Watts AERCO Benchmark OMM-0136 - Air Flow Fault Tests - Blower Proof & Blocked Inlet Switches; Blower Proof Switch Test

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING
OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 72 of 153
5.8 AIR FLOW FAULT TESTS - BLOWER PROOF & BLOCKED
INLET SWITCHES
These tests check the operation of the Blower Proof switch and Blocked Inlet switch shown in
Figure 5-6a, 5-6b and 5-6c.
5.8.1 Blower Proof Switch Test
Figure 5-6a: Blower Proof & Blocked Inlet Switch Locations – BMK1500 – 4000
Figure 5-6b: Blower Proof & Blocked Inlet Switch Locations – BMK750 &1000
BLOWER
PROOF
SWITCH
BLOCKED
INLET
SWITCH
SSOV
MANUAL
SHUT-OFF
VALVE
BLOWER PROOF
SWITCH
BLOCKED
INLET SWITCH
MANUAL
SHUT-OFF
VALVE