Carel MC, Руководство пользователя

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38
ENG
MC DUCT +03U400025 - rel. 4 - 20201201
Line Problem Cause Solution
3 Individual heads spray
heavier than the rest.
C1 Valves not fully open or closed S1 Check that all valves on the heads are either full open or full
closed
S2 Check the air cap and water nozzle orifices for wear or
occlusion. Clean or replace if necessary.
S3 Remove the atomizing heads in question and check the
adjustment of the maximum capacity against a calibrated
water flow meter, one head at a time. If the water flow is
incorrect at the design pressures (30psi air / 5psi water), then
turn the adjusting screw in the back of the head clockwise to
reduce the flow and counter clockwise to increase it.
4
All heads spray too heavy
or too light.
C1 Air stream is already satisfied S1 Check the condition of the air stream. If you are doing startup
of the unit, and forcing the system to operate at 100% with
little to no actual demand, then the observation of too much
mist may be inaccurate.
C2 Air or water pressure setting
incorrect
S2 With the system at 100% demand (output), adjust the air
and water pressure regulators in the control cabinet to their
proper settings of 30psi air and 5psi water at the end of the
manifolds. Now adjust the water pressure regulator up/down
until an acceptable output is observed. (Warning: Increasing
the water pressure to gain more output may actually result in
less evaporation due to the larger droplet sizes created. You
must confirm the proper pressure settings before calling to
discuss performance issues.)
5 The top of the AHU/duct
is getting wet.
C1 Incorrect Installation S1 Check that the system is installed as directed by the custom
installation drawings. Confirm that the dimensions used to
create the drawings are the actual dimensions of the AHU.
If the designed clearance to the top of the AHU cannot be
achieved, tilt the atomizing manifold so that the discharge
of the heads is directed toward the top of the cooling coil/
mist eliminator.
C2 Incorrect Installation S2 Check to see if the AHU is operating with a variable frequency
drive. If so, this information may not have been passed on the
CAREL when the installation design was done.
If the system is a VAV unit, tilt the atomizing manifold so that
the discharge of the heads is directed toward the top of the
cooling coil/mist eliminator.
C3 Obstructions S3 Check for items that may cause turbulence in the
humidification section, i.e.: face by-pass dampers, air blender,
leading elbows, etc.