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Replacing Control Components
Replacing Control Components
Hose Power Controller / Circuit
Breaker / Relays
Hose Heat Power Controller and Hose Transformer Sec-
ondary Circuit Breaker are DIN rail-mounted in the lower
cabinet. Unsnap them from the DIN replace them. See
Electrical Control Panel, page 28.
Hose Heat Power Controller
Place flat blade screwdriver under controller and pry
spring-loaded release tab above fan and against back
wall. Pivot bottom of unit towards front.
Circuit Breakers and Power Contactor
Relays
Pry tab on bottom down. Pivot bottom relays towards
front.
Digital Temperature Controller
1. Carefully pry tabs away on back sides of case and
pull black connector off of controller.
2. Squeeze in side tabs on black retainer clip.
3. Pull clip off of controller.
4. Push controller out towards front.
Rotating Panel Switches
1. Push down thumb tab on back of switch assembly.
2. Pull contact block assembly straight back.
3. Use a small blade to unclip contact blocks and light
blocks.
4. Unscrew round nut on back of knobs to remove.
Counter
1. Pry tabs of retaining clip away from top and bottom
of counter body.
2. Push counter out from back towards front.
Red Stop Switch
1. Remove yellow locking tab on back of switch.
22
2. Rotate metal tab counterclockwise.
3. Pull contact block straight back and off.
4. Unscrew round nut on back of knob to remove.
Checking Heated Hose Power Controller
The controller, next to the hose transformer in the lower
compartment, requires four conditions to be met for
proper function:
•
210 - 240 Vac to power the controller
•
4.5 - 5.5 Vdc to operate the control circuit
•
a complete electrical circuit through the hose heat-
ers, transformer secondary, and secondary circuit
breaker.
•
transformer secondary current sensor connected
with hose cable running through sensor doughnut.
If these four conditions are met, one green and one
orange status lights are illuminated. This only happens if
the hose temperature controller output light is on. If the
temperature controller light is flickering on less than
50%, the orange light may not be illuminated. No more
than 210 ft of hose on the machine.
1
4.5-5.5 VDC
Control
7+
8-
Signal
15
Current
16
Sensor
Connection
2
3
Green
Signal
Light
Orange
Current
Limit
Light
6
5
4
311512A
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