Parker Airtek MSC4000, User Manual

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7
MSC4000 - MSC15000 USER MANUAL
3. Start Up Procedure
Preliminary Checks
Before starting the dryer, verify that the compressed air valves are closed so there is no airflow through the
dryer, the dryer supply voltage is correct, and there is sufficient water supply to the unit (water cooled). Also
ensure unit is level at this time.
Start-Up Procedure
There should be NO air flow through the dryer before or during start-up. It is recommended that the dryer
be installed with bypass piping to better service the unit. Inlet & outlet valves to the dryer should be closed
with the by-pass valve open.
1.
Units are shipped with the refrigeration service valve tagged with a “VALVE CLOSED” label.
These tagged service valves must not be opened until the dryer is ready to be started and the
main power is permanently applied. Only tagged service valves must be opened.
2. Locate tagged service valves and remove end cap from valve stem.
3. Using a refrigeration service or small crescent wrench, turn the valve stem counterclockwise
until it stops. The valve will now be fully opened.
4. Before replacing the caps tighten the packing on all service valves (turn clockwise) if a leak is noticed.
Replace cap.
5. After electrical connection (Refer to Section 2.2), apply power.
6. After power has been applied the control panel should say “OFF” and the crankcase heater will now
start heating. THE CRANKCASE HEATER MUST BE SWITCHED ON 12 HOURS BEFORE STARTING
THE DRYER. Failure to comply with this may cause serious damage to the compressor.
7. Open the condenser water supply and return valves on water-cooled units.
8. If necessary, bleed the air from the condenser water shell.
START THE DRYER BEFORE SUPPLYING AIR!!!
CAUTION
1. Press the “RUN” button to start the dryer. (See description of “Oil Management Mode” in Section 7.1,
if the system goes into oil management mode upon start up)
2. Verify correct rotation of fans on air-cooled units. There is no rotation that needs to be checked on
water-cooled units.
3. Wait until the dryer reaches cycling temperatures and pressures.
4. Do not pass air through the dryer until it stabilizes and cycles off (cycles 2-3 times).
• Verify the liquid level in the surge tank sight glass for proper oil return! Adjustment is usually not required, and
the refrigerant level must be verified after 24 to 48 hours of operation. Adjust as necessary, using the Level
Master Control Valve (TXV). Counterclockwise raises the level & clockwise lowers the level. The oil level in the
refrigeration compressor should be between ¼ and ¾ in the compressor sight glass when the compressor
is loaded. Contact Customer Service if there are ANY questions. The refrigerant level will rise and fall during
normal operation.
CAUTION:
If liquid level is not operating within this site glass, there will be insufficient oil return and will
cause refrigerant compressor damage or failure. If there is excessive liquid (overfill) in the surge tank,
there could be liquid flood-back which could also cause refrigerant compressor damage or failure.
5. Once the dryer cycles off, you can now introduce compressed air to the dryer.
6. SLOWLY pressurize the dryer. Once completed slowly open the outlet valve, then close the bypass valve.
The dryer is now on line.
• Note
: Fast opening of air valves could damage the heat exchangers. At this time, complete the following
start up form.
7. Clean the condensate drain Y-Strainer after the first 8 hours of operation.
(See section 5.0 Routine Maintenance)
(continued on page 8)