IOM SYSAQUA 45 125 (IOM AQA 05 N 3GB)

English
39SYSAQUA
14.2. OPERATING CHECK LIST
14.2.1. GENERAL
Cheek for any unusual noises or vibration in the running components.
14.2.2. PHASE ROTATION PROTECTION
If the phase of the power supply are not correct, the phase rotation protection device will prevent the
machine from starting.
14.2.3. ELECTRICAL
14.2.3.1. SET POINTS
1. Compressors circuit breaker settings.
2. Pump Circuit Breaker and Fan Circuit breaker settings.
NOTE : The outdoor fan motor is equiped with an internal safety device with automatic reset.
14.2.3.2. OPERATING VOLTAGE
Recheck voltage at unit supply terminals.
14.2.3.3. CONTROL
1. Verify that on/off switch and pump 1/2 switch works perfectly.
2. Check unit is wired for correct control of unit fan, cooling and heating modes.
3. Verify all sensor values available with the controller display.
14.2.4. HYDRAULIC CIRCUIT
The unit must work with a water ow rate in agreement with recommended values displayed in the tablein
§ PHYSICAL CHARACTERISTICS, page 8. Running the unit with a low water ow is dangerous, as it could
result in irreversible damage to the components as well as to the plate exchanger. If the unit is run with
insufcient ow, its performance will not be optimum.
1. Check the lter's cleanliness
2. Check the presence and position of the stop valves to isolate the unit during maintenance periods
3. Adjust the water ow to specications. (see graphs appended).
 Check pressure at the inlet and outlet of the plate exchanger
 Determine the water ow using a owmeter or the load loss of the plate exchanger
4. Check the installation is protected against frost (heat insulation, glycol ethylene percentage of the
unit if its presence is necessary...)
5. Check that the bleeder present in the unit has actually been opened.
In the case of double pump option, both pumps never operate simultaneously
: second pump will be started only in case of failure of the rst one.
Both pumps are marked with numbers 1 and 2 corresponding to the pump
selection switch in the unit electrical box.
The pump selection is not automatic. A qualied technician must operate
manually. (Refer to the § PROCEDURE TO SWITCH FROM ONE PUMP TO OTHER,
page 45)
14.2.4.1. PUMP MANAGEMENT