Port-A-Cool PAC2K163SHD - Manual (Page 16)

25 2007 PORT-A-COOL® Unit Electric Models 16 2007 PORT-A-COOL® Unit Electric Models
FAn MOTOR REpLACEMEnT
Belt Drive Models (PAC2K361S, PAC2K363S, PAC2K482S)
1) DISCONNECT POWER and remove the pads as shown on page 15.
2) Motor is located in center of unit. Switchbox is located in upper left.
(Figure 1) Locate motor harness wire secured to fan bracket assembly using
plastic ties. Cut and remove plastic wire ties. DO NOT CUT ELECTRICAL
HARNESS WIRES.
3.) Remove switch box cover. (Figure 2) Unplug motor wire harness con-
nector. Push rubber grommet on motor wire harness through switch box
opening and remove motor harness from switch box.
4) Loosen four (4) bolts that secure the motor mounting plate. This will
allow the motor plate to move up or down. Loosen and remove the belt
from the motor pulley. (Figure 3)
5) On front of motor mount, remove belt pulley by loosening set-
screw. Remove four (4) lock nuts securing motor to mount. Remove
motor by sliding straight back out of mounting holes.
6) Install new motor by reversing steps above. (A.) Install new motor
into motor mount and install four (4) lock nuts to secure motor to mount,
but do not tighten. (B) Install motor pulley on motor shaft and align with
fan blade hub pulley. Install fan belt on fan blade pulley by sliding motor
plate away from the fan hub. Visually align the motor pulley and fan pul-
ley by using the belt as a reference. (C) Adjust the motor pulley in or out
to align. Tighten the motor pulley setscrew. (D) Apply pressure on the
motor to further tighten the belt being careful not to over tighten. (About
15 pounds of pressure is sufficient). Complete tightening of the four (4)
motor plate bolts. (E) Thread terminal end of motor wire through switch
box opening and plug connector into switch connector. PROPERLy
RESEAT RUBBER GROMMET SEAL ON HARNESS AT OPENING IN SWITCH
BOX TO KEEP WATER OUT OF CONTROL BOX. FAILURE TO DO SO
COULD CAUSE ELECTRICAL SHOCK. (E) Replace switch box cover. (F)
Secure motor wire harness to fan bracket assembly using new wire ties.
(G) Replace pads by installing from outside in toward center replacing
center pad first.
7) Reconnect the unit power and test motor.
FAn MOTOR REpLACEMEnT
Direct Drive Models
(PAC2K36HPVS, PAC2K24HPVS, PAC2K163S, PAC2K163SHD, PAC2K163SFC,
PAC2K16HPVS, PAC2K16HPVSFC)
1) DISCONNECT POWER and remove pads as shown on page 15.
2) Motor is located in center of unit. Switch box is located in upper left. Locate motor harness wire
(Figure 1) secured to fan bracket assembly using five plastic wire ties. Cut and remove plastic wire ties.
DO NOT CUT ELECTRICAL WIRES.
3) Remove switch box cover. Unplug motor harness wire connector. Push rubber grommet on motor wire
harness through switch box opening and remove motor harness wire from switch box. Disconnect motor har-
ness at the quick release connector. (Figure 2 nExT pAGE)
4) Remove the screen from the front of the unit to access the fan side of the
unit.
5) Loosen the nut from the threaded motor shaft and take the fan blade off.
(Figure 3 nExT pAGE)
6) Locate the 8 bolts (2 on each arm) holding the motor in place.
(NOTE: the position of the motor on the mounting arms. Make sure to mount
it in the correct railings of the motor housing and at the correct distance from
front or back on all four arms to ensure stability and alignment) (Figure 4
nExT pAGE)
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Figure 2
Figure 3
Figure 1
Figure 1
Port-A-Cool® unit
TEMPERATURE OUTPUT CHARACTERISTICS
70% TO 75% RELATIVE HUMIDITY
APPENDIX A
WET BULB TEMPERATURE
DRY BULB TEMPERATURE
TEMPERATURE DIFFERENCE
TEMPERATURE DROP
OUTPUT TEMPERATURE
Wet Bulb Temperature @ Current Humidity Level
Current Ambient Air Temperature
Dry Bulb Temp Minus Wet Bulb Temp
Temperature Difference Multiplied by 72%
Dry Bulb Temperature Minus Temperature Drop
DRY BULB
Temp. °C Temp. °F
21.1 70
23.9 75
26.7 80
29.4 85
32.2 90
35.0 95
TEMP. °F
Difference Drop
10 7.2
10 7.2
11 7.9
11 7.9
12 8.6
12 8.6
OUTPUT TEMP.
°C °F
17.2 63
20.0 68
22.2 72
25.0 77
27.2 81
30.0 86
70% RH
DRY BULB
Temp. °C Temp. °F
18.3 65
21.1 70
23.9 75
26.7 80
29.4 85
32.2 90
TEMP. °F
Difference Drop
8 5.8
8 5.8
9 6.5
9 6.5
9 6.5
9 6.5
OUTPUT TEMP.
°C °F
15.0 59
17.8 64
20.6 69
23.3 74
26.1 79
28.9 84
75% RH
A-4