Before Initial Start-Up; Job Data Required; Equipment Required; Remove Shipping Packaging - Carrier AquaEdge 19XR Start-Up, Operation And Maintenance Instructions Manual

BEFORE INITIAL START-UP

Job Data Required

• list of applicable design temperatures and pressures (prod-
uct data submittal)
• chiller certified prints
• starting equipment details and wiring diagrams
• diagrams and instructions for special controls or options
• 19XR Installation Instructions

Equipment Required

• mechanic's tools (refrigeration)
• digital volt-ohmmeter (DVM)
• true RMS (root mean square) digital multimeter with
clamp-on current probe or true RMS digital clamp-on am-
meter for at least 480 vac
• electronic leak detector
• absolute pressure manometer or wet-bulb vacuum indica-
tor (see Fig. 10)
• insulation tester for compressor motor rated at motor de-
sign voltage
Fig. 10 — Electronic Micron Gage

Remove Shipping Packaging

Remove any packaging material from the unit and starter.

Open Oil Circuit Valves

Check to ensure the oil filter isolation valves are open by re-
moving the valve cap and checking the valve stem.

Tighten All Gasketed Joints

Gaskets normally relax by the time the chiller arrives at the
jobsite. Tighten all gasketed joints to ensure a leak-tight chiller
(does not apply to refrigerant joints covered by factory insula-
tion). Gasketed joints (excluding O-rings) may include joints at
some or all of the following:
• waterbox covers
• compressor suction elbow flanges (at compressor and at
the cooler)
• compressor discharge flange
• compressor discharge line spacer (both sides) if no isola-
tion valve
• cooler inlet line spacer (both sides) if no isolation valve
• hot gas bypass valve (both sides of valve)
• hot gas bypass flange at compressor
See Tables 3 and 4 for bolt torque requirements.

Check Chiller Tightness

Figure 11 outlines the proper sequence and procedures for leak
testing.
The 19XR chillers are shipped with the refrigerant contained in
the condenser shell and the oil charge in the compressor. The
cooler is shipped with a 15 psig (103 kPa) refrigerant charge.
Units may be ordered with the refrigerant shipped separately,
along with a 15 psig (103 kPa) nitrogen-holding charge in each
vessel.
To determine if there are any leaks, the chiller should be
charged with refrigerant. Use an electronic leak detector to
check all flanges and solder joints after the chiller is pressur-
ized. If any leaks are detected, follow the leak test procedure
(page 16).
If the chiller is spring isolated, keep all springs blocked in both
directions to prevent possible piping stress and damage during
the transfer of refrigerant from vessel to vessel during the leak
test process, or any time refrigerant is being transferred. Adjust
the springs when the refrigerant is in operating condition and
the water circuits are full.
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