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Fin edges are sharp and can cause injury hazard. Avoid contact with them.
Caution
Avoid damaging the aluminium ns during cleaning. Never use pressurized water without a wide
diffuser. Concentrated and/or rotating water jets are strictly forbidden.
Caution
37SysAqua
Clean the air exchanger using a special product for aluminium-copper coils and rinse with water. Do not use
hot water nor steam, as these may increase the refrigerating uid's pressure.
17.3.1.4. AIR COOLED CONDENSER
Condenser coils are composed of copper tubes and aluminium ns. In case of leaks due to damage or
shock, the coils must be repaired by one of the authorized Support Centres. To guarantee the best possible
operation of the condenser bank, the condenser surface must be maintained as clean as possible, and it
must be void of foreign materials (leaves, wires, insects, slag, etc.). A dirty coil will see its absorbed electrical
power increase. In addition, condensation pressure could increase and trigger a high pressure alarm.
17.3.2. HYDRAULIC CIRCUIT
17.3.2.1. PLATE HEAT EXCHANGEUR
Verify the pressure difference between the inlet and the outlet of the heat plate exchanger. If the water
pressure and ow rate values do not correspond to the pressure loss curves available in § PRESSURE
LOSSES, page XVIII , the heat plate exchanger may be foul up. To clean it, use a non corrosive solvent to
remove calcareous deposits. The equipment used for the external water ow, the quantity of solvent and
safety measures applied must be approved by the company supplying the cleaning products, or the one
performing these operations.
17.3.2.2. PROCEDURE TO SWITCH FROM ONE PUMP TO OTHER
The procedure to switch from one pump to the other is the
following in case of pump 1 failure (for example) :
1. Turn the main power switch of the SysAqua in position OFF
2. Close the upstream and downstream valves of the pump 1
(see photo)
3. Open the upstream and downstream valves of the pump 2
4. Toggle the pump selection switch in position 2
5. Turn the main power switch of the SysAqua in position ON
to restart.
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