User's Manual

6 307707
Installation
Models 238983, 238984, 238985, 238986, 238987, 238988, 218509, and 220157
NOTE: Refer to page 8 to install Model 233736.
Installing the Tank
Use Stand Kit 218742 to mount the tank to the floor.
See the Stand Mounting Hole Layout on page 22.
Secure the stand (B) to the floor with M19 (5/8 in.)
bolts that engage at least 152 mm (6 in.) into the
concrete floor to prevent the tank from tipping.
Horizontal / Vertical Mounting
All surge tanks can by mounted horizontally or
vertically.
NOTE: Model 220157 can be mounted vertically with
the fluid direction flowing upward (with the fluid inlet at
the bottom).
Stand Kit
(See Fig. 2.)
Items J, K, and L (mentioned in the text below) are
supplied with Stand Kit 218742.
Secure the bracket (J) to the leg of the stand (B) with a
screw (K). Notice the different bracket positions for the
three tank sizes.
Turn the bracket (J) with a wrench to align it with the
bosses on the surge tank. Then secure the bracket to
the tank with the screws (L).
Fluid Inlet / Outlet Ports
On high-volume models (218509, 238983, 238984,
238985, 238986, 238987, and 238988), either port
may be used as the fluid inlet. The direction of fluid
flow through these models does not affect the
performance. See the Dimensional Drawings on
page 21.
CAUTION
The inlet and outlet adapter fittings on Models
238983, 238984, and 238985 (Ref. No. 3 on page
20) use a non-standard thread to fit into the fluid
cover (Ref. No. 1 on page 20). You must use Graco-
approved fittings to prevent thread damage. Contact
your Graco distributor for optional fittings.
Fluid Lines and Accessories
(See Fig. 3.)
Install a fluid drain valve (H) near the surge tank outlet.
WARNING
A fluid drain valve (H) is required in your system to
help reduce the risk of serious injury, including
splashing fluid in the eyes or on the skin and injury
from moving parts.
Opening the fluid drain valve helps relieve pressure
in the surge tank, pumps, hose and gun after
shutting off the system. Triggering the gun to
relieve pressure may not be sufficient.
Install a fluid shutoff valve (C) before and after the
surge tank to isolate it when servicing the tank. See
Fig. 3.
Proper line sizing is an important part of the system.
Contact your Graco distributor if you need assistance.
To obtain proper flow through the system, use the
proper size plumbing from the following list:
 Models 238983, 238984, 238985, 238986, 238987,
238988: Use a minimum 51 mm (2 in.) diameter
pipe and plumbing.
 Model 218509: Use a minimum 51 mm (2 in.)
diameter pipe and plumbing.
 Model 220157: Use a minimum 25 mm (1 in.)
diameter flexible hose between the pump and tank
and a hard or flexible pipe after the tank.