TM 10-4610-246-13
2.7.2 Priming Procedures. Ratio-feeder assembly is primed as follows (Figure 2-6):
a.
Loosen nut (2) and remove line (1) from antisiphon valve (3).
b.
Place line (1) into reservoir (10) and hold in place.
c.
Open outlet valve (8) to start flow through ratio-feeder (4).
NOTE
Priming procedure could take 5 minutes or more. Make sure pump cycles enough times to produce good chemical flow
each time pump cycles.
d.
As soon as liquid comes from line (1) and no air is trapped in pumphead (4) shut outlet ball valve (8).
Hand tighten connections. Overtightening could result in equipment damage.
e.
Reconnect line (1) to antisiphon valve (3).
2.7.3 Activation and Adiustment. Hypochlorination unit is activated and adjusted as follows:
a.
Open outlet ball valve (8) and allow hypochlorination unit to run for approximately 30 minutes.
NOTE
The following test is performed as outlined in paragraph 2.7.1c, with the exception of where sample is
drawn.
b.
Obtain sample downstream of hypochlorination unit and perform chlorine residual test (refer to para 2.7.1c).
NOTE
If residual reading is too high, go to step c. If residual reading is too low, go to step d.
c.
If residual reading is too high:
(1)
Set stroke adjusting knob (5) at position 3 as read on dial scale assembly (11).
(2)
Allow unit to run for another 30 minutes and then repeat residual test (refer to step b above).
(3)
If reading remains high, set stroke adjusting knob (5) at position 1 as read on dial scale assembly (11).
(4)
If reading remains high after another 30 minutes, dilute solution at a 2:1 ratio. This can be accomplished
by adding 21/2 gallons of water to both the reservoir and bucket. Start testing procedures over (refer to
step b above).
(5) After desired chlorine levels are reached, go to step e.
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