CLIVET WSAT-YES 18.2-20.2 User Manual

29
WSAN-YES 18.2-35.2
M0ST10N19-00
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 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.
Antifreeze solutions
Weight of glycol (%) 10 20 30
Freezing temperature°C -3,9 -8,9 -15,6
Safety temperature +1 -4 -10
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
 Power the heaters: isolator switch on 1 / ON.
 Check the power input to ensure the heaters
are working.
 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.
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.
7 START-UP

CLIVET WSAT-YES 18.2-20.2 Specifications

General

Brand	CLIVET
Model	WSAT-YES 18.2-20.2
Category	Chiller
Language	English