MT86H
Operation
and
Maintenance
Manual
131
Maintenance
items
Description
Maintenance
interval
Weekly
Monthly Bimonthly Quarterly
Yearly
Electrical
element
Connector
Check
clip
plug
for
looseness.
+
+
Thermistor
switch
Check
if
it
works
normally.
+
Magnetic
clutch
Check
if
it
meets
specified
requirements.
+
Magnetic
clutch
bearing
Replace
it
if
it
cannot
rotate
stably.
+
Intake
filter
Paper
filter
element
Check
it
for
dirt.
Clean
or
replace
it
according
to
specific
conditions.
Note:
“+”
indicates
that
adjustment
is
required
and
do
repair
if
necessary;
“
‐
”
indicates
that
replacement
is
required.
4.9.5
Fault
diagnosis
and
troubleshooting
list
S/N
Symptom
Probable
causes
Solutions
1
High
pressure
is
low
System
leaks.
Do
leakage
detection
and
repair.
Air
return
valve
is
closed.
Open
it.
There
is
a
lack
of
refrigerant.
Add
refrigerant.
The
air
return
valve
of
compressor
leaks.
Replace
the
valve.
The
leaf
valve
of
compressor
is
damaged.
Replace
it.
2
High
pressure
is
too
high
There
is
air
in
the
system.
Refill
the
system
with
refrigerant.
The
condenser
is
blocked.
Clean
the
condenser.
The
exhaust
valve
is
closed.
Open
it.
There
is
excessive
refrigerant.
Discharge
the
extra.
3
Low
air
return
pressure
There
is
a
lack
of
refrigerant.
Add
refrigerant.
The
compressor
piston
is
worn.
Repair
it.
The
compressor
cylinder
gasket
leaks.
Replace
the
cylinder
gasket.
The
hose
is
twisted
or
squeezed
flat.
Replace
the
hose.
The
air
return
valve
of
compressor
leaks.
Replace
the
valve
plate.
There
is
moisture
in
the
system.
Replace
the
air
drier.
Summary of Contents for MT86H
Page 9: ...MT86H Operation and Maintenance Manual 1 Chapter I Safety ...
Page 10: ...MT86H Operation and Maintenance Manual 2 ...
Page 18: ...MT86H Operation and Maintenance Manual 10 ...
Page 19: ...MT86H Operation and Maintenance Manual 11 Chapter II Product Introduction ...
Page 20: ...MT86H Operation and Maintenance Manual 12 ...
Page 25: ...MT86H Operation and Maintenance Manual 17 Chapter III Operation ...
Page 26: ...MT86H Operation and Maintenance Manual 18 ...
Page 64: ...MT86H Operation and Maintenance Manual 56 ...
Page 142: ...MT86H Operation and Maintenance Manual 134 ...
Page 143: ...MT86H Operation and Maintenance Manual 135 Chapter V Maintenance ...
Page 144: ...MT86H Operation and Maintenance Manual 136 ...
Page 160: ...MT86H Operation and Maintenance Manual 152 3 Lubrication diagram ...
Page 161: ...MT86H Operation and Maintenance Manual 153 Chapter VI Annex ...
Page 165: ...157 6 5 Schematic diagram of electrical system ...