13
OPERATIONS Pumping System w/ Spray Wand
An optional pump may be installed to pump material through a spray wand. The pump may
be driven by a gas or diesel engine or by an electrical or hydraulic system. The plumbing
must be purged of material when finished to prevent plumbing freeze-up. This is done by re-
versing the pump to suck the material out of the wand. An optional flush tank may also be in-
stalled to further flush the system of any remaining material. NOTE: All valves should be OFF
unless directed to be open.
1. Circulate. In this operation, the contents of the tank are pumped through the recirculation
system and directed back to the tank to aid heating and mixing.
a. Set Recirculate/Spray valve (2) to "Recirculate" position.
b. Open tank valve (1).
c. Engage pump in “Forward” direction.
2. Spray. In this operation, the contents of the tank are pumped to the wand for application
to the road surface.
a. Set Recirculate/Spray valve (2) to "Spray" position.
b. Open tank valve (1).
b. Engage pump in “Forward” direction.
c. Open valve on spray wand.
3. System Purge. (suck back) In this operation, the pump is “Reversed” to purge the product
from the system.
a. Disengage pump.
b. Set Recirculate/Spray valve (2) to "Spray" position.
c. Open tank valve (1).
d. Open valve on wand, then engage pump in “Reverse” for two minutes.
e. Close tank valve (1) and disengage pump.
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