Restart Of Test Run - Hitachi RCUE40AG2 Service Manual

Test run

2.3. Restart of Test Run

After a series of items are confi rmed from the beginning to the end of test run, restart the unit and check also the
following items.
Items
Voltage
High pressure
Low pressure
Operation:
operation register Ambient temperature DB, WB
Chilled water inlet temperature
Chilled water outlet temperature
Activation temperature of chilled water
temperature controller
Activation temperature of warm water
temperature controller
(air-cooled type)
Frequency of compressor start-up and
stop
Is there no abnormal vibration and
Refrigerant
contact in pipe or capillary?
system:
cycle in general
Frost in compressor
compressor
Is electrical device (relay etc) activated
Electrical system:
normally?
electrical device
Is activation time of timer normal?
Is there no trouble in discharge water
pressure nor in operation noise?
Water system:
Pump
Is there any clogging in strainer?
pag. 25
SMGB0003 rev.0-01/2007
Check point
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Criteria and method
Momentary voltage at
compressor start-up is over
rated voltage ±15%
Unbalance of voltage
Operation voltage is within
makes current value
rated voltage: ±10%
change signifi cantly.
Unbalance between voltage:
within 2%, in any case, within within 2%, in any case, within
3%.
See the diagrams in sub-
chapter 2.2.2 and 2.2.3.
See fi gures 4 and 5.
Confi rm the activation
temperature changing the
setting temperature
Below 6 times in a hour and
non stop operation time is
over 5 minutes.
Confi rm
Confi rm if there is too much
Caution in mid-term
frost.
Confi rm if there is no strange
activation like noise, spark or
chattering.
If it needs to adjust
it with water volume,
adjust it in the
discharge side of
pump.
Re-check if there is no
dust nor foreign matters in
strainer.
Remarks
2 2