DEKKER Vacuum Technologies, Inc. – HullVac / September 2016
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OPTIONAL ACCESSORIES
The following accessories are available for
HullVac
rotary piston vacuum pump systems.
Automatic Inlet Vent Valve:
Includes a normally open solenoid valve and filter assembly mounted
to the pump inlet port. When power is shut off, the pump inlet and manifold will be vented to
atmosphere. This will prevent accidental oil suckback into the manifold and process chamber and will
also vent the chamber up to atmosphere.
Automatic Inlet Isolation Valve:
Consists of a pneumatically actuated ball valve mounted on the
pump inlet that automatically closes whenever power is shut off.
Note: This includes the
automatic inlet vent valve.
Temperature Control Valve:
Reduces cooling water flow by up to 90% while it controls pump
operating temperature within the optimal range of 140-165°F. This temperature optimizes water and
solvent evaporation from the oil supply while preventing damage due to excessive heating.
Inlet Filter:
Traps particulate larger than the internal clearances of the pump (5 micron). Must be
installed horizontally.
Oil Mist Eliminators:
Strips atomized oil droplets from the exhaust stream, reducing the
appearance of smoke. Assembly comes complete with a ball valve on the canister drain and a 0 to 15
psig gauge to monitor filter element condition.
TROUBLESHOOTING
The following is a basic troubleshooting guide. Please consult the factory for advanced troubleshooting.
Each
HullVac
system is tested and checked at the factory. Always indicate system model and serial number
when calling.
WARNING: Before attempting any repairs, disconnect all power from the system by
switching off the main breaker or disconnect switch. All electrical work should be done by a
qualified electrician in compliance with OSHA, National Electric Code and any other
applicable local electrical code.
Start-Stop Problems
System will not start in HAND or AUTO position:
1.
No main AC power. Confirm that the main AC power disconnect is ON and supplying power to the control
panel. This can be measured with an AC voltmeter at the power supply terminals in the control panel. Refer to
the electrical control panel diagram supplied with the system. If main AC power is not present at the power
supply, verify incoming AC voltage on the motor contactor.
2.
Check if the disconnects or circuit breaker is switched on.
3.
Check the overload setting on the starter.
4.
Check all fuses.
5.
Ensure that the proper voltage is supplied and that the wire size is correct.
6.
Check electrical control panel (if installed) and make sure that all of the wires are tight. Wires may vibrate
loose during shipment or operation.
7.
Check oil level. Add oil to reservoir if needed.
8.
Check if the pump has seized by removing the belt guard and rotating the belts by hand (
disconnect
power first
). If a rubbing noise or binding is observed, contact the factory.
System shuts down while running:
1.
Check oil temperature. Normal system operating temperature is between 140-160°F as measured on the oil
solenoid valve body located below the exhaust port.
2.
Ensure that the proper voltage is supplied and that the wire size is correct.
3.
Check for loose electrical connections.
4.
Check if the pump has seized by removing the belt guard and rotating the belts by hand (
disconnect
power first
). If a rubbing noise or binding is observed, contact the factory.
