Installation
B 3-4
Part 1022914G03
E
2007 Nordson Corporation
Mounting and Connections
(contd)
Return Hose
From Spray
Guns
Connect siphon hose directly
to circulation valve kit tee
Circulation Valve Kit
Siphon Accessory Kit
Installing Optional Siphon Accessory and Circulation Valve Kits
(Circulating System)
Note:
To install the optional circulation valve kit, refer to the instructions included
with the kit.
Installation Guidelines
Figures B 3-4 and B 3-5 show typical dead-end and circulating systems.
When installing your pump, follow these guidelines:
S
Supply the pump with clean, dry air. Moisture-laden air can freeze in the
air motor, causing poor performance and stalling. Use an air dryer and
filter the air to 40 microns or better.
S
The air drop to the pump should be plumbed from the top of the plant air
line. Install a drop leg and drain valve at the bottom of the drop.
S
Install a self-relieving shutoff valve in the air supply line to the pump.
S
Always install the air filter ahead of the regulator, to prevent
contamination of the regulator.
S
The air and fluid hoses connected to the pump must be electrically
conductive. Do not use rigid plumbing, which will conduct pump
vibration to the rest of the system.
S
Make sure the siphon connections are tight and leak-free. A leak will
pull air into the pump, causing cavitation and poor performance.
S
High-pressure fluid connections must be tight and leak-free. Refer to
Section B1 Safety
for information on high pressure fluid hazards. Check
all connections for leaks before beginning production.
