Chapter 10 Maintenance & Spare Parts 43
Liebert.CRV Series Air Conditioner User Manual
10.5 Condensate Drain And Condensate Pump Systems
10.5.1 Condensate Drain
Check and clear obstructions in tubing during routine maintenance.
10.5.2 Condensate Pump
The position of the condensate pump is shown in Figure 10-4.
Figure 10-4 Condensate pump
Clean the condensate pump following the procedures below:
1. Disconnect power to unit using disconnect switch.
2. Check and clear obstructions in gravity lines leading to condensate pump.
3. Remove sump and clean with a stiff nylon brush and flush with water.
4. Inspect and clear clogs in discharge check valve and float mechanism.
5. Reassemble and check for leaks.
10.6 Air-Cooled Condenser And Drycoolers
The cleaning procedures are as follows:
1. Clear coil surface of all debris that will inhibit airflow.
2. Check for bent or damaged coil fins and correct.
3. Do not permit snow to accumulate around or under outdoor unit.
4. Periodically consider commercial cleaning of coil surface.
5. Inspect fans, motors and controls for proper operation.
6. Check all piping and capillaries for proper support.
7. Inspect for leaks.
10.7 Electrical Heaters
The cleaning procedures are as follows:
1. Inspect and clean reheat elements.
2. Inspect and tighten support hardware.
10.8 Refrigeration Circuit
When repairing the refrigeration circuit, collect all refrigerant in a conditioner, do not allow it to escape.
When either removing (for repairs) or charging refrigerant this must always be done on both the high and low
pressure sides of the compressor simultaneously.
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