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APPENDIX A
TM 07661B-14/1
WARNING
Pressure in tank must be vented off through handline before fill cap is removed.
(3)
SLOWLY remove filler cap on dry chemical tank, after ensuring tank is depressurized.
(4)
Measure depth of dry chemical remaining in dry chemical tank with dipstick provided with the
extinguisher (figure 3-1). The number of inches from the top of the fill collar to the remaining chemical is used to
determine the pounds of dry chemical required to recharge the tank. See Table 3-5.
(5)
Use funnel (figure 3-1) provided with the extinguisher to fill tank to proper level with dry chemical
powder (nominally 450 pounds). Install cap and tighten hand tight.
NOTE
The same funnel can be used for servicing both dry chemical and AFFF concentrate. Always
service dry chemical first, to ensure the funnel is dry. Any liquid in dry chemical tank can cause
dry chemical to cake and not to discharge.
PKP LEVEL
TO REFILL TANK, ADD:
FROM TOP OF FILL
COLLAR TO SURFACE
OF PKP.
INCHES
Fresh Fill To Settled Condition
4-1/2" - 8-1/2"
-FULL-
8-1/2" - 11-1/2"
50 LBS. PKP
11-1/2" - 14"
100
14-1/2" - 17"
150
18" - 20"
200
21-1/2" - 23"
250
24-1/2" - 25-1/2
300
28" - 28-1/2"
350
31" - 31-1/2"
400
36
450
NOTE
MEASUREMENTS SHOULD ONLY BE TAKEN AFTER PKP IS COMPLETELY SETTLED.
A 3-12
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