Test Run; Protection And Control Devices - Hitachi RPIZ-0.8HNATN1Q Operation Installation Maintenance Manual

8. Test Run

Test run should be performed according to this Manual.
WARNING
● Do not operate the system until all the check points
are cleared.
(A) Check to ensure the electrical resistance between
terminal and ground is more than 1 MΩ. If this is
not the case, do not operate the system until the
electrical leakage is found and repaired.
(B) Check to ensure the stop valves of outdoor unit are
fully opened, and then start the system.
(C) Check to ensure the switch on main power source
has been ON for more than 12 hours
to warm the compressor by heater.
9. Protection & Control Devices
Indoor Unit
Temperature Controller on
Fan Motor of Indoor Unit
Capacity of Fuse on Indoor Unit Control
Circuit
Freeze Protection Temperature
Set Temperature Difference
Capacity of Indoor Unit (HP)
Cut-out
Cut-in
Cut-out
Cut-in
● 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 temperatures of
compressor chamber and the pipes at the
discharge side are higher than 90°C.
(B) Do not push the button of the AC
contactor. It will cause a serious
accident.
0.8~2.0
℃
130±5
℃
90±15
A
℃
℃
℃
9
2.3~2.5
130±5
85±15
5
0
14
2