Design and Installation
06-236115-001 4-35 October 2014
4-3.18 Installation of Pressure Trip, P/N 81-874290-000
Install the pressure trip on the discharge manifold or piping in the horizontal position as shown
on the system drawings. Connect the trip to the piping with 1/2-inch Schedule 40 pipe. The
minimum operating pressure required is 75 PSIG (5 bar gauge). The maximum allowable load
to be attached to the retaining ring is 100 lb (45 kg).
4-3.19 Installation of Manual Pull Station, P/N 81-871403-000
1. Locate the remote pull boxes as shown on the system installation drawings.
2. Connect the pull boxes to the control heads using 3/8-inch, Schedule 40 pipe. Do not run
more than one cable in each pipe run.
3. Install a corner pulley at each change in pipe direction. Do not bend the pipe. A dual-pull
equalizer (P/N 81-840051-000) should be installed where one pull box operates two con-
trols. A dual pull mechanism (P/N 81-840058-000) should be installed where two pull boxes
operate one control.
4. Beginning at the pull boxes, remove the covers of the first corner pulley. Feed the cable
through the pulley into the 3/8-inch pipe. Connect one end of the cable to the cable fastener
in the pull box, allowing the short end to project at least 1/2-inch. Seat the cable in the
groove by pulling on the long end. Screw the fastener and cable into the handle. Route the
other end to the control heads, taking up as much slack as possible. Attach the end of the
cable to the fastener in the control head.
5. Reattach the corner pulley covers.
6. Check that control head is in SET position. Install the control head to the HFC-227ea cylin-
der valve.
4-3.20 Installation of Discharge Indicator (P/N 81-875553-000)
The discharge indicator must be installed on the discharge manifold, either in a vertical or
horizontal position. The indicator has a 3/4-inch NPT male connection. Make certain the
indicator stem is in the normal position.
To Next Page
Loading...
Need help?
General
