Leaking of vent valve elements or drain plug.
● Parameters of the heating medium (pressure and temperature) should not
exceed the permissible values.
● Correctness of the draining of the exchanger.
● type of agent (it cannot be any aggressive substance Al or Cu active),
● Circumstances in which leaking occurred (e.g. during the trial/initial start-up of
the system; after having drained the heating medium, followed by the filling of
the system) and the external ambient temperature at the moment of the defect
taking place (freezing hazard to the exchanger).
● Potentially aggressive atmosphere (air) in the place of work (e.g. high
concentration of ammonia in the sewage-treatment plant).
● Pay particular attention to the possibility of the freezing of the heat
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.
The fan of the device
works too loudly
DEFENDER 100-200
WHN, EHN
● Installation of the device, according to the guidelines in the Operation and
Maintenance Documentation (among others, the distance from the ceiling).
● Minimum distance: 20 cm from the ceiling
● Correctness of the horizontal alignment of the device.
● Correctness of electrical connections and qualifications of
● Parameters of the supply current (among others: voltage, frequency).
● Incorrect covering of the curtain in the suspended ceiling.
● Noise in lower speeds (damaged winding).
● Noise present only in the higher speeds – blocking of the air outlet.
● Type of other equipment working in the facility (e.g. exhaust fans) – increasing
noise may be a result of several pieces of equipment working simultaneously.
● Louder operation of DEFENDER 100-200 devices may be a result of
inappropriate place of assembly : e.g. choking the fan or the acoustic
specifics of a room.
The fan in the device
is not operational
DEFENDER 100-200
WHN, EHN
● Correctness and quality of electrical connections and qualifications of the fitter.
● Parameters of the supply current (among others: voltage, frequency) on the
terminal block of the fan’s engine.
● Operational correctness of other pieces of equipment present in the facility.
● Correct fitting of the conduits on the engine side – information available from VTS
Service Department.
● Voltage on the PE conductor (if present, it may indicate a breakdown).
● The electrical connection of the device must be carried out, according to
the diagrams found in the Operation and Maintenance Documentation.
● Damage, incorrect connecting or fitting of a wall-mounted controller, other than the
DX contro ller
● It is recommended to check the device by means of connecting the curtain
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.
Damaged casing of the
device
DEFENDER 100-200
WHN, EHN
● Circumstances in which the defect occurred: remarks on the bill of lading,
inventory issue, condition of cardboard).
● Should the casing be defective, it is required to present photos of the
cardboard and device, as well as photos that confirm the compliance
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.
WALL-MOUNTED
DX CONTROLLER
does not work/is burnt
● Correctness and quality of electrical connections (tight clamping of conductorsin
electric terminals, cross-section and material of electric conductors) and the
qualifications of the fitter.
● Parameters of the supply current (among others: voltage, frequency).
● Operational correctness of the DEFENDER 100-200 device, when connected
directly to the power supply (ignoring the DX controller).
● Whether the user has not damaged the “hand-wheel”, e.g. by rotating it by 360˚,or
the switch, e.g. by keeping it in the intermediate position.
● It is recommended to check the device by means of connecting the curtain
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.
Actuator does not open
the valve
● Correctness of electrical connections and qualifications of the fitter.
● Operational correctness of the thermostat (the characteristic “ticking” when
switching the device).
● Parameters of the supply current (among others: voltage).
● It is of the highest importance to verify whether the actuator reacted to
alectrical impulse within 11 seconds. If you observe any damage of the
actuator you should make a complaint concerning the damaged element
and switch the actuator's operation mode to 'manual' - MAN which will
result in mechanical (permanent) opening of the valve.
The thermostat in the
DX controller does not
send any signal to the
actuator
● Correctness of electrical connections and qualifications of the fitter.
● Operational correctness of the thermostat (the characteristic “ticking” when
switching the device).
● Operational correctness of the actuator.
● Parameters of the supply current (among others: voltage).
● Place of thermostat/actuator installation in the room.
● If the “ticking” sound is not heard, the thermostat has been mechanically
damaged and should be subject to the complaint procedure. The
thermostat can also be installed in an improper space, which is subject to
temperature monitoring.
It is forbidden to place, dispose of and store worn-out electric and electronic equipment, together with other waste. Dangerous compound contained in electronic
and electric equipment have a very adverse impact on plants, micro-organisms, and, most importantly, on humans, as they damage our central and peripheral
nervous system, as well as circulatory and internal system. Additionally, they cause serious allergic reactions. Worn-out equipment is to be delivered to a local
collection point for used electric equipment, which carries out a selective collection of waste.
REMEMBER!
The user of equipment intended for households, and which has been worn out, is obliged to transfer such equipment to a collecting unit that collects worn-out
electric and electronic equipment. The selective collecting and further processing of waste from households contributes to the protection of environment,
reduces the penetration of hazardous substances into the atmosphere and surface waters.
