Storage; Piping - Data Aire gForce Ultra User Manual

WARNING:
ductwork or guard over the fan opening(s) on the top surface of the
cabinet. Ductwork must be connected to the fan(s), or a plenum must be
installed on the top of the cabinet for protection from rotating blower
wheel(s) on upflow units. Risk of high-speed moving parts can cause injury
or death. Disconnect all local and remote electric power supplies before
working in the unit.
Note:
air leakage. Failure to do so could reduce the unit's cooling performance.

Storage

2.6
Your Data Aire equipment comes ready for immediate installation. In some instances it
may be necessary to store the equipment for a period of time. If you must store the
equipment it should be done in a dry area, out of the weather, protected from damage
by other equipment in storage or transportation equipment, never stacked, and avoid
frequent relocation.
If equipment is stored for longer than 30 days special precautions must be taken to
avoid coil damage. All coils should be charged and sealed with a low pressure (i.e., 1 to
3 PSIG, (7 to 21 kPa)) inert gas, such as nitrogen. This prevents contaminates from
entering the coils: then when the seal is broken at installation, the rush of escaping
gas verifies the coil is leak free. If coils are not charged and sealed condensation mixes
with air pollutants forming a weak acid and over time can cause pin hole leaks to
develop in the coil tubes.
When equipment is installed after storage, caution should be taken to inspect and
replace, if required, rubber components. All moving parts, such as fans and motors,
should be hand tested to ensure that they are free and clear prior to start-up. Finally,
verify that all lubrication fresh and full.

Piping

2.7
Proper piping practices should be employed to ensure adequate oil return, even under
minimum load conditions with special consideration given to the size and proper slope
of the tubing coming from the evaporator. Tubing returns from the evaporator should
14 ● gForce Ultra User Manual
Do not operate upflow units without installing a plenum,
Seal openings around piping and electrical connection to prevent
10-2014