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COOK EPD Series Handbuch für Installation, Betrieb und Wartung
In severe applications, high temperatures or excessive
contaminates, it is advisable to have the maintenance de-
partment disassemble and lubricate the bearings after 3
years of operation to prevent interruption of service.
For motors with provisions for relubrication, follow inter-
vals of the table below.

Relubrication Intervals

Up to and
Including 184T
Service
1800
Conditions
Over
RPM
1800
and
RPM
Less
Standard
3 yrs. 6 months 2 yrs. 6 months
Severe
1 yr.
3 months
Motors are provided with a polyurea mineral oil NGLI #2
grease. All additions to the motor bearings are to be with
a compatible grease such as Exxon Mobil Polyrex EM and
Chevron SRI.
The above intervals should be reduced to half for vertical
shaft installations.

Fan Bearings

The fan bearings are provided prelubricated. Any spe-
cialized lubrication instructions on fan labels supersedes
information provided herein. Bearing grease is a petro-
leum lubricant in a lithium base conforming to an NLGI #2
consistency. If user desires to utilize another type of lu-
bricant, they take responsibility for flushing bearings and
lines, and maintaining a lubricant that is compatible with
the installation.
An NLGI #2 grease is a light viscosity, low-torque, rust-
inhibiting lubricant that is water resistant. Its temperature
range is from -30°F to 200°F and capable of intermittent
highs of 250°F.
Bearings should be relubricated in accordance with the
condition chart below.
For best results, lubricate the bearing while the fan is in
operation. Pump grease in slowly until a slight bead forms
around the bearing seals. Excessive grease can damage
seal and reduce life through excess contamination and/or
loss of lubricant.
In the event that the bearing cannot be seen, use no
more than three injections with a hand operated grease
gun.
Conditions Chart
RPM
Temp °F
-30 to 120
Up to 1000
120 to 200
-30 to 120
1000 to 3000
120 to 200
-30 to 120
Over 3000
120 to 200
Any Speed
< -30
Any Speed
> 200
For moist or otherwise contaminated installations; divide the in-
terval by a factor of three. For vertical shaft installations divide the
interval by a factor of two.
Motor Services
Should the motor prove defective within a one-year pe-
riod, contact your local Loren Cook representative or your
nearest authorized electric motor service representative.
PROPELLER WALL IO&M
Nema Frame Size
213T-365T
404T and Larger
1800
Over
RPM
1800 RPM
1800
and
and Less
RPM
Less
1 yr.
3 months
1 yr.
3 months
6 months
1 month
Greasing Interval
6 months
2 months
3 months
1 month
1 month
2 weeks
Consult Factory
1 week
Changing Shaft Speed
All belt driven Propeller Wall fans with motors up to and
including 5HP are equipped with variable pitch pulleys. To
change the fan speed, perform the following:
1. Loosen setscrew on driver (motor) pulley and remove
key, if equipped.
2. Turn the pulley rim to open or close the groove facing.
If the pulley has multiple grooves, all must be adjusted
to the same width.
3. After adjustment, inspect for proper belt tension.
Over
Speed Reduction
1800
RPM
Open the pulley in order that the belt rides deeper in the
groove (smaller pitch diameter).
Speed Increase
Close the pulley in order that the belt rides higher in the
groove (larger pitch diameter). Ensure that the RPM lim-
its of the fan and the horsepower limits of the motor are
maintained.

Maximum RPM

EWB
Maximum
Size
24
30
36
42
48
54
60
72
XLP/XLPS
Size
20
24
30
36
42
48
54
60
XMP/XMPS
Size
20
24
30
36
42
48
54
60
XLW/XLWS
Size
20
24
30
36
42
48
54
60
XMW/XMWHS
Size
20
24
30
36
42
48
54
60
5
AWB
Maximum
RPM
Size
RPM
1675
24
1510
1370
30
1145
1310
36
990
1175
42
905
1215
48
900
960
-
-
890
-
-
700
-
-
XLPH/XLPHS
Maximum RPM
Size
1280
-
1012
24
666
30
566
36
424
42
356
48
316
54
260
60
XMPH/XMPHS
Maximum RPM
Size
1280
-
1276
24
830
30
680
36
498
42
414
48
346
54
318
60
XLWH/XLWHS
Maximum RPM
Size
1276
-
1018
24
674
30
570
36
422
42
356
48
320
54
256
60
XMWH/XMWHS
Maximum RPM
Size
1462
-
1272
24
860
30
672
36
498
42
416
48
350
54
320
60
APB
Maximum
Size
RPM
24
1005
30
800
36
645
42
660
48
605
-
-
-
-
-
-
Maximum RPM
-
1100
1074
895
870
761
472
446
Maximum RPM
-
1385
1175
948
829
726
522
530
Maximum RPM
-
1126
1074
895
870
761
478
438
Maximum RPM
-
1385
1175
948
829
726
522
530
B51091-003