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Air in the differential water pressure switch could cause mal-
functions to occur.
It may be wise to bleed this air. To do so, simply loosen the
nut measure on the bottom of the pressure switch (approx.
one-half turn until the air vents out) and retighten it. Then check
for any leaks.
To keep your system running smoothly and, more specifically, if your
Aqualis 2
is installed at a high point, you must
bleed the air contained inside it at the time of commissioning. This can be done by opening the manual bleed valve
(located under the unit cover) when turning the unit on or by installing a section of the water line and an automatic
bleed valve over the unit.
Commissioning:
The differential water pressure switch is a safety component.
It is strictly prohibited to bypass it; doing so will create a
safety hazard to property and people.
3.3 Bleeding the air
3.4 Differential water pressure switch
d
OUTLET
c
;
INLET
4. SERVICING AND MAINTENANCE
Unit maintenance
Before attempting to service the unit,
disconnect it from its main power source.
Fans
The fans are fastened to the panel by four plastic M6x20 screws.
Caution: Do not tighten these screws to a torque of greater than 1 Nm.
If you do not have a torque wrench, tighten them until they are snug then tighten a further quarter turn.
Compressor
The compressor is fastened to the platform by four 8 mm dia. screws.
Caution:
Do not tighten these screws to a torque of greater than 13 Nm.
If you do not have a torque wrench, tighten them until they are snug then tighten a further three-quarters of a turn.
Circulator
The circulator on every unit, regardless of size, is fitted with release screws. It may be necessary to use them when starting the
unit or when turning it off for extended periods of time.
Mandatory annual checks
Leaks on the refrigeration circuit. Check the glycol content (if used). Check the water filters for dirt.
Clean the coil:
- Take the cover off the unit
(see Figure 1, Section 2.3).
- Using a vacuum cleaner, carefully clean the coil and the entire blower compartment.
- Put the cover back in place.
Clean the drain pan.
Check for any loose electrical connections.
Recommendations
Take the operating readings and perform the checks listed in the table
(Section 4.1) at least once a year.
Pressure or temperature measurements requiring the use of gauges should be taken only if the unit malfunctions and doing so
is recommended by CIAT’s
A
fter-
S
ales
S
ervice.
To keep your unit running smoothly and to benefit from the warranty, take out a maintenance contract with your installer or an
approved maintenance company.
With the unit running, check it thoroughly for any abnormal visual signs or noises.
Check for any water or oil leaks around the unit and make sure the condensate water drains correctly.
Nut at bottom
