Replacing Pressure Adjuster - Graco THERM-O-FLOW T7 Series Instructions Manual

Replacing pressure adjuster

For replacement parts, see Parts, page 42.
WARNING
To avoid accidental system pressurization or
electrical shock, disconnect power cord and turn
the on/off switch to OFF. Read Warnings, page
3.
WARNING
Wait until equipment/fluid has cooled completely.
Read Warnings, page 3.
Disassembly
Refer to F . 8 for the following instructions.
IG
84
86
88
85
87
F . 8: Pressure adjuster assembly
IG
1.
Turn on/off switch OFF. Unplug tank unit.
2.
Using a 1 in. wrench, remove pressure adjuster
body (86).
309832D
78
80
83
79
81
82
3.
Using a 3/32 in. hex wrench, loosen set screw (87).
Loosen and remove knob (88).
4.
From the body (86), remove shaft (82), u-cup (84),
and o-ring (85). Inspect for damage and replace.
5.
From shaft (82), remove o-ring (83). Inspect for
damage and replace.
6.
From pressure adjuster insert, use an o-ring pick to
remove spring (81) and poppet (80). Inspect for
damage and replace.
7.
Using a 3/16 hex wrench, remove seat (79) and
o-ring (78). Inspect for damage and replace.
Repair
31