Chapter 10 - Maintenance
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MNL000538
Revision 1
03/26/2018
BSGS eV / BULKGUARD eV
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
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4.0 Electrical Component Life Expectancy
This section provides the expected life of several system components. The listed expected life is the
length of time during which the component, with proper care and handling as outlined in the
Preventive Maintenance section, is expected to function properly. At the end of the expected life, the
component should be replaced to ensure the safe and proper functioning of the system. The life of the
system as a whole is considered to be 10 years.
Electrical Components
Component
Expected Life / Changeout Frequency
24 Volt Power Supply
AP11 Controller
10 yrs
High-High Temperature Switch
TSH-5
5 yrs
Power Solid-State Relays
SSR-203, SSR-207, SSR-211, and
SSR-215
5 yrs (typical)
Life expectancy varies depending on the duty cycle of the heater
and the ambient temperature.
Power Contactor
CR-202
5 yrs (typical)
Life expectancy varies depending on the frequency the device is
cycled between the on and off state and the ambient temperature.
Control Relays
ALL 24 VDC coils
10 yrs (typical)
Life expectancy varies depending on the frequency the device is
cycled between the on and off state.
E-Stop push button
PB-112
10 yrs
AP11
Programmable Micro-
controller
10 yrs
Z-Purge Pressure Switch
PAL-206
10 yrs