CLIVET WSAN-XES 18.2, Инструкция по установке, использованию и техническому обслуживанию, Страница: 28 / 52

28 WSAN-XES 18.2-35.2 M0SM40N17-04
parameters as indicated in the “electrical connections”
section.
Check that probes and optional components are
connected and enabled with the respective parameters
(“electrical connections” section and following pages).
Pump manual start
To be done only during the course of the first start-up,
for flow switch/differential pressure switch test.
To start the pump, connect as in fig. 2.
At the end of the test, restore the connection as
in fig. 1
ELECTRICAL CIRCUIT
Verify that the unit is connected to the ground plant
Check the conductors tightening: the vibrations caused
by handling and transport might cause loosing
Feed the unit by closing the sectioning device, but
leave it on OFF.
Check the tension and line frequency values which
must be within the limits : 400/3/50 +N +/- 6%
Control the unbalancing of the phases: it must be lower
than 2%
Example:
400 - 6% = 376
400 + 6% = 424
The working out of the limits can cause irreversible
damages and voids the warranty
Compressor crankcase heaters
Power the heating elements of the compressor oil for at
least 8 hours before the compressor starts:

at the first unit start-up

after each prolonged period of inactivity
1. Power the heaters: isolator switch on 1 / ON.
2. Check the power input to ensure the heaters are
working.
3. Start only if the temperature of the compressor casing
on the bottom is at least 10°C higher than the outdoor
temperature.
Do not start the compressor with the crankcase oil below
operating temperature.
VOLTAGES
Check that the air and water temperatures are included in
the operating limits. Refer to “Control” section for the
indications on the control system.
Start-up the unit.
With operating unit, i.e. in stable conditions and next to
the operating ones, check:

supply voltage

total absorption of the unit

absorption of the single electric loads
REMOTE CONTROLS
Check that the remote controls (ON-OFF etc) are
connected and, if necessary, enabled with the respective
Check evaporator water flow rate
Check that the difference between the temperature of
exchanger return and supply water corresponds to
power according to this formula:
unit cooling power (kW) x 860 = Dt (°C) x flow rate (L/h).
The cooling power is shown in the table of the
GENERAL TECHNICAL DATA included in this manual,
referred to specific conditions, or in the tables on
cooling
PERFORMANCE in the TECHNICAL BULLETIN
referred to various conditions of use.
Check for water side exchanger pressure drops:

Determine the water flow rate.

Measure the difference in pressure between
exchanger input and output and compare it with the
graph on WATER SIDE EXCHANGER PRESSURE
DROPS
The measurement of pressure will be easier if pressure
gauges are installed as indicated in the DIAGRAM OF
SUGGESTED WATER CONNECTIONS .
Scroll compressor
Scroll compressors have only one rotation direction.
In the event it is reversed, the compressor is not
immediately damaged, but increases its noise and
jeopardises pumping.
After a few minutes the compressor shuts down due to
the thermal protection tripping.