Frequently Asked Questions; Testing & Warranty - Carrier 42AM ATEX serie Installations-, Betriebs- Und Wartungsanleitung

8 - FREQUENTLY ASKED QUESTIONS

Questions/Problems
I can't obtain the stated flow rate.
The heating capacity is insufficient
My 42AM unit is making an unusual noise
The fan motor assembly is consuming more
current than the value indicated on the data
plate
The impeller does not turn at all
9 - TESTING & WARRANTY
All our units are tested and proven before leaving the factory.
They are guaranteed against all manufacturing defects. CARRIER shall not be held liable for any type of corrosion.
The motors are not covered by the warranty in cases of incorrect electrical connection or inadequate protection.
Under no circumstances must the fitter carry out work on the motor. This will invalidate any future claims on the warranty.
The device complies with the CE marking, allowing free movement throughout the territory of the European Union. This marking is a
guarantee of security and protection of people.
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Possible causes
The impeller is not turning in the correct
direction.
The coil is fouled
The impeller is not turning in the correct
direction.
The flow rate (or the water temperature)
supplied by the 42AM is not sufficient
Dirt has accumulated on the impeller, throwing it
off balance and causing it to make an
unbalanced noise.
The fan motor assembly is not sufficiently
secured to the casing and the assembly
vibrates.
The impeller is not turning in the correct direction
The coil is fouled, the motor goes into
overheated mode and the motor circuit breaker
cuts the electrical supply to it.
Remedies
See "Commissioning" section
See "Maintenance & Servicing" section
See "Commissioning" section
Refer to the thermal, aeraulic and acoustic
performance selections made by your design
office.
See "Maintenance & Servicing" section"
See "Maintenance & Servicing" section"
See "Commissioning" section
See "Commissioning" and "Maintenance &
Servicing" sections