Procedure And Outline - Daikin CMSQ200A7W1B Service Manual

SiBE28-805
1.2

Procedure and Outline

Follow the following procedure to conduct the initial test operation after installation.
1.2.1 Check Work Prior to Turn Power Supply On
Check the below items.
Power wiring
•
Control transmission wiring
•
between units
Earth wire
•
Check on refrigerant piping /
insulation materials
Check airtight test and vacuum
drying.
Check on amount of refrigerant
charge
Check the stop valves for
conditions.
Test Operation
Is the wiring performed as specified?
Is the designated wire used?
Is the wiring screw of wiring not loose?
Is the grounding work completed?
Is the insulation of the main power supply circuit deteriorated?
Use a 500V megger tester to measure the insulation. (*1)
Do not use a megger tester for other circuits than 200V (or
•
240V) circuit.
*1:Measure to be taken against decreased insulation resistance in
the compressor
If the compressor is left to stand for
an extended period of time after the
refrigerant charge with the stop valve
open and the power supply OFF, the
refrigerant may be mixed in the
compressor, thus decreasing the
insulation resistance.
Heat the compressor as shown on
the right and then recheck the
insulation.
Is the pipe size proper?
Is the pipe insulation material installed securely?
Liquid and gas pipes need to be insulated. (Otherwise causes
water leak.)
Have the airtight test and the vacuum drying been conducted
according to the procedure in the Installation Manual?
Is a proper quantity of refrigerant refilled?
The following two methods are available for refilling of the
refrigerant.
(1) Use the automatic refrigerant refilling function.
(2) Calculate a refrigerant refilling quantity.
Check to be sure the stop valves are under the following
conditions.
Liquid-side stop valve
Open
Terminal
Gas-side stop valve
Open
Test Operation
Dryer
(1000W)
65