TM5-3820-256-10
3-10.
Water and Foam Injection System. Troubleshooting procedures for the water and foam injection system
are listed in table 3-6.
a. The table lists the common malfunctions that you may find during the operation or maintenance of the
water/foam injection system. You should perform the tests/inspections and corrective actions in the order listed.
b. This manual cannot list all malfunctions that may occur, nor all tests/inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective action, notify your supervisor.
Table 3-6. Troubleshooting the Water and Foam Injection System
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
WATER INJECTION
Step 1. Check to see if
Move water injection control
PUMP DOES NOT
water injection control is
to ON position.
DELIVER WATER.
on.
Step 2. Check water level
Add water as necessary.
in water tank.
Step 3. Check to see if
Open the valve.
water and foam injection
isolation valve is open.
Step 4. Check to see if
Report malfunction for correc-
water injection pump drive
tion by organizational mainte-
belt is slipping or broken.
nance.
2.
FOAM PULSE PUMP
Step 1. Check to see if
Open the valve.
DOES NOT DELIVER
foam shutoff valve is open.
FOAM.
Step 2. Check to see if
Insert end of tubing through
intake end of foam pulse
hole in lid of foam chemical
pump suction tubing is
container.
inserted into foam chemi-
cal container.
Step 3. Check to see if
Install a full container.
container is empty.
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