8. Remove four nuts (21) and
Make certain all
screws (22) which secure the
markings on the front panel are
terminal board TB2 (20) to the
legible. Repaint if necessary.
valve mounting bracket (15) and
(h) Apply 115 volts A.C. to the solenoid
remove the terminal board.
valves L1 and L4.
(y) Front panel and related parts.
should close when current is
lockwashers (62), and screws
(i) Apply 115 volts A.C. to the solenoid
(51) which secure the bracket
valves L2 and L3.
(30) to the chassis base (31).
should open when current is
Remove the front panel with its
attaching parts from the chassis
(j) Check the pressure gage setting.
The gage pointer should be on zero
of the graduated scale.
lockwashers (50), and screws
necessary, adjust in accordance
(53) from each panel guide
bracket (23) and remove both
(k) Check the length of the test valve
the panel guide brackets and
It should measure three
the brackets (30) from the front
(3) Assembly and installation.
3. Remove the screws (26) and
(a) Front panel and related parts.
lockwashers (25) from each
1. Install two panel handles (19,
panel handle (19) and remove
the two handles from the front
3) and secure each handle in
place with two lockwashers (25,
(2) Cleaning and inspection.
(a) Clean all parts with dry-cleaning
2. Position a bracket (30) and a
solvent and wipe dry with a clean,
panel guide bracket (23) on
each side of the front panel and
(b) Check all wires for broken or
secure each set of brackets in
If wire is
place with two screws (53),
damaged or there is doubt as to its
condition, replace the wire.
3. Position the front panel with its
(c) Inspect all copper tubes for dents
related parts on the chassis
and cracks. If tubes are damaged in
base (31) and secure each
any way, replace the tubes.
bracket (30) to the chassis base
(d) Inspect the rubber tubes, washers,
and grommets for breaks and
is any evidence of damage.
1. Position the terminal b ard TB2
(e) Inspect the terminals of the switches
and terminal boards for good
mounting bracket (15) and
secure it in place with four
screws (22) and nuts (21).
components for burrs or other
2. Screw the filter mounting flange
damage. If threads are damaged on
(5) with the filter FL1 (6), the
nuts, screws, or pipe fittings, replace
filter holder (7), and the adapter
the damaged item. If threads are
(11) into the solenoid valve L2
damaged on such components as
(g) Check the front panel, the chassis
base, and the brackets for burrs,
Before installing the flange or any
bends, and distortion.
other threaded pipe connection,
them if their condition cannot be