For Movement And Maintenance - Mitsubishi Electric MFZ-KA25VA Installation Manual

5-5 CHECKING AFTER INSTALLATION
After finishing the installation, check the following items and mark the
Is the specified power supply voltage used?
Is the power line equipped with the circuit breaker?
Have the ends of the indoor/outdoor connecting wire been properly inserted into the terminal blocks?
Has the indoor/outdoor connecting wire been secured firmly?
Are the power supply cord and indoor/outdoor connecting wire connected directly to the units (no intermedi-
ate connections)?
Is the earth wire longer than the other wires so that it will not become disconnected when tension is applied?
Is the earth wire connected properly?
Are the pipes designed for use with R410A or do they have the specified thickness?
Has the leak test been carried out for the pipe connections?
Has air purging been carried out?
Are the stop valves open fully?
Is the drain hose properly installed?
Has water been poured through the drain hose to confirm proper drainage?
Are the pipes at the rear of the unit bundled with felt tape (for left and left-rear piping only)?
Can the installation location bear the weight of the unit and not amplify its vibration or noise?
Is the area under the unit free of objects that block the air outlet?
Are the vertical and horizontal vanes closed securely?
Is the front panel installed securely?
Has the test run been carried out?
Has the drain work been performed properly and are there no bubbling sounds?
Have all of the WARNING and CAUTION items in "1. THE FOLLOWING SHOULD ALWAYS BE
OBSERVED FOR SAFETY" been checked?
5-6 EXPLANATION TO THE CUSTOMER
•
Using the OPERATING INSTRUCTIONS, explain the following to the customer, how to control temperature,
how to remove the air filters, how to remove or put the remote controller in the remote controller holder, how
to clean, precautions for operation, etc.
•
Recommend the customer to read the OPERATING INSTRUCTIONS carefully.

6. FOR MOVEMENT AND MAINTENANCE

6-1
next to each item. When relocating or disposing of the air conditioner, pump down the system following the procedure below so
that no refrigerant is released into the atmosphere.
1 Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor
unit.
2 Fully close the stop valve on the liquid pipe side of the outdoor unit.
3 Close the stop valve on the gas pipe side of the outdoor unit almost completely so that it can be easily closed
fully when the pressure gauge shows –0.101 MPa [Gauge] (0 kgf/cm
4 Start the test run operation in COOL MODE by pressing EMERGENCY OPERATION switch once.
5 Fully close the stop valve on the gas pipe side of the outdoor unit when the pressure gauge shows 0.05 to 0
MPa [Gauge] (approx. 0.5 to 0 kgf/cm
6 Stop the test run operation by pressing the EMERGENCY OPERATION switch twice.
11
PUMPING DOWN
2 ).
2 ).