Problem Solutions
Applicator and supply hose fail to
heat
1. Main Breaker: Turn the system power switch to the
On position. If switch light fails to illuminate, the
switch may need replacement. System power switch
and supply hose power switch must both be in the
On position for hoses and heads to heat.
2. Power Cord: Inspect the power-in connections for
proper fit and check for faulty wires. Also, inspect
the connection of the power wires at the main power
supply source. Inspect the 9-pin hose electrical
connector for proper fit.
3. Incoming Voltage: Determine exact voltage of the
melt unit. Insufficient voltage can be the cause of
these problems. Voltage drops are common. Use a
voltmeter to determine whether sufficient voltage is
supplied to the melt unit. Also, the voltage of each
melt unit component must be compatible to the melt
unit or serious damage to the system will occur.
(Refer to section 4.4, Electrical Circuits & Wiring).
4. Adjust the supply hose temperature controller
according to section 5.3 in this manual. Inadequate
supply hose heat can affect the performance of your
hot melt system. If problem persists, see Hose
Controller Replacement, section 8.2, and section 9
for Hose temperature controller kits
5. Check the incoming hose power connector (9-pin,
underneath the melt unit) to see if it is properly
installed. Connector wire pins may be misaligned or
loose. If the melt unit has a supply hose power
switch, make sure it is the On position.
6. If problem remains, disconnect incoming hose
power connector and check hose heater resistance
with an ohmmeter. If the hose heater has failed, it is
necessary to replace the hose. (Refer to the
appropriate supply hose service manual and
section 8.1 Supply Hose Replacement).
7. Determine if applicator is heating by using a surface
temperature probe or a temperature-sensing device.
Do not touch applicator by hand to determine
temperature. Refer to the appropriate applicator
service manual.
© Copyright Astro Packaging 2009 KB30, KB50 and KB100 Series Hot Melt Units 19600-159 Rev. A 04/09/09 31
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