Water Ingress Protection; Figure 3-1. Conduit Plug (M25 Shown) & Warning Label - Woodward 3171A Product Manual

EM35MR1/3171A Gas Valve

Water Ingress Protection

The following are considerations for protecting the EM35MR actuator from water
damage:
1. Turbine Water Wash Process—Some customers perform a water wash of
the turbine compressor section which can result in incidental water spray
directed onto the actuator. The EM35MR1/3171A valve assembly should be
properly protected from this water spray.
2. Conduit Fittings—Woodward recommends that rigid or flexible conduit be
used to route the actuator wiring. Woodward also recommends that water-
tight conduit fittings be used when installing the wiring to the actuator.
3. Conduit Plug—If one of the actuator conduit ports remains unused, the
supplied steel plug should be securely installed with a non-hardening pipe
thread sealant. Do not over-tighten.
4. Power Wash—The valve and actuator assembly should NOT be pressure /
power washed. If there is other equipment in the vicinity that is being
pressure washed, the EM35MR1/3171A assembly should be adequately
protected from incidental water spray.
Figure 3-1. Conduit Plug (M25 Shown) & Warning Label
14
The EM35MR1/3171A valve assembly does not carry an Ingress
Protection rating and can be damaged by water exposure. Follow the
water protection considerations to prevent motor damage.
Manual 26731
Woodward