Periodical Check - Midea Aqua Tempto Power Series Manual

Aqua tempo power series tropical air-cooled scroll chiller 50Hz

2. Periodical check

Maintenance Items
Noise
General
Vibration
Voltage
Clean
Calm
Appearance
Insulation material
flakes
Water leak
Noise
Insulation
resistance
Hock proof rubber
Compressor
gets old
Medium check
Medium check
Fan
Fin-coil heat
exchanger
Clean frequency
Water flow of the
user side
Temperature
Antifreeze
concentration
Water quality
Shell land tube
heat exchanger
Purity
Drainage
High and low
Action
pressure switch
Pressure Gauge Finger
Globe valve Action
Refrigeration Refrigeration
circle media leak
Insulation
resistance
Electrical
Wire contact
machine control
Assistant relay
Time-limited relay
188
Frequency Qualify Standards (Settlement)
Judge whether there is abnormal sound by
Anytime
hearing;
Watch whether the swings of distribution pipes
Anytime
and components are too large
Anytime Rating voltage is within ± 10%
Anytime Keep it clean anytime
Anytime Lock each snail
Anytime Stick it
Once/ Month Check whether the exhaust water pipe blocks
Whether there is abnormal sound when starts
Anytime
up, runs or stops
Above 5MΩ is required when testing with
Once/ Year
DV500V high resistance meter
Once/ Year Flexible when pressed with hands is qualified
Once/3000
Pay attention to the noise libation and oil level
hours
Once/6000 Confirm the action of safety device and
hours protection device
Normal wind amount, high pressure when
Anytime refrigerating and low pressure when heating
within the normal range
Normal wind amount, high pressure when
refrigerating and low pressure when heating
Once/Month
within the normal range
Anytime Within ± 5% of the standard
Anytime Within the standard
Once/Month Make sure it is set above the concentration
Once/Month Within the standard
The low pressure is within the standard when
refrigerating
Anytime
The high pressure is within the standard when
heating
Anytime Drain all the water if it is not used for a long time
Check according to "Protection Devices Action '
Once/Month
Once/ Half of
Compare with correct pressure gauge
a year
Once/Month Smooth action on globe valve switch
Check whether there is refrigeration media
leakage inside the unit or at the distribution pipe
connecting points. Let out all the water inside the
Once/Month
shell-and-tube heat exchanger, and check
whether there is any leakage at the water inlet or
outlet.
Above 1MΩ is required when testing with
Once/Month
DV500V high resistance meter.
Insulation layer of the wire must be under good
Once/Month contact condition, without damage, bolt well
fixed.
Once/Month No abnormal action
Once/Month Act according to the time set
MCAC-ATSM-2014-09
Note
Watch from one meter
away from the center of
the unit;
Refer to the physical
characteristics of
cold-resistance liquid
Refer to water quality
furring relations drawing
Drain water in the
distribution pipe
Whether the match
point is good
Use the electronic leak
detector, or blowtorch
leak detector, or soap
water.