Pmp Electronics Enclosure Temperature Control With Coolant - Honeywell Precision Platform 4022 Series System Manual

Site Preparation
Controller Setting
2.12.2.
p/n 6510020208
5
6
7
8
9
10
See also Section 4.5 for adjustment.
PMP electronics enclosure temperature
control with coolant
The 4604-02 PMP (MSS) electronics enclosure has an optional Heat
Exchanger. If the ambient environmental temperature at the location of
the PMP enclosure exceeds 35° C (95° F), a Honeywell-designed heat
exchanger and insulation kit is required.
The PMP (MSS) electronics enclosure uses forced air circulation through a
coolant-to-air heat exchanger to control the temperature of the air. The
coolant flows from the intake manifold into the back of the PMP
electronics enclosure. The circulation fans run continuously and the
coolant flow is on-off controlled by a thermostat using a normally open
solenoid. The temperature is thermostatically controlled to 38°C (100°F)
and cannot be adjusted
The PMP electronics enclosure heat exchanger has a drain tube that will
drain any condensate that might form on the heat exchanger coils. This
would only happen when the door is left open for an extended period of
time in a very humid environment.
There is a drain port on the heat exchanger to let any condensate drain
out. The ¼ in NPT screen plug can be removed and a fitting and hose
inserted to direct the fluid to a drain.
Temperature (°F)
141°F
155°F
169°F
183°F
197°F
212°F
10/4/07
Providing external cooling fluid
Temperature (°C)
61°C
68°C
76°C
84°C
92°C
100°C
2-19