Unit installation

Use and Maintenance Manual Air-cooled water chillers and Heat Pumps R-PAE/R-PAH/EAH Rev. 1 del 03/09

Picture 44

5.7.7 Check of the gaskets on the centrifugal fans discharge

The centrifugal fans discharge is connected to the external skirt by means of a flexible gasket; the gasket must not be

damaged and must not let air pass through. In this case, its replacement is necessary, therefore contact EMICON A.C.

S. p. A. After Sales Service.

5.7.8 Compressors oil level check

Both scroll and semi-hermetic compressors are equipped with sigth glasses to check the oil level.

WHILE CHECKING THE OIL LEVEL ALWAYS MAKE SURE THE FAN SECTION IS NOT OPEN

Oil level must be checked while the unit is working in steady conditions (therefore, after at least 15-20 minutes of

operation). The oil level must be compared with the instructions shown on tags close to the sight glass; however,

at least a quarter on the bottom of the sight glass must show the oil. An excessive presence of foam means that

the thermostatic valves are not set up properly.

In case of trouble, contact EMICON A.C. S.P.A. After Sales Service.

5.7.9 Insulation condition check

All low temperature parts are heat insulated by means of muffs or of shaped plates to eliminate or reduce any

heat leak which can cause a cooling capacity reduction as well as condensing phenomena or ice formation (which

can be dangerous since in some conditions they can cause mechanical breakings). The check is of visual type;

the insulation must not be damaged, detached from the supports or cracked. Bear in mind that in time the surface

of insulating materials tends to slightly flake off without jeopardizing the insulation feature. Cracks, cuts or

detachments must be repaired immediately by sticking or taping properly.

5.7.10 Supports and bearings check

While making the check, the unit main switch must be open (“0” position) and locked. The padlock

key must be kept by the person in charge of the check.

All rotating parts are equipped with supports and bearings. Usually these parts do not need any maintenance and/or

lubrication as they are a long-life type. A direct check of these parts is only possible on fans by rotating manually the

fan wheel: its movement must be fluid, with no blockings or creakings and it must not show any lubricant leak. If any of

the mentioned cases occurs, contact EMICON A.C. S.p.A. After Sales Service for repairing it.