12
45-610 Displacer Type Liquid Level Switches and Proof-er
®
Switches
If the Proof-er is not functioning properly, listed below are
potential problems and corrective action.
1. Proof-er does not return to the down position after it is
activated.
CAUSE REMEDY
Defective return spring. Replace Spring.
Buildup between the shaft Clean Proof-er to
and housing restricting remove buildup.
movement.
Handle stops are not adjusted Adjust handle stop
properly. screws in or out to allow
the handle to move to
the proper position.
2. Switch will not trip when Proof-er is activated.
CAUSE REMEDY
The switch mechanism is Check switch
defective and not the Proof-er. mechanism.
Handle stops are not adjusted Adjust handle stop
properly. screws in or out to allow
the handle to move to
the proper position.
4.2 Agency Approvals
All with an electric switch mechanism and a housing Class I, Div 1, Groups C & D
listed as Type 4X/7/9 Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing Class I, Div 1, Groups B, C & D
listed as Type 4X/7/9 Class I, Div 1, Group B Class II, Div 1, Groups E, F & G
All with a Series HS, F, 8 or 9 electric switch mechanism Class I, Div 2, Groups A, B, C & D
and a housing listed as CSA Type 4X
All with an electric switch mechanism and a housing Class I, Div 1, Groups C & D
listed as Type 4X/7/9 ➀ Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing Class I, Div 1, Groups B, C & D
listed as Type 4X/7/9 Class I, Div 1, Group B Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and an ATEX II 2 G EEx d IIC T6
➂ ATEX housing ➁ 94/9/EC
IEC Ex Ex d IIC T6
IP66
Low Voltage Directives 2006/95/EC Installation Category II
Per Harmonized Standard: Pollution Degree 2
EN 61010-1/1993 & Amendment No. 1
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