SOB Manual

MNSOB Shut Off Box Instructions (continued)
5 | P a g e 1 0 - 283- 1 R E V : P 5
Enclosure Notes:
In order to ensure water-tightness on Type 4X units and rain-tightness on the Type 3R units it is important to
install connectors or hole plugs into every opening. Silicone sealant can be used to plug all openings on Type 3R
units except for the two 1/8” drain holes on the bottom.
On Type 4X units two 1/8” drain holes can be placed at the lowest point on the enclosure. The enclosure will not
be as water-tight, but this will give any condensation that may build up a way out of the enclosure.
Tighten hole plugs firmly on 4X units with MidNite Solar tool part number 5-151-1 or similar tool.
Tighten from the inside of the Shut Off Box to avoid twisting the gasket.
On TYPE 4X units a special sealing
screw is used to ensure that the unit is
water-tight. Use of other screw types
will compromise the seal and should
not be used.
Typical Combiner/Shut Off Box 4X bottom Shown with plugs
Tighten firmly with tool available
from MidNite Solar
Hole plug parts placement on Type 4X Chassis
Tighten from the inside of the Shut Off Box