MTA TAEevo Tech 101 - Pre-Startup Checks and Unit Startup Steps

OPERATING AND MAINTENANCE MANUAL
Chapter 6 - Starting
TAEevo Tech 015÷802 60 Hz UL
30
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
ENGLISH
EN
CHAPTER 6
STARTING
ATTENTION
Before starting this type of unit, ensure that all personnel involved have read and understood Chapter 2 “Safety”.
ATTENTION
When first starting after a stop of several days, ensure that the casing heating element of each compressor is switched
on for at least 12 hours before pressing the start button.
ATTENTION
On starting the unit:
1) If the high pressure alarm trips (b1HP/b2HP/b1hP/b2hP) without the compressor having started, stop the unit
immediately by setting it to off on the controller.
Now check the refrigerant circuit high pressure value.
2) If the Phase Monitor alarm ALc1 trips check the correct phase sequence upline from the unit. The ALc1 alarm may be
generated by tripping of the protections upline from the phase monitor.
1. Check that the unit shut-off valves are open.
2. Check that the tank has been completely filled with water and that the air has been bled out correctly.
3. Check that the ambient temperature is within the range indicated on the unit’s data plate.
4. Use the pressure gauge on the rear panel of the unit to check that the pressure is approximately 0.5 bar / 7.2 PSI
(only for closed hydraulic circuits).
5.Check that the main switch is in the OFF position (“O”).
6.Check that the unit power supply voltage is correct.
7.Power the unit by means of the line protection device.
8.Close the unit’s main switch by setting it to the ON position (“I”).
9.Check that water is flowing through the evaporator.
10.To start the unit perform the following procedure (For more information consult Chapter 7
“Electronic controller”)
From unit OFF (stand-by) press and release button to switch the unit on or off in chiller mode. With the unit
on LED is lit.
11. On three-phase power supply models make sure the compressor operates correctly (no anomalous noise and no
overheating) and check that the fans and the pump (if present) rotate in the correct direction.
If necessary, invert two phase wires of the power supply line.
12. Check that the pressure difference between the pressure gauge reading with the pump running and the reading
with the pump idle is higher than the available pressure head with the maximum pump flow rate. If the difference
is lower this means that the water flow rate is higher than the maximum permissible value. To avoid damaging the
pump increase the pressure drop in the hydraulic circuit, for example by partially closing a shut-off cock on the
pump outlet.