!
Figure 11. Model 950, Installation of Weights
11
850 and 950 Series
North America Only
3. For the Model 950 PVRVs containing hoods, the
sensor is located at a proper distance away from
the stem by using a sleeve, bracket and set screw.
The sensor is held within the sleeve using two
jam nuts. Fasten the sleeve to the hood using a
bracket. Using a set screw, mate the bracket and
sleeve to ensure that the sensor is in the proper
location and cannot be adjusted. When installing
weights, lift the hood and sensor/bracket/sleeve off
the vent rods as one. Remove the sensor/bracket/
sleeve from the hood and install the weights.
Reverse the process to reassemble the hood
and sensor.
WARNING
Maintenance
850 and 950 Series
Make sure line is free of hazardous vapors
before installing or servicing the valve.
Observe all applicable safety
requirements. Only qualied and trained
personnel shall perform maintenance
functions in hazardous locations.
Valves should be removed from the
location having a potentially explosive
atmosphere and taken to a safe location
for repair and maintenance.
For preventive maintenance of the Enardo pressure/
vacuum relief valve, refer to the following instructions.
1. Loosen the fasteners on top of the valve and
remove the lid, hood or guide.
2. Remove any valve pallets and weights from the
unit. Keep in mind that these will be reinstalled,
so keep track of the chamber from which they
were removed.
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