Class1 EZFill Foam Refill - Manual (Page 42)

Service, Maintenance & Troubleshooting ❑
39 EZFill Installer / User Guide, p/n: 029-0020-82-0
3. System attempts to
FILL and/or FLUSH
but no fluid is
pumped. KZCO 3-position elec-
tric valve not receiving
power. ● Power
Check for voltage across power leads to the valve.
● No voltage
See preceding Step 1 (on page 38) to verify main power
is provided, repair and/or replace accordingly.
● If voltage is present on valve power leads check for volt-
age on signal line to valve coming from pin 4 of smart-
switch when panel is put into FILL mode.
Note: No voltage will be present in FLUSH mode.
● If NO voltage is present when switch is in FILL mode,
replace smart switch.
KZCO 3-position elec-
tric valve is internally
defective (binding).
Valve does not shift
between FILL and
FLUSH positions. ● Binding
Foam residue, left in the valve over time, can casue
binding due to the sticky nature of the foam.
If binding is suspected, the valve must be replaced, or
dismantled and thoroughly cleaned.
Note: It is imperative to thoroughly FLUSH the system
after each use, especially when changing type of foam.
4. Electric valve fails to
operate. Valve is obstructed or
defective.
Note: Should the valve
become obstructed (unable to
turn) an internal protection cir-
cuit disables the drive motor
clutch and the valve is no
longer operable via the smart-
switch controller (SPC).
Control of the valve is restored
once power is reset - see next
column.
● See separate valve manual and check valve for any
obstruction or sluggish operation. Repair accordingly
(disassemble and clean, lubricate, etc.).
● Check that power is provided to the electric drive motor,
pins #1 and #8 from smart-switch controller. Continuity
test cable harness. Repair and/or replace accordingly.
● To reset, either reset main power provided to the EZFill
system, or temporarily disconnect the 3-position valve
connector.
● Once power is restored, check system for proper
operation.
5. Dual Tank System
Option. To control filling sepa-
rate foam tanks (A or
B), a dual tank system
adds an additional:
● Relay (Tank level
switch select)
● Electric valve
(Tank select 3-
position)
● Tank level switch
sensor
● The tank select relay receives voltage from pins #5 and
#6 at the smart-switch connector.
● The tank select KZCO valve receives power from pin
#6 at the smart-switch connector.
● The tank level select sensor also receives power from
the relay, pin #87 for Foam Tank "A" and pin # 87A for
Foam Tank "B."
Note: Troubleshooting is the same as the single tank
system, as explained on the preceding pages.
# Problem Possible Cause Remedy
Table 8-3: Troubleshooting Table