Test Run - Mitsubishi Electric PUMY-P200YKM Installation Manual

Test run

1 Be ore test run
A ter co pleting installation and the wiring and piping o the indoor and
outdoor units chec or re rigerant lea age looseness in the power suppl
or control wiring wrong polarit and no disconnection o one phase in the
suppl
Use a 00- olt M-oh tester to chec that the resistance etween the power
suppl ter inals and ground is at least 1 M
Do not carr out this test on the control wiring low oltage circuit ter inals
arning
Do not use the air conditioner i the insulation resistance is less than 1 M
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
ing in the compressor. This is not a malfunction. Perform the following procedures.
1. Remove the wires from the compressor and measure the insulation resistance of
the compressor.
dropped due the accumulation of refrigerant in the compressor.
3. After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
2 Test run
2 1 Using re ote controller
Refer to the indoor unit installation manual.
unit operates properly following the installation manual attached to the unit.
erroneous connection, if any, of the refrigerant pipes and the connecting wires.
* The compressor operation is not available for 3 minutes at least after the
power is supplied.
of low outside air temperature.
A out the restart protecti e echanis
Once the compressor stops, the restart preventive device operates so the compressor
will not operate for 3 minutes to protect the air conditioner.
Re rigerant collecting Pu p down
Perform the following procedures to collect the refrigerant when moving the indoor
unit or the outdoor unit.
1 Turn off the circuit breaker.
2 Connect the low pressure side of the gauge manifold to the service port of the
gas side stop valve.
3 Close the liquid stop valve.
4 Supply power (circuit breaker).
* Start-up of the indoor-outdoor communication takes about 3 minutes after the
power (circuit breaker) is turned on. Start the pump-down operation 3 to 4 minutes
5
run for cooling operation. The compressor (outdoor unit) and ventilators (indoor
and outdoor units) start operating and test run for cooling operation begins.
Immediately after performing the test run for cooling operation, set the outdoor
sure to switch it to OFF after pump down is completed.
up for four hours.
(The time necessary to warm up the compressor varies according to atmospheric
conditions and refrigerant accumulation.)
compressor must be warmed up at least 12 hours to prevent breakdown.
Caution
The co pressor will not operate unless the power suppl phase connection
is correct
- Turn on the power at least 12 hours e ore starting operation
- Starting operation immediately after turning on the main power switch can result
in severe damage to internal parts. Keep the power switch turned on during the
operational season.
The ollowings ust e chec ed as well
when the outdoor unit is faulty.
2 2 Using S in outdoor unit
Note
In case o the test run ro outdoor unit all indoor units operate There ore
ou can not detect an erroneous connection o re rigerant pipes and the
connecting wires I it ai s at detection o an erroneous connection
to carr out the test run ro
re ote controller
OFF
the inside of the outdoor unit. The noise is coming from the check valve due to the
small difference in pressure in the pipes. The unit is not faulty.
The test run operation ode cannot e changed
the test run To change the test run operation
the test run DIP switch S
resu e the test run switch S
6 Fully close the gas stop valve when the pressure reading on the gauge drops
0.05 - 0.00 MPa (approximately 0.5 - 0.0 kgf/cm
7
8 Turn off the power supply (circuit breaker).
* If too much refrigerant has been added to the air conditioner system, the pres-
sure may not drop to 0.05 MPa (0.5 kgf/cm
collecting device to collect all of the refrigerant in the system, and then recharge
the system with the correct amount of refrigerant after the indoor and outdoor
units have been relocated.
arning
hen pu ping down the re rigerant stop the co pressor e ore disconnect-
ing the re rigerant pipes The co pressor
oreign su stance such as air enters the s ste
re ote controller with re erence to
Cooling operation
Heating operation
DIP switch S
ode during the test run stop
-1 A ter changing the test run operation
-1
2 )
). If this occurs, use a refrigerant
2
a urst and cause in ur i an
-
e sure
2 1 Using
-2 during
ode
1