Maintenance; Periodic General Maintenance; Filters; Cleanable Filters - Black Box CRCW-12 User Manual

Cold row chilled water (cw)

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Chapter 5: Maintenance

5. Maintenance

Systematic, periodic general maintenance of the Cold Row unit is required for optimum system performance. General

maintenance should include, but is not limited to the following: replacing filters, tightening electrical connections, checking the

condensate pans and drain line to ensure they are free of debris, cleaning the interior of the unit, and inspecting the units'

components visually.

Use copies of the Periodic General Maintenance Checklist in this manual (see Appendix A.2) to record periodic general

maintenance inspections. For assistance, contact Black Box Technical Support. Ensure adherence to all safety statements while

performing any type of maintenance.

WARNING

This equipment should be serviced and repaired by a journeyman or a qualified refrigeration technician only.

WARNING

This unit uses high-voltage equipment with rotating components. Exercise extreme care to avoid accidents and

ensure proper operation.

Hazardous voltage will still be present inside the electric box at the motor start protectors and circuit breakers, even with the unit

turned off at the microprocessor controller. To isolate the unit for maintenance, turn off power at the main power disconnect

switch. Always disconnect main power prior to performing any service or repairs.

WARNING

Turn off power to the unit unless you are performing tests that require power. With power and controls energized,

the unit could begin operating automatically at any time. To prevent personal injury, stay clear of rotating

components as automatic controls may start them unexpectedly.

The filter is usually the most neglected item in an air-conditioning system. To maintain efficient operation, check the filter every 3

to 6 months and clean or replace it as required.

NOTE: Conditions of spaces vary. Extremely dusty environments may require more frequent filter maintenance.

The air filters are located behind the air intake grille at the rear of the cabinet. To access the filters, unlatch the rear access panel

at the top and remove it from the cabinet.

Cleanable filters are spring-loaded in the holding trays in the access panel. Using a flat-head screwdriver, gently push the filters to

one side and remove the old filters from the trays (Figure 5-1).

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