COOK CCP - Manual (Page 5)

5
Motors are provided with a polyurea mineral oil NGLI #2
grease. All additions to the motor bearings are to be with a
compatable grease such as Exxon Mobil Polyrex EM and
Chevron SRI.
The above intervals should be reduced to half for vertical
shaft installations.
Motor Services
Should the motor prove defective within a one-year
period, contact your local Loren Cook representative or
your nearest authorized electric motor service representa-
tive.
Changing Shaft Speed
All belt driven fans with motors up to and including 5 HP
(184T max.) are equipped with variable pitch pulleys. To
change the fan speed, perform the following:
a. Loosen setscrew on driver (motor) pulley and remove
key, if equipped.
b. 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.
c. After adjustment, inspect for proper belt tension.
Speed Reduction
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
limits of the fan and the horsepower limits of the motor
are maintained.
Maximum RPM
CCP-A
Size
Maximum RPM
CCP-F
Size
Maximum RPM
Class I Class II Class I Class II
120 3948 5151 120 3692 4817
135 3508 4577 135 2953 3853
150 2749 3587 150 2656 3465
165 2509 3273 165 2414 3150
180 2150 2805 180 2389 3117
195 1987 2592 195 2204 2876
210 1841 2402 210 1786 2330
225 1712 2234 225 1659 2164
245 1608 2098 245 1532 1999
270 1418 1850 270 1391 1815
300 1276 1665 300 1251 1632
330 1162 1516 330 1141 1489
365 1065 1389 365 1022 1333
402 964 1258 402 936 1221
445 873 1139 445 846 1104
Relubrication Intervals
Service
Conditions
NEMA Frame Size
Up to and
including 184T
213T-365T 404T and larger
1800 RPM
and less
Over 1800
RPM
1800 RPM
and less
Over 1800
RPM
1800 RPM
and less
Over 1800
RPM
Standard 3 yrs. 6 months 2 yrs. 6 months 1 yr. 3 months
Severe 1 yr. 3 months 1 yr. 3 months 6 months 1 months
S 1 3 th 1 3 th 6 th 1 th
Lubrication - Fan Bearings
Bearings are lubricated through a grease fitting on the
exterior of the fan housing and should be lubricated by the
schedule, Lubrication Conditions Chart.
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 burst
seals thus reducing bearing life.
Before lubricating, the grease nipple and immediate
vicinity should be thoroughly cleaned without the use of
high pressure equipment. The grease should be supplied
slowly as the bearing rotates until fresh grease slips past
the seal. Excessive pressure should be avoided to prevent
seal damage.
Use no more than three injections with a hand-operated
grease gun.
Exceptions to the greasing interval chart:
• Periodic Applications (any break of one week or
more): it is recommended that full lubrication be performed
prior to each break in operation.
• Higher Temperature: it is recommended to halve the
intervals for every 30
F increase in operating temperature
above 120
F not to exceed 230F for standard bearings;
High Temperature bearings (optional) can operate up to
400
F.
• Vertical Shaft: it is recommended that the intervals
should be halved.
Loren Cook Company uses petroleum lubricant in a lith-
ium base. Other types of grease should not be used unless
the bearings and lines have been flushed clean. If another
type of grease is used, it should be a lithium-based grease
conforming to NLGI grade 2 consistency.
A NLGI grade 2 grease is a light viscosity, low-torque,
rust-inhibiting lubricant that is water resistant. Its tempera-
ture range is from -30
F to +200F and capable of intermit-
tent highs of +250
F. For temperatures above 250F
Mobiltemp SHC 32 is recommended.
Lubrication - Motor Bearings
Motors are provided with prelubricated bearings. Any
lubrication instructions shown on the motor nameplate
supersede instructions below.
Motor bearings without provisions for relubrication will
operate up to 10 years under normal conditions with no
maintenance. In severe applications, high temperatures or
excessive contaminates, it is advisable to have the mainte-
nance department disassemble and lubricate the bearings
after 3 years of operation to prevent interruption of service.
For motors with provisions for relubrication, follow inte-
vals of the following table.
Lubrication Conditions Chart
Fan Class Fan Status Shaft Size
Maximum Interval
(operational hrs)
Centrifugal Blower
Class I
Normal Conditions
(Clean, Dry & Smooth)
> 1-1/2” 10,000
< 1-1/2” 2,000
Extreme Conditions
(Dirty/Wet/Rough)
> 1-1/2” 2,000
< 1-1/2” 400
Centrifugal Blower
Class II
Normal Conditions
(Clean, Dry & Smooth)
> 2” 7,500
< 2” 1,000
Extreme Conditions
(Dirty/Wet/Rough)
> 2” 1,500
< 2” 200