Jordan Valve Mark 87 User Manual

I & M Mark 87 Series
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
info@richardsind.com • www.jordanvalve.com
Warning: Jordan Valve temperature regulators must only be used, installed and repaired in accordance with these Installation & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event of leakage or other malfunction, call a qualied service person; continued operation may cause system failure or a general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized uid. Before disas­sembling a valve, be sure to release all spring tension.
Please read these instructions carefully!
Your Jordan Valve product will provide you with long, trouble-free service if it is correctly installed and main­tained. Spending a few minutes now reading these in­structions can save hours of trouble and downtime later. When making repairs, use only genuine Jordan Valve parts, available for immediate shipment from the factory.
Ideal Installation
Main Steam Line
3
To protect the regulator from grit, scale, thread chips, 1. and other foreign matter, all pipe lines and piping components should be blown out and thoroughly cleaned before the valve is installed. Shutoff valves, pressure gauges, and bypass piping 2. should be installed as indicated in the diagram to provide easier adjustment, operation, and testing. In preparing threaded pipe connections, care 3. should be taken to prevent pipe sealing compound from getting into the pipe lines. Pipe sealing com­pound should be used sparingly, leaving the two lead threads clean. Jordan uses, and recommends, Seyco #2415 thread sealer Teon ribbon.
A line strainer should be installed on the inlet side of 4.
4
1
1
2
1
Steam
1
Trap
Condensate Return Line
4
1
5
2
By-Pass Line
1. Shutoff Valve
2. Pipe Union
3. Strainer & Drain Valve
4. Pressure Gauge
5. Jordan Regulator
6. Relief Valve
7. Thermal Bulb
7
6
R
Installation & Maintenance Instructions for
Mark 87 Temperature Regulators (1/2” – 6”)
the regulator to protect it from grit, scale and other foreign matter. A 0.033 perforated screen is usually suitable. Line strainers are available from Jordan Valve. Install the regulator in the highest horizontal line of 5. piping to provide drainage for inlet and outlet pip­ing, to prevent water hammer, and to obtain faster regulation. The ow arrow on the regulator body must be 6. pointed in the direction of ow. The valve may be installed vertically or horizontally without affecting its operation. For best control, 3’0” straight sections of pipe should 7. be installed on either side of the valve. To minimize condensation in hot vapor lines, up-8. stream and downstream piping near the regulator should be insulated. For injection heating applications, the regulator 9. should be installed above the maximum water level in the tank, or a check valve should be installed to prevent water from backing up into the regulator. For best regulation, the temperature regulator 10. should be installed as closely as possible to the unit in which the temperature is being controlled. On steam control applications, install a steam trap 11. of sufcient capacity to drain the coil or condenser. Be sure to have a good fall to the trap, and no back pressure. Best control is obtained when the coil or condenser is kept dry. Where surges are severed, a piping accumulator is 12. recommended.
Operation
The direct acting pilot valve is normally open, allowing the upstream pressure to force the main diaphragm down to open the main valve seats. As the process temperature approaches the desired setting, the uid in the bulb vaporizes, creating the necessary pressure on the pilot diaphragm to throttle the pilot valve toward the closed position. This starves the pressure supply to the main diaphragm and the lower spring beings to close the main valve. The reverse acting pilot is normally closed, and opens on an increase in temperature.
Start-Up Procedure
With the inlet, outlet and by-pass shut-off valves closed:
port. Follow instructions in section “To Remove Main Diaphragm”. Thermal System Failure. See Series 80 I & M Sheet.
Fully open the outlet shut-off valve1. Slowly open the inlet valve just enough to start ow 2. through the regulator. Observe the downstream pressure gauge. Increase the downstream pressure slowly by gradually opening the inlet valve. Do not fully open the inlet valve until you are sure 3. that the regulator has control of the system. Usu­ally, the handwheel on the inlet valve will turn freely when this point is reached. To change the controlled temperature, rotate the 4. adjusting wheel on the pilot valve upward to in­crease the temperature, and downward to crease the temperature.
Troubleshooting
Insufcient Heating (or Cooling)1.
A valve undersized for the application. Check capac-• ity required and valve capacity. Line strainer or pilot strainer screen could be • clogged. Blow down strainers or visually check that they are clear. Incorrect setting on range spring. Vary the setting • and check response. Main valve diaphragm may be ruptured. See section • on main valve maintenance. Malfunction of other piping components. Check for • leaking traps and safety valves, inadvertently opened or closed valves.
Controlled Temperature Fluctuates
Valve oversized. Check capacity required and valve • capacity.
Maintenance
WARNING: Be sure that there is no pressure in the valve before loosening any ttings or joints. The fol­lowing steps are recommended.
Close inlet shut-off valve.1. Allow pressure to bleed off through downstream 2. piping. Do not cause a reverse ow through valve by bleeding pressure from upstream side of valve. When downstream pressure gauge indicates no 3. pressure in the line, close the outlet shut-off valve. Close the control line shut-off valve.4.
Bulb Installation
The Thermal System is a hermetically sealed unit consist­ing of a sensing bulb, capillary tubing, protective armor, and actuator assembly. This unit contains the thermo­static charge that operates the temperature regulator. Please do not tamper with it. In case the charge is lost, the thermal system must be replaced as a complete unit. It is not repairable in the eld and must be returned to the factory for repairs.
Overheating (or Cooling)2.
Incorrect setting on range spring. Vary the setting • and check response. Pilot valve or main valve seats leaking. Close inlet • shut-off valve, allow downstream pressure to bleed off, close outlet valve and remove loading pres­sure tubing. FOR HEATING APPLICATION: Heat the sensing bulb to approximately 20° - 30°F above the control point and/or reduce the compression of the adjusting spring to guarantee that the pilot valve is stroked closed. FOR COOLING APPLICATION: Cool the sensing bulb to approximately 20° - 30°F below the control point and /or increase the compression of the adjusting spring to guarantee that the pilot valve is stroked closed. Crack open inlet shut-off valve - if uid issues from pilot valve point, the pilot seats are leaking. If the uid issues from the main valve port, the main valve seats are leaking. By-pass shut-off valve leaking. During period of leak-• age, close outlet shut-off valve, observe thermometer. Bleed port in main valve clogged. Remove Upper • Bonnet to gain access to bleed port and clean bleed
Correct Installation1. - For effective temperature control installation of the sensing bulb is essential. For best results, the bulb should be installed at a point of true representative temperature and where there is good circulation. A thermometer or other temperature sensing device (if used) should be placed as close as possible to the sensing bulb of the regulator.
Handle the capillary and armor carefully so they are 2. not crushed, kinked or twisted. A bend of 4-1/2” radius or larger is recommended.
Horizontal Mounting3. - When the bulb is to be mounted horizontally, it must be turned so that the word TOP and center punch mark (stamped on the adapter) faces upward.
Vertical Mounting 4. - No special precaution is required when the bulb is mounted vertically pointing down.
Inverted Mounting5. - A special capillary is required if the tip of the bulb will be higher than the capil­lary end. The temperature regulator equipped with
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