Nordson Compact Manual Iso-Flo Voltage-Block, Manual

Page: 26 / 76

Description
2-4
E 1996 Nordson Corporation
All rights reserved
108 390B
Issued 7/96
Manual 10-10
Table 2-1 Iso-Flo System Components And Their Functions
Component Function
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
1. Air regulator and gauge
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Regulates and indicates pilot air pressure to the fluid pressure regulator. The
pressure setting determines the fluid pressure to the spray device.
2. Flow sensor Supplies and senses the flow of atomizing air to the spray device. Provides a
pilot air signal to operate the shuttle.
NOTE: The extra port in the housing for the air signal to close the pressure
switch is optional. The customer-supplied pressure switch is wired to actuate
the electrostatic power supply.
3. Drain cock Simulates atomizing air flow for testing the spray device nozzle flow rate, when
opened.
4. One-way check valve Prevents two-way air from flowing through the line.
5. Lubricator and sight glass Mixes lubricant with working air to the pump. Lubricant prevents the pump
seals from wearing prematurely and keeps the pump working smoothly.
6. Iso-Flo pump Supplies coating material to the spray device. Single-stage, air-operated, 1:1
fluid-to-air ratio.
7. Fluid outlet Connects the fluid hose to the spray device using a
3
/
8
-in. NPSM male
connector.
8. Air-piloted fluid pressure
regulator
Regulates the fluid pressure to the spray device. Controlled by an air
regulator.
9. Shuttle assembly Makes or breaks the fluid connection to the spray device in response to a
signal from the flow sensor. The shuttle’s pneumatic cylinder moves the
female coupling and block up and down.
10. Filter bowl Removes lubricant from the pump exhaust air.
11. Quick exhaust valve Routes the working air from the lubricator into the pump on an air signal from
the shuttle valve. Routes exhaust air from the pump into the filter.
12. Toggle valve Puts high air pressure on the pump air motor.
13. Female coupling Connects to the male coupling when the shuttle is closed to transfer coating
material to pump.
14. Male coupling Connects to the female coupling when the shuttle is closed to transfer coating
material to the pump.
15. Door interlock valve Prevents electrical shock. When the door is opened, this valve exhausts pilot
air to the pilot valve, which closes the shuttle and grounds the fluid path.
16. Shuttle valve Connects the pilot valve to two separate and distinct operating signals.
17. Fluid inlet Connects to the coating material supply using a
3
/
8
-in. NPT (F) connector.
18. Pilot valve Controls the air flow to the shuttle in response to a signal from the flow sensor
or door interlock valve.
19. Air inlet Supplies compressed air using
1
/
4
-in. NPT (F) connector.
20. Ground strap (not illustrated)
and clamp
Connects air inlet to ground. Clamp must be secured to a true earth ground.
Components
(contd.)