NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Copyright © Huawei Technologies Co., Ltd.
The crankcase heat tape starts to work when the general circuit breaker QF1 and main control
board power circuit breaker QF8 are on. Ensure that the crankcase heat tape has been
preheated for over 12 hours before starting the compressor. Otherwise, the compressor will be
damaged. Huawei will not be liable for any consequences.
Procedure
Step 1 Switch on fan circuit breaker QF6, electric heater circuit breaker QF4, humidifier circuit
breaker QF5, condensate pump circuit breaker QF9, outdoor unit general circuit breaker, and
compressor circuit breaker QF3 in turn.
Step 2 Tap Start on the main screen, and then choose Maint > Diagnostic Mode > Enter to enter
the diagnostic mode.
Step 3 Start the electric heater on the diagnostic mode page. Check that:
Do not touch the electric heater surface directly to avoid empyrosis.
1. The indoor fan rotates smoothly.
2. The electric heater generates heat.
Step 4 Close the electric heater on the diagnostic mode page. Adjust the compressor rotation speed to
3000 rpm and adjust the humidifier input to 50%.
Step 5 Adjust the compressor.
1. Open valve 3 shown in Figure 5-2 (or valves 4 and 6 shown in Figure 5-3) and charge
refrigerant only from the low-pressure needle valve. Ensure that the refrigerant is
charged in small amount or charged discontinuously. The total charging amount must
meet the calculation requirements in 5.2.1 Calculation about the Charged the Refrigerant
and Refrigerant Oil.
2. On the main screen, tap Run > Device Details > Compressor to read the suction and
discharge pressure. Check whether the suction and discharge pressure of the compressor
are within reasonable ranges. (Normal suction pressure range: 0.7–1.2 MPa; normal
discharge pressure range: listed in Table 5-3.)
Table 5-3 Normal discharge pressure ranges
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