Blast Hose Selection; Blasting On Higher Surfaces; Pinch Hose Inspection - Graco EcoQuip 2 EQm Instruction Manual

Blast Hose Selection

Make sure to use the correct type of blast control. An
electric or pneumatic blast control switch can be used
with hose lengths less than 150 ft (45 m). Blasting with
150 ft (45 m) or more of blast hose requires the use of
an electric blast control switch.

Blasting on Higher Surfaces

When blasting on a surface higher than the
equipment, make sure that there is a length of blast
hose on the ground equal to 10-20% of the height.
The hose on the ground prevents unspent abrasive in
the hose from backing up into the internal plumbing of
the panel, which can cause damage to the main air
regulator when the blast switch is disengaged.
For example: When blasting 50 feet (15 m) straight up,
use at least 10 feet (3 m) of blast hose on the ground
before the blast hose goes up to the blasting height.
3A3489T
NOTICE

Pinch Hose Inspection

Inspect the pinch hose at the start of each job, or
monthly, looking for "bubbles" in the outer casing. If
bubbles in the casing are found, replace the pinch hose
(see Replace the Pinch Hose, page 35). Keep a spare
pinch hose on the job site in case of failure. See Vapor
Abrasive Blast Systems and Accessories, page 47.
NOTE: There are three main factors that can affect
(diminish) the life of the pinch hose: abrasive media
used (course/sharp), blast control switch trigger rate
(high), and the air inlet pressure to the system (high). If
your setup reflects one or more of these factors, inspect
the pinch hose at the start of each job, and weekly
thereafter for signs of failure (bubbling).
Installation
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