Haier MRV II Instruction Manual page 39

1.2.4.3Inspection flowchart before commissioning
1.2.4.3.1 Outdoor
8HP,10HP: confirm gas/liquid
stop valve are open, oil/ pressure
equalization valve are close
if not, please check
if the master unit
and slave unit are
electrified, if the
communication wire
is normal, and if the
unit No. is repeated
check if the piping and branch
pipe is installed properly
according to the use manual
confirm additional
refrigerant amount
confirm stop valve state
confirm if the indoors in one system are
electrified accordantly, if signal wire shielded
layer of all indoor and outdoor units is
connected together, be grounded on outdoor at
single point
pull out the temp. sensor TE from the master
unit connecting board, and check indoor and
outdoor power supply, if that is ok, then
electrify system
confirm outdoor group capacity: if the HP
displayed on master unit digital tube and
the actual HP are accordant
electrify the outdoor 12 hours
in advance before trial operation
- 40 -
if they are not accordant,
please change
according to the recharging
refrigerant standard chart
more than 10HP: confirm gas/
liquid/oil equalization/pressure
equalizationstop valve are all open
if not please rework
if yes
SW3 SW4
0 2
SW5
2
Part 2