CT SERIES CAP 410
PAGE 3
START-UP PROCEDURES
OIL RECOMMENDATION
Use Genuine CURTISLUBEPLUS Lubricants. Specially
formulated for Curtis Reciprocating Air Compressors. Non-
Detergent type with anti-foam, anti-rust and oxidation
inhibitors.
Recommended ISO68 RC-1000 Premium Reciprocating
Compressor Lubricant, Part no. VO411-3, 12-quart case or
VO411-2, 4 gallon case.
Recommended ISO100 RC-1000A Premium Reciprocating
Compressor Lubricant Part no. VO421-3, 12-quart case or
VO421-2, 4 gallon case.
CURTISLUBEPLUS Lubricants are available through
your authorized Curtis distributor.
If the compressor is equipped with an automatic start-stop
control (with pressure switch unloading), it is automatically
unloaded upon starting, and will automatically load after
attaining running speed. Close the disconnect switch and
start the compressor. Observe the direction of rotation,
which should be counterclockwise when viewed from the
flywheel side of the compressor on all models. For single-
phase units, the direction of rotation is determined by the
motor nameplate instructions, and is adjusted at the factory.
For three-phase units, if the rotation is incorrect, stop the unit
and interchange any two of the three wires to the motor at
the disconnect switch. This will reverse the direction of
rotation of the motor and compressor.
PREVENTIVE MAINTENANCE TURN OFF POWER BEFORE
SERVICING!!!
A good maintenance program will add years of service to
your air compressor. The following is recommended as a
minimum maintenance program.
(DO NOT OPERATE WITHOUT BELT GUARD)
LUBRICATION
1. For proper lubrication the compressor shall not be
operated below the minimum or above the maximum R. P.M.
recommended for the various models.
2. Maintain oil level mid-way between the upper and lower lines
of the crankcase sight gage. NOTE ILLUSTRATION:
3. Stop compressor to add and gauge oil.
4. Do not fill above the upper line and do not operate compressor
with oil level below the lower line.
DO NOT OVER FILL
5. Change oil at the first 100 hours of operation and 1000 hours
thereafter, or as required. It may be necessary to change oil
more frequent due to abnormal humid and contaminated
conditions.
DAILY MAINTENANCE SCHEDULE
1. Check and maintain oil level at centerline of sight glass and
add oil as necessary.
2. Drain condensate from receiver unless it is equipped with an
automatic tank drain, in which case the drain should be
checked weekly to see that it is operating. See automatic tank
drain instructions.
3. Check for unusual noise or vibration (See "Trouble Shooting".)
WEEKLY
1. Clean the air filters. A clogged air filter can seriously affect the
efficiency of the compressor and cause overheating and oil
usage.
2. Clean all external parts of the compressor and driver. Be sure
to clean the intercooler-finned surface on two-stage
compressors. A dirty compressor will cause abnormally high
discharge temperature and resulting oil carbonization on
internal valve components
3. Check the safety valve manually (by pulling ring or lever) to
see that it is not stuck.
INITIAL – 100 HOURS OR 30 DAYS
1. Change oil.
2. Check drive belt tension and tighten if needed.
MONTHLY
1. Inspect the entire air system for leaks.
2. Inspect condition of oil and change if necessary.
3. Check drive belt tension and tighten if needed.
EVERY 3 MONTHS OR 1,000 HOURS OF OPERATION.
1. Change oil.
2. lnspect valves. Clean the carbon from valves and head if
necessary.
3. Check and tighten if necessary all bolts, nuts, etc.
4. Check unloader operation.
*CHECKING BELT TENSION
The v-belt(s) should be adjusted so that a declination of about 3/8
– 1/2 inch will be obtained when it is pushed by a finger at the
middle point as shown in Figure 1.
CAUTION: Over tightening the v-belt(s) will result in
overloading of the motor and belt failure, while a loose
belt will be slipping and resulting in an unstable speed,
overheating the belt and high amp draw.
WARNING: Read and understand supplement LV-474 before installing and operating the compressor.
