Liebert DS user manual Filters, Maintenance

Maintenance

12.0 MAINTENANCE

! WARNING

Risk of electric shock. Can cause injury or death.

Disconnect local and remote power supplies before working within.

Before proceeding with installation, read all instructions, verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power.

Follow all local codes.

! WARNING

Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment damage, injury or death.

Only qualified service personnel should work on this equipment.

Read all installation, operating and safety instructions before proceeding. Read and follow all warnings in this manual

The Liebert DS product is a single component in the facility heat removal system. The system includes air distribution (raised floors, duct systems), outdoor heat rejection (condensers, pumps, dry- coolers, cooling towers, piping, heat rejection fluid, ambient temperature, etc.) and indoor cooling and humidity loads (equipment load, location, outside air infiltration). Proper application and mainte- nance of the entire system is critical to the life and reliability of the Liebert DS.

• Good maintenance practices are essential to minimizing operation costs and maximizing product life.

• Read and follow monthly and semi-annual maintenance schedules included in this manual. These MINIMUM maintenance intervals may need to be more frequent based on site-specific conditions.

• See the iCom user manual, SL-18835, for instructions on how to utilize the unit controller to pre- dict some service maintenance intervals.

• Emerson recommends the use of trained and authorized service personnel, extended service con- tracts and factory-specified replacement parts. Contact your local Emerson representative.

12.1 Filters

! CAUTION

Risk of improper filter installation and filter collapse. Can cause equipment damage.

Pleat direction is non-standard. Use only short-pleat filters (see Figure 82). Long-pleat filters are subject to collapse at high airflows.

To maximize the performance and reliability of Liebert DS equipment, use only Liebert filters. Con- tact your local Emerson representative to order replacement filters.

Table 53 Filter quantities, downflow units

			Filter Quantities
	Filter Size
		4" Filter Option	2" Primary / 2" Pre-Filter Option
Unit Size	Width x Length	Merv 8 or Merv 11	Merv 11 Primary Filter / Merv 7 Pre-Filter
DS 028, 035, 042		5	5/5
	16 x 25
DS 053, 070, 077		7	7/7
DS 105		9	9/9

Table 54 Filter quantities, upflow units

		Filter Quantities
	Filter Size
			2" Primary/2" Pre-Filter Option
Upflow Models	Width x Length	4" Filter Option Merv 8 or Merv 11	Merv 11 Primary/Merv 7 Pre-Filter
VS025, 035, 042		4	4/4
	25 x 20"
VS053, 070, 077		6	6/6
VS105		8	8/8

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