Excluding a Cluster for use access

I have 4 Domino Servers in Clusters, due to some minor maintenance I don’t want only users to access this server for load balancing and fail-over. However the remaining Servers can connect to this server for cluster replication.

Is there any way to exclude only one server from user access, for fail-over or load balancing?

Subject: Cluster server restricted

At the server console type:

SET CONFIG SERVER_RESTRICTED=n

where n means:

0 - The server is unrestricted

1 - The server is RESTRICTED for the current session only. Restarting the server clears the setting.

2 - The server is RESTRICTED persistently, even after the server restarts

Subject: Cluster server restricted

Thank you!