Troubleshooting
6-11
Part 237478_03
E 2012 Nordson Corporation
Thermostat Check
Follow this procedure to check a thermostat.
WARNING: Risk of burns. Relieve pressure. Airtrapped in the hose or gun
can spit out molten adhesive that can cause severe burns. Failure to relieve
hydraulic pressure can result in serious burns. Failure to relieve hydraulic
pressure can result in serious burns.
1. Relieve hydraulic pressure. Refer to the Relieving Hydraulic Pressure
procedure in Section 3, Installation.
WARNING! Risk of shock. Even when switched off. Nordson applicators,
hoses, and guns contain electrical potentials that can cause death.
Disconnect and lock out line voltage to the applicator.
2. Move the applicator circuit breaker to the OFF position; then disconnect
and lock out input electrical power to the applicator.
3. Remove the six manifold body cover screws, then remove the cover.
4. Disconnect the thermostat wires.
5. Connect an ohmmeter (set on the lowest resistance scale) across the
thermostat.
S Continuity exists: normal indication. Return to the Troubleshooting
Guide.
S No continuity: failed thermostat. Replace thermostat (refer to
Section 7, Repair).
Figure 6‐6 Manifold Body Cover
Screws
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