Replacing The Welded Filter Dryer With The Threaded Filter Dryer - Huawei NetCol5000-A025 User Manual

NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width)
Figure 6-14 Installing the filter dryer
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Step 7 Reinstall the liquid pipe NTC temperature sensor.
Step 8 Perform a leakage test with nitrogen again.
Step 9 After checking that the smart cooling product does not leak, vacuumize the smart
cooling product and charge refrigerant.
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6.5.7 Replacing the Welded Filter Dryer with the Threaded
Filter Dryer
Prerequisites
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Issue 15 (2020-12-10)
Apply red glue to the third to second last thread circles of the outer screw
thread counting from the pipe outlet inward. Use two 27# adjustable
wrenches to secure the filter dryer nut and pipe nut, respectively. Then use a
36# adjustable wrench to tighten the adjustable nut.
Secure the hold hoop in reverse order of removing it.
The welded filter dryer needs to be replaced.
A spare threaded filter dryer of the same model is available and functional.
The spare threaded filter dryer consists of a filter dryer, entrance elbow (with
a thread connector), and exit straight tube (with a thread connector).
Tools: welding equipment, refrigerant retrieval device (configured based on
local conditions), Phillips screwdriver, nitrogen cylinder, refrigerant tank,
vacuum pump, pressure gauge, leather hose, protective gloves, two 27#
adjustable wrenches, 36# wrench
Preparation: Power off the indoor unit and reclaim all refrigerant from the
system.
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6 System Operation and Maintenance
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