Safety Precaution - Mitsubishi Electric PLFY-P32VAM-E Technical & Service Manual

Revision:
1. " 10. PARTS LIST " has been modified on page 30 and 31.
Page Revise point
10. PART LIST
FUNCTIONAL PARTS
28
No.10 MOTOR CAP
10. PART LIST
FUNCTIONAL PARTS
30
No.7 POWER BOARD
10. PART LIST
FUNCTIONAL PARTS
31
No.1 DRAIN PAN
2. The description "The part name of symbol "I.B" is "SPCB" " is added on both pages of wiring diagram and part list.
1

SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R407C
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Use "low residual oil piping"
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
Store the piping to be used during installation
indoors with keep both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result.
Use ESTR , ETHER or HAB as the lubricant to
coat flares and flange connection parts.
If large amount of mineral oil enter, that can cause
deterioration of refrigerant oil etc.
[1] Cautions for service
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
Service Ref.
PLFY-P32VAM-E.UK
PLFY-P40VAM-E.UK
PLFY-P50VAM-E.UK
PLFY-P63VAM-E.UK
PLFY-P100VAM-E.UK
PLFY-P125VAM-E.UK
Incorrect Correct
— S70 E50 129
S70 E20 313 S70 E02 313
S70 E00 529 S70 E01 529
Use liquid refrigerant to charge the system.
If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.
Do not use a refrigerant other than R407C.
If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.
Use a vacuum pump with a reverse flow check valve.
The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
2