9
TEST RUNNING
6. TEST RUNNING
6.1 Final Installation Check
Inspect the installation work according to all documents and drawings. Table 2 shows the minimum
checkpoints.
Table 2. Installation Check List
INSTALLATION WORK CHECK LIST
1.Is the unit solidly mounted and leveled?
2.Is the installation location adequate?
Space for Condenser Air Flow
Space for Maintenance Work
Noise and Vibration
Sunshine and Rainfall
Appearance
3.Is the ducting work adequate?
Filter
Soundproofing
Size and Length
Insulation
4.Are the condensate drain lines properly arranged?
Trap
Drain Ditch
5.Is the electrical wiring system adequate?
Wire Size
Tightened Connections
Switch Size
Operation Control Devices
Fuse Size
Safety Devices
Voltage
Hz
6. Have the shipping washers been removed from the rubber-mounted compressor?
6.2 Preparation
Tools and Instruments
–
High and Low
Pressure Compound Gauge(s), An Electric Tester,
and General Tools.
Preparation
–
Confirm that the system switch on
the room thermostat is at the OFF position.
Pressure Gauges
–
Equip high and low pressure
compound gauges according to Fig. 11.
Thermostat
–
Set the thermostat at a lower
temperature than the room temperature.
6.3 Test Running
Test running should be performed as follows,
when the unit is wired according to the HITACHI
standard wiring label.
1. Set the operation switch to the
FAN
position
and the system switch to the
ON
position, and
the evaporator fan will start immediately.
Check the rotation direction, fan speed and air
flow quantity through the evaporator.
2. Set the operation switch to the COOL position,
and the compressor and condenser fans will
start 3 minutes after this operation (refer to Fig.
9).
3. After system operation has become stabilized,
check the suction and discharge pressures on
the compound gauges
4. Check the operating voltage, phase balance
and operating current.
5. Check to ensure that the thermostat functions
properly.
6. Check to ensure that the control and
protective devices function properly (refer to
Table 3).
