65
Fig. 35 — Frame 7 Power Module
Fig. 36 — Frame 8-15 Power Module
Servicing the Drive
Figure 37 illustrates use of a multimeter to check DC bus
terminals.
Fig. 37 — Check DC Bus Terminals
RIGGING THE ENCLOSURE
Where overhead room and/or clearance in front of the drive en-
closure is insufficient to allow the drive to be safely removed from
the enclosure, the entire enclosure may have to be removed from
the chiller.
The dimensions and weights specified must be taken into consid-
eration when removing the enclosure. For 19XRV chillers, the to-
tal weight for 19MV Frame 7, including drive weight and enclo-
sure, is 1,963 lb (890 kg). The larger drives used for 19XR are
supplied in sections and then assembled in the field. Due to the
weight of the drives, components will typically be replaced indi-
vidually rather than lifting the entire drive/drive section. All lifting
equipment and lifting components (hooks, bolts, lifts, slings,
chains, etc.) must be properly sized and rated to safely lift and hold
the weight of the drive and/or drive components while removing.
TYPICAL SERVICE PROCEDURES
Rockwell Automation Publication 750-TG100C-EN-P contains
typical component replacements. Chapter 6 covers Frame 7
LEGEND
ID Connection
1
+DC
2
–DC
3
R/L1, U/T1
4
S/L2, V/T2
5
T/L3, W/T3
LEGEND
ID Connection
1
+DC
2
–DC
3
R/L1, U/T1
4
S/L2, V/T2
5
T/L3, W/T3
WARNING
To guard against possible personal injury and/or equipment
damage:
1. Inspect all lifting hardware for proper attachment before
lifting drive.
2. Do not allow any part of the drive or lifting mechanism to
make contact with electrically charged conductors or
components.
3. Do not subject the drive to high rates of acceleration or
deceleration while transporting to the mounting location
or when lifting.
Do not allow personnel or their limbs directly underneath the
drive when it is being lifted and mounted.
WARNING
DC bus capacitors retain hazardous voltages after input power
has been disconnected. After disconnecting input power, wait
five (5) minutes for the DC bus capacitors to discharge and
then check the voltage with a voltmeter to ensure the DC bus
capacitors are discharged before touching any internal compo-
nents. Failure to observe this precaution could result in severe
bodily injury or loss of life.
1
L1 L2 L3
O
I
2
DC+ DC–
0V
0V
Lockout/Tagout
Multimeter
DC Bus Test
Terminals
Located Inside
Access Door
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