31
www.juwent.com.pl
The herein documentation includes only general instructions for control intervals to
ensure correct operation of the unit due to various external conditions of their
functioning and use. Therefore control intervals must be adjusted to the current
conditions (contamination, number of starts, load, etc.). Personnel in charge of the unit
operation should, from the moment of its starting, run on-going records in “Inspection
and Maintenance Chart”, where any works resulting from normal, routine operation of
the device should be included. A carefully run record is the only valid document to
confirm condition of the device operation, terms of current inspections, and any
potential device malfunctions found.
When it is necessary to contact JUWENT representations always give the device’s serial
numbers which can be found both on the housing and in the documents delivered with
the unit.
Time intervals between particular activities are defined for the unit non-stop operation
and for the system with low dusting and absence of other conditions which would
interfere with normal operation of the device. In environments where high dusting is
present on the supply and/or exhaust it is advisable to carry out inspection more
frequently.
Spare parts and accessories for the unit can be ordered at the local JUWENT Authorised
Service Point. When placing an order, give the device type and its serial number. This
information can be found on the base section’s data plate.
15.1. AIR DAMPERS
If excessive soiling and improper operation is found, clean it using either of these:
»
using industrial vacuum cleaner with soft suction nozzle,
»
blow with compressed air,
»
clean with pressurized water with mild detergents which cause no corrosion to aluminium,
»
pay particular attention to the damper tightness after it is closed, particularly from the external
air side, as otherwise water heating coil may be frozen.
15.2. FILTERS
With standard conditions of the unit operation, filters should be replaced approximately once every
half year. An indication when filters need to be replaced (apart from visual assessment of their
function) is an increase in the pressure above 200 Pa for M5 & F7 filters.
Degree of filtration is different for each types of filters, therefore when replacing them it is particularly
important to install filters of the same filtration class.
Pleated and bag filters are intended for a single use. When replacing a filter also remember to clean
the filtration section by dusting or wiping it with use of a damp cloth. If a new set of filters needs
to be ordered at a JUWENT Authorised Service Point, give the filter type and class and size of the
unit, and possibly size and number of filters. This data is given each time on data plate on the unit
located in base section.
The units must be operated with installed air filters, as otherwise power consumption of the fans
may exceed the set points, and thus result in burning of motor windings.
The table below includes filter dimensions for a given unit size. For M5 filters the capacity in litres is
given as total for supply and exhaust side.
