IMT CAS40PL Operation Manual And Parts List Download

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SECTION 4:

OPERATION

99906549 rev 00 (JANUARY-2020)

4 - 1

SECTION 4: OPERATION

IOWA MOLD TOOLING CO., INC.
(641) 923-3711

CAS40PL, CAS40PL-CW, CAS40PLE, CAS40PLE-CW

4.1 GENERAL

INFORMATION

The IMT CAS40PL compressor has a compre-
hensive array of controls and indicators. Under-
standing the correct operation of the system will
help you to understand and recognize when it is
operating optimally. The information in the Oper-
ation Section will help the operator to recognize
and interpret the readings, which will call for ser-
vice or indicate the beginning of a malfunction.

4.2 OPERATING

CONDITIONS

1. Operate only in well-ventilated areas.
2. Ensure there are no obstructions of cooling

air intakes and outlets around the machine.

IMPORTANT

Be sure to leave su

ﬃ

cient room around the

machine for cooling air circulation during

operation. There must be a minimum of ten (10)

inches for the cooler intake, and ten (10) inches

for the sides and rear. Heated air must be able

to vent away from the intake.

3. Do not leave anything resting on top of the

machine. Hot cooling air will generate high
heat and must not be restricted.

4. Operate machine with the top cover closed.
5. Refer to speci

cations for operating param-

eters.

6. Recommended:

DO NOT

exceed maximum

operating angle of 15°.

4.3 INITIAL

(FIRST-TIME)

START-UP

IMPORTANT

If start-up and shut-down procedures are not

followed, damage to the system and its compo-

nents may occur.

NOTE

Flow control needs to be set by the installer for

closed center units.

The compressor has been factory-tested and its
air and hydraulic valves have been adjusted to
their speci

ed operating settings. The crankcase

has been factory-

lled, but the oil needs to be

checked in order to ensure propper level before
initial start-up. Note also that vehilce needs to be
parked on level surface before checking the oil
level. Refer to

Section 5.4.3 Compressor Sys-

tem Lubrication

, for the correct lubricant type,

and sight glass and oil

ll locations.

The following steps apply to the

rst time start-up

after the machine installation. Check the oil, as
per the previous paragraph. Add oil if necessary.
Refer to

Figure 5-2

Section 5.4.3.1

for unit

check locations, and

Figure 4-1

for instrumenta-

tion type, and

Figure 4-2

for Controller Screen

information (if applicable).

1. Ensure all service outlets are closed.
2. Ensure that the PTO ON/OFF switch is in the

ON position (fully engaged).

3. Apply hydraulic power.
4. Check for hydraulic supply or return leaks

and correct if required.

5. Allow air pressure to build up in the receiver

tank.

The compressor is now operating automatically.
It will continue to pump until the pressure reach-
es the factory set-point (100-175 psig). At this
point the compressor unit will switch o

ﬀ

and the

hydraulic

ow will be redirected back to the sup-

ply tank; any air in the compressor will be vented
to the atmosphere. The accumulated pressure
in the receiver tank is maintained by the check
valve

tted to the compressor outlet connection.

For a closed center system, the solenoid valve
will be turned to the OFF position, causing the
load sense line to adjust the piston pump to pro-
vide less or no

ow to prevent "Dead Heading"

Hydraulic Pressure.
When a demand is applied to the unit the receiver
tank pressure drops until it reaches the low pres-
sure set-point. The compressor then automatical-
ly restarts and repeats this cycle in response to