TICA P70131000000, Manual

Page: 173 / 174

173
delivery commissioning duration
S
ystem
in
form
ati
on
S
ystem
System
diagram (when
necessary)
Figures are attached (models and numbers of IDU and ODU, piping diameter and length,
amount of refrigerant)
Piping length m
Height
difference
m (ODU is above or below
IDU)
Capacity
distribution
IDU checklist
information
Checklist of wired controller is attached.
ODU
ODU
Machine
model
Manufacturing
number
Date of
production
Compressor
Machine
model
Product number
Date of
production
Ma
in
te
na
nc
e i
nf
o
rma
tion
Fault of thi
s
time
Fault (marked
by
○ )
(1) Poor insulation (2) Poor startup
(3) Power supply protection device starts
(fuse, FFB)
(4) Poor compression (5) Poor capacity control (6) Over-current (relay starts)
(7) Abnormal vibration (8) Abnormal noises (9) Temperature protection starts
(10) Refrigerant leaks (11) Refrigerant oil leaks (12) Others ( )
Time
Time of
occurrence
Time of repair Time of return
Pr
e
vio
us
rep
a
irs
1st time
2nd time
3rd time
C
o
mpre
ss
or
in
for
m
atio
n
Power supply L1-L2 L1-L3 L2-L3
Is fuse of power supply normal?
Does system refrigerant leak?
Does water in the system exceed limits? (Is time for vacuumizing the system enough?)
Is heat exchanger or filter blocked by dirt?
Never charge refrigerant from low pressure side, as it is the primary cause behind
compressor faults.
Are oil heating belt and heating belt at the bottom of compressor still connected to power
supply after compressor stops?
Are ODU installation position, piping length and height difference in line with installation
requirements?
Are system pipes properly connected?
Is the opening degree of electronic expansion valves proper?
Is temperature sensor at the top of compressor properly installed?
Are distribution terminals of compressor (U, V, W) are connected reliably?
Is AC contactor of compressor working properly? Are contacts of AC contactor oxidized or
burnt?
Does compressor refrigerant oil deteriorate? (turn black?)
Is the amount of oil in compressor normal?
Is oil-return pipe of compressor blocked? (If oil deteriorates or deposits at the bottom of oil
separator, oil-return pipe may get blocked easily)
Confirm resistance of each phase to ground:
U (M
Ω ), V (M Ω ), W (M Ω )
Confirm resistance between phases:
U-V (
Ω ), U-W ( Ω ), V-W ( Ω )
Confirm parameters after compressor is replaced (ODU checklist).
Description of other faults: