ClimaCool UCW_H 30, 50, 70, 85 - Manual (Page 45)

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When the differential set point is reached both the audible
and visual alarms will be triggered and will remain engaged
until both the alarm condition is corrected and the
alarm-reset button is pressed (if the alarm-reset button is
pressed but the differential pressure is beyond the set point,
the alarms will re-engage immediately) . After the strainer
is cleaned and put back in service, the differential pressure
should return to 1 psi .
Auxiliary Contacts
The PDA option is equipped with a remote alarm feature .
The remote alarm contacts are located at the two black and
red banana clip posts (See Figure 21) . The alarm can be set
up in one of two ways:
1. A remote alarm signal of 12 VDC can be sent to a central
monitoring station or
2. A set of auxiliary contacts will indicate a “closed”
condition when the alarm activates . (Locate the
Auxiliary Contact Schematic inside the PDA box by
removing the four screws on the cover plate) .
Water Resistance
The Pressure Differential Alarm Controller is water-resistant,
but not water proof . Do not install below ground level
where the box can be submerged in water . Do not remove
the cover plate from the PDA controller . Keep the cover
tightly sealed on the module during normal operation .
Problem
• Seals damaged or worn out • Install repair kit
• Valve is not stopping at proper closed position • Adjust limit switches
Valve stem leaks • Worn stem seals •
On metal valves: tighten stem packing nut 1/2 turn.
CAUTION! Over tightening stem nut could cause drag on
motor and trip internal circuit breaker. May require repair kit
or new valve.
• Loose body bolts or excessive operation pressure • Check bolts and observe recommended pressure ratings
• Defective seals • Install repair kits or new valve
• Swollen seals or product buildup in valve chamber • Check valve for compatibility with product, may require valve
cleaning or new valve
• Valve bolts too tight • Loosen bolts slightly
• Stem nut too tight • Loosen stem nut slightly
Troubleshooting for ATF Package
Solution
Valve is leaking past ball
Valve hard to turn
Valve body leaks
Table 3