A" Tank Change-Over; B" Tank Change-Over - DuPont FROTH-PAK Manual

9.1 "A" Tank Change-over

1 . Position the new "A" tank next to the empty "A" tank .
2 . Verify that the nitrogen intake and chemical valves of the
new "A" tank are closed . The handles should be perpen-
dicular to the valves .
3 . Remove the yellow-coded cap on the nitrogen intake
valve of the new "A" tank .
4 . Close the valve on the nitrogen cylinder . Relieve the
nitrogen pressure by loosening and removing the yellow/
red coded nitrogen regulator line from the nitrogen intake
valve of the empty "A" tank using an adjustable wrench .
5 . Reconnect the "A" yellow/red coded nitrogen line to the
nitrogen intake valve of the new "A" tank . Tighten the
connection with an adjustable wrench .
6 . Remove the chemical valve plug of the new "A" tank
and place the plug on top of the new "A" tank .
7 . Carefully remove the vaseline in the "A" chemical
tank valve .
8 . Remove the fluid filter from the canvas bag on top of the
new "A" tank . Verify that the filter and the cartridge are
free by shaking the filter until you hear a "clicking sound" .
NOTE: Air blown into end in the direction of arrow will pass freely through
the filter .
9 . Connect the filter to the new "A" tank chemical valve with
the filter arrow pointing away from the tank . The arrow
represents the chemical flow . Tighten the filter with an
adjustable wrench . The filter prevents chemical from
flowing back into the tank .
CAUTION: When disconnecting chemical lines, always
cover the connections with a rag to minimize chemical
spray or spillage .
10 . Disconnect the "A" on-off valve from the filter of the
empty "A" tank, covering the connection with a rag .
11 . Reconnect the "A" on-off valve to the filter of the new
"A" tank . Tighten with an adjustable wrench .
12 . Remove the filter from the empty "A" tank and dispose
accordingly .
13 . Reconnect the plug on the empty "A" tank to the
valve . Tighten with an adjustable wrench .
14 . Depressurize the empty "A" tank by slowly opening the
nitrogen intake valve .
15 . When the tank has been depressurized, close the nitrogen
intake valve of the empty "A" tank and reconnect the yellow-
coded cap . Tighten with an adjustable wrench .
16 . Remove the empty "A" tank and position the new "A" tank
in its place .
17 . Write "EMPTY" on the empty "A" tank

9.2 "B" Tank Change-over

1 . Position the new "B" tank next to the empty "B" tank .
2 . Verify that the nitrogen intake and chemical valves of
the new "B" tank are closed . The handles should be
perpendicular to the valves .
3 . Remove the yellow-coded cap on the nitrogen intake
valve of the new "B" tank .
4 . Close the nitrogen valve . Relieve the nitrogen pressure
by loosening and removing the yellow/blue coded
nitrogen regulator line from the nitrogen intake valve of
the empty "B" tank using an adjustable wrench .
5 . Reconnect the "B" yellow/blue coded nitrogen line to
the nitrogen intake valve of the new "B" tank . Tighten the
connection with an adjustable wrench .
6 . Remove the chemical valve plug of the new "B" tank and
place the plug on top of the new "B" tank .
7 . Remove the fluid filter from the canvas bag on top of the
new "B" tank . Verify that the filter and the cartridge are
free by shaking the filter until you hear a "clicking sound ."
NOTE: Air blown into this end will pass freely through the filter .
8 . Connect the filter to the new "B" tank chemical valve
with the filter arrow pointing away from the tank . The
arrow represents the chemical flow . Tighten the filter
with an adjustable wrench . The filter prevents chemical
from flowing back into the tank .
CAUTION: When disconnecting chemical lines, always
cover the connections with a rag to minimize chemical
spray or spillage .
9 . Disconnect the "B" on-off valve from the filter of the
empty "B" tank, covering the connection with a rag .
10 . Reconnect the "B" on-off valve to the filter of the new
"B" tank . Tighten with an adjustable wrench .
11 . Remove the filter from the empty "B" tank and dispose
appropriately .
12 . Reconnect the plug on the empty "B" tank to the chemical
chemical
valve . Tighten with an adjustable wrench .
13 . Depressurize the empty "B" tank by slowly opening the
nitrogen intake valve .
14 . When the tank has been depressurized, close the nitrogen
intake valve of the empty "B" tank and reconnect the yellow-
coded cap . Tighten with an adjustable wrench .
17