Test Run - Hisense AVWW-28UCSA Installation & Maintenance Manual

7. Test Run

Test run should be performed according to the
Table 7.1 on page 24. And use the Table 7.2 on
page 25 for recording test run.
Check Water Pipe Connection Before Test Run
(A) Before test run, reconfirm that all water pipe
work is in correct states, water filter has been
settled on water entry side and water flow switch
has been installed properly.
(B) Open shut-off valve and make sure that the plate
heat exchanger is filled with circulating water.
Start water pump and open exhaust valve to
ensure that all air is exhausted from pipe.
(C) Read Pressure gauges and thermometers on
water inlet and outlet to confirm normal water-line
operation, proper water flow rate and correct
switching in water system.
(D) After the initial test run, clear water filter and
ensure no filter clogging.
Do not operate the system until all the check
points have been cleared.
(A) Check to ensure that the refrigerant piping and
transmission between outdoor unit and indoor
unit are connected to the same refrigerant cycle.
If not, it will cause an abnormal operation and
a serious accident.
(B) Check to ensure that the electrical resistance
more than 1 megohm. If not, do not operate the
system until the electrical leakage is found and
repaired.
(C) Check to ensure that the stop valves of the outdoor
unit are fully opened, and then start the system.
(D) Check to ensure that the switch on the main power
source has been ON for more than 12 hours to
warm the compressor oil by the oil heater.
Do not operate the unit within 4 hours after power supply.
In case of operating within 4 hours, release the protection
control as follows.
1. Supply power to the outdoor unit and indoor units.
2. Wait for 30 seconds.
3. Push PSW1 on PCB more than 3 seconds at the
same time.
Pay attention to the following items while the system is
running.
(A) Do not touch any of the parts by hand at the
discharge gas side, since the compressor chamber
and the pipes at the discharge side are heated higher
than 90 .
(B) DO NOT PUSH THE BUTTON OF THE
MAGNETIC SWITCH(ES). It will cause a
serious accident.
Do not touch any electrical components for
more than three minutes after turning OFF
the main switch.
Check that the refrigerant piping setting and electrical
wiring setting are for the same system by operating the
indoor unit one by one.